Senior / Staff Software Engineer - Protocol
Sei is a high-performance Layer 1 blockchain optimized for trading applications with 400ms block finality and parallel transaction processing.
Maintainer signals as of 9/2/2026
Funding history
Projects
About Sei
Sei helps developers build fast, efficient applications by providing a trading-focused Layer 1 blockchain with parallelized execution. Users can trade digital assets at near-instant speeds, build high-performance decentralized exchanges, and deploy applications using familiar EVM tools.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
Lead development of core blockchain components, including consensus, state management, and protocol layers. Drive performance optimizations and product improvements, refine the REST API with frontend engineers, own team deliverables, and lead large long-term projects.
Requirements
- 5+ years of infrastructure engineering experience.
- Proven results building or scaling Layer 1 blockchain performance.
- Experience as a technical lead planning and leading large projects with long-term impact.
- Strong technical grasp and excellent judgment on task prioritization.
- Ability to tackle complex engineering problems that deliver results.
- History of creating and applying processes and tooling to increase engineering efficiency.
Responsibilities
- Build the core Sei blockchain, including consensus and state management.
- Identify and drive product optimizations and improvements.
- Collaborate with frontend engineers to fine-tune the REST API.
- Own your work and the work of the team.
- Plan and lead large projects with long-term impact.