CP
Senior Backend Developer (Node.js)
8.0/10
Crypto Payment Processing
From $5,000 USD
Remote
senior
about 1 month ago
May be outdated
cryptodevfintechweb3Node.jsTypeScriptPostgreSQLREST APIWebSocketmicroservicesDockerCI/CD
AI Summary
The vacancy is well-structured with clear responsibilities and requirements, but lacks some details on compensation and company presence.
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Description
What you'll do
- •Integration with blockchain nodes: monitoring on-chain events, parsing transactions, managing confirmations depth in EVM networks and UTXO chains (Bitcoin, Litecoin, etc.)
- •Development of receiving and payout services: address generation, hot/cold wallet logic, sweeping, fee estimation
- •Building a reliable transactional pipeline with idempotency, reconciliation, and double-entry API for the merchant cabinet: operation history, balances, webhooks, payout management
- •Designing and supporting REST / WebSocket API for frontend and external integrations
- •Participating in the design of microservice architecture and inter-service interaction
- •Optimizing database queries, working with high-load scenarios
Conditions
- •Work in a small, professional, and dynamic team without bureaucracy
- •We value initiative, responsibility, and attention to detail.
- •Flexible work format: fully remote, flexible schedule.
- •Competitive salary (in USD / USDT / RUB).
Requirements
- •5+ years of backend development experience, including 3+ years with Node.js / TypeScript
- •Practical experience with blockchain
- •Understanding of EVM networks
- •Proficient in PostgreSQL: complex queries, indexes, partitioning
- •Experience designing REST APIs: versioning, documentation (OpenAPI / Swagger)
- •Understanding of microservice architecture principles, experience with message brokers (Kafka, RabbitMQ or similar)
- •Experience with Redis: caching, queues, rate limiting
- •Understanding of financial logic: double-entry, data consistency, idempotency
- •Experience writing tests: unit, integration
- •Docker, basic knowledge of CI/CD
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