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For Companies At a Glance
- Tasks: Design and implement smart contracts for a secure digital asset future.
- Company: Join Project Eleven, a leader in quantum computing and cryptography.
- Benefits: Fully remote role with competitive salary and growth opportunities.
- Why this job: Be at the forefront of post-quantum technology and make a real impact.
- Qualifications: Deep experience in Solidity and smart contract development required.
- Other info: Collaborative environment focused on innovation and diversity.
The predicted salary is between 60000 - 84000 ÂŁ per year.
About Project Eleven
Project Eleven is an applied lab of builders and technologists working at the intersection of quantum computing and cryptography. We build impactful solutions that push the digital-asset ecosystem to a more secure future. Our focus is post-quantum migration: upgrading wallets, identity, and settlement rails to quantum-safe primitives without breaking UX, composability, and developer workflows. Our mission is to future‑prove digital assets and preserve self‑sovereignty in a post‑quantum world. We do that by building the canonical tooling and products teams can adopt: crypto‑agile infrastructure, reference implementations, and integrations that fit real constraints like latency, cost, compatibility, key rotation, and recovery. We work with leading ecosystems to make this migration real through products we build, audits, testnets, and cutting edge research. The vision we have is clear: a proven upgrade path, production‑ready tooling and users retaining control of their assets and identity, before CRQC exists.
The role
We are looking for a Senior Protocol Engineer to join our growing Product Engineering team. As a Protocol Engineer, you will play a pivotal role in helping to build the canonical tools and products to protect digital assets and preserve self‑sovereignty in a post‑quantum world. This role is a full-time, fully remote position in Europe (GMT to GMT+2).
What you will be responsible for:
- Design, implement, and maintain long-lived smart contracts intended for production use and high-value deployments
- Own contract architecture decisions including upgradeability, storage layout, initialization, and lifecycle management
- Identify, mitigate, and document security risks related to smart contracts and on-chain protocol logic
- Prepare contracts for external audits, respond to findings, and implement remediation safely
- Develop comprehensive test suites including unit tests, integration tests, fork testing, and fuzzing
- Manage contract deployments, upgrades, and post-deployment monitoring in live environments
- Collaborate with off-chain engineers to ensure safe and consistent interaction between on-chain and off‑chain systems
- Evaluate and adopt relevant standards and best practices within the smart contract ecosystem
What you bring:
- Deep experience with Solidity development and shipping production contracts
- Strong understanding of proxy patterns, upgrade safety, storage, initialiser patterns, contract lifecycle management
- Excellent knowledge of EVM internals and common vulnerabilities e.g. Reentrancy, storage collisions, signature replays etc
- Demonstrable experience preparing contracts for formal audits
- Familiarity with ERC standards (especially ERC‑20, ERC‑721, ERC‑4337, ERC‑1271)
- Experience deploying and maintaining high-value contracts on mainnet e.g. deployments, proxy upgrades with no downtime, post-deployment monitoring
- Strong testing and debugging e.g. complex integration tests, gas profiling and optimisations, fork testing, fuzzing
- Strong English communication
What we would love to see:
- Experience with ERC‑4337 account abstraction
- Aware of and understanding post‑quantum cryptography
- Experience developing with ZeroDev, Biconomy or Alchemy accounts
- Token Sale / ICO experience i.e. an understanding of vesting schedules, token distribution contracts, TGE mechanics
- Auditor collaboration - Experience working with auditors and running internal pre‑audits
- Experience contributing to Ethereum standards, open‑source crypto projects, AA frameworks or wallets
Equal Opportunity
We are committed to equal employment opportunity and believe that diverse teams build better products. All qualified applicants will receive consideration without regard to any protected characteristic under applicable law.
Senior Protocol Engineer employer: Project Eleven
Contact Detail:
Project Eleven Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Protocol Engineer
✨Tip Number 1
Network like a pro! Reach out to folks in the quantum computing and cryptography space. Attend meetups, webinars, or even online forums. The more connections we make, the better our chances of landing that Senior Protocol Engineer role.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your Solidity projects and smart contracts. We want to see your work in action, so don’t be shy about sharing links or even demo videos when you chat with potential employers.
✨Tip Number 3
Prepare for technical interviews by brushing up on EVM internals and common vulnerabilities. We should practice explaining our thought process on contract architecture decisions and security risks. This will help us stand out during those crucial interview moments.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are proactive and take the initiative to connect directly with us.
We think you need these skills to ace Senior Protocol Engineer
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with Solidity and smart contracts. We want to see how your skills align with our mission at Project Eleven, so don’t be shy about showcasing relevant projects!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Tell us why you’re passionate about post-quantum cryptography and how you can contribute to our team. Keep it engaging and personal – we love to see your personality come through.
Showcase Your Projects: If you've worked on any high-value contract deployments or have experience with audits, make sure to include those details. We’re keen to see real examples of your work that demonstrate your expertise in the field.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it gives you a chance to explore more about what we do!
How to prepare for a job interview at Project Eleven
✨Know Your Smart Contracts
Make sure you brush up on your Solidity skills and understand the intricacies of smart contract architecture. Be ready to discuss your past experiences with contract lifecycle management, upgradeability, and security risks. This will show that you’re not just familiar with the theory but have practical experience too.
✨Showcase Your Problem-Solving Skills
Prepare to discuss specific challenges you've faced in previous projects, especially around vulnerabilities like reentrancy or storage collisions. Highlight how you identified these issues and what steps you took to mitigate them. This demonstrates your ability to think critically and act decisively.
✨Familiarise Yourself with Post-Quantum Concepts
Since the role focuses on post-quantum migration, it’s crucial to have a solid understanding of post-quantum cryptography. Brush up on relevant standards and be prepared to discuss how they can be integrated into existing systems. This will show your forward-thinking approach and alignment with the company’s mission.
✨Communicate Clearly and Confidently
Strong communication is key, especially when collaborating with off-chain engineers. Practice explaining complex technical concepts in simple terms. This will not only help you during the interview but also demonstrate your ability to work effectively within a team.
