Protocol Software Engineer - Consensus at Sei Labs · Web3Vacancy
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Protocol Software Engineer - Consensus

Hybrid
Market range (est.) $90k–$180k
◆ 6/10 cryptodefidevweb3
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About this role

Sei Labs is seeking a Protocol Software Engineer to lead the development of core components of the Sei Blockchain, focusing on performance optimization and decentralized networks.

Description

Protocol Software Engineer - Consensus

Company: Sei Labs
Location: New York, NY
Employment Type: Full-time
Workplace: Hybrid

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

About the Role

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 the engineering team and ecosystem partners, constantly innovating to push the boundaries of blockchain technology.

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 the frontend team to fine tune the REST API to support customers
  • Take ownership over your work and the work of the team

Requirements

  • 5+ years of infrastructure engineering experience
  • Proven results in building or scaling Layer 1 blockchains performance
  • 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
Job Details
Market range (est.)$90k–$180k
LocationHybrid
AI Score★★★★★★☆☆☆☆ 6/10
PostedJul 3, 2026 (8d ago)
Tags & Skills
cryptodefidevweb3Full Stack Developerhybrid
Tech Stack
Performance OptimizationEVMDecentralized NetworksLayer 1Low-level Systems DesignREST APIProtocol EngineeringInfrastructure EngineeringBlockchain InfrastructureState ManagementBlockchainConsensus

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