Staff Security Engineer, Walrus

Mysten Labs; United States; Remote; USD 180,000 - 260,000; Full time

Job summary

Mysten Labs seeks a seasoned Security Engineer to serve as the primary security partner for the Walrus team, embedding security from design through release. You will lead security assessments for new features and drive actionable remediation plans across the Mysten ecosystem.

Responsibilities include mentoring engineers, shaping security standards, and promoting a security-by-design culture. You will leverage AI-driven tooling and collaborate with leadership to balance velocity with risk

Qualifications

• Bachelor’s or Master’s degree in Computer Science, Computer Engineering, or equivalent.
• 8+ years of industry experience in security engineering at staff level or equivalent.
• Experience as a security generalist across infrastructure, app, and crypto security.
• Proficient in automated security tooling and AI/ML for security improvements.

Responsibilities

• Act as the primary security partner for the Walrus team, embedding security practices throughout the lifecycle.
• Lead security assessments for new Walrus features and drive remediation plans.
• Foster a security-by-design culture across Walrus and Mysten.
• Leverage AI-driven tooling to identify and remediate security risks at scale.
• Mentor engineers and collaborate with leadership to prioritize security roadmaps.

Skills

Security engineering

Security architecture

Cross-functional leadership

AI tooling

Education

Bachelor's or Master's in CS/CE

Tools

Static analysis

Dynamic analysis

AI tooling

Job description

Mysten Labs believes that decentralized and open protocols are the bedrock of the internet of value. This is why at Mysten Labs, we are creating foundational infrastructure to accelerate the adoption of decentralized protocols based on blockchain technologies.

Responsibilities

• Act as the primary security partner for the Walrus team, providing deep architectural guidance and embedding security practices throughout the development lifecycle, starting from the design phase.
• Lead security assessments for new Walrus features while also contributing to security initiatives across the broader Mysten ecosystem, identifying systemic risks and providing actionable remediation plans for complex architectural challenges.
• Drive a "security-by-design" culture, ensuring that security considerations are front-and-center before code is written, within Walrus and the wider Mysten organization.
• Leverage AI-driven tools and advanced automation to identify and remediate low-hanging fruit, allowing the team to focus on high-impact, complex security research.
• Maintain a generalist security perspective, providing strategic oversight on broader infrastructure and product security issues as they impact Walrus and beyond.
• Collaborate with engineering leadership to prioritize security roadmap items, balancing feature velocity with the security posture of the platform.
• Mentor senior and junior engineers, setting technical direction for security standards and establishing best practices across the engineering organization.

Minimum Qualifications

• Bachelor’s or Master’s degree in Computer Science, Computer Engineering, or equivalent experience.
• 8+ years of industry experience in security engineering, with a proven track record of operating at a Staff (E6) level or equivalent.
• Extensive experience as a security generalist, capable of navigating infrastructure, application, and cryptographic security domains.
• Strong proficiency in building, deploying, and managing automated security tooling; demonstrated history of using AI/ML or advanced static/dynamic analysis to improve security outcomes at scale.
• Deep expertise in collaborating with engineering teams during the design phase to proactively identify and mitigate high-risk design flaws.
• Excellent communication skills, with the ability to influence technical direction and lead cross-functional security initiatives.

Preferred Qualifications

• Technical understanding of decentralized storage, distributed systems, or the Web3 stack (prior experience is a plus, not a requirement).
• Experience leading security-focused transformations or implementing security-by-design frameworks in high-growth engineering environments.
• Ability to balance tactical, hands‑on security work with strategic long-term planning and leadership.

Employment is contingent upon the successful completion of a background check, which may include verification of employment history, education credentials, criminal history, and other relevant information.

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