Core Engineer (Rust/DeFi)

Join to apply for the Core Engineer (Rust/DeFi) role at Seer. A global crypto firm is building the next generation of financial infrastructure, combining DeFi integrations with institutional‑grade systems.

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• Build and scale systems aggregating and reconciling on‑chain and off‑chain activity across DeFi, exchanges, and custodians.
  
• Integrate directly with DeFi protocols (DEXs, AMMs, lending, derivatives) to track assets and exposures in real time.
  
• Design APIs and event streams for internal teams, ensuring performance, observability, and backward compatibility.
  
• Collaborate closely with Trading, Finance, and Compliance to deliver secure, production‑grade systems.
  

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• Strong coding skills in Rust (plus Python/TypeScript familiarity).
  
• Experience working with DeFi protocols.
  
• Solid understanding of crypto asset lifecycles (spot, perps, futures, options).
  
• Comfort with Postgres, message queues, and cloud environments (AWS/GCP).
  

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• Experience with PnL/accounting systems or risk/back‑office infrastructure.
  
• Knowledge of Solidity, ClickHouse, gRPC, or time‑series databases.
  

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• Entry level
  

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• Full‑time
  

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• Engineering and Information Technology
  
• Staffing and Recruiting
  

Location: London, England, United Kingdom

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