At OpenZeppelin, we have built the world’s leading Open Source library for smart contract development.
OpenZeppelin Contracts powers over 3,000 public projects, with over 7,000 stars on Github and maintained by a community of 180+ contributors.
We also conduct security audits for the Ethereum Foundation, Coinbase, and other leading organizations in the space.
With the success of our product, our security audits work, and our educational efforts, we have set industry standards for building secure systems in a fast-growing industry, which presents new programming paradigms.
We are now excited to offer a development platform that will help the growing number of developers working on top of decentralized protocols build the applications that will reach mass adoption.

OpenZeppelin

Browse and apply for open jobs at OpenZeppelin.

developer-relations

OpenZeppelin is a leading provider of open-source tools and services that secure and streamline smart contract development. They offer a comprehensive suite of solutions, including a secure smart contract library, an interactive smart contract generator (Contracts Wizard), and a defender cloud service for monitoring, automating, and upgrading smart contracts. OpenZeppelin's services include smart contract security audits and emergency response teams to address vulnerabilities promptly. Their ecosystem stack accelerates developer onboarding and ensures high security standards are met in decentralized applications. Trusted by major decentralized projects, OpenZeppelin is a standard-bearer in the blockchain space, focusing on security, scalability, and privacy in smart contract and onchain applications development.

At OpenZeppelin, we have built the world’s leading Open Source library for smart contract development. OpenZeppelin Contracts powers over 3,000 public projects, with over 7,000 stars on Github and maintained by a community of 180+ contributors. We also conduct security audits for the Ethereum Foundation, Coinbase, and other leading organizations in the space.

With the success of our product, our security audits work, and our educational efforts, we have set industry standards for building secure systems in a fast-growing industry, which presents new programming paradigms. We are now excited to offer a development platform that will help the growing number of developers working on top of decentralized protocols build the applications that will reach mass adoption.

• Own end-to-end developer adoption for OpenZeppelin's Canton stack, accountable for Contracts Library integrations and Reference Implementation deployments
• Create technical content (tutorials, guides, Daml examples, video walkthroughs) for each milestone release and maintain Canton documentation
• Run quarterly community sessions and provide hands-on coaching at Canton hackathons, conferences, and incubators (2–3 trips/year)
• Supply technical substance for co-marketing with partners like ChainSafe, and track adoption signals (integrations, forks, deployments) to report against program milestones

Senior Developer Relations

Senior Developer Relations managing end-to-end developer adoption for OpenZeppelin's Canton stack. Working closely with the Daml engineering team and the wider Marketing function.

blockchain-engineer

• 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.

Blockchain Security Researcher

Blockchain Security Researcher at OpenZeppelin reviewing smart contracts and conducting cutting-edge research in blockchain technologies. Teaming up with auditors and sharing best practices on code interpretation.

• Own the development of the OpenZeppelin Contracts Library for Daml end-to-end.
• Lead the technical design and implementation of the year-1 Reference Implementations.
• Implement and shepherd the OZ Daml versions of CIP-56, CIP-86, CIP-103, and CIP-104.
• Run client-facing roadmap, design, and milestone discussions.
• Collaborate with OpenZeppelin's auditors and security researchers on threat models.
• Use AI systems as core daily tools.
• Apply AI directly to security work and share what works back to the team.
• Contribute developer-experience and security feedback upstream into the Canton protocol.
• Conduct open-ended research around privacy-preserving DeFi.

Senior Blockchain Security Developer

Senior Blockchain Security Developer for OpenZeppelin, focusing on the Contracts Library for Daml. Leading technical implementation and working with cross-functional teams on DeFi protocols.

frontend-engineer

• Lead the end-to-end CMS migration from HubSpot to Sanity + Next.js, including content modeling, schema architecture, content migration, URL preservation, redirects, and SEO continuity.
• Design and build a comprehensive library of reusable, design-approved components in collaboration with the Brand team, enabling the Marketing team to publish pages autonomously after migration.
• Integrate HubSpot CRM (forms, lead capture, tracking) and GA4 analytics into the new stack so Sales and Marketing keep everything they rely on today.
• Set up the Claude Code + Sanity MCP integration, configure access and permissions, and train the Marketing and Brand teams to operate the website through natural language commands to Claude.
• Implement technical SEO and AIO optimization through schema markup, structured data, Core Web Vitals improvements, and content structures optimized for AI-driven discovery.
• Manage the underlying website infrastructure including CI/CD pipelines, staging environments, hosting (Vercel or similar), and monitoring to ensure reliability and fast iteration cycles.
• Build interactive elements where needed (live stats dashboards, embedded tools, custom landing page experiences) that reflect OpenZeppelin's identity as a leading technology and security company.
• Document architecture, workflows, and team-facing processes thoroughly so OpenZeppelin is genuinely self-sufficient at the end of the engagement.
• Handle ongoing website requests (new pages, bug fixes, integrations) during the engagement period.

Senior Web Developer – Contractor

Senior Web Developer leading a 6-month CMS migration project for OpenZeppelin from HubSpot to Sanity + Next.js. Focusing on technical SEO, content modeling, and component design.

• Own website development and operations by building, maintaining, and optimizing openzeppelin.com and related web properties, ensuring consistent uptime, fast load times, and a seamless user experience.
• Lead and execute the CMS migration from HubSpot to a modern stack (Next.js, Webflow, or similar), managing the phased transition from architecture planning through implementation and deployment.
• Build interactive web experiences including live code playgrounds, dynamic stats dashboards, ROI calculators, and developer tools that set OpenZeppelin apart from competitors.
• Implement technical SEO and AIO optimization through schema markup, structured data, Core Web Vitals improvements, and content structures optimized for AI Overview and generative search engines.
• Manage website infrastructure including CI/CD pipelines, staging environments, CDN configuration, and monitoring to ensure reliability and fast iteration cycles.
• Create conversion-focused assets such as landing pages, lead capture tools, smart CTAs, and engagement widgets to support marketing campaigns and lead generation initiatives.
• Collaborate cross-functionally by working with Design, Product Marketing, DevRel, Demand Generation, and Content teams to translate designs into pixel-perfect implementations and support marketing initiatives with technical execution.

Web Developer

Web Developer responsible for maintaining and evolving OpenZeppelin's online presence. Focused on modern stack implementation and user experience optimization.

backend-engineer

• As a Senior Open Source Developer, you will be part of a new team working on non-EVM open source ecosystems, collaborating with the community to define the development roadmap and design, implement, test, and document the smart contract features and supporting components.
• You will also have the chance to participate and present at community events to share information on OpenZeppelin's work.

Senior Open Source Developer – Rust/Go

Senior Open Source Developer collaborating on non-EVM open source ecosystems for blockchain. Designing, implementing, testing, and documenting smart contract features and participating at community events.

At OpenZeppelin, we have built the world’s leading Open Source library for smart contract development. OpenZeppelin Contracts powers over 3,000 public projects, with over 7,000 stars on Github and maintained by a community of 180+ contributors. We also conduct security audits for the Ethereum Foundation, Coinbase, and other leading organizations in the space. With the success of our product, our security audits work, and our educational efforts, we have set industry standards for building secure systems in a fast-growing industry, which presents new programming paradigms. We are now excited to offer a development platform that will help the growing number of developers working on top of decentralized protocols build the applications that will reach mass adoption.

OpenZeppelin

About the company

Open jobs

6 jobs found

Senior Developer Relations

OpenZeppelin

Blockchain Security Researcher

OpenZeppelin

Senior Blockchain Security Developer

OpenZeppelin

Senior Web Developer – Contractor

OpenZeppelin

Web Developer

OpenZeppelin

Senior Open Source Developer – Rust/Go

OpenZeppelin