Staff Protocol Engineer

Polygon Labs

full-time

Posted on: 1/27/2026

Location Type: Remote

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About the role

Lead design and prototyping of long-term solutions to address scalability, latency, and state growth challenges on the Polygon PoS network.
Drive architectural decisions across the PoS codebase, contributing to Geth, Cosmos SDK, or CometBFT-based systems as needed.
Identify and resolve deep technical issues in protocol behavior, consensus, and state sync.
Champion code quality, documentation, testing, and developer best practices across the team.
Mentor and support engineers across the stack to elevate the overall engineering bar.
Collaborate cross-functionally with protocol researchers, DevOps, security, and ecosystem teams to ship robust upgrades to the live network.

7+ years of backend or protocol engineering experience, with 2+ years in senior or staff-level roles.
Deep experience working in Golang, ideally within distributed systems, consensus, or blockchain infrastructure.
Experience contributing to or working with Ethereum clients (e.g., Geth) or Cosmos-based stacks (e.g., Cosmos SDK, CometBFT).
Demonstrated ability to lead architecture, code quality, and complex system design in fast-paced engineering teams.
Comfortable working asynchronously with distributed teams in EMEA, US East Coast, or adjacent time zones.

Benefits

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Applicant Tracking System Keywords

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Hard Skills & Tools

Golangdistributed systemsconsensusblockchain infrastructureprotocol engineeringsystem designcode qualitytestingdocumentationarchitecture

Soft Skills

mentoringcollaborationleadershipproblem-solvingcommunication