Senior Security Engineer, Blockchain

Who We Are
Founded in 2012 by 3 expert hackers with no investment capital, Trail of Bits is the premier place for security experts to boldly advance security and address technology's newest and most challenging risks. It has helped secure some of the world's most targeted organizations and devices. Our combination of novel research with practical solutions reduces the security risks that our clients face from emerging technologies. Our work helps drive the security industry and the public understanding of the technology underlying our world.
Cybersecurity preparedness is a moving target. Companies like ours are the tip of the spear in the fight against attackers. Our research-based and custom-engineering approach ensures that our client's capabilities are at the forefront of what's available. For companies and technologies that live and die by their security, a proactive, tailored approach is required to keep one step ahead of attackers.
Democratizing security information is essential. As part of our business, we provide ongoing informational support through blogs, whitepapers, newsletters, meetups, and open-source tools. The more the community understands security, the more they'll understand why a company like ours is so unique and valuable.
Role
Trail of Bits seeks a Senior Security Engineer, Blockchain to join our growing team that is shaping the future of blockchain security. We review blockchain code and smart contracts for security vulnerabilities. We provide strategic advice to our customers, helping them to build more robust software in the long term, and to improve their project's maturity. We build custom tools like Slither, Echidna, and Medusa, among the first blockchain security tools used in practice on real code. We provide our engineers with ample opportunity to build and experiment with new tools between project engagements. Join us to make a career-defining contribution.
You will be at the forefront of blockchain security research. You will review blockchain applications for security vulnerabilities using both manual analysis and automated tools. You will leverage your Go/Rust expertise to review blockchain off-chain code or infrastructure, and smart contracts written in such languages.
Other practitioners at Trail of Bits and within the industry will come to rely on your work, and you will make a name for yourself in a nascent discipline.
This position is for a senior engineer, but higher positions, such as Staff or Principal, can also be considered for the right profile.
What You'll Achieve

• Code Review: Work directly with leading teams in the blockchain industry to review their code and help secure their products.
• Problem Solving: Design and implement solutions for difficult engineering and research problems. Provide expert guidance and innovative strategies to address and mitigate security vulnerabilities in client's blockchain implementations.
• Tool Maintenance and Improvement: Collaborate with teammates to maintain and continually improve our existing blockchain security tools using modern software engineering practices. Contribute to the development and enhancement of open-source tools that Trail of Bits has developed, ensuring they remain cutting-edge and effective in the evolving blockchain landscape.
• Research and Innovation: Push the boundaries of the industry through research and tooling, contributing to advancing blockchain security practices. Identify emerging threats and develop proactive solutions to address them, position Trail of Bits as a leader in blockchain security.

What You'll Bring

• Blockchain Security Engineering Experience: Extensive experience as a blockchain security engineer, with a deep understanding of Solidity security and the Ethereum Virtual Machine (EVM), including familiarity with Ethereum Yellow Paper.
• Proficiency in Go and/or Rust. Multiple years working with Go and/or Rust, with in-depth expertise on the languages, their internal and pitfalls, as well as their tooling ecosystem
• Altchains and off-chain Experience: Experience with various blockchain platforms such as Cosmos, Starknet, Substrate, TON, and Solana, and a strong background in reviewing off-chain components and nodes, with a particular emphasis on L1/L2, consensus, VM, and network components.
• Automated Testing Proficiency. Experience working with fuzzers, CodeQL, or Semgrep, including building harness, writing linting rules, and applying the tools on large codebases
• Technical Communication Skills: Excellent written and verbal communication skills, with a strong emphasis on engaging with customers, writing technical blog posts, and delivering presentations to the technical community.

Reporting Manager: Engineering Director, Blockchain
Trail of Bits, Inc. participates in E-Verify, the US federal electronic employment eligibility verification program. Learn more.
Benefits
Benefits, Perks & Wellness
Trail of Bits is our people, not a place. With over 100+ employees working from every time zone across the globe, our remote-first culture is built on autonomy and trust (and backed by smile-worthy benefits) for full-time employees:
Empowered Living:

• Competitive salary complemented by performance-based bonuses.
• Fully company-paid insurance packages, including health, dental, vision, disability, and life.
• A solid 401(k) plan with a 5% match of your base salary.
• 20 days of paid vacation with flexibility for more, adhering to jurisdictional regulations.

Nurturing New Beginnings:

• 4 months of parental leave to cherish the arrival of new family members.
• Our team is global and remote-first. However, if you are interested in moving to NYC, we offer $5,000 in relocation assistance to support your transition.

Work & Life Enrichment:

• $1,000 Working-from-Home stipend to create a comfortable and productive home office.
• Annual $750 Learning & Development stipend for continuous personal and professional growth.
• Company-sponsored all-team celebrations, including travel and accommodation, to foster community and recognize achievements.

Community Impact:

• Philanthropic contribution matching up to $2,000 annually.

Dedication to Diversity, Equity, Inclusion & Belonging (DEIB)
Trail of Bits is a community of innovators, risk-takers, and trailblazers who celebrate individual differences and recognize that unique perspectives make us stronger, smarter, and more successful. We actively seeks applicants who can bring a variety of experiences, perspectives, and backgrounds to the team. We provide equal employment opportunities to all employees and applicants for employment without regard to race, color, ancestry, national origin, gender, sex, pregnancy, pregnancy-related condition, sexual orientation, marital status, religion, age, disability, qualified handicap, gender identity, results of genetic testing, military status, veteran status, or any other characteristic protected by applicable law. Our team values diversity in experience and backgrounds-we do our best work when we create space for different voices and perspectives. Whatever unique experiences or skill sets you bring, we look forward to learning from each other.