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Senior Backend Engineer (Blockchain & Web Applications) - Cross-Border Remittance Infrastructure

Japan
Full Remote
This Job is No Longer Active This position is no longer accepting applications

Lead the development of a cross-border remittance infrastructure using blockchain and stablecoins, building scalable backend systems and blockchain integrations. Drive technical excellence in a fast-growing fin-tech startup aiming to become a global deep-tech leader. Collaborate cross-functionally to establish development standards, mentorship, and organizational culture in a fully remote, flexible environment.

Key Highlights
Build and scale a cross-border remittance infrastructure leveraging blockchain and stablecoins for global financial transactions.
Lead backend development for web applications and blockchain integrations using Go, Rust, and Solidity.
Establish development processes, mentorship, and technical documentation for a new, high-growth team in a fully remote setting.
Key Responsibilities
Design and implement scalable backend systems for cross-border remittance infrastructure using blockchain and stablecoins.
Develop and maintain blockchain applications using Go, Rust, and Solidity for Ethereum, BNB Chain, and Cosmos networks.
Establish development standards, code reviews, and mentorship programs for a new team in a fully remote environment.
Collaborate with product and business teams to define technical requirements and drive innovation in fin-tech solutions.
Ensure system quality, security, and performance through rigorous testing, monitoring, and DevOps practices.
Technical Skills Required
Go Blockchain Development PostgreSQL
Benefits & Perks
Annual salary: 7,000,000 JPY - 18,000,000 JPY
Fully remote work with flextime system
Full social insurance, commuting allowance, stock options
High-spec MacBook Pro, ergonomic workstation setup, and cloud environment credits
Unlimited coffee, lounge work environment, and conference participation expenses covered
Qualification assistance (up to 30,000 JPY per year)
Book purchase expenses (up to 10,000 JPY/month) and library access to O'Reilly publications
Nice to Have
Experience with Design Docs or ADRs for system development requirements
Product development experience in FinTech
Technical public relations or recruitment activities
Blockchain-related development experience
Experience organizing system development foundations and review processes

Job Description

★Backend (Web Application Development) - Specialist | Featured Fin-tech Company

  • Business Level Japanese Required

◆ Famous Venture Company

◆ Flextime & Fully Remote Work

◆ Own Products/Services

◆ Great Welfare

◆ Annual salary: 7 million yen -18 million yen

-------------【About the company】-------------

The company creates value through technology by implementing blockchain in society.

In order to promote the social implementation of blockchain, the company conducts PoC with partner companies, business planning, and R&D in the areas of scalability and interoperability, which are challenges for blockchain.

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