Senior Software Engineer - DeFi

Headquartered in Chicago with offices throughout the U.S., Canada, Europe, and Asia, we trade a variety of asset classes including Fixed Income, ETFs, Equities, FX, Commodities and Energy across all major global markets. We have also leveraged our expertise and technology to expand into three non-traditional strategies: real estate, venture capital and cryptoassets.

We operate with respect, curiosity and open minds. The people who thrive here share our belief that it’s not just what we do that matters–it's how we do it. DRW is a place of high expectations, integrity, innovation and a willingness to challenge consensus.

We are seeking a Senior Software Engineer to join our Unified Platform (UP) team as we make a major push into decentralized finance. UP consolidates data and technologies into a comprehensive solution, accelerating time to market. Optimizing decision-making and research, our platform simplifies implementing new ideas, enhancing our competitive edge.

The UP-Trade Operations team builds software that enables DRW's trading operations teams to manage our growing DeFi footprint. A big part of what makes this work interesting is figuring out where DeFi instruments map to traditional financial concepts, where they extend them, and where they are something entirely new. We need engineers who can reason about these protocols financially, not just technically, and build reliable systems around them at an institutional scale.

• Ingesting and normalizing data across multiple chains (Ethereum, Solana, and L2 rollups like Arbitrum, Optimism, and Base) and custody platforms (Fireblocks, BitGo)
• Integrating with DeFi protocols -- AMMs, lending platforms, options vaults, staking providers -- to query on-chain state and track positions
• Building services that bridge on-chain activity to off-chain reporting: token balances, transfers, margin positions, settlement, and fees across ERC-20, ERC-721, and ERC-1155 standards
• Developing APIs and UIs that give traders and operations teams real-time visibility into DeFi positions and risk
• Modeling DeFi instruments (liquidity pools, lending markets, perpetuals, yield products) alongside their traditional finance equivalents for unified reporting and risk

• Building systems with a constant focus on testing, reliability, scalability, and maintainability
• Designing, modeling, and programming in a variety of languages and technologies
• Working on legacy code as well as greenfield development
• Taking initiative and driving projects to completion
• Learning and promoting new technologies with a focus on best practices
• Providing on-call support as needed
• Sometimes working alongside other developers on the same task

We expect strong engineering fundamentals, but what truly sets candidates apart is hands-on experience navigating the DeFi landscape.

DeFi & Blockchain:

• Hands-on experience with EVM internals, smart contract ABIs, and libraries like ethers.js or web3.js


• Familiarity with DeFi protocols: AMMs (Uniswap), lending (Aave, Compound), options/structured products, or staking


• Understanding of multi-chain architectures -- L1s, L2 rollups, bridging, and cross-chain data challenges


• Exposure to Solana or other non-EVM chains is a plus


• Experience with Oracle systems (Chainlink) or on-chain pricing


• Ability to reason about DeFi protocols from a financial perspective, e.g. how different AMM designs affect pricing, how lending rates compare across protocols, or what distinguishes different stablecoin mechanisms

• Multiple years of server-side development


• Willingness to learn Clojure, one of the team's primary languages


• Confident JVM knowledge


• Working knowledge of Node.js/TypeScript


• A solid understanding of micro-service architectures


• Proficiency in domain-driven design and domain modeling


• A good understanding of functional paradigms and type theory

• Kubernetes, Docker, ArgoCD


• PostgreSQL, Oracle, SQS, RabbitMQ


• Linux, Ansible, Nginx, Git