Monaco Trading - Founding Engineer (DeFi) jobs in United States
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Sei Labs · 1 week ago

Monaco Trading - Founding Engineer (DeFi)

positionNew York City
timeFull-time
remoteOnsite
seniorityMid, Senior Level
date3+ years exp

Sei Labs is a crypto-native research and development group building high-performance infrastructure for open financial systems on the Sei Network. They are seeking a Founding Engineer to contribute to core engineering efforts, build trading infrastructure, and lead smart contract development.

BlockchainCryptocurrency
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H1B Sponsor Likelynote

Responsibilities

Contribute to the core engineering efforts behind Monaco’s CLOB (Central Limit Order Book), supporting both spot trading and perpetual futures trading instruments
Build and optimize low-latency trading infrastructure, with both on and offchain nuances
Lead the smart contract development for Monaco’s EVM-based perpetuals product (Solidity)
Improve performance of order matching systems with a strong focus on latency and reliability
Ship production code for Monaco v1 and lead explorations into v2 architecture with the Sei Labs

Qualification

Low latency trading systemsRustSoliditySmart contract developmentDeFi strategiesMarket structurePerformance optimizationGas fees

Required

3+ years of engineering experience, building low latency trading systems, ideally across both TradFi and DeFi stacks
Have worked at or adjacent to HFT firms (e.g., Citadel, Cubist, AQR, Jump, HRT) or were part of early engineering teams at CLOB protocols/perp DEXs (like dYdX, Hyperliquid, Vertex)
Bring experience in Rust and Solidity, with the ability to navigate low-level systems and smart contracts
Have built or traded DeFi strategies and understand the nuances of institutional users, market structure, performance optimization, and gas fees
Must be based in NYC or willing to relocate

Company

Sei Labs

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Sei Labs is the layer 1 blockchain uniquely optimized for DeFi DeFi
dateFounded in 2021
location
New York, New York, USA
people-size11-50 employees
web-link
https://www.seinetwork.io

H1B Sponsorship

Sei Labs has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
2024 (1)

Funding

Current Stage
Early Stage
Total Funding
$35M
Key Investors
Multicoin Capital
2023-04-11Series A· $30M
2022-08-31Seed· $5M
2022-02-06Seed

Leadership Team

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Jayendra Jog
Co-Founder
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Jeff Feng
Co-Founder
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Recent News

Cointelegraph
Xiaomi to pre-install Sei crypto wallet on millions of phones in global rollout
2025-12-12
Crowdfund Insider
Kalshi Adds Sei Integration
2025-12-03
PR Newswire
Monaco Research Names Ex-Goldman Sachs, GSR Trading Executive Simran Singh as Chief Executive Officer
2025-11-11
Company data provided by crunchbase