At a Glance
- Tasks: Design and build sophisticated React applications for legal professionals worldwide.
- Company: Join Definely, a forward-thinking LegalTech company backed by Microsoft and Google.
- Benefits: Enjoy competitive salary, equity, hybrid work, and a £750 learning budget.
- Other info: Be part of a dynamic team with excellent career growth opportunities.
- Why this job: Shape the future of legal tech while mentoring others and driving innovation.
- Qualifications: 4+ years in React, strong coding skills, and experience with Microsoft Office integrations.
The predicted salary is between 60000 - 80000 € per year.
Location: London
Employment Type: Full time
Location Type: Hybrid
Department: Technology
About the role
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.
- Strong proficiency in React, TypeScript, JavaScript, HTML, CSS, and modern web technologies.
- 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.
- Experience optimising in-browser text editors for speed and responsiveness.
- 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”
- 25 days holiday + bank holidays
- £750 annual learning & development budget
- Private healthcare (incl. dental & optical)
- 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 Software Engineer in London employer: Dangote Industries Limited
At Definely, we pride ourselves on being an exceptional employer that fosters a collaborative and innovative work culture. Our hybrid working model allows for flexibility while maintaining strong team connections through regular socials and an annual offsite. With a commitment to employee growth, we offer a generous learning and development budget, private healthcare, and unique perks like a Cycle to Work scheme, making us an attractive choice for those seeking meaningful and rewarding employment in the heart of London.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Engineer in London
✨Tip Number 1
Network like a pro! Reach out to your connections in the tech industry, especially those who work at Definely or similar companies. A friendly chat can lead to valuable insights and even referrals that might just land you an interview.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your best React projects, especially any integrations with Microsoft Office products. This will not only demonstrate your technical prowess but also your passion for building exceptional user experiences.
✨Tip Number 3
Prepare for the interview by brushing up on your knowledge of performance optimisation techniques in React. Be ready to discuss how you've tackled complex technical challenges in the past and how you can contribute to our team’s success.
✨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, it shows you’re genuinely interested in joining our innovative team at Definely.
We think you need these skills to ace Senior Software Engineer in London
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, TypeScript, and any relevant projects that showcase your skills in building user-focused applications.
Showcase Your Collaboration Skills:Since we value teamwork, emphasise your ability to work closely with product and design teams. Share examples of how you've collaborated in the past to deliver exceptional user experiences.
Highlight Your Technical Expertise:Don’t forget to mention your hands-on experience with Microsoft Office integrations and any familiarity with AI tools. This will show us that you’re not just a coder but a tech-savvy problem solver.
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 don’t miss out on any updates regarding your application.
How to prepare for a job interview at Dangote Industries Limited
✨Know Your Tech Stack
Make sure you’re well-versed in React, TypeScript, and the other technologies mentioned in the job description. Brush up on your knowledge of integrating with Microsoft Office products, especially Office.js. Being able to discuss your experience with these tools will show that you're a strong fit for the role.
✨Showcase Your Problem-Solving Skills
Prepare to discuss specific technical challenges you've faced in previous roles and how you overcame them. Highlight your experience with performance optimisation techniques in React, as well as any automation or AI-assisted workflows you've implemented. This will demonstrate your ability to troubleshoot and drive continuous improvement.
✨Emphasise Collaboration
Since this role involves working closely with product and design teams, be ready to share examples of how you've successfully collaborated in the past. Talk about your mentoring experiences and how you've contributed to team goals, as this will showcase your ability to work effectively in a hybrid environment.
✨Prepare Questions
Have a few thoughtful questions ready to ask at the end of your interview. Inquire about the team dynamics, the tech stack evolution, or how they approach user experience design. This shows your genuine interest in the company and the role, and it gives you a chance to assess if it's the right fit for you.
