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Nexus Corporation

Lead Software Engineer

Nexus Corporation

Tokyo, Japan
CDI
Publié le 5 novembre 2026

Description du poste

Position: Lead Engineer (FinTech Platforms) Overview Our client is seeking an experienced Lead Engineer to drive technical initiatives and oversee system operations for high-scale payment and marketing services. As their product offerings expand, our client is building a stronger engineering team to enhance system stability and user experience. In this role, you will take ownership of existing systems, make key architecture and code-level decisions, guide junior engineers, and lead future system modernizations while collaborating closely with project managers, product managers, and business stakeholders. Responsibilities Technical Leadership & Architecture: Drive technical decisions, guide architecture design, review code, and provide hands-on technical mentorship to engineers across multinational development teams. System Operations & Modernization: Oversee the operation and maintenance of high-availability, high-scale platforms while leading plans for system replacement and version upgrades. Execution & Delivery: Partner with project managers to drive development deliverables that align with quality standards, deadlines, budgets, and scope. Mandatory Qualifications 5+ years of software development experience covering end-to-end service lifecycles (design, release, and operations). 3+ years managing/maintaining the same system, with proven experience leading teams through system upgrades or major architectural renewals. Strong schedule management, task planning, and cross-team coordination capabilities. In-depth technical knowledge of RDBMS, Redis, Kafka, Kubernetes, RESTful APIs, and high-availability architecture design. Practical experience designing, developing, and optimizing scalable web applications with Java and Spring Boot. Desired Qualifications Hands-on experience with cloud platforms (Azure), Docker, CI/CD pipelines, and performance testing. Demonstrated experience acting as a Tech Lead or leading development teams. Work Environment Team Structure: Collaborative environment with a flat, cross-cultural team structure composed of internal engineers and external vendor partners. Tech Stack: Java, JavaScript, Python, Go, MySQL, Redis, MongoDB, Git, Linux, Azure, Kubernetes, and RESTful APIs under Agile/Waterfall methodologies. Show more Show less