Backend Software Engineer - Merpay

About Us At startale, in collaboration with one of the world's largest financial conglomerates, we are on a mission to revolutionize the trading landscape by bringing Japanese equities on-chain. Our goal is to establish a secure, transparent, and high-performance trading infrastructure capable of supporting institutional trading volumes while remaining accessible to retail investors. We are developing a cutting-edge decentralized exchange featuring a fully on-chain order book, designed with a custom state transition function and a consensus layer specifically for high-performance, low-latency trading. Our aim is to create a trustless platform that matches the speed and efficiency of traditional trading engines while maintaining complete transparency by executing as close to the blockchain as possible. Position Overview We are looking for a Senior Rust Backend Engineer with substantial experience in constructing high-performance, reliable trading APIs (HTTP & WebSocket). In this role, you will be responsible for the design, implementation, and optimization of the backend services that power our trading interfaces, ensuring low latency, resilience, and accuracy under load. You will engage with high-throughput, real-time systems that manage order and trade data ingestion, handle live WebSocket feeds, and maintain the internal consistency of state from streaming market events. The ideal candidate will be a proficient Rust engineer and a systems thinker, able to reason about concurrency, data flow, and observability in production environments. This position provides a unique chance to influence the architecture of our trading backend at an early stage, collaborating with a distributed team of experienced engineers to build next-generation financial infrastructure.

Join Woven by ToyotaWoven by Toyota is at the forefront of a transformative journey, reimagining mobility for the 21st century. With a commitment to human-centric innovation, we aim to redefine what mobility means and how it can enhance society.Our initiatives are driven by four key pillars: AD/ADAS for autonomous driving technologies; Arene, our innovative software platform; Woven City, a pioneering testbed for mobility solutions; and Cloud & AI, the digital backbone of our operations. Together, we strive towards a singular, ambitious vision: achieving zero accidents and improving the quality of life for everyone.=========================================================================OUR TEAMAt Toyota, we are redefining movement. We focus on enhancing the transportation of people, goods, information, and energy. Woven City, our Living Laboratory™, is designed to test and refine these concepts in an evolving urban environment dedicated to well-being.We foster a diverse community of innovators to co-create groundbreaking products and services that integrate seamlessly with daily life, simulating a real city experience. Join us in this exciting journey towards the future of mobility.For further details on Woven City, explore: https://www.woven-city.global/ WHO WE ARE SEEKINGWe are dedicated to achieving zero traffic fatalities and enhancing safety through integrated solutions involving people, mobility, and infrastructure. Specifically, we are looking for passionate engineers with robust technical skills in machine learning model architecture to develop innovative infrastructure solutions that ensure smooth traffic flow and heightened safety.

About UsAt Tektome, we are pioneers in technological innovation within the Architecture, Engineering, and Construction (AEC) industry. Our mission is to elevate standards of excellence, push the limits of technology, and reshape the AEC landscape. As a spin-off from one of Japan's earliest AI firms, Incubit, we are seeking passionate professionals who share our vision. If you are a developer eager for challenges and excited to contribute to a groundbreaking tech firm, Tektome is the perfect place for you.Role OverviewAs a Senior Backend Software Engineer, you will play a vital role in architecting, developing, and maintaining robust, high-performance backend systems. This position merges hands-on coding with strategic planning and team collaboration to fulfill our technical vision. We value engineers who can create backend systems that ingeniously utilize various databases and their structures, enabling a cohesive ingestion, storage, and computation layer for AEC data types (including 3D geometry and raster data), which can be leveraged by AI systems.

About Woven by Toyota Woven by Toyota leads Toyota’s transformation into a mobility company. Drawing from a legacy of innovation, the team aims to broaden the definition of mobility and deliver real benefits to society. Woven by Toyota’s work centers on four main areas: AD/ADAS: Autonomous driving and advanced driver assistance technologies Arene: A software development ecosystem for software-driven vehicles Woven City: A testbed for new mobility solutions Cloud & AI: The digital foundation for collaborative projects Teams share a vision of a safer world with fewer accidents and greater well-being for all.

About the Role Drivemode is hiring a Senior DevOps Engineer to help shape and support our infrastructure and platform services in the Tokyo office. This position focuses on designing, building, and maintaining systems that keep our products running smoothly as we grow. What You Will Do Design and implement infrastructure solutions to support Drivemode’s products Maintain and improve platform services for reliability and scalability Work with development teams to streamline integration and deployment of applications Promote and apply DevOps best practices across projects Location This role is based in our Tokyo office.

About the Role In collaboration with SBI Group, we are pioneering a next-generation decentralized exchange (DEX) designed to transition the majority of Japanese equities onto the blockchain. Our mission is to develop a secure, transparent, and high-performance trading infrastructure capable of accommodating institutional trading volumes while remaining user-friendly for retail investors. The platform boasts a fully on-chain order book and operates on a custom state transition function and consensus layer specifically engineered for low-latency and high-throughput trading. As the Senior Quality Assurance Engineer, you will serve as the quality advocate for this platform, encompassing essential trading workflows, order book functionalities, matching algorithms, and backend services that facilitate execution. As the inaugural senior-level QA professional within the team, you will take ownership of the comprehensive quality strategy with a strong focus on automation, guaranteeing the accuracy, dependability, and performance of both API and end-to-end layers under real-world trading conditions. This is a hands-on position aimed at constructing robust end-to-end and API test coverage, rather than manual testing.

Join us in leveraging technology to create a significant positive impact on the environment!Kraken is at the forefront of groundbreaking advancements in the global energy sector.As a technology-driven company, we're dedicated to establishing a more intelligent and sustainable energy ecosystem. Our initiatives aim to optimize renewable energy generation, develop smarter grids, and empower utilities to enhance customer experiences, ultimately revolutionizing the energy industry for the benefit of all.This is an exhilarating time to be involved in energy. Join us in making a meaningful contribution to a more sustainable future.Our TeamOur engineering team consists of approximately 800 skilled professionals from diverse disciplines, including backend, frontend, and mobile engineers, who collaborate closely with UX specialists, copywriters, and designers. We adopt a Kanban-like methodology, utilizing tools such as Google Docs and Asana for work management, GitHub and CircleCI for our continuous delivery pipeline, and Sentry and Cloudwatch for performance monitoring. Kraken is an excellent environment for growth, where you'll learn from talented engineers and enhance your skills. Some of our coding standards are open-source.We uphold high engineering standards, practicing pair programming, conducting thorough code reviews, and maintaining rapid, high-value testing suites. Our culture fosters continuous learning through weekly tech talks, monthly blitz days (focused on tool enhancement and dependency upgrades), and active participation in tech meet-ups and conferences.Our coding conventions are open-source and we maintain a tech blog to showcase our work.At Kraken, you will thrive, collaborate with exceptional engineers, and elevate your technical expertise.Our TechnologyOn the backend, we primarily utilize Python, with most of our applications powered by Django, Django REST Framework, and GraphQL (Graphene). Our infrastructure heavily relies on AWS to support a continuous deployment pipeline. For more insights, check out our article on Django, ELB health checks and continuous delivery.

About xAIAt xAI, we are on a mission to develop cutting-edge AI systems that comprehensively understand the universe, empowering humanity in its journey for knowledge. Our compact yet dynamic team thrives on engineering excellence and is composed of passionate individuals who relish challenges and are driven by curiosity. We foster a flat organizational structure where every team member actively contributes to our collective objectives. Leadership opportunities are available for those who demonstrate initiative and consistently deliver outstanding results. Strong work ethic and prioritization skills are crucial. Furthermore, effective communication is essential, as all employees are encouraged to share insights clearly and concisely with their peers. About the TeamThe Enterprise Agents Engineering Team at xAI is comprised of innovative builders tackling the most complex problems in applied AI. We focus on integrating with intricate systems, orchestrating sophisticated workflows, and leveraging AI to revolutionize business operations. Our team is responsible for full-stack solutions, overseeing product execution from inception to deployment. We collaborate closely to infuse state-of-the-art AI advancements into robust, user-centric solutions. Through an iterative development approach, we engage with customers to gather feedback, refine features, and evolve our products to solve real-world challenges.About the RoleThe ideal candidate should possess the following qualifications:Proficient in either Rust or C++ programming languages.Proven experience in designing, implementing, and maintaining reliable, horizontally scalable distributed systems.Strong understanding of service observability and reliability best practices.Familiarity with widely-used databases such as PostgreSQL, Clickhouse, and CockroachDB.Additionally, candidates with the following skills will stand out:Advanced knowledge of Python programming.Experience with Docker, Kubernetes, and containerized application development.Expertise in TypeScript.Proficient in gRPC including unary, response streaming, and bi-directional streaming.

About Woven by Toyota Woven by Toyota works to support Toyota’s shift into a mobility company for the next century. Building on a legacy of continuous innovation, the team focuses on redefining mobility’s place in society and finding new ways for it to contribute, always keeping people at the center of their work. Key efforts span four main areas: Autonomous Driving and Advanced Driver Assistance Systems (AD/ADAS) Arene, a software production platform for Software Defined Vehicles (SDV) Woven City, a dedicated mobility testing ground Cloud and AI digital infrastructure supporting collaborative development Each function plays a part in moving toward a zero-accident society and the broader goal of making happiness accessible to more people.

About Appier Appier is a forward-thinking software-as-a-service (SaaS) firm harnessing the power of artificial intelligence (AI) to enhance business decision-making. Established in 2012, our vision is to democratize AI, transforming it into tangible returns on investment (ROI) by delivering intelligent software solutions. With 17 offices across the APAC region, Europe, and the U.S., Appier is publicly traded on the Tokyo Stock Exchange (Ticker: 4180). For more insights, visit www.appier.com. Open to overseas candidates/Visa Support This role is based in Tokyo, Japan. Our Japan office offers visa sponsorship to assist international candidates in their transition. About the Role As a Senior Software Engineer specializing in Backend Development, you will be instrumental in designing and constructing scalable, high-performance backend architectures for our OJM (Omni-channel Journey Map) and Aideal platforms. Your responsibilities include steering the technical roadmap for significant projects, mentoring junior engineers, and fostering a high-performing, agile team environment through collaboration with cross-functional teams.

Role Overview Western Digital is hiring a Supplier Innovation Engineer in Fujisawa. This role focuses on strengthening supplier partnerships and supporting new ideas throughout product development. The position plays a key part in improving how the company works with suppliers to bring fresh solutions to market.

Join Our Team as a Backend Product Engineer at MercoinWe are looking for a passionate Backend Product Engineer to join our Mercoin team at Mercari! In this role, you will develop and maintain our innovative cryptocurrency and blockchain services, enhancing the user experience and empowering financial transactions.This position requires proficiency in Japanese. Please note that the job description is only available in Japanese.About MercariShaping a Sustainable Future Through Value ExchangeFounded in 2013 by Shintaro Yamada during a global journey, Mercari aims to tackle the challenges posed by our finite resources. Our mission is to circulate all forms of value—beyond just physical goods and currency—enabling everyone to achieve their aspirations and contribute to society. With the power of technology, we connect people around the globe, creating a world where everyone's potential can be realized.Our Engineering CultureOur engineering principles embody the beliefs and actions that shape our organization. These shared values define our mission, culture, and vision, guiding us toward our long-term objectives. For more details, visit our Engineering Culture Page.About the Mercoin Backend TeamOur focus is on developing services related to cryptocurrencies and blockchain.We aim to simplify financial services through innovations such as receiving sales proceeds in Bitcoin and integrating credit, cryptocurrency, and asset management functions into a unified wallet experience.We are pioneering new transaction methods by leveraging blockchain technology for value exchanges, including NFTs.Our team develops core backend systems for cryptocurrency trading and user management, collaborating closely with product and trading teams to drive product growth.ResponsibilitiesDevelop and operate Bitcoin trading servicesCreate web applications and APIs using GoDesign interface specifications between microservices using Protocol Buffers and gRPCAnalyze user behavior logs to measure effectiveness and improve servicesDesign architecture based on application requirements and select suitable middlewareOptimize performance, monitoring, and alerting for microservicesDevelopment EnvironmentProgramming Language: GoInfrastructure: Google Cloud Platform (Compute Engine, Kubernetes Engine, Spanner, Cloud Storage, Pub/Sub, etc.)Configuration Management: TerraformAnalytics: BigQuery / Looker / Data StudioMonitoring: Datadog / PagerDutyCI/CD: CircleCI

Join Appier, a cutting-edge technology company, as a Senior Software Engineer specializing in Data Backend for our Enterprise Data Platform (EDP). This is an exceptional opportunity to work in the vibrant city of Tokyo, contributing to innovative data solutions that empower businesses across Asia.Your role will involve designing and implementing robust backend systems, optimizing data processing workflows, and collaborating with cross-functional teams to ensure seamless integration of data solutions. If you are passionate about data engineering and eager to make a significant impact, we want to hear from you!

Empowering Ideas Through DeploymentAt Tailor, we strive to simplify the complexities of product development, enabling everyone to become a creator. Our vision is to allow individuals to easily realize their ideas, breaking down the barriers between business and engineering, and integrating diverse expertise and technologies.We are looking for individuals who resonate with our mission to "democratize product creation".About the Tailor PlatformWe provide the Tailor Platform, a robust system for rapidly constructing business applications, supporting more people in becoming product creators.In essence, the Tailor Platform is a "Headless ERP for Enterprises", delivering core systems in a headless format to enterprises defined as those with over 3,000 employees.We pioneered the "Headless ERP" concept, significantly enhancing the flexibility and scalability of ERP systems, and are expanding our reach to large enterprises in Japan and mid-to-large companies in the USA.▼ Reference ArticleThe Vision Behind Tailor PlatformOur EnvironmentIn the mid-to-large enterprise sector globally, there is an accelerating trend towards combining numerous "Best of Breed" cloud SaaS solutions over traditional "all-in-one" package systems for digital transformation. This evolution is transforming the role of core systems, which must now adapt quickly to the rapidly changing business and technological landscapes, requiring systems that are API-driven for seamless integration with external software.As pioneers of the Headless ERP concept, we are building a next-generation application infrastructure to revolutionize corporate activities. We have already established a solid track record in replacing SAP-based systems in leading companies and among firms with over 30,000 employees.Job ResponsibilitiesYou will be responsible for developing the platform layer of our proprietary Tailor Platform and the BFF (Backend for Frontend) layer for individual applications, aiming to reduce the development time for enterprise business systems by a factor of ten.As a contractor, you will commit to product development as part of our team, just like full-time members.Specific Duties Include:This position primarily focuses on the development of the platform layer or the BFF layer for individual applications.Since the BFF needs to be launched quickly, you will leverage code generation, templates, and other tools while considering customer application requirements to develop an agile framework.The backend team is tasked with developing the platform layer or the BFF layer for individual applications. Given the need for rapid deployment of the BFF, the team will create highly agile frameworks by utilizing code generation and templates, closely aligning with customer requirements. The tech lead will serve as a hands-on manager, guiding the team by example.In particular, you will:Design and develop microservices applications using GoDesign interfaces for Backend for Frontend solutionsCollaborate with cross-functional teams to meet project goals

Join us as a Backend Software Engineer for Mercoin, where your Japanese language skills will be an asset. This position is crucial for the development of innovative services in the cryptocurrency and blockchain space.About the RoleEmployment Type: Full-timeWork Style: Flexible working hours (no core time)Location: Roppongi, Minato CityFor more details, visit our career site at Job Listings.About Mercari GroupWe aim to circulate all forms of value and expand opportunities for everyone.Founded in 2013 by Shintaro Yamada, Mercari was born from a desire to create a richer society in light of the Earth's limited resources. We believe in enhancing everyone’s potential by facilitating the exchange of value beyond just physical goods and money.Through the power of technology, we connect people around the globe and strive to create a world where everyone's potential is realized. For insights into our company culture, refer to the Mercari Culture Document.Team and MissionOur engineering principles define our shared beliefs and actions, reinforcing Mercari's mission, values, and culture from an engineering perspective.Join us in our mission to innovate in the cryptocurrency space, enhancing user experiences and financial services.ResponsibilitiesDevelop and operate Bitcoin trading services.Create web applications and APIs using Go.Design interfaces for microservices using Protocol Buffers and gRPC.Analyze user behavior through quantitative and qualitative measures to improve services.Architect application requirements and select middleware.Tune performance and monitor microservices.Join us in shaping the future of digital finance!

About Appier Appier is a pioneering software-as-a-service (SaaS) firm harnessing the power of artificial intelligence (AI) to enhance business decision-making. Established in 2012, our vision centers around making AI accessible to all, with the mission of transforming AI into tangible return on investment (ROI) through intelligent software solutions. With a presence in 17 offices across APAC, Europe, and the U.S., Appier is listed on the Tokyo Stock Exchange (Ticker: 4180). For further details, visit www.appier.com. About the Role Join our Tokyo office as a Senior Software Engineer (Ad Cloud Bidding) and engage in the development of diverse platforms and services that unify data and AI for our clientele. In this role, you will play a critical part in building scalable backend systems, while also being actively involved in service operations, including deployment, monitoring, and incident management, ensuring our distributed services remain reliable and high-performing. Responsibilities Design, implement, and enhance backend services Engage in code reviews and contribute to system architecture discussions Work collaboratively with cross-functional teams to deliver robust and high-performance systems Diagnose production issues and participate in root cause analysis Assist with system deployment, monitoring, and maintenance in live environments Join on-call rotations and lead incident response as necessary About You [Minimum Qualifications] Bachelor's or Master's degree in Computer Science or a related field 3+ years of professional experience in software development Proficiency in modern C++ programming (C++11 or later) Familiarity with Unix/Linux operating systems Strong interpersonal skills, problem-solving abilities, and a sense of ownership [Preferred Qualifications] Solid understanding of system programming principles Experience in developing low-latency (millisecond-scale) and high-throughput systems (over 1K QPS per machine) Expertise in service optimization and performance tuning Familiarity with modern build systems Experience with operational automation tools [Language Requirements] Fluent in English or Chinese. Open to International Applicants/Visa SupportThis position is located in Tokyo, Japan, with visa sponsorship available for overseas candidates.

Empower Your Ideas with TailorAt Tailor, we aim to simplify the complexities of product development, enabling anyone to become a creator. We envision a world where everyone can easily turn their ideas into reality, bridging the gap between business and engineering, and integrating diverse expertise and technology.We are looking for individuals who resonate with our mission of "democratizing product development".About Tailor PlatformWe support more people in becoming product creators by providing the Tailor Platform, a high-speed platform for building business systems.In short, Tailor Platform is a "Headless ERP for Enterprises" that offers core systems utilized by large enterprises (defined by us as those with over 3,000 employees) in a headless format.Having launched the world’s first 'Headless ERP', we significantly enhance the flexibility and scalability of ERP systems, targeting Japan's large corporations and mid-sized to large companies in the US.The Environment We Operate InGlobally, there is a growing trend among mid-sized to large enterprises to combine numerous "Best of Breed" cloud SaaS solutions instead of relying on all-in-one packaged systems for their digital transformation. Consequently, the role of core systems is rapidly evolving, necessitating the ability to adapt quickly to changing business and technology environments, along with easy and deep integration with external software via APIs.As pioneers of the Headless ERP concept, we are building the next generation of business application foundations that will revolutionize corporate activities. We are already making strides in replacing industry-leading SAP-based systems and establishing a track record with large firms employing over 30,000 people.Job ResponsibilitiesYou will be tasked with developing the platform layer of our proprietary "Tailor Platform" and the BFF (Backend for Frontend) layer for individual applications. This role aims to reduce the development period for business systems used by large enterprises to one-tenth of the usual time.This position primarily focuses on developing the platform layer or the BFF layer for individual applications. Since BFF needs to be launched rapidly, you will employ code generation, templates, and more while considering customer application requirements to develop a highly agile framework.The backend team is responsible for developing the platform layer or the BFF layer for individual applications. The tech lead will act as a playing manager, leading by example while being hands-on in the development process.Specific Duties Include:Design and develop microservices applications using GoDesign interfaces for Backend for FrontendDesign interfaces between microservices (Protobuf+gRPC / GraphQL)Implement directory services, custom databases, and gateways required for ERP systems

We are looking for a talented Backend Engineer to join our innovative team at fuku in Tokyo. In this role, you will be instrumental in designing and developing scalable APIs that drive our diverse applications and services. Your expertise will be crucial in enhancing our backend systems and ensuring optimal performance.Key Responsibilities:- Architect, develop, and uphold robust APIs.- Work closely with front-end developers and other team members to seamlessly integrate user-facing features with server-side logic.- Optimize applications for maximum speed and efficiency.- Diagnose and resolve technical issues to maintain high performance standards.- Produce clean, maintainable, and efficient code.

As an IT/OT Infrastructure Engineer at Bosch, you will play a pivotal role in establishing and managing the entire IT/OT infrastructure across Bosch's domestic facilities, including factories, warehouses, and offices. Your responsibilities will include troubleshooting systems and providing consulting to ensure a seamless delivery of IT services. You will oversee asset planning, procurement, and management of IT infrastructure equipment, driving strategic IT investments for the future. Compliance with Bosch's corporate regulations and security requirements is essential, and you will actively apply standard processes to ensure this. Moreover, you will be involved in global and regional projects, as well as internal and external audits, contributing significantly to the overall improvement of the organization.