Staff Smart Contract Engineer (DEX Aggregator Focus)

About the Role

We are hiring approximately 3 Senior/Staff Smart Contract Engineers for a 12-month (potentially ongoing) DEX aggregator project, similar to Jupiter (Solana liquidity aggregator for optimal swaps), KyberSwap (multi-DEX routing library), 1inch (price-optimizing aggregator), or 0x (off-chain relay with on-chain settlement).

The key focus is end-to-end prototyping and optimization, including quotes, lending/liquidation/oracles, and DEX trading-with trading as the highest priority. Deliverables include a TypeScript-based private NPM package SDK across 5 sub-milestones, plus a MetaDEX aggregator and trading terminal inspired by Speed.

Work is split with 80%+ dedicated to TypeScript/SDK development, quote aggregation, and optimization, alongside some low-level smart contract work (primarily EVM/Base; SVM/Solana ideal but trainable). Candidates need 5+ years of relevant experience (10+ preferred for screening), with an ideal background from 1inch, 0x, or Jupiter-though we're flexible for strong fits given funding constraints.

Key Responsibilities

• Directly build and maintain a DEX aggregator (e.g., Jupiter, Relay, KyberSwap style), prioritizing DEX trading/aggregator experience over lending.
• Drive end-to-end DEX aggregator prototyping and optimization, including liquidity/latency.
• Contribute to research and design for lending mechanisms, liquidations, oracles, and related DeFi features.

Requirements

• Smart contract development on EVM/Solana (Solidity, Anchor, Rust), with experience writing contracts securing significant TVL
• Directly built/maintained a DEX aggregator (Relay, Jupiter, KyberSwap).
• Deep expertise in EVM/Solana TypeScript libraries (Ethers.js, Viem, Web3.js), DeFi, and DApp development.
• 10+ years software engineering with research background in scaling, parallelization, protocols, or distributed databases.
• DeFi/on-chain trading expertise (EVM/Base preferred, SVM supported)

Bonus Skills

• Experience with lending, liquidation, oracles.
• Solana (SVM) expertise.
• Proven leadership track record scaling high-throughput systems.
• Executive communication skills to collaborate cross-functionally with designers, engineers, and product managers.
• Understanding of EVM client software (e.g., Geth or Reth internals; deep knowledge a huge plus).
• Familiarity with database internals and high-performance database systems.
• Knowledge of current architecture trends/best practices in security, performance, and usability.
• EVM expertise preferred but not required.