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| Job Position | Company | Posted | Location | Salary | Tags |
|---|---|---|---|---|---|
Tether | Ho Chi Minh City, Vietnam | $112k - $144k | |||
Tether | Sao Paulo, Brazil | $112k - $144k | |||
Tether | Buenos Aires, Argentina | $112k - $144k | |||
Tether | Milan, Italy | $112k - $144k | |||
Tether | Dubai, United Arab Emirates | $112k - $144k | |||
Tether | Madrid, Spain | $112k - $144k | |||
Tether | London, United Kingdom | $112k - $144k | |||
Tether | Abu Dhabi, United Arab Emirates | $122k - $138k | |||
Tether | Dubai, United Arab Emirates | $122k - $138k | |||
Tether | Islamabad, Pakistan | $122k - $138k | |||
Tether | Bangalore, India | $122k - $138k | |||
Confirmo | Dublin, Ireland | $86k - $93k | |||
Polygon Labs | United States | $106k - $109k | |||
Nexus | San Francisco, CA, United States | $120k | |||
LI.FI | Remote | $90k - $130k |
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