At a Glance
- Tasks: Join us to build cutting-edge user interfaces and enhance onchain finance applications.
- Company: Be part of Symbiotic, a pioneering tech company transforming financial infrastructure.
- Benefits: Enjoy competitive pay, flexible work options, and opportunities for professional growth.
- Other info: Collaborate with a dynamic team and shape the future of finance.
- Why this job: Make a real impact in the evolving world of neofinance with innovative technology.
- Qualifications: Expertise in React, TypeScript, and a passion for building accessible components.
The predicted salary is between 59400 - 72600 £ per year.
About Symbiotic
Symbiotic is the infrastructure beneath collateral markets, where capital can secure financial obligations, remain productive, and be enforced by code.
By changing the economics of onchain collateral, Symbiotic enables new categories of neofinance applications that were previously impossible to build - including credit, insurance, RWA liquidity, and more.
As institutional capital increasingly moves onchain, Symbiotic is positioned to become the coordination layer connecting capital and risk across the onchain economy.
Backed by Paradigm, Pantera, Cyber. fund, and Coinbase Ventures, we power 80+ vaults, 74,000+ active stakers, and 111 operators - with Chainlink, Nexus Mutual, and Cap Labs among the teams live in production.
- See how Symbiotic is powering the next generation of onchain finance: symbiotic. fi
- Our People
We’re a tight-knit team of experienced builders working at the forefront of financial infrastructure.
Our backgrounds span high-growth tech start-ups, leading crypto companies, major banks, insurers, and financial institutions.
We work with ownership, a high bar for craft, and the urgency of an early-stage company - in an environment where people are trusted to take initiative and supported to do their best work.
We’re looking for talented professionals to join us at a defining moment, as Symbiotic helps shape the next generation of onchain finance.
- What You’ll Do
- Participate in all phases of frontend development: requirements analysis, architecture and design, implementation, documentation, testing, and delivery.
- Build responsive and accessible user interfaces based on Figma designs.
- Prototype interfaces for testing mvps.
- Develop reusable components and maintain them in Storybook.
- Integrate new features into the existing codebase.
- Implement blockchain and wallet interactions.
- Design efficient approaches to client-side state management, server-state synchronization, caching, and error handling.
- Write unit, integration, and end-to-end tests.
- Monitor production issues and application performance using Sentry.
- Contribute to project estimation, planning, and technical decision-making.
- Review code written by other team members and help maintain engineering standards.
- Communicate effectively with engineers, designers, product stakeholders, and company partners.
Who You Are
- Expert in modern React and Type Script, with strong instincts for component architecture and type-safe design
- Production experience with Next. js, Vite, and pnpm-based monorepos
- Deep understanding of state management — server state (Tan Stack Query), lightweight client state (Zustand or similar), and when to use which
- Strong CSS and responsive design fundamentals; experience with component libraries such as Chakra UI
- Able to turn Figma designs into accessible, reusable components, ideally documented in Storybook
- Solid testing practice across unit, integration, and E2E (Vitest, Playwright), including async and wallet-interaction flows
- Able to optimize performance (code splitting, memoization, bundle analysis, Core Web Vitals) and debug production issues with tools like Sentry
- Security-conscious: CSP, secure wallet interactions, input validation, and safe handling of secrets
- Confident with Git workflows, Docker, and Git Hub CI/CD; basic familiarity with Kubernetes and CDNs
- Nice to have: experience integrating frontends with blockchain networks — wagmi/viem, wallet connection flows, transaction lifecycles, and Web3 UX
- #J-18808-Ljbffr
Senior Front-End Engineer (React) in London employer: Symbiotic
At Symbiotic, we pride ourselves on fostering a dynamic and innovative work culture that empowers our employees to take ownership of their projects. Located in the vibrant Greater London area, we offer competitive benefits, opportunities for professional growth, and a collaborative environment where creativity thrives. Join us to be part of a forward-thinking team that values transparency and encourages you to push the boundaries of design in the exciting world of Web3 finance.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Front-End Engineer (React) in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Symbiotic or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Symbiotic.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Symbiotic.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Symbiotic that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Senior Front-End Engineer (React) in London
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 Symbiotic.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Symbiotic 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 Symbiotic
✨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 Symbiotic 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.
