Senior Software Engineer - New Markets Japan
Senior backend engineer designing and operating scalable brokerage and financial systems for Japan, including market integrations, accounting, settlement, and regulatory requirements. Requires JLPT N1-level Japanese, business English, strong financial-systems expertise, and proficiency in a statically typed language.
About the job
Responsibilities
- Design highly scalable, mission-critical brokerage systems for the Japan market.
- Develop and enhance middle- and back-office systems, including gRPC microservices, REST and gRPC APIs, and third-party vendor integrations for the Japan market.
- Enhance the core framework to support multiple languages, currencies, and markets, including Japan-specific requirements such as NISA, MyNumber, withholding tax, and JP-GAAP accounting.
- Collaborate with regional technical leads and global engineering teams.
- Coordinate in Japanese with local regulators, vendors, partners, and business stakeholders, translating requirements into technical specifications.
- Troubleshoot incidents and bugs to maintain system integrity and performance.
- Participate in on-call rotations and support production issues during Japan business hours.
- Contribute to regional recruitment, cross-functional projects, engineering practices, mentoring, and team culture.
Requirements
- Native or JLPT N1-level Japanese fluency, including professional reading, writing, and communication.
- Business-level English fluency for meetings, design discussions, code reviews, and documentation.
- Experience designing and developing complex financial systems, preferably including double-entry accounting.
- Strong understanding of accounting principles, ledger structures, and transaction reconciliation.
- Experience building scalable, highly available financial applications handling multi-currency transactions.
- Familiarity with financial-market regulatory compliance, preferably in Japan.
- Proficiency in at least one statically typed language, such as Go, Rust, Java, Kotlin, C#, Scala, or C++.
- Experience with financial APIs, market-data integrations, and trade-settlement processes.
- Strong computer-science fundamentals and software-architecture experience.
- Ability to work independently in a fully remote, globally distributed team.
- Strategic thinking, strong problem-solving skills, and the ability to translate technical concepts into business strategies.
- Experience with domain-driven design and event-driven design.
- Ability to lead and troubleshoot incidents or bugs during Japan business hours.
Nice-to-haves
- Proficiency in Go or willingness to learn it quickly.
- Experience in Japan's financial-services sector.
- Experience integrating with JPX, JSCC, JASDEC, or major Japanese banks.
- Experience with NISA, iDeCo, tokutei-koza, or MyNumber handling.
- Experience at a startup or fast-growing technology company.
- Knowledge of emerging technologies and passion for financial markets.
- Experience managing vendors and organizational budgeting.
- Experience working with global, English-speaking teams across multiple time zones.
Compensation and benefits
- Competitive salary and stock options.
- Health benefits.
- One-time USD $500 new-hire home-office setup benefit.
- USD $150 monthly stipend via a Brex Card.
Skills
Go, Rust, Java, Kotlin, C#, Scala, C++, gRPC, REST APIs, Microservices, Financial Apis, Market Data, Trade Settlement, Domain-Driven Design, Event-Driven Design
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