DeFi Engineer designing, building, and optimizing trading infrastructure for decentralized exchanges and protocols at Flowdesk. Engaging in quantitative finance, DeFi mechanics, and smart contract systems.
Responsibilities
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
Business Development Manager at Arrakis focusing on DeFi project partnerships and acquiring new TVL. Engaging with leading DeFi projects and driving market - making innovation.
Full Stack Engineer with front - end focus joining a DeFi firm to build end - to - end data pipelines and applications. Collaborating with AI and design teams to enhance user experiences in tokenized economies.
Quantitative Analyst researching DeFi innovations and supporting market - making strategies at Arrakis. Collaborate with cross - functional teams to enhance client services in a dynamic web3 environment.
Risk Manager overseeing credit and operational risk management for crypto products and DeFi at Flowdesk. Key contributor to global growth and risk infrastructure development.
Working student managing community engagement and social media for Blocksize, a DeFi infrastructure provider. Contribute to discussions and grow the organization's voice in crypto communities.
Mid - to - senior level strategy role focusing on Decentralized Finance and Traditional Finance topics. Oversee strategy workstreams and manage a team of associates in Hong Kong or Singapore.
Mid - to - senior level professional overseeing strategy workstreams in Decentralized Finance and Traditional Finance. Managing team initiatives and delivering business results through strategic initiatives.
Principal Software Engineer on the DeFi Yield Gen Platform team at Fidelity, developing secure crypto yield generation platform and mentoring engineers in a dynamic environment.