Alpen Labs · 4 months ago
Security Protocol Engineer
New York City
Full-time
Onsite
Senior Level
5+ years expAlpen Labs is a New York-based startup focused on creating a scalable and private Bitcoin ecosystem through innovations in zero-knowledge cryptography. They are seeking a Security Protocol Engineer to own security across protocol-layer components, lead threat modeling, and maintain security CI tooling.
AppsInformation TechnologyInternetTrading Platform
Responsibilities
Own security across protocol-layer components (L2, bridge, custody)
Act as the final gatekeeper before code hits main
Lead threat modeling, design reviews, and mitigation planning
Write critical patches and drive hardening when bandwidth is limited
Maintain security CI tooling: sig-verification, SAST, fuzzing, secrets scanning
Review 100% of protocol-relevant PRs and enforce automated checks
Run secure coding workshops and pair-program during critical sprints
Interface with auditors and bounty researchers to scope, triage, and fix issues
Authority to block merges or deploys on security grounds
Direct commit access for emergency fixes
Qualification
Required
5+ years in security engineering with hands-on software experience
Strong background in Rust, Go, or Solidity
Deep knowledge of threat modeling and real-world exploit paths
Experience owning or maintaining CI-based security automation
Comfortable leading security without direct org ownership
Preferred
Bonus: protocol-level blockchain experience, audits, bounties, or custody systems
Company
Alpen Labs
Alpen Labs is a startup scaling bitcoin with zero-knowledge technology.
11-50 employees
Funding
Current Stage
Early StageTotal Funding
$19.1MKey Investors
Starknet FoundationRibbit Capital
2025-10-15Grant
2025-01-13Series Unknown· $8.5M
2023-01-01Seed· $10.6M
Leadership Team
Simanta Gautam
Co-Founder & CEO
Recent News
2025-10-16
2025-08-04
Company data provided by crunchbase