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| Job Position | Company | Posted | Location | Salary | Tags |
|---|---|---|---|---|---|
Ripple | London, United Kingdom | $33k - $75k | |||
Status | Remote | $88k - $107k | |||
Keyfactor | Remote | $21k - $54k | |||
Bitso | Latin America | $68k - $90k | |||
Hivemind Capital Partners | New York, NY, United States | $75k - $90k | |||
Circle | New York, NY, United States | $190k - $242k | |||
Risk Labs | Remote | $76k - $100k | |||
Circle - Referrals | Remote | $69k - $82k | |||
Story Protocol | San Francisco, CA, United States | $72k - $75k | |||
Circle - Referrals | Remote | $187k - $240k | |||
Circle - Referrals | Remote |
| |||
Anchorage Digital | Portugal | $85k - $97k | |||
Kyrrex | UK or Malta | $150k | |||
Token Metrics | Karachi, Pakistan | $54k - $60k | |||
Token Metrics | Lagos, Nigeria | $54k - $60k |
SwapRail
Remote
Design and build the core backend systems powering SwapRail, including APIs, routing engines, execution services, and data pipelines.
## Responsibilities
- Design and implement scalable backend services and APIs
- Build routing and aggregation logic for swap execution across multiple liquidity sources
- Integrate on-chain and off-chain data sources (RPC nodes, indexers, third-party APIs)
- Develop simulation and validation layers for transaction execution
- Optimize system performance for low-latency and high-throughput scenarios
- Design data models for quotes, routes, transactions, and execution states
- Implement monitoring, logging, and observability across services
- Collaborate with wallet and frontend teams to ensure consistency in execution flows
## Requirements
- Strong experience with Node.js / TypeScript / Go / Rust
- Experience building high-performance backend systems
- Strong understanding of asynchronous systems and concurrency
- Experience with PostgreSQL and data modeling
- Familiarity with microservices architecture and distributed systems
- Experience integrating blockchain data or Web3 systems
## Nice to Have
- Experience with DeFi protocols or aggregators (1inch, 0x, Uniswap)
- Experience building trading or execution systems
- Experience with blockchain indexing (The Graph, custom indexers)
- Understanding of MEV, routing optimization, and slippage control
- Experience with caching layers (Redis) and performance optimization