Flowdesk

DeFi Engineer – APAC

Flowdesk

full-time

Posted on:

Location Type: Hybrid

Location: Singapore • 🇸🇬 Singapore

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Job Level

Mid-LevelSenior

Tech Stack

Distributed SystemsFlashNode.jsOracleRustSolidityTypeScript

About the role

  • Design, develop, and maintain systems and smart contracts for trading, execution, and automation strategies across EVM and non-EVM chains.
  • Architect, develop, and maintain scalable backend services supporting on-chain and off-chain trading pipelines.
  • Collaborate with traders to implement and optimise DeFi trading strategies.
  • Integrate DeFi protocols into internal trading and risk systems.
  • Conduct on-chain simulations, audits, and exploit analysis to ensure reliability and prevent vulnerabilities.
  • Stay up-to-date with new DeFi primitives, execution models, and blockchain infrastructure improvements.

Requirements

  • Background in quantitative trading systems or on-chain market making.
  • Hands-on experience with DeFi protocol integration (AMMs, RFQs, lending, yield aggregation, or cross-chain messaging).
  • Strong proficiency in Solidity, and EVM fundamentals (storage layout, calldata encoding, gas refund logic, etc.).
  • Strong programming background in Rust, TypeScript for off-chain components and analytics.
  • Solid understanding of distributed systems and blockchain node infrastructure (RPCs, builders, relays, sequencers).
  • Proven understanding of blockchain security issues, including reentrancy, flash-loan attacks, and oracle manipulation.
  • Familiarity with gas optimization techniques, opcode-level reasoning, and transaction bundling.
  • Experience in analyzing transaction traces, simulating state overrides, or debugging on-chain executions is a plus.
  • Comfortable with testing frameworks (e.g., Foundry fuzz tests, Echidna) and mainnet forking environments.
Benefits
  • International environment (English is the main language)
  • An allowance of 400 SGD / per month / per person in the household
  • Team events and offsites

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
SolidityRustTypeScriptDeFi protocol integrationquantitative trading systemson-chain market makinggas optimization techniquesblockchain securitydistributed systemstransaction analysis