Sei Labs
Technology & SoftwareDirect Ashby career site

Protocol Software Engineer - Consensus

Location
New York City, NY (Remote) · On-site
Job type
Full-time
Level
Lead / Staff
Experience
5+ years
Listed
22 days ago

Skills & highlights for this role

  • blockchain protocol design
  • consensus algorithms
  • distributed systems
  • performance optimization
  • REST API

Also useful

  • EVM

Protocol Engineering at Sei

Sei Labs is looking for a Protocol Engineer to lead the development of core components of the Sei Blockchain. You'll work at the forefront of blockchain infrastructure, designing and optimizing the foundational layers of a high-performance, scalable decentralized network. You'll collaborate closely with our engineering team and ecosystem partners, constantly innovating to push the boundaries of blockchain technology. If you're passionate about low-level systems design, performance optimization, and shaping the future of decentralized networks, this is a rare opportunity to make a lasting impact in Web3.

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.

Qualifications

  • 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.

About Sei Labs

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. The unique optimizations built into Sei enable Web3 applications to reach Web2 level scale and performance, driving the mass adoption of digital assets.

Our teams are comprised of former Google, Goldman Sachs, Robinhood, Nvidia, and Databricks veterans dedicated to onboarding the next billion users onto a vibrant ecosystem of applications.

Sei Labs has raised over $30M from top investors including Jump Crypto, Multicoin Capital, Coinbase Ventures, Distributed Global, Hudson River Trading, and Flow Traders.

Read the original posting

From Sei Labs's careers page, first listed on Rolev.ai on October 17, 2026. Rolev.ai is not the employer.

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Common questions

Where is the Protocol Software Engineer - Consensus job at Sei Labs located?

Yes, this Protocol Software Engineer - Consensus opening at Sei Labs is listed as New York City, NY (Remote) (On-site). Always check Sei Labs's application page for specific state eligibility or relocation policies.

What qualifications are required for Protocol Software Engineer - Consensus at Sei Labs?

For the Protocol Software Engineer - Consensus role, Sei Labs highlights 5+ years of relevant experience; experience with blockchain protocol design, consensus algorithms, distributed systems, performance optimization, REST API. Rolev.ai can score your existing resume against these requirements and show any skill gaps before you apply.

How do I apply for the Protocol Software Engineer - Consensus position at Sei Labs?

This listing links directly to Sei Labs's Ashby application page. You can apply directly on Sei Labs's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Ashby application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.

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