About the Company:

Worldcoin (www.worldcoin.org) is an open-source protocol, supported by a global community of developers, individuals, economists and technologists committed to expanding participation in, and access to, the global economy. Its community is united around core beliefs in the inherent worth and equality of every individual, the right to personal privacy, and open and public collaboration. These beliefs are reflected in what the community is building: a public utility to connect everyone to the global economy.

The Worldcoin Foundation (www.worldcoin.foundation) is the protocol’s steward and will support and grow the Worldcoin community until it becomes self-sufficient.  Tools for Humanity (www.toolsforhumanity.com)  is a global hardware and software development company.  It helped launch Worldcoin and continues to provide support to the Foundation, in addition to operating the World App.

About Worldcoin and Worldchain: 

Worldcoin is at the forefront of developing decentralized and privacy-focused technologies for global impact. Worldchain, our underlying blockchain infrastructure, is designed to scale trustlessly and securely, serving billions with innovative privacy-preserving solutions. Our mission extends through the development of scalable, trustless systems that emphasize both privacy and decentralized technology. Join us to be a part of a transformative journey, shaping the future of digital identity and blockchain solutions.

Role Overview:

Senior Rust Engineer – Protocol Team
As a Senior Rust Engineer on the Protocol Team, you play a crucial role in designing and implementing systems that maintain privacy at scale. This position is pivotal in our journey toward creating a privacy-preserving digital identity ecosystem. We are looking for Senior Rust Engineers at varying levels to help drive our innovations and impact on a global scale through the latest in cryptography and blockchain technology.


  • Design, build, and maintain Rust services deployed on Kubernetes clusters.
  • Generate and verify zero-knowledge proofs, interacting with the Ethereum Blockchain and various Layer 2 solutions.
  • Develop features and conduct code reviews in collaboration with the team.
  • Work with smart contracts in Solidity, TypeScript, and Go.
  • Mentor and guide team members, fostering an environment of learning and excellence.

Required Skills:

  • Profound expertise in Rust development in a production environment.
  • Strong foundation in software engineering principles and clean code practices.
  • Experience or strong interest in blockchain, cryptography, or related fields.

Preferred Skills:

  • Familiarity with Ethereum, smart contracts in Solidity, TypeScript, and Go.
  • Experience with zero-knowledge proofs or related cryptographic techniques.
  • Active participation or interest in the Web3 community.

About You:

  • Passionate about privacy, open-source code, and digital identity.
  • Curious and eager to explore new technologies and tackle challenging problems.
  • Committed to crafting high-quality code that aligns with our mission.

What we offer: 

  • An open and collaborative office space in downtown SF 
  • Unlimited PTO  
  • Monthly Phone Reimbursement or a company device
  • Daily DoorDash credit for in-office meals 
  • Top-tier medical, dental, vision insurance 
  • 401k + employer match program 

By submitting your application, you consent to the processing and internal sharing of your CV within the company, in compliance with the GDPR

Pay transparency statement

The reasonably estimated salary for this role at TFH ranges from $170,000 - $250,000, plus a competitive long term incentive package, and may include variable compensation. Actual compensation is based on factors such as the candidate's skills, qualifications, and experience. In addition, TFH offers a wide range of best in class, comprehensive and inclusive employee benefits for this role including healthcare, dental, vision and mental health benefits, a 401(k) plan and match, life insurance, flexible time off, commuter benefits, professional development stipend and much more!

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