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| Job Position | Company | Posted | Location | Salary | Tags |
|---|---|---|---|---|---|
liso.xyz | United States | $92k - $150k | |||
dYdX | New York, NY, United States | $190k - $240k | |||
Albert Bow | New York, NY, United States | $90k - $100k | |||
Calyptus | United States | $68k - $90k | |||
BSOS | United States | $84k - $99k | |||
CoinLedger | United States | $68k - $78k | |||
Sei Development Foundation | New York, NY, United States | $111k - $119k | |||
Calyptus | United States | $68k - $90k | |||
Superlogic | New York, NY, United States | $150k - $170k | |||
D3 | Los Angeles, CA, United States | $68k - $90k | |||
Bondex | Louisville, KY, United States | $84k - $105k | |||
M Group Strategic Communications | New York, NY, United States | $36k - $65k | |||
CoinFlip | Chicago, IL, United States | $50k - $60k | |||
OSL | New York, NY, United States | $81k - $114k | |||
Alexander Chapman | New York, NY, United States | $77k - $85k |
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