At a Glance
- Tasks: Architect and develop off-chain services for innovative crypto wallet technology.
- Company: Join Rhinestone, a leader in blockchain tech and user experience.
- Benefits: Startup equity, flexible hours, team meetups, and growth opportunities.
- Other info: Collaborate with top minds in the web3 space and tackle complex challenges.
- Why this job: Make a real impact on the future of digital wallets and blockchain UX.
- Qualifications: 3+ years in blockchain tech and 4+ years in TypeScript development.
The predicted salary is between 70000 - 90000 £ per year.
Rhinestone is building at the bleeding edge of the crypto wallet tech stack. We built the first ERC-4337-compliant Modular Smart Account, the precursor to ERC-7579. This is the dominant technical standard for Smart Accounts, which we lead and use as a foundational layer to permissionless wallet innovation and interop. Our vision is simple: For blockchain technology to revolutionise the digital economy, we require mass adoption, which can only happen with a drastic improvement in user experience (UX). Smart Accounts are the bedrock for solving crypto’s UX challenges, from easy ones like gas abstraction and key recovery to more complex ones like Ethereum’s fragmented liquidity.
Rhinestone provides Smart Account infrastructure and tooling, enabling developers to build powerful onchain products with web2-like UX. Our intent-powered infrastructure allows seamless onchain actions regardless of the chain the user is transacting on. Our open Smart Account module library gives developers maximum flexibility to build the wallet stack they need for their users.
The role involves developing the offchain infrastructure for Omni Account, an intent-powered system that chain abstracts any ERC-7579 Smart Account and smart EOA (EIP-7702). The position will require experience with blockchain systems and building highly performant backend services.
You’ll play a major role in architecting and building the Orchestration Layer for our chain abstraction system. The Orchestration Layer needs to be performant, scalable, and secure, with the ability to process thousands of requests per second whilst seamlessly coordinating solvers, resource locks, claim requests, and security checks. All this complexity needs to be handled while also asking how we ensure we do this in a trustless and censorship-resistant manner.
If you are nerd-sniped by complex problems at the intersection of scalability, UX, and trustlessness, we’d love to speak with you! This is an opportunity for you to leave a mark on the broader ecosystem and become a true domain expert.
Responsibilities
- Architect and design our off-chain services to support feature growth and the rapidly changing requirements of being a startup.
- While your focus will be writing concurrent backend systems, you will also interact with our smart contract systems written in Solidity.
- Work closely with the team to ship new products and develop solutions for challenging technical problems.
- Deliver high-quality code from concept until production.
- Dive into the code of other team members to provide thorough reviews and contributions outside of your own responsibilities.
Relevant experience
- 3+ years of relevant experience with blockchain technology (EVM-focused).
- 4+ years of experience writing TypeScript in a production environment.
- Experience working with crypto wallets (preferably smart accounts), bridging technologies, blockchain nodes, relayer or intent-based systems, and an understanding of Layer 2 solutions and their integration into the application layer.
- Ability to balance shipping quickly with building a stable infrastructure.
- Self-starter, problem-solving from the root cause, able to break down complex problems into simpler components and chart the phases of getting to a stable and scalable solution.
- A hustler mentality: founding a company, working in startups (pre-series A), or building side projects (open source is a plus).
- Able to be a thought leader and highly collaborative to drive toward 10x outcomes.
Our tech stack
- Onchain: Solidity (Foundry)
- Offchain backend: Rust, Node, TypeScript, and various other JS/TS-based frameworks
- Offchain frontend: NextJS, TypeScript, and Tailwind
Location
London, UK
What we offer
- Startup equity
- Opportunity to own complex part of tech stack end-to-end
- Flexible working hours and holidays
- Regular team meetups, offsites, and conferences
- A chance to work with the leading minds in account abstraction and in the broader web3 space
Reach out to kurt@rhinestone.wtf to start the application process. Rhinestone employs a meritocratic mindset when hiring. Regardless of background, gender identity, age, religion, etc., we assess candidates by their ability to contribute, collaborate, and deliver excellent work.
Senior Backend Engineer employer: Rhinestone
Rhinestone is an exceptional employer for Senior Backend Engineers, offering a unique opportunity to work at the forefront of crypto wallet technology in London. With a flexible work culture, startup equity, and regular team meetups, employees are encouraged to innovate and grow within a collaborative environment that values meritocracy and diverse perspectives. Join us to tackle complex challenges and make a significant impact on the future of digital finance.
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We think this is how you could land Senior Backend Engineer
✨Join Local Tech Meetups
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✨Contribute to Open Source Projects
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We think you need these skills to ace Senior Backend Engineer
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Rhinestone.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Rhinestone and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Rhinestone
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Rhinestone uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
