Senior Backend Engineer (Blockchain/Crypto)
The client is an innovative global fintech leader behind USDT, the world’s largest and most widely used stablecoin. We are looking for a Senior Backend Engineer with strong expertise in blockchain and crypto infrastructure to design, build, and scale high-performance backend systems interacting with EVM-based networks. This role focuses on blockchain integrations, transaction processing, distributed systems, and secure financial infrastructure at global scale.
About Vacancy
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Key Requirements
- 7+ years of backend development experience
- Strong proficiency in JavaScript / TypeScript
- Deep experience with Node.js in production environments
- Hands-on experience with Web3 libraries (ethers.js, web3.js, viem, etc.)
- Strong understanding of EVM architecture and smart contracts
- Experience designing scalable distributed systems
- Strong understanding of security best practices in crypto environments
- Hands-on experience with Docker and containerized environments
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Your Responsibilities
- Design, build, and maintain scalable backend services using Node.js (JavaScript/TypeScript)
- Develop and optimize blockchain integrations with EVM-compatible networks
- Implement Web3-based interactions (smart contract calls, transaction signing, event indexing)
- Build secure services for transaction processing, wallet operations, and balance tracking
- Integrate with RPC providers, blockchain nodes, and third-party crypto services
- Design event-driven and distributed architectures for high-load financial systems
- Optimize gas usage, transaction batching, and on-chain/off-chain communication
- Implement monitoring, logging, and alerting for blockchain infrastructure
- Ensure security best practices in key management, signing flows, and API protection
- Write production-grade, well-tested code (unit, integration, load tests)
- Collaborate with product, DevOps, and security teams in a fully remote environment
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We Offer
- Transparent strategy and thoughtful management that keep everyone aligned
- Space for personal growth and career development without limits
- A culture of continuous learning: internal courses, workshops, and English classes twice a week
- Skill up events where we share experience and stay on top of trends
- Competitive perks: flexible schedule, a strong compensation package, support for professional certifications, and generous vacation policy
- Team spirit that thrives through regular events, gatherings, and celebrations
Why Join Us?
Financial Rewards
- Compensation within the market
- Compensation review
- Bonus systems for specific teams
Employment Benefits
- Paid leaves
- Public holidays
- Referral bonus
- English lessons
Career Development
- Internal trenings
- Pluralsight
- Promotion opportunities
- PDP
Work Environment
- Flexible working hours
- No internal trackers
- Work-life balance
- Team building
- Workspace design
- Provide/reimburse the equipment cost
- Management environment
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