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| Job Position | Company | Posted | Location | Salary | Tags |
|---|---|---|---|---|---|
Rise and Fame | Los Angeles, CA, United States | $27k - $90k | |||
JPS Tech Solutions | United States | $72k - $75k | |||
Fun.xyz | New York, NY, United States | $84k - $90k | |||
USEReady | United States | $22k - $54k | |||
Keyrock | New York, NY, United States | $112k - $156k | |||
Old Harmony | Palo Alto, CA, United States | $108k - $173k | |||
Alexander Chapman | New York, NY, United States | $74k - $98k | |||
Binance | Asia |
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Crypto.com | London, United Kingdom | $126k - $150k | |||
GRVT TECHNOLOGIES | Singapore, Singapore | $72k - $96k | |||
Binance.US | United States | $145k - $162k | |||
Ledger | Paris, France | $50k | |||
0g Labs | Remote | $90k - $112k | |||
Kraken | United States | $96k - $192k | |||
OpenZeppelin | Remote | $88k - $210k |
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