Senior Security Engineer

Lightning Labs develops open-source software and non-custodial financial services that power faster, lower-cost Bitcoin payments over the Lightning Network.

Series B0 current maintainers0 active leadsTeam intelligence

Maintainer signals as of 9/25/2026

San Francisco, California, United States
About Lightning Labs

Lightning Labs is a software company building infrastructure for the Bitcoin Lightning Network. Its product stack includes Lightning Network node software, Taproot Assets, liquidity marketplaces, and non-custodial on-chain/off-chain liquidity services for developers, businesses, and node operators.

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Skills

About the Role

Devise and implement systems security policies and procedures, secure public-facing services, perform penetration testing and source code security reviews, and collaborate across functional teams to apply security best practices.

Requirements

  • At least 5 years of systems security experience
  • Ability to work with a high-impact, fast-moving startup team
  • Extensive knowledge of operating system and computer architecture internals
  • Strong understanding of cryptography, protocol design, and adversarial analysis
  • Experience reverse engineering and exploiting cryptographic protocol systems
  • Professional software development experience in Go, Rust, C/C++, and/or Java
  • Experience in security incident response
  • Experience in security code review and vulnerability triaging
  • Prior experience running an open source-facing bug bounty program
  • 2+ years of management experience or experience as a senior decision maker
  • Experience working with remote teams
  • Experience with Kubernetes and AWS infrastructure
  • Working knowledge of Bitcoin and Lightning design principles

Responsibilities

  • Design and deploy active fuzzing, black-box and white-box testing, and penetration testing infrastructure for open source and production systems
  • Perform security audits and review internal production systems and open source software interacting with Bitcoin and Lightning
  • Provide mentorship and guidance to teammates
  • Create global security policies, standards, guidelines, and procedures
  • Oversee security aspects of software release processes and infrastructure
  • Determine security team requirements for future growth
  • Develop and ensure responsiveness of security incident management processes
  • Perform risk management assessments