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Senior Software Engineer

Job in New York, New York County, New York, 10261, USA
Listing for: DeFinitive
Full Time position
Listed on 2026-02-16
Job specializations:
  • IT/Tech
    Blockchain / Web3, Systems Engineer
Salary/Wage Range or Industry Benchmark: 400000 USD Yearly USD 400000.00 YEAR
Job Description & How to Apply Below
Location: New York

Web3 / Deep Tech | up to $400k+ Total Comp.

If you get excited about low-level systems, consensus design, and pushing Rust to its limits, this one’s for you.

We’re partnering with a top-tier DeFi research & engineering lab, building a first-of-its-kind decentralised trading system designed from the ground up to be MEV-aware. This is not incremental DeFi, it’s protocol-level re-architecture with real economic impact.

They’re on the lookout for the 4th addition to this team - a Senior Protocol Engineer (Rust) to help design, build, and ship a high-performance execution engine and consensus system that sits at the core of the protocol.

  • Architecting and implementing a Rust-based execution engine and underlying consensus
  • Building protocol-critical extensions:
    data indexing
    , vault infrastructure
    , and backend services
  • Designing core mechanisms that directly influence market behaviour and execution quality
  • Collaborating with a small, elite protocol team working async-first
  • Writing clear public-facing technical documentation and diagrams
  • Continuously challenging assumptions and improving protocol design and implementation

This is hands-on, systems-level work - close to the metal, close to production

🧠 What They’re Looking For:

You’ll thrive here if you have:

  • Deep, production-grade experience with Rust
  • A background in high-performance systems (a-sync, networking, concurrency, architecture)
  • Familiarity with the EVM and Ethereum execution environments
  • Experience building highly
    critical systems (from scratch)
  • Comfort working autonomously in an a-sync team
  • MEV or high-frequency trading experience
  • Meaningful open-source contributions
  • Hands-on work with Ethereum execution clients (especially Reth
    )
  • Experience with EVM tooling such as Alloy
  • A maths or formal methods background
  • Up-to $400k+ total comp! (Base + equity & benefits; flexible by seniority)
  • Full-time role,
    remote-friendly or SoHo, Manhattan
  • Brand-new NYC office
  • 401k + match
  • 529 plans, high-yield savings, Roth IRA access & financial coaching
  • Gym / fitness reimbursement
  • Conference travel & global team offsites

🌍 Why This Is Worth a Look!

You’ll be joining a mission-driven group of builders and researchers working at the frontier of MEV-aware infrastructure and DEX design
, with deep ties across the Ethereum ecosystem.

The team actively collaborates with organisations such as Ethereum Foundation
, Uniswap Labs
, and Gattaca
, and contributes heavily to open source, including:

  • Reth
  • Alloy
  • Ethers-reth
  • A forthcoming canonical MEV tracing system built on Reth

Their work directly tackles Real problems. Real stakes. Real impact.

🧭 The Environment

  • High trust,
    high autonomy
  • Technically demanding, low-ego culture
  • Fast-moving, research-driven
  • Strong opinions, weakly held
  • Engineers who care deeply about how things work
  • If you’re a Protocol / Rust Engineer who wants to work on problems most teams never get close to - and you care about performance, correctness, and economic design - this is worth a conversation... Just reach out!
#J-18808-Ljbffr
Position Requirements
10+ Years work experience
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