Senior / Staff Software Engineer - Protocol jobs in United States
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Sei Labs · 1 day ago

Senior / Staff Software Engineer - Protocol

positionUnited States
timeFull-time
remoteRemote
senioritySenior Level
date5+ years exp

Sei Labs builds open sourced technology for the high-performance Sei Blockchain, the first parallelized EVM Layer 1 blockchain designed to scale with the industry. They are seeking a Protocol Engineer to lead the development of core components of the Sei Blockchain, focusing on designing and optimizing foundational layers of a decentralized network.

BlockchainCryptocurrency
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H1B Sponsor Likelynote

Responsibilities

Write code to build the core sei blockchain (consensus, state management, etc.)
Proactively identify and drive optimizations and improvements to the product
Collaborate with our frontend team to fine tune our REST API to support our customers
Take ownership over your work and the work of the team

Qualification

Infrastructure EngineeringLayer 1 BlockchainTechnical LeadershipPerformance OptimizationEngineering Efficiency

Required

5+ years of infrastructure engineering experience
Proven results in building or scaling Layer 1 blockchains performance
A proven tech lead with experience planning and leading large projects with long-term impact on a single system or team
Strong technical grasp and excellent judgment on task prioritizations
Able to tackle complex engineering problems that deliver results
History of creating and applying new processes and tooling to increase engineering efficiency

Company

Sei Labs

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Sei Labs is the layer 1 blockchain uniquely optimized for 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
2022-02-06Undisclosed

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