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For Companies At a Glance
- Tasks: Design and maintain smart contracts for secure digital assets in a post-quantum world.
- Company: Join Project Eleven, a pioneering lab at the forefront of quantum computing and cryptography.
- Benefits: Fully remote role with competitive salary and opportunities for professional growth.
- Why this job: Make a real impact on the future of digital assets and self-sovereignty.
- Qualifications: Deep experience in Solidity and smart contract development required.
- Other info: Collaborative team environment focused on innovation and cutting-edge research.
The predicted salary is between 36000 - 60000 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
Senior Protocol Engineer in London employer: Project Eleven
Contact Detail:
Project Eleven Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Protocol Engineer in London
✨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 make it easy for potential employers to see what you can bring to the table.
✨Tip Number 3
Prepare for interviews by brushing up on common vulnerabilities and best practices in smart contract development. We need to demonstrate our expertise, so be ready to discuss how you've tackled security risks in past projects.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets noticed. Plus, we love seeing candidates who are genuinely interested in joining our mission to future-proof digital assets.
We think you need these skills to ace Senior Protocol Engineer in London
Some tips for your application 🫡
Tailor Your Application: Make sure to customise your CV and cover letter for the Senior Protocol Engineer role. Highlight your experience with Solidity and smart contracts, and don’t forget to mention any relevant projects that showcase your skills in a post-quantum context.
Showcase Your Technical Skills: We want to see your technical prowess! Include specific examples of your work with EVM internals, contract lifecycle management, and any audits you've prepared for. This is your chance to shine, so don’t hold back!
Be Clear and Concise: When writing your application, keep it clear and to the point. Use straightforward language to explain your experience and how it relates to our mission at Project Eleven. We appreciate clarity and directness!
Apply Through Our Website: Don’t forget to submit your application through our website! It’s the best way for us to receive your details and ensures you’re considered for the role. We can’t wait to see what you bring to the table!
How to prepare for a job interview at Project Eleven
✨Know Your Smart Contracts Inside Out
Make sure you’re well-versed in Solidity and the intricacies of smart contract development. Brush up on proxy patterns, upgrade safety, and lifecycle management. Being able to discuss your past experiences with high-value deployments will show that you’re ready for the challenges this role presents.
✨Prepare for Technical Questions
Expect to dive deep into EVM internals and common vulnerabilities like reentrancy and storage collisions. Practise explaining how you've mitigated these risks in previous projects. This will demonstrate your expertise and problem-solving skills, which are crucial for a Senior Protocol Engineer.
✨Showcase Your Testing Skills
Be ready to talk about your experience with comprehensive test suites, including unit tests and fuzzing. Highlight any specific examples where your testing strategies led to successful contract deployments or audits. This will illustrate your attention to detail and commitment to security.
✨Communicate Clearly and Confidently
Strong English communication is key, especially when collaborating with off-chain engineers. Practise articulating complex concepts in a straightforward manner. This will not only help you during the interview but also in your future role, ensuring smooth interactions within the team.
