--- title: 'Staff Security Engineer, Walrus at Mysten Labs' canonical: 'https://feeny.ai/job/staff-security-engineer-walrus-mysten-labs-united-states-5gb0hr81t0ww' type: 'job' last_seen: '2026-11-07' --- # Staff Security Engineer, Walrus at Mysten Labs - **Company:** Mysten Labs - **Location:** United States - **Employment:** full-time - **Work type:** remote - **Posted:** 2026-08-13 - **Last confirmed live:** 2026-11-07 - **Apply:** https://jobs.ashbyhq.com/mystenlabs/1c64c5ab-eb2c-40a2-a825-22ffb81a9736 ## Job description Mysten Labs’ mission is to advance the internet through step-function improvements in what technology makes possible. We build foundational infrastructure and products that give people, businesses, and developers new ways to interact, transact, and create value. Our work spans on-chain finance and the emerging agent economy. Through Sui, Move, and our broader technology stack, we’re building the systems that make these experiences possible - from secure, scalable blockchain infrastructure to new ways for businesses and AI agents to interact. The Role: We are hiring a Staff Security Engineer to 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. What You'll Do: - 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. What You'll Have: ## 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. ## What You'll Have ## 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. Regarding the recent rash of technology job scams: Be aware that emails from genuine Mysten Labs group recruiters will always come from the @[mystenlabs.com](http://mystenlabs.com) domain or related subdomains (e.g., [mystenlabs.com/careers](http://mystenlabs.com/careers)). Remember: you can always verify positions on our job boards at [www.mystenlabs.com/careers](http://www.mystenlabs.com/careers). To support an efficient and fair hiring process, we may use technology-assisted tools, including artificial intelligence (AI), to help identify and evaluate candidates. All hiring decisions are ultimately made by human reviewers. Our team is remote first and we are hiring across the world. Here at Mysten Labs, you’ll be joining a world-class team with tremendous growth potential as we bring the next billion users to web3. We raised a $300M Series B round from top Silicon Valley led venture funds like Jump Crypto, Andreessen Horowitz (a16z), Binance Labs, Redpoint, Lightspeed, Coinbase Ventures, Electric Capital, Standard Crypto, NFX, Slow Ventures, Scribble Ventures, Samsung Next, Lux Capital, among other investment firms and strategic partners. Come join us and build the future of web3! ## About Mysten Labs ## Company Overview - **One-liner**: Mysten Labs builds foundational infrastructure for a decentralized internet, including the Sui blockchain, Move programming language, and related protocols. - **Entity Type**: Private (Series B) - **Headquarters**: United States (remote-first with offices in Greece, Switzerland, UK, South Korea, Japan, and more) - **Founded**: 2021 - **Founders**: Evan Cheng (Co-Founder & CEO), Sam Blackshear (Co-Founder & CTO), Adeniyi Abiodun (Co-Founder & CPO), Kostas Chalkias (Co-Founder & Chief Cryptographer), George Danezis (Co-Founder & Chief Scientist) ## Core Business - **Primary industry**: Blockchain / Decentralized Web Infrastructure - **Target customers**: Builders, web3 enthusiasts, enterprises, and developers of decentralized applications (B2B, B2D) - **Mission or purpose statement**: "To lay the foundations for a decentralized web stack suitable for mass adoption" – unlocking everything that web3 enables. ## Products & Services - **[Sui](https://mystenlabs.com/)**: A high-performance Layer-1 blockchain and smart contract platform designed for global adoption, delivering the benefits of web3 with the ease of web2. (Infrastructure / Blockchain) - **[Move](https://mystenlabs.com/)**: The native programming language for Sui, focused on safety, composability, and extensibility for building smart contracts. (Programming Language) - **[Walrus](https://mystenlabs.com/)**: A decentralized storage and data availability protocol. (Storage / Protocol) - **[DeepBook](https://mystenlabs.com/)**: An efficient DeFi foundation that unlocks financial innovation on Sui. (DeFi / Order Book) - **[Seal](https://mystenlabs.com/)**: Robust encryption & onchain access control for sensitive data. (Security / Privacy) - **[Enoki](https://mystenlabs.com/)**: infrastructure for seamless customer experiences (mentioned in context of transforming business with meaningful customer experiences). (Developer Tools / UX) - **[Kiosk](https://mystenlabs.com/)**: A decentralized system for commerce applications on Sui. (Commerce) ## Market Standing - **Valuation/Market Cap**: Not publicly disclosed. - **Key Metric**: Total Funding – **$336 million** (as of September 2022 Series B; includes $300M Series B, $36M Series A, and ~$11K venture round). - **Notable Investors/Partners**: Andreessen Horowitz (led Series A), FTX Ventures, and 19 investors in Series B; also partnered with Qualco and xMoney (strategic alliance, May 2026). Sui processed over $1 trillion in stablecoin volume as of May 2026. - **Growth Signals**: Headcount grew **+20.8% year-over-year** (167 employees); operates in 25 countries; acquired Parasol (March 2025); Appointed ex-Goldman Digital Assets leader (May 2025); active hiring across 12+ open positions as of mid-2026. ## Competitive Advantages - **Core Differentiators**: - The **Move programming language** (originally developed at Facebook for Diem/Libra) offers superior safety and composability for smart contracts. - **Sui’s parallel execution** enables high throughput and low latency, aiming to onboard billions of users. - A **comprehensive product stack** (Sui, Walrus, DeepBook, Seal, Enoki, Kiosk) provides end-to-end infrastructure for web3. - **Scientific and engineering rigor** – the founding team includes veterans from distributed systems, cryptography, and compiler/VM research. ## Strategic Focus - **Current priorities**: Achieving mass adoption of web3 through scalable, secure, and user-friendly infrastructure. Key initiatives include zero-fee stablecoins, gaming integrations, and data privacy (Seal mainnet launched September 2025). Building the “agentic web” and interoperability foundations. ## Why Work Here - **Culture**: “Everybody carries the box” – a collaborative, no-silo environment focused on step-change advancements. Values include transparency, integrity, and thinking big. - **Remote/Hybrid**: **Remote-first** company with a global team; offers co-working opportunities, team offsites, and company-wide gatherings to stay connected. - **Interview Process**: Starts with phone interviews (45 min) covering background and interest; followed by virtual team interviews (four 45-min sessions) customized by role (systems design, coding, behavioral). Expect fast feedback (within 1 week). - **Perks**: Not explicitly listed, but emphasis on “talent shouldn’t be limited by geographic location” and a stellar team of veteran innovators. ## Sources 1. [mystenlabs.com](https://www.mystenlabs.com/) 2. [mystenlabs.com/careers](https://www.mystenlabs.com/careers) 3. [mystenlabs.com/about](https://www.mystenlabs.com/about) 4. [linkedin.com/company/mysten-labs](https://www.linkedin.com/company/mysten-labs) 5. 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