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- Tasks: Design and build sophisticated React applications for legal professionals worldwide.
- Company: Join Definely, a forward-thinking LegalTech company backed by industry giants.
- Benefits: Competitive salary, share options, remote work, and a £750 learning budget.
- Why this job: Shape the future of legal tech while mentoring others and driving innovation.
- Qualifications: 4+ years in React development and strong collaboration skills required.
- Other info: Dynamic team culture with excellent growth opportunities and quarterly socials.
The predicted salary is between 60000 - 75000 £ per year.
We’re looking for a Senior Engineer with strong technical depth and a passion for building exceptional user experiences. You’ll play a key role in shaping our front-end architecture, collaborating closely with product and design teams, and delivering scalable, performant solutions used by legal professionals worldwide.
As a senior member of the team, you’ll act as a technical expert and a trusted partner helping to guide best practices, influence decisions, and mentor others through collaboration and example.
What you’ll do:
- Design and build sophisticated React applications integrating with Microsoft Word, M365, and other Office products using Office.js.
- Write clean, scalable, and maintainable code while driving performance and reliability.
- Collaborate with product, design, and engineering teams to deliver user-focused, accessible features.
- Contribute to architectural discussions and help shape the evolution of our tech stack.
- Mentor and support team members through knowledge sharing, code reviews, and best practice guidance.
- Troubleshoot complex technical challenges and drive continuous improvement through automation and AI-assisted workflows.
- Maintain high-quality standards with robust testing, documentation, and security practices.
What you’ll bring:
- 4+ years of hands‑on experience building production React applications.
- Familiarity with agentic coding assistants such as Claude Code or similar AI tools.
- Excellent communication and collaboration skills in English.
- Proven ability to work independently while contributing effectively to team goals.
- Experience working successfully in hybrid or remote development environments.
- Solid understanding of React performance optimisation (e.g. memoisation, code splitting, avoiding unnecessary re‑renders).
- Experience with Git, version control best practices, and CI/CD pipelines.
We’ll be lucky if you have:
- Knowledge of Microsoft Office Add‑in guidelines and Office Store submission processes.
- Prior experience in product‑focused or startup environments.
- Exposure to AI‑powered developer tools and automation workflows.
What we offer:
- Competitive salary + bonus
- Share options
- Quarterly team socials & annual company offsite
- Hybrid or remote working for this role
- 1 month “work from anywhere”
- Take your birthday off
- £750 annual learning & development budget
- Enhanced parental leave
- Additional perks: Cycle to Work, Workplace Nursery salary sacrifice scheme, and top‑quality equipment
About Definely
At Definely, we’re on a mission to simplify the way legal professionals access and understand complex information in legal documents. Trusted by a global community of customers, our LegalTech solutions integrate seamlessly into lawyers’ daily workflows, making it easier to draft, review and navigate even the most complex contracts.
Our products provide instant access to essential information, enabling legal teams to review clauses and provisions in context, reduce risk and work more efficiently – all without disrupting their flow. At Definely, we’re dedicated to solving real challenges faced by legal professionals.
Joining Definely means becoming part of a forward‑thinking, collaborative team that prioritises innovation and people. We create a supportive environment driven by a shared commitment to connection, growth and success.
Recognised in the top 25 of Deloitte’s prestigious UK Technology Fast50 in 2023 and backed by Microsoft, Google and Octopus Ventures, we’re trusted by leading law firms and in‑house legal teams, including A&O Shearman, Dentons, Deloitte, and Barclays, to streamline their workflows and mitigate risks.
Senior Frontend Developer in London employer: Definely
Contact Detail:
Definely Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Frontend Developer in London
✨Tip Number 1
Network like a pro! Reach out to your connections in the industry, attend meetups, and engage in online communities. You never know who might have the inside scoop on job openings or can refer you directly.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your best React projects. This is your chance to demonstrate your technical depth and user experience design abilities. Make sure it’s easy to navigate and highlights your contributions.
✨Tip Number 3
Prepare for those interviews! Brush up on common technical questions related to React and front-end architecture. Practice coding challenges and be ready to discuss your past experiences and how they relate to the role at Definely.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining our team and contributing to our mission.
We think you need these skills to ace Senior Frontend Developer in London
Some tips for your application 🫡
Tailor Your Application: Make sure to customise your CV and cover letter to highlight your experience with React and any relevant projects. We want to see how your skills align with what we’re looking for, so don’t hold back!
Showcase Your Collaboration Skills: Since we value teamwork, share examples of how you’ve worked with product and design teams in the past. This will help us see how you can fit into our collaborative culture.
Highlight Your Technical Expertise: Don’t forget to mention your hands-on experience with performance optimisation and any tools like Git or CI/CD pipelines. We’re keen to know how you tackle technical challenges and drive improvements.
Apply Through Our Website: We encourage you to submit your application directly through our website. It’s the best way for us to receive your details and ensures you’re considered for the role without any hiccups!
How to prepare for a job interview at Definely
✨Know Your Tech Stack
Make sure you’re well-versed in React and the specific technologies mentioned in the job description. Brush up on performance optimisation techniques like memoisation and code splitting, as these will likely come up during technical discussions.
✨Showcase Your Collaboration Skills
Since this role involves working closely with product and design teams, be prepared to discuss your past experiences collaborating with cross-functional teams. Share examples of how you’ve influenced decisions or mentored others, as this will highlight your leadership qualities.
✨Prepare for Architectural Discussions
Think about your approach to front-end architecture and be ready to discuss how you would shape it at Definely. Consider potential challenges and solutions related to integrating with Microsoft Office products, as this will demonstrate your problem-solving skills.
✨Practice Coding Challenges
Expect to tackle some coding challenges during the interview. Practice writing clean, maintainable code and be ready to explain your thought process. Familiarity with AI coding assistants could also give you an edge, so don’t hesitate to mention any relevant tools you’ve used.