Work with purpose.

Career Opportunities in the True Portfolio

Blockchain Security Researcher - Europe



London, UK · Remote
Posted on Saturday, May 18, 2024

About us

Founded in 2015 with the mission to protect the open economy, OpenZeppelin is the world leader in securing blockchain applications and smart contracts.

Its bedrock open source Contract Libraries are a public good and industry standard for smart contract development.

OpenZeppelin’s professional expertise, unified with the Defender developer security platform, integrates through clients’ development lifecycles, so teams can plan, code, audit, deploy and operate projects faster and more safely.

Please note: Always refer to OpenZeppelin's official job page for the most accurate information about our open roles, as we have seen multiple third party job sites posting inaccurate information.

This opening is for a Security Researcher role within the company. If you would like to build and maintain the contracts library, Defender or any of our products, consider the product development openings.

What you'll be doing

  • Review smart contracts for the top decentralized applications before they get launched and present findings and vulnerabilities that the protocol can have to the client.

  • Team up with one or two auditors and review code line by line and try to hack it.

  • Working on proposals to make code easier to understand and use in the future by sharing good practices

  • Conduct open-ended research around cutting edge blockchain technologies.

  • Paid time to conduct research and contribute to OpenZeppelin’s projects and knowledge

You have

  • Hands-on and practical experience in one or more of the following areas: software development, cyber security, mathematics.

  • Experience with public Ethereum or other EVM-based blockchains.

  • Knowledge in the Solidity programming language.

  • Intellectual curiosity and the capability to learn complex topics

  • Above-average attention to detail skills.

  • The ability to work independently, with minimal supervision.

  • An advanced English level and great communication skills (oral and written).

  • Passion about the blockchain space and decentralization.

  • Ability to work collaboratively in a distributed team.

Nice to have

  • Experience in Back-end programming using JavaScript, Python, Golang or Rust

  • Experience performing code reviews.

  • Experience in financial engineering and/or capital markets microstructure


If you don't meet all of the listed requirements, but think you're a good fit for the position, please apply so we can review.


Our interview process takes place on Zoom and tends to consist of the following stages:

  • Recruiter call (45 minutes)

  • Leadership interview (45 minutes)

  • Team member interview (1 hour)

  • Paid work test (lasting up to 10 days)

  • Reference checks

Please let us know if you require any accommodations for the interview process, and we’ll do our best to provide assistance.


  • Company in-person gatherings in different locations around the world 😎
  • Fully remote work 🌎
  • Flexible time off 🏝
  • Paid parental leave for primary or second caregiver 💙
  • One time work-from-home equipment stipend of up to $500 USD 🪑
  • Co-working (up to $250/month) 👩‍💻
  • Medical coverage
  • Annual Learning & Development budget 🧠
  • Referral program
  • Work with a global team in a fast-growing industry 🚀

At OpenZeppelin, we are an equal opportunity employer and we value different perspectives. We are committed to building a diverse workforce. This includes but is not limited to gender, race, sexual orientation, religion, national origin and other characteristics that make each one of us unique. In this uniqueness, we find the most value. Come join us!