[Hiring] Senior Blockchain Security Developer @OpenZeppelin

Role Description

This role joins us at the start of a 24-month, multi-million-dollar commitment to build the open-source DeFi foundations of the world's most institutional blockchain, approved by the Canton Foundation. The scope includes:

• 8 production-ready Reference Implementations:
  • Privacy-preserving DEX
  • Lending protocol
  • Cross-chain stablecoin settlement
  • Confidential auction launchpad
  • Four more defined in year two
• The OpenZeppelin Contracts Library for Daml:
  • Vaults, hooks, RBAC, credentials, modular multi-sig accounts, standardized messaging gateway, DeFi math, staking, vesting, auctions, and more
• Canton standards implementation:
  • Audited Daml implementations of CIP-56, CIP-86, CIP-103, and CIP-104
• 55 researcher-weeks of dedicated security capacity:
  • Smart-contract audits, full-stack reviews, pen tests
• AI-native developer experience for a new ecosystem:
  • Contracts Wizard, UI Builder, MCP Server, Claude Plugin, AI Skills

You'll work alongside Digital Asset, the Canton Foundation, and ChainSafe. The deliverables become the standard others build on. The work is public; the impact is measurable; the partners are the institutions reshaping how capital moves. Canton is your first focus, but you'll keep contributing across the broader Secure Development portfolio as the work demands.

Within this, you will:

• 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
• Use AI systems as core daily tools
• Apply AI directly to security work
• Contribute developer-experience and security feedback upstream
• Conduct open-ended research around privacy-preserving DeFi

Qualifications

• Production Daml fluency
• 3+ years of experience in UTXO-based protocol development
• 3+ years of experience on DeFi engineering in production
• A security-first mindset
• Library / SDK API design taste
• Cross-chain interoperability exposure
• Institutional / compliance design fluency
• An AI-native workflow
• Experience applying AI to security work
• Fluency in client-facing communication (English)
• Autonomy and proactivity

Requirements

• Cryptography or financial-engineering background (nice to have)
• Institutional finance background (nice to have)
• Hands-on experience with non-EVM ecosystems (nice to have)
• Open-source contributions to widely-used libraries (nice to have)

Benefits

• Company in-person gatherings in different locations around the world
• Fully remote work
• Flexible time off
• Paid parental leave
• One time work-from-home equipment stipend of up to $500 USD
• Medical insurance coverage
• Learning & Development opportunities
• Work with a global team in a fast-growing industry