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- Tasks: Develop user-friendly blockchain applications focusing on security and usability.
- 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 in securing digital assets for a post-quantum future.
- Qualifications: Strong skills in Typescript, modern frontend engineering, and a passion for user experience.
- Other info: Collaborate with top engineers in a dynamic, innovative environment.
The predicted salary is between 48000 - 84000 £ 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-proof 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’re looking for a Senior Web3 Engineer to join our growing Product Engineering team. As a Web3 Engineer, you’ll 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’ll be responsible for:
- Own the development of user-facing blockchain applications with a strong focus on security, usability, and reliability.
- Design and implement high-quality user interfaces for interacting with blockchain wallets and transaction flows.
- Integrate frontend applications with security-critical core libraries without re-implementing sensitive logic.
- Ensure safe handling of user inputs, permissions, error states, and edge cases in blockchain interactions.
- Collaborate closely with backend, protocol, and security engineers to align UX with system constraints and guarantees.
- Build and maintain scalable component architectures and frontend state management solutions.
- Ensure applications meet high standards for performance, accessibility, and cross-platform compatibility.
- Participate in usability testing and iterate on designs based on user feedback and security considerations.
What you bring:
- Strong proficiency in Typescript and modern frontend engineering (e.g. React or similar).
- Production experience building and publishing browser extensions.
- Strong understanding of EVM/Web3 fundamentals e.g. wallet architecture, JSON-RPC, signature flows, integration with smart contracts.
- Security-minded with experience working with security-sensitive code e.g. key handling, signing flows, storage, encryption.
- Key experience consuming security-critical libraries.
- Demonstrated ability to deliver high-fidelity UI/UX.
- Strong design skills and attention to detail.
- Experience designing component libraries and UX flows.
- Obsession with customer experience and usability testing.
- High ownership and comfortable owning features end-to-end i.e. requirements → UI prototypes → Implementation → QA.
- Strong English communication.
What we’d love to see:
- Experience with mobile development e.g. React Native, iOS development.
- Experience with ERC-4337.
Senior Web3 Engineer in London employer: Project Eleven
Contact Detail:
Project Eleven Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Web3 Engineer in London
✨Tip Number 1
Network like a pro! Reach out to folks in the Web3 space on LinkedIn or Twitter. Join relevant groups and communities where you can connect with potential employers and other engineers. Remember, sometimes it’s not just what you know, but who you know!
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your projects, especially those related to blockchain and security. If you’ve built any tools or applications, make sure they’re front and centre. This is your chance to demonstrate your expertise and passion for the field.
✨Tip Number 3
Prepare for technical interviews by brushing up on your coding skills and understanding of EVM/Web3 fundamentals. Practice common interview questions and scenarios that focus on security and usability. We want you to feel confident and ready to impress!
✨Tip Number 4
Don’t forget to 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 about their job search. So, get your application in and let’s build the future together!
We think you need these skills to ace Senior Web3 Engineer in London
Some tips for your application 🫡
Show Your Passion for Web3: When writing your application, let us see your enthusiasm for Web3 and digital assets. Share any personal projects or experiences that highlight your interest in the field, especially those related to security and usability.
Tailor Your CV and Cover Letter: Make sure to customise your CV and cover letter to reflect the specific skills and experiences mentioned in the job description. We want to see how your background aligns with our mission of future-proofing digital assets.
Highlight Your Technical Skills: Don’t hold back on showcasing your technical prowess! Mention your experience with Typescript, React, and any relevant blockchain technologies. We’re keen to know how you’ve tackled security-sensitive code in your past projects.
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 this exciting opportunity to join our team!
How to prepare for a job interview at Project Eleven
✨Know Your Tech Inside Out
Make sure you’re well-versed in Typescript, React, and the EVM/Web3 fundamentals. Brush up on wallet architecture and JSON-RPC as these are crucial for the role. Being able to discuss your past projects and how you’ve tackled security-sensitive code will definitely impress.
✨Showcase Your Design Skills
Prepare to talk about your experience with UI/UX design. Bring examples of high-fidelity interfaces you've built and be ready to discuss your design process. Highlight your attention to detail and how you’ve iterated based on user feedback.
✨Demonstrate Collaboration
This role involves working closely with backend and security engineers, so be prepared to discuss how you’ve collaborated in the past. Share specific examples of how you aligned UX with system constraints and how you handled challenges in team settings.
✨Be Security-Minded
Since the focus is on building secure applications, be ready to discuss your approach to handling user inputs, permissions, and error states. Talk about any experience you have with security-critical libraries and how you ensure safe interactions in blockchain applications.
