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About this role
Seeking a Senior Backend Developer with blockchain experience to join Crypto Payment Processing. Remote position with a salary starting from $5000.
Description
We are a processing platform for receiving and sending cryptocurrency payments. Our product is a high-load backend with deep integration into blockchain infrastructure, plus convenient tools for clients: personal account, analytics, balance and transaction management.
Responsibilities
- 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
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
Conditions & Benefits
- 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).
Job Details
LocationRemote
AI Score★★★★★★★★☆☆ 8/10
PostedApr 29, 2026 (74d ago)
Tags & Skills
cryptodevfintechweb3Backend Developerremote
Tech Stack
Node.jsTypeScriptPostgreSQLREST APIWebSocketmicroservicesDockerCI/CDRedis
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