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- Tasks: Design and build innovative React applications for legal professionals.
- Company: Join Definely, a forward-thinking LegalTech company backed by industry giants.
- Benefits: Enjoy competitive salary, equity, hybrid 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 experience with Microsoft Office integrations.
- Other info: Be part of a dynamic team with excellent career growth opportunities.
The predicted salary is between 36000 - 60000 £ 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.
- Experience integrating with Microsoft Office, especially Office.js and Word add‑ins.
- 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 & annual bonus
- Equity in Definely
- Quarterly team socials & annual company offsite
- Hybrid working (Tues & Thurs in‑office) + 1 month “work from anywhere”
- £750 annual learning & development budget
- Enhanced parental leave
- Additional perks: Cycle to Work, Workplace Nursery salary sacrifice scheme, and top‑quality equipment
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.
Senior Software Engineer employer: Definely
Contact Detail:
Definely Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Software Engineer
✨Tip Number 1
Network like a pro! Reach out to your connections in the industry, attend meetups, and engage with 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, especially those integrating with Microsoft Office. This will give potential employers a taste of what you can do and set you apart from the crowd.
✨Tip Number 3
Prepare for interviews by practising common technical questions and coding challenges. Use platforms like LeetCode or HackerRank to sharpen your skills. Remember, confidence is key, so be ready to discuss your past experiences and how they relate to the role.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets noticed. Plus, it shows you’re genuinely interested in joining our team at Definely. Don’t forget to tailor your application to highlight your relevant experience!
We think you need these skills to ace Senior Software Engineer
Some tips for your application 🫡
Tailor Your Application: Make sure to customise your CV and cover letter for the Senior Software Engineer role. Highlight your experience with React and Microsoft Office integrations, as well as any relevant projects that showcase your skills in building user-focused applications.
Show Off Your Technical Skills: Don’t hold back on showcasing your technical depth! Include specific examples of how you've tackled complex challenges, optimised performance, or mentored team members. This is your chance to shine as a technical expert!
Be Clear and Concise: When writing your application, keep it clear and to the point. Use bullet points where possible to make it easy for us to see your key achievements and skills at a glance. We love a well-structured application!
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 the role. Plus, it shows you’re keen to join our team at Definely!
How to prepare for a job interview at Definely
✨Know Your Tech Stack
Make sure you’re well-versed in React and Office.js, as these are crucial for the role. Brush up on performance optimisation techniques like memoisation and code splitting, and be ready to discuss how you've applied these in past projects.
✨Showcase Collaboration Skills
Since this role involves working closely with product and design teams, prepare examples of how you've successfully collaborated in the past. Highlight your communication skills and any mentoring experiences to demonstrate your ability to guide others.
✨Prepare for Technical Challenges
Expect to troubleshoot complex technical issues during the interview. Think of specific challenges you've faced and how you resolved them, especially those related to building scalable applications or integrating with Microsoft Office products.
✨Understand the Company Culture
Familiarise yourself with Definely’s mission and values. Be ready to discuss how your personal values align with theirs, particularly around innovation and supporting legal professionals. This will show that you're not just a fit for the role, but also for the team.