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Senior Engineer - Networking/ P2P

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Polygon Labs

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Job Description:

As a Senior Engineer on the PoS Engineering team at Polygon Labs, you’ll focus on strengthening the peer-to-peer networking capabilities across all three of our core clients—Bor, Erigon, and Heimdall. This role is ideal for someone passionate about distributed systems and low-level networking, who wants to solve complex stability and connectivity challenges at scale. Working closely with a high-caliber team of engineers across time zones, you will play a key role in ensuring the network reliability and performance of the Polygon PoS chain. You’ll take ownership of diagnosing and resolving hard-to-find issues in our peer-to-peer layer and will help us evolve our network topology to meet the next phase of growth.

Job Responsibility:

  • Design, implement, and optimize peer-to-peer networking components in the Bor, Erigon, and Heimdall clients
  • Analyze and improve network stability by identifying peering bottlenecks, protocol edge cases, or propagation inefficiencies
  • Investigate incidents and contribute to root cause analysis (RCA) efforts related to network partitions, peer discovery failures, or gossip performance issues
  • Collaborate closely with internal protocol and infra teams to align client behavior with network goals
  • Contribute to client documentation and architecture discussions around networking layers and system resilience
  • Stay up to date with trends and developments in distributed systems and peer-to-peer infrastructure

Requirements:

  • 5+ years of experience in systems or infrastructure engineering, ideally working on distributed systems or blockchain clients
  • Deep expertise in Go (Golang), with strong knowledge of networking libraries, protocols (TCP/UDP), and debugging tools
  • Demonstrated ability to solve complex problems in live production systems with a proactive, ownership-first mindset
  • Experience working on peer-to-peer networking protocols or low-level infrastructure systems
  • Comfortable working in a remote, asynchronous environment across time zones (EMEA, East Coast US, or South America preferred)

Nice to have:

  • Prior experience working on blockchain or decentralized network infrastructure
  • Familiarity with the Ethereum ecosystem and Polygon PoS architecture
  • Exposure to multiple client implementations and consensus protocols
  • Strong written communication skills, especially around documenting technical findings or incident reviews
What we offer:
  • Remote first global workforce
  • Industry leading Medical, Dental and Vision health insurance
  • Company matching 401k with 3% match
  • $1,500 Home Office Set Up Allowance (life-time max)
  • $75 Monthly internet or phone reimbursement
  • Flexible Time Off
  • Company issued laptop
  • Egg freezing, mental health, and employee wellness benefits

Additional Information:

Job Posted:
February 14, 2026

Employment Type:
Fulltime
Work Type:
Remote work
Job Link Share:
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