プログラミング＆開発 jobs

Join a large-scale technology organization that powers payment and incentive platforms used across a diverse digital ecosystem. As a Software Engineer, you will contribute to the development, operation, and continuous improvement of secure, scalable, Java-based payment solutions.

Join a global algorithmic trading team to develop and enhance Java-based execution platforms used by front-office trading teams. You'll work across the full development lifecycle, collaborate closely with Quants, and support high-performance, real-time trading applications in a global environment.

Develops and enhances a high performance electronic trading platform, delivering new features, system improvements, and ongoing support. Requires strong Java development experience, ideally within algorithmic trading and distributed systems environments

This role leads technical feasibility, high-level design, and architecture standards for a large-scale API and API Gateway platform. You will guide engineering teams through clear technical specifications, code reviews, and hands-on contributions to elevate system quality and scalability.

Seeking an experienced Mainframe Specialist with deep expertise in insurance Policy Administration Systems, mainframe modernization, and hybrid architecture design across IBM Mainframe and open environments. The role requires strong technical leadership, stakeholder management, and global project delivery experience to drive large-scale transformation and modernization initiatives from strategy through execution.

This role leads server-side design and development for a newly launched consumer fintech service, delivering high-quality, scalable APIs and batch systems. You will collaborate across teams to ship impactful features used by thousands of users while driving engineering excellence.

Application Engineer responsible for designing, developing, and maintaining Java-based payment APIs and microservices, with a focus on scalability, security, and performance. Requires strong Java, Spring Boot, SQL, REST API, and microservices experience, along with business-level English communication skills.

Join a high-impact engineering team building secure, scalable payment APIs used across a global digital ecosystem. You will contribute end-to-end across design, development, and operation of Java-based microservices in a fast-paced, collaborative environment.

Join a collaborative engineering team delivering enterprise solutions for the insurance industry. You will work across the full development lifecycle, gaining exposure to architecture, business processes, and modern technologies.

Join a global engineering team to build modern, scalable web applications using React and TypeScript. This role offers an English-first working environment where Japanese is only required at a basic conversational level.

Drive end-to-end modernization of core insurance systems, leading complex IBM mainframe transformation initiatives and hybrid architecture design.
Partner with global stakeholders to deliver scalable, API-enabled solutions integrating legacy and open platforms.

Join a high-impact engineering team building incentive and payment platforms used across a global digital ecosystem. This role focuses on leading backend design and delivering secure, high-performance APIs at scale.

This role focuses on developing and maintaining Python-based APIs that support large-scale data transfer and orchestration processes across multiple storage and messaging platforms. The position involves working with Django, REST APIs, CI/CD, and DevOps practices to build reliable, high-availability data infrastructure and improve development efficiency.

Software Engineer specializing in payment platforms, responsible for designing, developing, and maintaining secure, scalable Java-based payment APIs and microservices. Collaborates with cross-functional teams to deliver high-performance payment solutions, optimize system architecture, and ensure reliability, security, and business alignment.

Join a large-scale digital services group to lead the design and development of high-quality Android applications used by millions. You will collaborate across teams to deliver performant, scalable features using modern Android technologies.

Join a growing product team to design and build backend systems powering a newly launched consumer-facing financial service. You will lead core design efforts, working across the full development lifecycle to deliver scalable, high-quality applications used by a large user base.

A full-stack application engineer with 7+ years of experience designing, building, and maintaining scalable systems while translating business needs into technical solutions. Requires strong expertise in Java or Python, DevOps practices, and cloud platforms (Azure, AWS, or GCP), with the ability to work in agile, cross-functional teams.

Join a leading international financial services environment as a Java Developer, where you will design, build, and maintain enterprise-grade applications supporting critical business functions.

Join a growing mobile team building a high-impact personal finance application within a large digital services ecosystem. You will lead core design decisions, develop robust iOS features, and drive quality through modern engineering practices.

Seeking a Senior Frontend Engineer to design, build, and maintain consumer-facing web applications using modern technologies like JavaScript and React. The role covers end-to-end development, performance optimization, system operations, and proactive problem-solving in an English-speaking environment.

This role focuses on building and evolving backend microservices for large‑scale e‑commerce platforms. You will take ownership of core systems that support customer rewards, order delivery logic, and high‑volume transactions.

This role is a Senior Full‑Stack Software Engineer position focused on building and maintaining enterprise‑scale internal applications using Python and modern JavaScript frameworks in a fully remote, agile environment. It offers long‑term stability, international collaboration, and strong potential for permanent conversion, with meaningful ownership over end‑to‑end technical solutions.

You will design, build, and maintain highly scalable financial services that power the ecosystem.

You will work on large-scale distributed systems and help evolve the platform architecture to deliver the next generation of credit card experiences.