About Ergonia Ergonia is a crypto-native trading firm with deep experience across DeFi and CeFi. We operate some of the most sophisticated, highest-volume trading systems in DeFi and actively trade across major centralized venues as well. Our work spans market making, yield strategies, and advanced on-chain execution. We’re hiring a DeFi Engineer to help us expand to more chains, more protocols, and new trading strategies. You’ll work closely with traders, quants, and engineers in a fast-moving, high-performance environment. What You’ll Do On-Chain Data + Execution Build systems to read high-volume, low-latency data from blockchains. Send and manage transactions in performance-sensitive environments. Smart Contract / On-Chain Program Development Design, implement, and deploy production smart contracts on Solana or EVM environments. System & Architecture Design Contribute to end-to-end exchange, execution, and data-pipeline architecture. Pragmatic Delivery Trading moves fast. You should be comfortable making decisions with imperfect information, handling trade-offs, and delivering working systems on tight timelines. We value engineers who can prioritise what matters, move quickly, and get things shipped. An ability to execute under pressure Remote Work Essentials Reliable high-speed internet and a suitable workstation setup for sustained development and communication. Requirements