Senior Manager Backend Engineering Payment Solutions jobs in Seoul – Browse 811 openings on RoboApply Jobs

Senior Manager Backend Engineering Payment Solutions jobs in Seoul

Open roles matching “Senior Manager Backend Engineering Payment Solutions” with location signals for Seoul. 811 active listings on RoboApply Jobs.

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companyCoupang logo
Full-time|On-site|Seoul, South Korea

Join Coupang as a Senior Manager in Backend Engineering!We are seeking an experienced leader to manage and enhance our payment systems. You will play a crucial role in developing and optimizing payment solutions that serve millions of customers.Key Responsibilities:Lead backend engineering teams to build robust payment infrastructures.Collaborate with cross-functional teams to streamline payment processes.Ensure high availability and scalability of payment systems.Qualifications:Proven experience in backend engineering, preferably in payment systems.Strong leadership and team management skills.Proficiency in programming languages such as Java, Python, or Node.js.Excellent problem-solving and analytical skills.How to Apply: Please complete the attached Internal Transfer Request Form and submit it using your Coupang email account.

Mar 13, 2026
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companyCoupang, Inc. logo
Full-time|On-site|Seoul, South Korea

Coupang Pay, a subsidiary of Coupang Corporation, offers a tailored electronic payment gateway service (PG) to meet the growing needs of Coupang customers. Our focus is on providing innovative payment and financial service solutions to everyone using Coupang's platforms, from customers purchasing items on coupang.com and Coupang Eats to sellers utilizing Coupang's open market and Coupang Eats merchants. With extensive experience in the fintech sector, our team is dedicated to transforming every aspect of the payment experience for our customers. Are you interested in learning more about Coupang Pay? Join us on this exciting journey!Key ResponsibilitiesCoupang Pay aims to make Coupang the most convenient online payment site. As a Development Manager in the Product Engineering team, responsible for various services offered by Coupang Pay, you will participate in developing exceptional fintech services and ensure higher quality payment services through code reviews. You will also play a crucial role in delivering and enhancing the country’s first one-touch payment system, 'Coupay.' Collaborating with the accounting, finance, and fintech development teams, you will be actively involved in developing and operating the fintech back-office to provide customers with a faster and more convenient payment experience.

Jan 7, 2026
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companyToss logo
Full-time|On-site|Seoul

About the Team You'll Join- As a Payment Software Engineer at Toss, you'll be part of the Device Team, collaborating with Device Owners, Device Software Engineers, Embedded Software Quality Engineers, and Hardware Engineers.- The Device Team is at the forefront of revolutionizing the offline payment industry, crafting innovative changes in the payment ecosystem.- You will work alongside Business Development Managers, Purchasing Managers, Android/Server Developers, and others to successfully launch top-tier payment devices.Your Responsibilities- Develop payment applications across multiple OS environments (Android, Windows, Linux, RTOS).- Specialize in card data processing tailored for VAN companies and develop communication protocols.- Conduct security certifications in compliance with credit card associations.- Develop and certify EMV, Tmoney, and Weezle applications.- Work on NFC feature development and Apple Pay integration and certification.Who We’re Looking For- We seek an individual with over 5 years of experience in payment domain development using C and C++.- Experience in developing payment module firmware or applications is a strong plus.- Familiarity with credit card security certification or EMV certification is highly desirable.- Experience in developing Vcat or DLL for POS systems would be advantageous.Your Journey with Toss- Application submission > Job interview > Cultural fit interview > Reference check > Compensation negotiation > Final acceptance and onboarding.A Note for Potential Colleagues"You can be part of realizing a dream!"- I am currently developing payment software at Toss. If you're eager to experience the thrill of developing hardware products, this is the place for you.- If you've ever seen a Toss terminal, you've witnessed the process of our dreams coming to life.- At Toss, you will focus on development amidst passionate teammates and a unique culture, allowing you to challenge new frontiers.

Mar 23, 2026
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company
Full-time|On-site|Seoul, South Korea

Who We AreJoin us in setting global standards for video understanding AI! Twelve Labs is at the forefront of developing advanced AI models tailored for video analysis, search, summarization, and insights derived from vast video datasets.Our models are utilized by the largest sports leagues to swiftly and accurately highlight key moments in extensive game footage, providing a hyper-personalized viewing experience. In South Korea, integrated control centers use our technology to efficiently navigate CCTV footage in crisis situations, while major broadcasters and studios worldwide leverage our models for content creation aimed at billions of viewers.As a Deep Tech startup with offices in San Francisco and Seoul, Twelve Labs has been recognized as one of the top 100 AI startups globally by CB Insights for four consecutive years. We have successfully raised over $111 million from prestigious venture capital firms and corporations, including NVIDIA, NEA, Index Ventures, Databricks, and Snowflake. Our unique AI model developed in Korea is exclusively available via Amazon Bedrock. We are committed to creating innovative products with outstanding colleagues and growing alongside our global clientele.Twelve Labs operates based on the following core values:A commitment to honesty and reflection about ourselves and our teamResilience and humility, embracing failure and feedbackA dedication to continuous learning and enhancing the team's capabilitiesIf you enjoy solving challenging problems and growing through the process, the opportunity is here at Twelve Labs.About the TeamThe Console team is responsible for creating a B2B SaaS platform that connects our proprietary AI models with customers. Currently, we offer our technology through API, SDK, and the web application called Playground, catering to a diverse range of clients from individual developers to large enterprises. Moving forward, we will establish a common foundation that provides a consistent data layer across all products, enabling them to operate seamlessly on our platform. Our team, based in San Francisco and Seoul, collaborates as one unit, leveraging diverse backgrounds to create remarkable products.Our team values autonomy and open-mindedness. Every member is encouraged to set and pursue their goals, fostering a culture of free discussion and suggestions for product improvement. Engineering collaborates closely with product managers from the design phase to ensure high-quality system architecture, with peer reviews enhancing the integrity of our code.About the RoleAs part of the Console team, the Staff Backend Engineer plays a crucial role in developing the backend systems that underpin our products, enabling users from individual developers to large enterprises to effectively utilize our video AI models through APIs, SDKs, and a Web Console. This position involves designing core systems for authentication, billing, organizational management, and a unified data layer that supports all products. Beyond merely implementing features, this role includes setting the technical direction for the team and spearheading solutions to complex challenges.You will work closely with product managers, frontend engineers, ML engineers, and various teams to design and implement systems that are both user-friendly and scalable.You may be a good fit if you haveOver 8 years of experience in backend engineeringExperience in a startup or fast-paced environment, with a proven ability to lead technical decisions and manage projects under uncertaintyDeep understanding of backend languages such as Go and Java/Kotlin, with experience designing and operating production-level systemsProficiency in system architecture design and scalability considerations

Mar 18, 2026
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companyCoupang, Inc. logo
Full-time|On-site|Seoul, South Korea

Overview Coupang is dedicated to astonishing our customers. We thrive when we hear feedback like, “How did we ever live without Coupang?” Our relentless pursuit of making shopping, dining, and living easier than ever is driving us to disrupt the multi-billion-dollar e-commerce industry from the ground up. As one of the fastest-growing e-commerce companies, we have established a formidable reputation as a dominant and trustworthy force in South Korean commerce. We take pride in combining the agility of a startup with the resources of a major global public company. This unique blend empowers us to maintain our rapid growth trajectory and launch innovative services swiftly. Our entrepreneurial spirit fosters an environment rich with opportunities to spearhead new initiatives and innovations. At Coupang, you will witness continuous growth—both personally and professionally—alongside your colleagues, your team, and the company. Our mission to shape the future of commerce is tangible. We challenge the limits of what is possible, tackling problems and overcoming traditional trade-offs. Join Coupang today and help us create extraordinary experiences in this ever-connected, high-tech world. Role Summary The Global Operations Technology (GOT) division is integral to ensuring Coupang can deliver products to customers within hours of placing their orders. GOT is committed to revolutionizing logistics through the development of an efficient delivery network at unprecedented scale and speed. As a Senior Staff Backend Engineer within GOT, you will harness advanced algorithms to enhance the customer experience by guaranteeing timely deliveries, even during peak shopping seasons. We seek a tech-savvy professional who can shape the technological direction across multiple teams, leveraging deep industry expertise and utilizing statistical and machine learning techniques to provide significant value to our customers. The ideal candidate will be pragmatic, resourceful, and ready to tackle challenges that may appear insurmountable, with a proven history of executing impactful projects. Key Responsibilities Lead the architectural design of Fulfillment Technologies aimed at scalability, future extensibility, and reliability. Develop and align with stakeholders on an appropriate roadmap and future technology direction for the Fulfillment Technologies team. Identify and mitigate technical challenges and organizational blockers. Break down complex problems into straightforward, actionable components.

Dec 16, 2025
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companyToss Payments logo
Full-time|On-site|Seoul

Join our innovative team at Toss Payments as a Technical Product Manager, where you will be a vital part of our product organization.Lead a team of server developers to design and enhance the foundational elements of our payment systems.Collaborate with makers (designers, frontend, and server developers) to create products tailored for payments and merchants.During the interview process, we will assess your strengths and experiences to match you with the right product or team upon successful hiring.Our goal is to create a robust and flexible system that can swiftly adapt to new requirements while enhancing the financial experience of our customers.Your ResponsibilitiesMaintain clear domain boundaries to ensure the independence of complex payment systems as they evolve.Evaluate the design and implementation of the system and suggest better alternatives if necessary.Define various technical challenges the team needs to address (development of new features, improvement of technical debt) and prioritize them based on impact.Lead technical communications among partners and stakeholders.Collaborate with makers to resolve technical issues that may arise with the products and analyze root causes.Who We’re Looking ForA candidate with proven experience in designing and implementing complex systems that are actively serviced.Experience in making gradual improvements through agile processes is a plus.Ability to succinctly organize various requirements and the current state of the team is essential.Experience leading projects with complex technical products, especially those with numerous dependencies, is desirable.Experience diagnosing and resolving chronic technical issues to enable greater product growth is a plus.Experience in leading server developers is advantageous.Resume RecommendationsIf you have experience addressing technical debt, please share the process from problem definition to strategy formulation, execution, and results.Share your experiences leading teams of multiple developers, including challenges and solutions encountered during the process.Journey to Joining TossApplication submission > Job interview > Cultural fit interview > Reference check > Compensation negotiation > Final acceptance and onboarding.You will have the opportunity to have a coffee chat with potential teammates during the process.We provide preference in hiring for individuals with disabilities and veterans in accordance with relevant laws.“You will have the opportunity to solve the most challenging technical problems alongside outstanding developers.”Toss Payments operates and improves a payment system that has been in place for over 20 years. We are transitioning away from legacy systems to a flexible system capable of rapidly resolving any issues. We seek a top-level Technical Product Manager to join us on our journey to overcome longstanding challenges in payment systems and evolve into a technology-driven global payment company. Our exceptional team of developers, who conquered significant technical debt in just six months, awaits your arrival.“This is an opportunity to grow by viewing products from a holistic perspective of technology and business.”As our service scales, the importance of developer skills increases, but many decisions must consider the business context. We need someone who can view products from an overall perspective. The TPM plays this crucial role, eliminating various blockers faced by developers and ensuring the product's direction is technically feasible while evaluating opportunity costs and reviewing technical connections internally and externally. This is a fantastic position to grow by viewing the product and organization from a comprehensive perspective that encompasses both technology and business.

Mar 9, 2026
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companyToss Payments logo
Full-time|On-site|Seoul

Welcome to Toss PaymentsToss Payments is committed to understanding the challenges and inefficiencies businesses face, aiming to provide comprehensive solutions across technology and operations. Our goal is to deliver a seamless and convenient service experience for consumers while creating an environment where merchants can focus solely on their business.We work under the principle of 'innovating the electronic payment market', fostering a culture of mutual trust and collaboration. We are looking for colleagues who are eager to help shape the future of the payment industry!About the Team You Will JoinThe Frontend Developer position at Toss Payments is part of both the product team and the frontend chapter. Within the product team, you will collaborate with Product Managers, Product Designers, Server Developers, and fellow Frontend Developers to tackle complex projects in the payment domain, creating sustainable and high-quality services over time. You will have the opportunity to refine and specify the products that leverage your strengths during the interview process.The frontend chapter operates like a cohesive team! We hold regular chapter meetings and share new technology topics or development insights during 'Lightning Talks.' Participate in mob programming, interface design reviews, and various challenges that encourage continuous growth!This year, the frontend chapter aims to scale significantly to support the smooth operation of Toss's growing business.What We Have Accomplished So FarWe developed the payment widget to enable anyone to easily create their desired payment experience after thorough consideration.We designed and applied an intuitive and scalable payment SDK architecture that meets numerous requirements.We are enhancing dashboards and admin products to effectively address the complex policies and management elements from merchant contracts to payments and settlements.Beyond product development, we take the lead in reducing various inefficiencies within the company through the establishment of testing automation platforms, design standardization, and sharing development capabilities.Future Challenges We Want to Tackle TogetherWe look forward to crafting products that flexibly accommodate complex requirements. We are already applying technical challenges to effectively manage complexity in the payment domain while maintaining scalability. However, to drive these goals forward, we need more teammates to support us.We aim to completely eliminate accumulated legacy.The long-standing electronic payment market has not been without its technical debt. We are seeking individuals who can analyze areas that are hard to control or manage, rapidly reconfigure them with new technologies, and help create an environment where the business can grow swiftly.Who We Want to Work WithIndividuals who place high value on developer experience.Those who understand and practice the importance of automated testing.Enthusiasts of new technologies and various platforms.Individuals keenly interested in programming languages.Those who find joy in simplifying complex business challenges.Experience We ValueExperience with static type analysis using TypeScript or Flow is a plus.Experience in server-side rendering (SSR) and web app development within mobile applications is a plus.Experience in UI development considering responsive design, web accessibility, and web standards is a plus.Experience in test and deployment automation is a plus.Experience in configuring the operational infrastructure of web services or creating product monitoring systems is a plus.

Mar 9, 2026
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companyDatabricks logo
Full-time|On-site|Seoul, South Korea

At Databricks, we prioritize a proactive culture and a customer-centric approach that drives our mission to provide a unified platform for data science and analytics. We empower our clients to make informed decisions that propel their businesses forward. Our intuitive platform simplifies the process of transforming insights into actionable outcomes, fostering a spirit of creativity, experimentation, and continuous improvement.As a Senior Solutions Engineer, you will play a pivotal role in this mission, leveraging your technical expertise to illustrate how our Data Intelligence Platform can address complex data challenges faced by our customers. You will be part of a collaborative, customer-focused team that values innovation and creativity, using your skills to craft tailored solutions that help clients achieve their objectives. Join us on our journey to revolutionize the way people interact with data and contribute to a better world!

Feb 6, 2026
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companyCoupang logo
Full-time|On-site|Seoul, South Korea

Coupang is revolutionizing the shopping experience, aiming to amaze each customer from the moment they launch the Coupang app until their order is delivered to their doorstep. With a robust end-to-end e-commerce and logistics network, coupled with a passionate commitment to customer-centricity, Coupang has eliminated the trade-offs between speed, selection, and price. We proudly offer incredibly fast shipping on millions of products, including fresh groceries, delivered within hours across the nation, 365 days a year. This is our promise to millions of customers in Korea, a nation that boasts one of the largest and fastest-growing e-commerce landscapes in the world. [About the Team]As a vital part of the Ecommerce Engineering team, our mission is to deliver exceptional customer experiences, achieve world-class service excellence, and drive hyper-growth in revenue. We accomplish this by developing scalable and extensible architecture to support rapid business expansion, creating high-performance and resilient backend systems to manage increasing customer demands, and implementing stable, fault-tolerant mechanisms that ensure an unmatched customer experience. Our vision is to craft disruptive products and resilient platforms for customers, leveraging world-class talent and cutting-edge technology.

Apr 10, 2026
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companyToss Payments logo
Full-time|On-site|Seoul

Join our innovative team at Toss Payments as a Data Engineer, where you'll play a crucial role in building and optimizing our data infrastructure. You will work with cutting-edge technologies, collaborating with cross-functional teams to drive data-driven insights and solutions. Your expertise will help us enhance our payment systems and improve user experiences.

Mar 9, 2026
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companyToss Payments logo
Full-time|On-site|Seoul

# Company Overview - The Toss Payments team aims to revolutionize the electronic payment market in South Korea. With the expansion of online and mobile commerce, Toss Payments seeks to provide innovative payment solutions that benefit both businesses and consumers through technological and business model advancements. # Key Responsibilities - Continuously enhance the Stability, Scalability, Availability, and Latency of our systems.- Build effective monitoring systems to proactively detect issues and respond swiftly.- Resolve incidents and design preventative solutions for future occurrences.- Establish and execute performance testing environments to support service growth.- Experiment with and evaluate the adoption of open-source products. # Qualifications - Expertise in Java-based technologies.- Solid understanding of software engineering principles.- Deep knowledge of Linux and network systems.- Comprehensive understanding of Microservices Architecture (MSA).- Enjoy working in mission-critical service environments with a strong sense of responsibility to build robust services.- Adapt quickly to new technologies and embrace change for continuous personal and professional growth. # Technologies at Toss Payments - Java Spring Framework, JPA/Hibernate, GradleJenkins, Git, Docker, Kubernetes + IstioKafka, Elastic, InfluxData, Grafana, MemcachedEJB, Pro C, AnyLink, Control M, Weblogic, Oracle # Journey to Join Toss Payments- Application Submission > Technical Interview > Cultural Fit Interview > Salary Negotiation > Final Acceptance and Onboarding # Industry Insights- The Future of the Payment Industry, Created Anew by Toss

Mar 9, 2026
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companyToss Payments logo
Full-time|On-site|Seoul

# Join Our Team- As part of the Toss Payments team, you will navigate legal risks in the payment industry, providing guidance to ensure safe and secure achievement of our team's objectives by identifying and mitigating these risks.- You will address various legal matters related to corporate restructuring and other legal issues within the company, ensuring ongoing growth by reviewing and resolving necessary legal concerns.- In the innovative journey of Toss Payments, where we venture into uncharted territories and offer unique services, you will have the opportunity to engage in forward-thinking and groundbreaking legal reviews that are not typically encountered elsewhere.- We strive for a proactive legal team that collaborates from the outset with service organizations, allowing you to experience the growth and development of the company firsthand, unlike traditional risk management roles.- Our legal team comprises members with diverse backgrounds from financial holdings, securities firms, IT companies, law firms, and government bodies, fostering synergy through varied experiences. As Toss Payments is a relatively new organization, you can contribute to building the legal team from its inception rather than merely joining an established one.

Mar 9, 2026
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companydaangn logo
Full-time|On-site|SEOUL

Welcome to the journey of joining the Daangn team!At Daangn, we strive to create an environment where individuals can grow alongside the company's development.Our recruitment team is here to assist you in making the moment of collaborating with amazing colleagues a joyful reality. Introducing the Advertising TeamThe Advertising Team is responsible for the core advertising services that drive Daangn's revenue model. We operate an advertising platform targeting Daangn's 19 million monthly active users (MAU), providing effective advertising opportunities for both small businesses and large enterprises through localized advertising solutions. Our ongoing improvements can significantly impact advertisers' performance and Daangn's revenue, as we continuously evolve our services through data-driven decision-making and constant experimentation. The Advertising Team plays a pivotal role in balancing user experience with advertising effectiveness, ensuring we deliver useful and relevant ads while preserving Daangn's core values of community communication and transaction experiences. We develop various advertising formats and targeting options, leveraging machine learning technology to optimize advertising performance. Additionally, the team participates in crucial decision-making processes from an organizational perspective. Since ads are displayed across multiple app surfaces, we must consider not only ad performance but also the overall health of the service and user satisfaction. Therefore, we adopt a comprehensive approach that considers the needs of advertisers, user experience, and our business objectives. Within the Advertising Team, you'll engage in diverse tasks such as developing new advertising products, enhancing the advertising platform, analyzing and optimizing ad performance, and managing advertiser relationships. If you want to make an impact in a rapidly evolving advertising market grounded in innovative ideas and analytical thinking, the Advertising Team is the perfect choice for you. Learn more about the Daangn Advertising Team!Your ResponsibilitiesGrow into an expert handling large-scale advertising traffic.Daangn Market is a massive platform with 19 million MAU. Operating an advertising system reliably in this large-scale environment presents both challenges and opportunities. By joining the Advertising Team, you will work with systems that handle hundreds of millions of ad requests daily. You will learn how to respond to various issues that arise, enhancing your skills in building high-availability systems and practical problem-solving. Specifically, in the Serving Team, you will work with a Real-Time Bidding (RTB) system that demands millisecond-level response times, allowing you to acquire skills in designing and implementing ultra-low latency distributed systems. In the DSP Team, you will develop performance optimization and scalable architecture for processing large volumes of advertising data.Gain experience in data-driven decision-making and optimization.As a developer in the Advertising Team, you will handle vast amounts of user and ad performance data. You will have the opportunity to build and optimize pipelines for efficiently collecting, processing, and analyzing this data, enhancing your skills in big data processing technologies, data warehousing, and real-time data streaming. Additionally, you will gain hands-on experience applying machine learning models to real advertising systems, utilizing AI/ML technologies in areas such as user targeting, ad performance prediction, and real-time bid price determination to continuously improve the advertising system.Experience solving technical challenges in a continuously growing service.Daangn is in a constant state of growth. As such, the advertising system is continually expanding, with new features being added. You will experience evolving the system to accommodate various changes such as new ad product launches, expanded targeting options, and improved ad effectiveness measurement. For example, in the DSP Team, you'll be developing logic for new ad formats, integrating new data sources, and in the Serving Team, implementing new ad display methods, tackling various challenges that arise. Through this process, you’ll be able to learn about and apply the latest technological trends, significantly enhancing your technical capabilities.Design and operate microservices architecture directly.The Advertising Team adopts a microservices architecture, allowing you to design and implement independent microservices across different domains such as DSP, DMP, and recommendation systems. This experience will enable you to apply core concepts of microservices architecture, including inter-service communication, API design, and distributed transaction handling.

Dec 18, 2025
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companydaangn logo
Full-time|On-site|SEOUL

Join daangn as a Backend Software Engineer and be part of a dynamic team dedicated to revolutionizing the commerce landscape. In this role, you will work on innovative backend systems that enhance user experience and operational efficiency.

Mar 25, 2026
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companyToss Payments logo
Full-time|On-site|Seoul

Join Toss Payments as a Marketing Manager and play a pivotal role in shaping our marketing strategies. You will collaborate with cross-functional teams to design and implement comprehensive marketing campaigns aimed at expanding our market presence. Your creativity and analytical skills will drive innovative solutions that resonate with our target audience.

Apr 9, 2026
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companyDatabricks logo
Full-time|On-site|Seoul, South Korea

Join Databricks as a Senior Solutions Architect and play a pivotal role in driving our clients' success through innovative data solutions. You will leverage your expertise in cloud technologies and data engineering to design robust architectures that empower organizations to harness the full potential of their data. Collaborate with cross-functional teams to deliver high-impact solutions that enhance business outcomes.

Mar 31, 2026
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companyToss Payments logo
Full-time|On-site|Seoul

# Introducing Toss Payments Toss Payments is dedicated to innovating the electronic payment market, providing merchants with comprehensive solutions from technology to operations, while offering consumers a seamless and user-friendly payment experience. Visit our introduction page: https://introducetosspayments.oopy.io/ # About the Team You'll Join The Account Manager role is part of the Key Account Growth Team within the Toss Payments Sales Tribe. This team is responsible for sales and partnerships related to Toss Payments' electronic payment services, focusing on existing clients, partners, and international payment companies. We aim to grow Toss Payments' business by introducing core payment products, discovering and expanding partnership channels, and enhancing integration of international payment products. # Your Role and Responsibilities Lead, manage, and take responsibility for the entire sales process, including introduction, negotiation, and onboarding of core payment products for existing clients. Engage directly with key decision-makers, from operational staff to executives, during the sales process, driving proposals and decision-making for payment product integration. # Who We Want to Join Us 5+ years of experience in cross-selling and upselling to large and small clients, preferably in a payment gateway (PG) company. Strong problem-definition skills to address various challenges that arise during the client sales process, coupled with flexible thinking to find solutions. Ability to comprehend and clearly explain complex products, policies, and processes. Proven persuasive communication skills, with a history of successful negotiations with clients and internal stakeholders. Experience in technology-based B2B sales is a plus, but not mandatory. # Application Tips Detail your experiences leading client sales and the quantifiable results achieved during that process. If you have experience creating proposals and negotiating with clients, please elaborate on those experiences. # Journey to Join Toss Payments Application submission > Job interview > Cultural fit interview > Reference check > Offer negotiation > Final acceptance and onboarding. A Message for Future Colleagues “Finding growth opportunities through sales and achieving significant success through negotiation and problem-solving is incredibly rewarding.” Having transitioned from a global company to Toss Payments, I now have the autonomy to define my sales deals and tackle challenges without waiting for approvals. If you're looking to find growth opportunities through sales and create significant successes through negotiation and problem-solving, apply for the Account Manager position now!

Mar 17, 2026
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companyToss logo
Full-time|On-site|Seoul

Join Our Team!The Machine Learning Backend Engineer will be part of the ML Service Team, developing backend servers and common service platforms for various AI products within Toss Bank.The ML Service Team consists of Data Scientists, responsible for model development and application, and ML Engineers, who focus on server development, collaboratively creating innovative AI solutions.We work closely with product organizations responsible for banking services, leveraging AI technology to develop products. Collaboration with POs, designers, and developers ensures we manage the complete development cycle of AI products.Your Responsibilities:Design and develop robust server architecture to ensure a stable delivery of diverse AI products handled by the ML Service Team.Create individual services capable of handling large-scale traffic based on a solid server architecture.Develop servers that can efficiently serve heavy computational AI models with reliable response times and throughput.Operate services that allow distributed tracing in a microservices architecture while minimizing disruptions.We Are Looking For:Experience in server development and operation using one or more programming languages such as Python, Kotlin, or Go.Ability to design resilient service architectures and implement stable code structures.Experience deploying and monitoring servers in Kubernetes environments for stable operations is a plus.Experience and skills in developing and operating production services that handle high traffic or have stringent SLAs are desirable.A background in solving large and complex problems through software technology or creating business impact through services or products is advantageous.No prior ML experience is required, but a strong interest in AI/ML and a desire to gain experience in this area is welcomed.Resume Recommendations:Provide concrete examples of practical server development experience in your resume.Include details about technical considerations and your actual implementations while solving problems.If you have experience comparing costs and benefits among choices when balancing architectural complexity and development resources, please include that.Detail any projects that have made a business impact.Discuss experiences where you applied developed products in production and refined them based on performance metrics.Your Journey to Joining Toss Bank:Application submission > Live coding test > Job interview...

Mar 9, 2026
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companydaangn logo
Full-time|On-site|SEOUL

Welcome to Your Journey with daangn!At daangn, we strive to cultivate an environment where individuals can grow alongside the company as we evolve.The daangn recruitment team is here to assist you in reaching moments of meaningful collaboration with wonderful colleagues. Introducing the Identity Service TeamThe Identity Service team is responsible for managing membership and authentication at daangn. We develop a range of features related to authentication and user management to ensure that all customers can use our services safely and smoothly. We aspire to create a world where every local service is connected through daangn, aligning our growth with scalable and secure membership services. We continuously explore ways to provide a better user experience while safeguarding personal information and ensuring customer safety.How the Identity Service Team OperatesHealthy Conflicts for Better OutcomesWe embrace constructive disagreement for improved results. By respecting each other and engaging in open discussions, we make better decisions.Prioritizing Purpose Over MeansWhat we aim to achieve is of utmost importance. We select the appropriate means aligned with our goals and remain vigilant to ensure that means do not overshadow our purpose.Thinking Beyond the Team for Company-Wide ImpactWe consistently consider ways to create greater value across the organization, moving beyond simple problem-solving.Vision for Present and Future GrowthWe focus on sustainable choices that remain viable even after significant growth, not just immediate solutions. Technologies Used by the Identity Service TeamGo, gRPC, gRPC-GatewayMySQL, Redis, KafkaKubernetes, Istio Daangn Tech Meetups#1 Separating daangn's Membership System into Microservices#2 Life After Separation into MSA: Growth of Go Server#3 Replacing the Lock Mechanism of a Running Car: Centralization of Authentication Systems Daangn Tech Blog Link to Blog

Feb 3, 2026
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companyToss Payments logo
Full-time|On-site|Seoul

Introducing Toss Payments Toss Payments aims to understand the challenges and inefficiencies in business and provide all necessary solutions from technology to operations. We strive to deliver an easy and convenient service experience for consumers while ensuring that our merchants can focus solely on their business. With a core goal of 'innovating the electronic payment market', we operate under principles of autonomy and responsibility in a culture of mutual trust. We are looking for colleagues who can help shape the future of the payment industry. About the Team You'll Join The SMM Sales Team is part of Toss Payments' Sales Tribe. The Sales Tribe consists of various teams responsible for sales and partnerships with existing/new clients, affiliate companies, and overseas payment firms, as well as marketing and sales strategy development, all driving the growth of Toss Payments. The goal of the SMM Sales Team is to secure continuous revenue growth and momentum through direct sales targeting small to medium-sized clients. Your Responsibilities Build strong relationships with small to medium-sized clients and lead the sales growth of Toss Payments' diverse payment products and services. Understand the overall payment market and identify data-driven market dynamics to develop and implement tailored strategies for clients. Lead and take responsibility for the sales process, including introductions, negotiations, and onboarding for core payment products. Identify and coach new sales personnel to enable them to conduct direct sales to multiple merchants. We Are Looking For Someone Who Has persuasive communication skills and has successfully negotiated both with clients and within previous workplaces. Can define various problems arising during the client sales process and possesses problem-solving capabilities to address these with flexible thinking. Preferred Experience/Skills Experience using CRM and sales operation automation tools such as Salesforce is a plus. Ability to understand and clearly explain complex products, policies, and processes is advantageous. Experience in leading a team or managing sales would be a valuable asset. Joining Toss Payments Application submission > Job Interview > Cultural Fit Interview > Reference Check > Compensation Negotiation > Final Acceptance & Onboarding A Note for Future Colleagues"Finding growth opportunities through sales and creating significant success through negotiations and problem-solving is truly rewarding." I joined Toss Payments after working in sales at a global company. Previously, my authority and scope for proposals and negotiations were limited, but at Toss Payments, I have the autonomy to define my approach to managing the entire sales deal. Moreover, if you can persuade and gain the empathy of colleagues rather than seeking permission or approval, you can lead and close significant deals that impact the entire Toss Payments organization. If you aspire to grow as a unique leader at Toss, apply for the Sales Manager position today!

Mar 9, 2026

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