Back-end Developer (Blockchain)

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Company Overview & Vision

Founded in Singapore in April 2026, BitFit Labs is a dynamic software development startup dedicated to building high-quality, custom blockchain-related products tailored specifically to our customers' requirements. Our diverse product lineup includes centralized/decentralized cryptocurrency exchange solutions, secure crypto wallets, smart contracts, dApps, and more. We turn complex blockchain capabilities into seamless, secure, and intuitive user experiences for clients worldwide.

Role Summary

We are seeking a robust Backend Engineer to design, build, and scale the core services powering our customer-tailored products. You will be responsible for the architecture behind our cryptocurrency exchange solutions, wallet transaction management, and secure APIs that bridge off-chain data with on-chain smart contracts.

What You’ll Do

• Architecture: Design and implement scalable, secure APIs (REST/GraphQL) and microservices using Node.js (NestJS) or Go/Rust.
• Core Product Development: Build logic for crypto exchange order books, wallet transaction routing, and secure user management systems.
• Data & Blockchain Management: Handle integration with blockchain networks, transaction tracking, and secure database management (PostgreSQL, Redis).
• Security First: Ensure high-grade security standards for financial data, user assets, and system integrations.

What We’re Looking For

• Experience: 3+ years of backend development experience, preferably in fintech, e-commerce, or crypto-focused environments.
• Tech Stack: Deep expertise in Node.js (TypeScript), Go (Golang), or Rust.
• System Design: Strong knowledge of relational/non-relational databases, caching strategies, and asynchronous event processing.
• Problem Solver: Ability to understand diverse customer requirements and translate them into clean, modular backend architecture.

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