Ethereum/ZK Protocol Engineer

München, Bavaria, Germany / San Francisco — Protocol

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About the Company

Worldcoin is a new, collectively owned global currency that will be distributed fairly to as many people as possible. Worldcoin will launch by giving a free share to everyone on Earth. We believe that this is an essential step to accelerate the transition towards a more inclusive global economy, providing new ways for everyone to share future prosperity. We hope you’ll join us on our ambitious journey.

Ethereum/ZK Protocol Engineer Job Description

The Ethereum/ZK Protocol Engineer will provide Ethereum and Zero-Knowledge (zk) subject-matter expertise supporting the Protocol team’s projects and initiatives. This role is a technical position requiring a strong understanding of the Ethereum network and related ecosystem, zero-knowledge concepts and applications as well as a solid understanding of blockchain and cryptocurrency technology interrelationships. 

What You'll Do:

  • Technical Currency: Maintain currency on the latest Ethereum, EVM, and related technological advancements in support of the Protocol team’s projects, including the broader Ethereum ecosystem. 
  • Ethereum and EVM Expertise: Champion the forefront of Ethereum and EVM advancements, ensuring Worldcoin leads in innovative blockchain technology through active engagement with the latest industry trends and contributions to the Ethereum ecosystem. 
  • Guide the Future: Shape the future with Ethereum and ZK-based solutions that align with our mission of advancing privacy and blockchain technology.
  • Collaborate and Inspire: Join forces with a team of experts in a vibrant, supportive environment. Your work will not only align with but actively shape industry best practices.
  • Lead with Excellence: Regularly enhance our protocols, ensuring they meet Ethereum and related protocol security and privacy standards.
  • Transparent Communication: Effectively communicate progress, issues, and relevant information to key stakeholders and management, fostering a culture of transparency and accountability.

Who You Are:

  • Advanced Analytical Skills: Exhibit exceptional prowess in analytical thinking and problem-solving, adeptly navigating the complexities of Ethereum-based blockchain, cryptocurrency technologies, and zero-knowledge applications with precision and insight.
  • Communication Excellence: Possess strong written and verbal communication skills to convey intricate technical concepts to diverse audiences.
  • Risk Management: Identify and balance benefits and risks when developing new technological features and functionality in an ambiguous and complex environment. Applying a nuanced understanding of the intricate and often ambiguous nature of the blockchain technology landscape.
  • Collaborative Spirit: Showcase teamwork and collaboration skills, working seamlessly in cross-functional and globally dispersed teams.
  • Technical Proficiency: Demonstrate a strong knowledge and understanding of software development and design principles, concepts, and tools. Utilizing a broad spectrum of concepts and tools to drive innovation and excellence in technology development and implementation.


  • Possess a Bachelor's or Master's degree in Computer Science, Information Technology, or a closely related discipline, ensuring a solid theoretical foundation in key technological areas.
  • Demonstrated experience with Ethereum-based and zero knowledge-based technologies, including smart contracts, EVMs, rollups, and related cryptographic systems showcasing a deep understanding and practical skills in these areas.
  • Experience writing and debugging source code in related programming languages (e.g., Go, Rust, Solidity).

Key Attributes:

  • Adaptability: Embrace change and adapt to evolving privacy regulations and technologies.
  • Ethical Commitment: Demonstrate a strong commitment to ethical behavior and confidentiality.
  • Detail-Oriented: Pay meticulous attention to detail, ensuring thorough privacy assessments and implementations.
  • Proactive Mindset: Take the initiative to identify potential privacy risks and recommend proactive measures.
  • Continuous Learner: Stay updated on emerging privacy trends, technologies, and regulations.
  • Effective Communicator: Convey complex privacy concepts to both technical and non-technical audiences.

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 

Join us in redefining privacy standards and be a part of a team that values innovation, collaboration, and a commitment to privacy excellence. Apply now and embark on a rewarding journey with Tools for Humanity.

Note: This position is based in either our Munich or San Francisco office.

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 (for CA and NY based roles):

The reasonably estimated salary for this role at TFH ranges from $176,000 - $270,000, plus a competitive long term incentive package. 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, a 401(k) plan and match, life insurance, flexible time off, commuter benefits, professional development stipend and much more!

Worldcoin participates in the E-Verify Program

Worldcoin is an Equal Opportunity / Affirmative Action employer committed to diversity in the workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, age, national origin, disability, protected veteran status, gender identity or any other factor protected by applicable federal, state or local laws. Worldcoin is also committed to working with and providing reasonable accommodations to individuals with disabilities. Please let your recruiter know if you need an accommodation at any point during the interview process.

Worldcoin is also committed to working with and providing reasonable accommodations to individuals with disabilities. Please let your recruiter know if you need an accommodation at any point during the interview process.

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