Senior Smart Contract Engineer

About the role

Smart contract development converts product ideas into secure, production-grade code. The role operates within small, cross-functional teams that plan, build, and ship in small batches. A significant portion of time is spent on planning, code review, debugging, and ensuring reliable execution.

Software engineers turn product ideas into working code. Engineers work in small teams, review each other's work, and ship in small batches. Most teams follow agile practices such as sprints and daily standups. Engineers also write tests, fix bugs, and improve performance. The field values clear communication as much as technical skill. Engineers spend part of every week on planning, code review, and debugging, not just writing new code. The ability to explain a technical decision in plain words separates strong engineers from the rest.

Key facts

What you'll do

Production-grade Solidity contracts are delivered to broaden access to protocol trading logic, and these contracts provide the reliability users expect. Deployments to Ethereum mainnet in production environments rely on experience with complex smart contract systems to maintain correctness. Secure, efficient, and gas-optimized contract code for the Ethereum Virtual Machine is crafted to reflect deep protocol understanding. Technical decisions are explained in plain words during planning, code review, and debugging, which distinguishes strong engineers. Protocol behavior is shaped through interaction with advanced mathematical logic, and teams allocate regular time for planning, code review, and debugging.

Requirements

A bachelor's degree in math or computer science is required; verify the exact field At least 4 years of hands-on experience building and releasing production-grade Solidity contracts is required. Completion of E-Verify checks in the United States is required as part of employment conditions. A math or computer science degree is required to demonstrate a solid technical foundation.

Practical notes

E-Verify participation is required for employment in the United States. The role is based in New York with typical Uniswap Labs team arrangements.

Typical interview steps

Hiring for engineering roles usually starts with a recruiter screen, followed by one or two technical rounds. Candidates often solve a coding problem, discuss past projects, and answer system design questions. Some loops include a take-home task. Final rounds typically cover team fit and give candidates a chance to ask questions. Interviewers look for how you break down an unfamiliar problem, not just whether you reach the answer. Practicing a few problems aloud and reviewing your own past projects are the best preparation.

Good to know

Smart contract development relies on formal methods and rigorous testing to ensure correctness in financial systems. Protocol logic is expressed through code that interacts with mathematical constructs and economic incentives. Engineers use specialized tooling for security analysis, testing, and deployment automation. Continuous learning and clear communication help teams maintain reliability and evolve designs. Collaboration across product, security, and operations shapes how features reach production.

Questions to ask

Useful questions for the interview: what a typical week looks like, how work is assigned, what tools the team uses, and how feedback works. Asking how the role has changed recently and what the team wishes it had known when joining is also reasonable. Questions about the manager's priorities are especially valued.

Career growth

Engineering careers usually progress from individual contributor to senior, staff, and principal levels. Some engineers move into management and lead teams of five to twenty people. Others stay on the technical track. Growth follows demonstrated impact, not tenure alone. A typical engineering ladder has clear levels with defined expectations for scope, quality, and mentorship. Moving up usually requires owning outcomes end to end rather than completing assigned tickets.