Job Closed

This listing is no longer active.

Alpen Labs logo
Alpen Labs

Bitcoin's financial system is coming online.

Security Protocol Engineer

Blockchain EngineerBlockchain EngineerFull TimeRemoteSeniorTeam 11-50Since 2022H1B No SponsorCompany SiteLinkedIn

Location

Worldwide

Posted

83 days ago

Salary

0

Seniority

Senior

5 yrs expEnglishRustSolidity

Job Description

Security Protocol Engineer

Alpen Labs

• 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

Job Requirements

  • 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
  • Bonus: protocol-level blockchain experience, audits, bounties, or custody systems

Related Categories

Related Job Pages

More Blockchain Engineer Jobs

Anchorage Digital logo

Product Member, Blockchain Researcher

Anchorage Digital

Trusted institutional partner in crypto and first federally chartered crypto bank

OtherRemoteTeam 201-500Since 2017H1B Sponsor

• Be a critical bridge between Anchorage Digital and the broader Web3 ecosystem. • Sit in our Protocol Specialist organization and be at the unique intersection of deep technical research, developer relations, and product strategy. • Be our expert-in-residence for key protocols, embedding yourself in their communities to demonstrate our technical leadership and create a tangible, value-add resource for our partners and clients. • Directly contribute to our growth by showcasing our expertise and differentiating Anchorage Digital in the institutional crypto landscape.

United States

Role Description In this role, you will be responsible for actively participating in research, prototyping ideas, transforming research prototypes into production, and conducting code reviews. Your responsibilities will also include: - Planning, implementing, and shipping end-to-end functionality. - Profiling bottlenecks, hardening cryptographic components, and testing them. Qualifications - Experience with modern cryptography. - Familiarity with zero-knowledge virtual machines (zkVMs). - Experience in blockchain or other peer-to-peer systems. - Motivated by decentralisation and privacy. Requirements - Solid Rust knowledge. - Understanding of cryptography and zk-based blockchain systems. - Ability to propose improvements to the core protocol. - Experience working across different time zones. - Strong asynchronous teamwork. - Alignment to IFT / Logos values. Bonus Points - Experience with RISC0. - Participated in building blockchain projects. - Conducted and implemented core protocol level systems. - Experience in testing systems and identifying vulnerabilities. Hiring Process - Interview with our POps team. - Interview with Zones Team Lead. - Pair programming task with the Zones team. - Interview with the Blockchain Team Lead. The steps may change along the way if we see it makes sense to adapt the interview stages, so please consider the above as a guideline. Compensation The expected compensation range for this role is negotiable, dependent on how we assess your skills and experience throughout our interview process. We are happy to pay in any mix of fiat/crypto.

United States + 1 moreAll locations: United States | Canada
Paxos logo

Software Engineer, Blockchain

Paxos

Paxos is a regulated blockchain infrastructure company building transparent and transformative financial solutions.

Full TimeRemoteTeam 201-500Since 2012H1B Sponsor

• Design, develop, and maintain mission-critical issuance systems that support tokenized assets across multiple blockchains. • Collaborate with cross-functional teams including product, compliance, and infrastructure to define system architecture and technical requirements. • Ensure the reliability, security, and scalability of our issuance services through best practices in software design, testing, and deployment. • Optimize existing issuance infrastructure to enhance performance, reduce latency, and improve operational efficiency. • Provide mentorship and technical guidance to junior engineers, fostering a culture of continuous learning and improvement. • Stay informed about emerging trends in blockchain, distributed systems, and financial technology to drive innovation within the team. • Participate in code reviews, architectural discussions, and technical decision-making processes.

Europe
Job Closed
Paxos logo

Senior Software Engineer, Blockchain

Paxos

Paxos is a regulated blockchain infrastructure company building transparent and transformative financial solutions.

OtherRemoteTeam 201-500Since 2012H1B Sponsor

• Design, develop, and maintain mission-critical issuance systems • Collaborate with cross-functional teams to define system architecture • Ensure the reliability, security, and scalability of our issuance services • Optimize existing issuance infrastructure • Provide mentorship and technical guidance to junior engineers • Stay informed about emerging trends in blockchain and financial technology • Participate in code reviews, architectural discussions, and technical decision-making processes

United States
$206K - $236.0K / year
Job Closed