Senior Full Stack Engineer in Seoul

This role is exclusively for candidates based in Korea with proficiency in Korean suitable for a business environment."Transforming Cancer Care with Artificial Intelligence"Lunit, an abbreviation of "Learning Unit", is a healthcare AI company dedicated to creating and providing innovative AI solutions that contribute to cancer diagnosis and treatment. Our mission is to leverage artificial intelligence technology to enable more accurate cancer diagnoses and predict treatment efficacy, paving the way for timely and personalized patient care. About Our TeamWhat We Do (Department Mission)The AI Platform Department builds a foundational platform that ensures the stable functioning of medical AI models used globally for patient diagnosis and treatment. We aim to contribute to early cancer detection and precise treatment through technology.How We Work (Work Style)A culture of rapid experimentation and continuous improvement based on real user feedbackA strong collaborative structure involving PMs, AI researchers, and engineers from the problem definition stageActive use of AI-driven development and automation tools to maintain quality while increasing speedTransparent technical decision-making through clear technical RFCs and code reviewsWhat Challenges Do We Solve? (Design Philosophy)Large-scale data infrastructure problems handling TB to PB of healthcare dataStability issues related to distributed learning and model serving on GPU clustersSecurity and governance challenges that meet medical regulations while ensuring research productivityEnsuring global quality and reproducibility of medical AI models distributed worldwideImproving usability and data-driven decision support for tools used by various professionsWho Will I Work With? (Co-workers)A team of highly skilled colleagues including global talents such as AI researchers, software engineers, and MLOps engineersAn environment where English and Korean coexist naturallyA culture that respects each other's knowledge and backgrounds, fostering mutual growth About This PositionWhat Will I Build? (Scope of Work)A medical data processing platformA large-scale model training and serving systemFoundation Model-based servicesA global SaaS medical AI platformA web UI for researchers, medical professionals, and engineersWhat Design/Engineering Challenges Will I Face? (Focus Area)Integrating disparate systems into a cohesive End-to-End platformDesigning a multi-cloud architecture that operates reliably in a global environmentDeveloping a large-scale data pipeline to handle TB to PB of healthcare dataMeeting unique regulatory and security requirements of the medical domainDesigning tool-based UX that considers diverse user workflowsCoordinating technical decisions and stakeholders at a project levelWhat Kind of Engineer Thrives Here? (Ideal Profile)Someone passionate about designing the “flow” and “structure” of entire systemsA self-starter who defines problems and devises solutionsAn individual who enjoys deep collaboration across various job rolesA person eager to learn and grow, even if the medical or AI fields are new to themSomeone who wants to create an AI platform with a global impactHow Will I Grow? (Opportunities)Experience in the comprehensive design of complex AI and data systemsExperience building a global healthcare AI SaaS platformGrowth within a large organizational structure that integrates Research, MLOps, and Engineering

Join Our Team!We are seeking a talented Full-stack Engineer to join Coupang Pay, focusing on the development of cutting-edge fintech products. As part of our dynamic team based in Seoul, you will have the opportunity to work on innovative projects that are transforming the financial technology landscape.

Company OverviewCoupang Pay, a spinoff from Coupang, is dedicated to meeting the growing needs of our customers by providing convenient payment and financial services. Our focus is on delivering innovative payment solutions to all users of the Coupang platform, from customers purchasing on Coupang and Coupang Eats to sellers utilizing our open market and merchants on Coupang Eats. We have developed one-touch payment services to enhance user experiences and launched deferred payment services for easier transactions. Our team accumulates rich fintech experience, pioneering new opportunities at the intersection of finance and technology. At Coupang Pay, we value:Wow the Customer: We prioritize customer trust and experience value.Dive Deep: There are no trivial problems; we focus on problem-solving and thoroughly review issues.Move with Urgency: We seek answers through action and avoid procrastination. Are you looking for a dynamic work environment where you can take initiative and grow? Join us on the journey at Coupang Pay!

Twelve Labs seeks a Senior Recruiter to drive engineering hiring in Seoul, South Korea. This role shapes the company’s technical teams by managing every stage of the recruitment process for engineering positions. Key responsibilities Create and implement strategies to identify and attract talented engineers Work closely with hiring managers to understand hiring goals and role requirements Oversee the entire recruitment cycle, including sourcing, interviewing, and guiding candidates through to offer acceptance Ensure sourcing efforts support Twelve Labs’ broader growth objectives Location This position is based in Seoul, South Korea.

About Us:Nitra is dedicated to revolutionizing the healthcare ecosystem by developing cutting-edge technology that enhances efficiency within the industry. Our mission is to empower healthcare professionals with innovative fintech and software solutions, allowing them to focus on what truly matters—providing exceptional patient care.Nitra offers an all-encompassing platform that includes vital credit and expense management tools, as well as a comprehensive medical supply marketplace. Our offerings are powered by advanced machine learning technologies, ensuring that physicians and medical clinics across the country have the resources they need to thrive.Founded by visionary entrepreneurs who successfully scaled their previous ventures to thousands of customers and achieved over $1 billion in public offerings, Nitra boasts a talented team with backgrounds from prestigious organizations including American Express, Plaid, and Goldman Sachs. Our work is further supported by top-tier venture capitalists such as Andreessen Horowitz and NEA, alongside a distinguished advisory board featuring cofounders from Square and Xendit, executives from Intuit, and high-level former government officials.At Nitra, we embrace a hybrid work model, with team members working in the office four days a week and enjoying a designated work-from-home day on Wednesdays.

Join fieldguide as a Senior AI Engineer and be at the forefront of innovative artificial intelligence solutions. In this role, you will collaborate with cross-functional teams to design and develop advanced AI models, contribute to cutting-edge projects, and drive AI strategy across the organization. Your expertise will help shape the future of AI at fieldguide.

Join Our Dynamic Team! The DevOps team at Zoyi is dedicated to enabling the product teams to swiftly and reliably deliver value through the establishment and management of a trustworthy infrastructure and self-service development platform.As the closest technical partner to the ChannelTalk product team, we tackle the repetitive and complex issues that arise during development, deployment, and operations, solving them through platform enhancements and automation.We are not merely a support organization for specific teams; instead, we standardize proven methodologies from the field to create a foundation that allows all product teams to independently develop, deploy, and monitor their applications.If you’re eager to enhance the intersection of technology and organizational practices across infrastructure, platforms, and products, we invite you to apply to the DevOps team!

Join Us in Conquering Cancer Through AILunit, an innovative healthcare AI company, is dedicated to developing advanced solutions for cancer diagnosis and treatment. Our mission is to leverage artificial intelligence to facilitate more accurate cancer diagnoses and predict treatment outcomes, paving the way for personalized and timely patient care. About Our TeamThe Lunit DevOps team is responsible for designing, implementing, and enhancing the infrastructure and platforms that ensure our services operate reliably and efficiently. We work collaboratively with development teams to tackle challenges related to deployment, operations, observability, security, and cost management as our services scale.We prioritize not only immediate incident response but also proactive enhancements to reduce future occurrences. Our efforts include refining CI/CD processes, standardizing deployment methods, and optimizing monitoring, logging, and tracing capabilities through Infrastructure as Code (IaC). About the RoleAs a DevOps Engineer, you will manage and optimize a Kubernetes-based infrastructure and deployment environment to ensure swift and secure service delivery. Your role will encompass improving operational practices and automation while balancing short-term responses with long-term enhancements, contributing to impactful changes in our services. Key ResponsibilitiesManage and respond to incidents in Kubernetes-based services and platforms.Oversee infrastructure and deployment changes using IaC (Terraform) and GitOps (ArgoCD/Helm).Enhance observability through effective monitoring, logging, and alerting systems.Strengthen CI/CD pipeline reliability and deployment stability.Analyze and optimize resource usage, costs, and performance issues.

Coupang is revolutionizing the shopping experience, aiming to impress every customer from the moment they launch the Coupang app to the moment their order arrives at their doorstep. Supported by an exceptional end-to-end e-commerce and logistics network, coupled with an unwavering commitment to customer satisfaction, Coupang has eliminated trade-offs regarding speed, selection, and price. We deliver remarkably fast shipping on millions of products, including fresh groceries, within hours across the nation, 365 days a year, to millions of consumers in Korea. Korea boasts one of the largest and most rapidly expanding e-commerce markets globally.Recognized as one of the '50 Smartest Companies in the World' by MIT Technology Review and one of Forbes magazine's '30 Global Game Changers,' Coupang also ranked second on CNBC's 'Disruptor 50' list in 2020.Job OverviewCoupang Pay is redefining the digital payments landscape at an unprecedented scale, facilitating millions of secure transactions daily across Coupang.com, Coupang Eats, and our network of merchants and partners. We are crafting swift, reliable, and innovative fintech solutions that cater to both consumers and businesses across Korea and beyond.We are searching for a Senior Staff Software Engineer who embodies both visionary technical leadership and hands-on development skills. This role encompasses architectural leadership, full-stack development, and expertise in distributed systems to deliver payment systems that achieve industry-leading scale, resilience, and speed.

Key Responsibilities:Conduct comprehensive intake meetings with hiring managers to clarify role specifications, providing insights and market data to guide decision-making.Work collaboratively with internal teams to craft and execute effective recruitment marketing and sourcing strategies.Assess candidate qualifications against job requirements, presenting a robust slate of candidates while nurturing talent pipelines.Maintain candidate engagement throughout the recruitment process by providing timely updates on their status.Collaborate with hiring managers to finalize offer details, utilizing market insights and compensation frameworks to inform recommendations.Guide and mentor fellow Recruiters and team members, fostering professional development.

About the Team You'll Join* As a Cloud Engineer (Cloud Platform Development) at Toss, you will be part of the Cloud Engineering Team, responsible for addressing and resolving issues within the Toss service infrastructure through a Cloud Native approach.* Joining this position means becoming a vital member of the Cloud Engineering Team.* Our goal is to optimize the infrastructure for Toss team members, ensuring a resilient system capable of handling large-scale traffic and preparing for potential failures.Your Responsibilities* Beyond utilizing cloud services, you will design, operate, and enhance them directly.* Analyze the infrastructure from a Cloud Engineer's perspective, providing solutions based on Kubernetes and OpenStack.* Implement features for performance optimization and operational automation of virtual infrastructure.* Develop monitoring, metering, and alerting systems to support the stability and efficiency of services at the virtual infrastructure level.* Adapt and improve open-source software for an in-house environment.* Build technical trust in cloud adoption and provide training and guidance to development and operations teams for seamless cloud utilization.We Want to Work With Someone Who* Is proficient in at least one programming language: Python, Golang, or C.* Understands REST APIs and database transactions.* Has knowledge and experience with OS, network, and storage technologies.* Is passionate about learning new technologies and actively applying them in operational environments.* Has a deep understanding of key OpenStack components such as Nova, Neutron, Cinder, Keystone, and experience in performance optimization.* Has experience in service operation and deployment using Kubernetes.A Note for Potential Colleagues"You will have the opportunity to experience cloud platform serving based on the latest trends of CI/CD and TDD."* Our team does not just 'write code.' We lead from problem recognition to infrastructure architecting, allowing you to experience the entire process of feature development, operation, and deployment automation. We constantly experiment with and apply new technologies, aiming for the highest level of operational automation and testing environments.* If you want to experience everything about cloud-native, discover a new career as an infrastructure developer, or are eager to learn more about infrastructure technology, we welcome you!

Welcome to the Journey of Joining daangn Team!At daangn, we strive to create an environment where individuals can grow alongside the company's expansion. We are dedicated to facilitating moments of joy and collaboration with wonderful colleagues. Introducing the Network TeamThe Network Team aims to deliver secure and high-speed network services to daangn customers. We design and operate a network environment optimized for hyperlocal businesses and a global service network, ensuring that daangn users remain seamlessly connected while being responsible for infrastructure stability and scalability.We enhance efficiency by automating repetitive operational tasks and visualize traffic flow and status across the network in real-time to quickly detect issues and respond proactively. Our core role also involves maintaining service quality during traffic surges and protecting the platform from network security threats.Key ResponsibilitiesDesign and operate daangn's Service/Office Network Architecture (Cloud, Wired, Wireless).Design and operate Network Security Architecture.Develop and operate Network Observability and Automation platforms.Ideal CandidateMinimum of 5 years of practical experience in Network Engineering.Understanding and operational experience with routing protocols such as OSPF and BGP.Experience with AWS or GCP cloud network environments (VPC, TGW, NAT Gateway, Cloud WAN, Direct Connect, Cloud Router, Interconnect).Experience operating wired and wireless network devices (Router, Switch, Wireless Controller, Access Point).Experience with NGFW, IPSEC VPN, and SSL VPN (ZTNA) (AWS Network Firewall, Palo Alto, Fortinet).Experience in building network monitoring systems.Ability to troubleshoot through network packet analysis.No restrictions on overseas travel.Preferred QualificationsExperience in network operations within IT companies or large-scale cloud service environments.Deep understanding of Kubernetes environments.Strong knowledge of Zero Trust frameworks.Experience analyzing network packets to block pattern and signature-based security threats.Interest in developing or automating network monitoring platforms (Go, Python, etc.).Proficient with IaC tools such as Terraform or Ansible.Additional InformationFull-time roles include a 3-month probation period.We prioritize candidates with disabilities and veterans in accordance with the 'Act on the Promotion of Employment of Disabled Persons' and 'Act on the Honorable Treatment and Support of Veterans'.Successful video interview candidates will be given assignments, which will be discussed in the role interview.Application Process1. Document screening → 2. Video interview → 3. Role interview (assignment) → 4. Culture fit interview and reference check → 5. Offer.

Join Us in Creating Future Classic Products! At ChannelTalk, we empower sustainable growth for businesses with our all-in-one AI messenger, designed to guide businesses in their direction through meaningful customer conversations. With the philosophy that 'the customer is the answer', we combine CRM-based consultation experiences with AI automation, offering a single solution that enhances customer service efficiency and improves customer experiences. We have achieved over 20% market share in Japan and are rapidly expanding into the U.S. market to establish ourselves as a global SaaS leader. We collaborate with top talent to create a product that symbolizes a generation, akin to Google Search or the iPhone—what we call a “future classic” product. We have many exciting projects ahead! We are looking for talented individuals to join ChannelTalk as a Software Engineer (Backend, Frontend, iOS, Android)! Our development team is divided into Core Team and Feature Team.For more details, please check the following link. (We encourage you to read it!) ChannelTalk Core/Feature Team Overview [Discover the Unique Appeal of ChannelTalk!] Website Blog YouTube Instagram SWE Related Content- CHANNEL DEVTALK 2025- Starting Your Development Career at ChannelTalk- ChannelTalk CTO's Insights on Desired Developers

Join SanDisk, a global leader in flash storage solutions, as a Senior Technologist specializing in Datapath Design and Circuit Design Engineering. In this role, you will be responsible for designing and implementing high-performance VLSI circuits, contributing to innovative storage solutions that impact millions of users around the world.As part of a dynamic team, you will collaborate closely with cross-functional teams to drive the development of cutting-edge technologies. This is an exciting opportunity to leverage your expertise in VLSI design and make a significant impact in the industry.

Who will you collaborate with?As a valued member of our team, reporting directly to the Sales Director, you will closely engage with the local sales and field service teams, as well as the project team at our Sisco facility. Your primary focus will be on brake systems, encompassing various responsibilities such as sales, business development, project management, and providing engineering support for Hyundai Rotem. How will you make an impact?In this role within the OE Sales team, you will spearhead project sales of brake systems to our clients. You'll coordinate with our Sisco to ensure product suitability for project specifications, address technical challenges with customers, and cultivate long-term relationships. A glimpse into your daily responsibilities:Manage all sales operations for the brake systems business;Lead local project initiatives, ensuring they align with our company's strategic goals;Identify and pursue business development opportunities to meet sales targets;Promote Faiveley Transport’s comprehensive engineering solutions, including services and products for the designated product line;Define engineering requirements based on customer needs and facilitate technical coordination with our HQ and SisCos in Europe;Assist local customers with the application of products within Brake Systems, Air Generation & Dryer, Actuator, and Pneumatic Valves;Address customer quality concerns and liaise with manufacturing sites to resolve issues;Collaborate with customers’ engineering, design, maintenance, project management, and procurement teams to explore new business avenues;Serve as the main point of contact between customers and our SisCo in Shanghai and Europe to ensure technical coordination;Maintain databases and support payment collection efforts;Regularly meet with customers to understand their needs and requirements;Some business travel may be necessary. Key Technical Responsibilities:Define the functions of brake systems at the train level and lead engineering studies to achieve performance targets;Prepare technical proposals and system documentation, including requirements specifications and schematics;Define and conduct commissioning tests for brake systems;Carry out functional and software verification testing;Conduct system-level Failure Modes Effects and Criticality Analysis (FMECA);Collaborate with the HQ engineering team on brake calculations;Support final assembly and verify designs through both static and dynamic tests. What we are looking for:A degree in Mechanical or Electrical Engineering or a related discipline;Strong communication skills and ability to work collaboratively in a team environment;Proven problem-solving abilities in a technical context.

Join Our Team! The Recruitment Team at ChannelTalk is a pivotal organization that shapes the growth trajectory of our company.As we approach Series D funding, our top priority is enhancing our talent density. We play a crucial role in identifying and connecting with top-tier talent necessary for ChannelTalk to ascend to the league of global SaaS giants like Notion, Slack, and Zoom.Our recruitment team collaborates closely with Hiring Managers across the organization to define the ideal candidate profiles and implement diverse strategies. We prioritize outbound recruitment, believing that persuading external top-tier talent is our most critical skill.We are firm believers that attracting exceptional colleagues is the strongest leverage for company growth. While we recognize that increasing talent density is a challenging mission, we invite you to apply if you are eager to achieve remarkable results together.

About the Team The Data Engineer (CPC) position will be part of the CPC Platform team within the Data Division of Tossbank. The CPC Platform team is dedicated to building a reliable data framework to meet various regulatory requirements (CPC, disclosures, regular reports, etc.) from financial authorities, enhancing both Tossbank's external credibility and internal operational efficiency through automation and advancement. This team thrives in an environment that demands frequent and complex queries, high standards of data integrity, and reproducible data management, allowing members to solve diverse problems while deepening their understanding of the banking domain and data engineering skills. Key Responsibilities Implement and respond to external data requests from financial authorities (CPC, disclosures, periodic reports) through system integration. Design, develop, and operate necessary data marts and dashboards for the required data. Ensure the reliability of reporting systems through data quality management (DQ). Collaborate with various departments such as lending, deposits, cards, and delinquency to provide data support for data-driven decision-making. Systematically manage reporting tasks based on banking laws and regulations. Ideal Candidate Profile Proficient in SQL, capable of extracting necessary data accurately and efficiently. Interested in exploratory data analysis and deriving meaningful insights. Enthusiastic about building and managing information systems or data warehouses and dashboards. Possess a strong sense of responsibility for data quality, capable of leading smooth collaboration with related departments. Curious about technologies and tools for automation and system optimization beyond simple data tasks. Understanding or interest in open-source and Hadoop-based data environments is a plus. Welcomes junior candidates with a willingness to learn and adaptability to new technologies over financial domain expertise. Resume Submission Tips Detail impactful projects you've worked on, highlighting your proactive roles and the outcomes of your contributions. If applicable, describe your experiences responding to requests from financial authorities or external agencies, including your analysis of requirements and resolution strategies. Share experiences where you deeply engaged with your work, demonstrating your analysis of root causes and structural improvements. Discuss any instances where you proposed or considered improvements beyond existing practices, focusing on the process and results. Application Journey at Tossbank Application Submission > Job Interview > Cultural Fit Interview > Reference Check > Salary Negotiation > Final Acceptance and Onboarding Important Notes Any discrepancies in submitted resumes or disciplinary actions during employment history may lead to cancellation of the hiring process. Candidates who meet disqualification criteria as per Article 8 of Tossbank's employment regulations may have their applications canceled. Individuals with disabilities or veterans will receive preferential treatment as per relevant laws during the application process. A Word for Future Colleagues "You can grow your career in various paths such as Data or Finance sectors at Tossbank."

Role Overview Tosscareers is hiring an OpenStack Cloud Engineer in Seoul. This role focuses on designing, deploying, and managing cloud infrastructure using OpenStack. The engineer will help shape and maintain Tosscareers’ cloud services. What You Will Do Design and implement cloud infrastructure solutions with OpenStack Deploy and manage cloud environments to support business needs Work to improve the scalability, reliability, and security of cloud services What We Look For Hands-on experience with OpenStack Strong interest in cloud technologies Ability to support innovation and operational improvements in cloud environments Location This position is based in Seoul.

The Network Engineer role at Toss is part of the Infra Engineering Tribe in Seoul. This team collaborates with System Engineers and InfraOps Engineers to deliver infrastructure that keeps Toss services reliable, fast, and secure. The work supports Toss’s mission to advance financial technology and innovation. Role overview Build and manage network infrastructure for a range of Toss services. Develop and operate monitoring systems to ensure smooth network operations. Optimize network performance, addressing issues to maintain high service quality. Requirements Less than 5 years of experience in network construction. Strong understanding and hands-on experience with L2/L3 data center networks. Demonstrated initiative to improve networks and expand technical skills. Familiarity with TCP/IP and troubleshooting based on it is preferred. Experience working with others to identify and resolve network issues is valued. Experience with IPSEC VPN and L4 (SLB) is a plus. Knowledge of traffic or log monitoring using open source tools is advantageous. Resume tips Describe two memorable cases where technical issues were resolved, such as optimizations or bug fixes. Highlight project contributions, specifying your role, the technology stack, and improvements made before and after your involvement. Hiring process Application submission Job interview Cultural fit interview Reference check Salary negotiation Final acceptance and onboarding

As a Senior Specialist in Retail Operations, you will be pivotal in enhancing the performance of our retail stores. With extensive expertise in retail foundations and operations, your role will involve collaborating with store teams to actualize our retail vision effectively. You will liaise directly with HQ departments and experts to ensure successful project launches, implementations, and sustained excellence in our retail environments. Your responsibilities include acting as the primary contact for store teams, gathering crucial feedback, and providing operational solutions to foster continuous improvement.Key Responsibilities:Lead the comprehensive process for programs and initiatives that influence the retail store environment, focusing on implementation and ongoing enhancements.Design innovative systems and processes that enable retail teams to operate efficiently and in alignment with our brand ethos.Enhance communication strategies for retail teams, managing internal communications via the Intranet, HQ-to-store updates, and feedback channels.Champion change by identifying opportunities to optimize workflows and collaboration across stores and departments.Prioritize and manage complex workstreams, partnering with stakeholders to ensure timely delivery of objectives.Drive the execution of annual initiatives from the Global Retail Store teams to positively influence store growth and success.Serve as a subject matter expert on key retail pillars (people, product, operations, community, and marketing), staying updated on retail trends and best practices.