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- Tasks: Design and build sophisticated React applications for legal professionals worldwide.
- Company: Join a dynamic tech company with a focus on innovation and collaboration.
- Benefits: Enjoy competitive salary, equity, remote work options, and generous holiday allowance.
- Why this job: Shape the future of tech while mentoring others and tackling exciting challenges.
- Qualifications: 4+ years in React development and strong collaboration skills required.
- Other info: Experience excellent career growth in a supportive hybrid working environment.
The predicted salary is between 36000 - 60000 £ per year.
Location: London
Employment Type: Full time
Location Type: Hybrid
Department: Technology
About the role
We are looking for a Senior Engineer with strong technical depth and a passion for building exceptional user experiences. You will 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 will 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 will 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 will 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 will 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
Senior Software Engineer in London employer: Cornerstone VC
Contact Detail:
Cornerstone VC Recruiting Team
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 companies you're interested in. A friendly chat can lead to referrals, which can give you a leg up in the hiring process.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your best React projects and any integrations with Microsoft Office products. This not only highlights your technical prowess but also gives potential employers a taste of what you can bring to the table.
✨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 the more you practise, the better you'll perform!
✨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 your genuine interest in joining our team at StudySmarter!
We think you need these skills to ace Senior Software Engineer in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV reflects the skills and experiences that match the Senior Software Engineer role. Highlight your experience with React, TypeScript, and any relevant projects that showcase your ability to build user-focused applications.
Craft a Compelling Cover Letter: Use your cover letter to tell us why you're passionate about building exceptional user experiences. Share specific examples of how you've collaborated with product and design teams in the past, and how you can contribute to our tech stack evolution.
Showcase Your Technical Skills: In your application, don't shy away from detailing your technical expertise. Mention your experience with Microsoft Office integrations, performance optimisation techniques, and any familiarity with AI tools that could enhance your coding practices.
Apply Through Our Website: We encourage you to apply directly through our website for the best chance of getting noticed. It helps us keep track of your application and ensures you’re considered for this exciting opportunity at StudySmarter!
How to prepare for a job interview at Cornerstone VC
✨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, as this will likely come up during technical discussions.
✨Showcase Your Problem-Solving Skills
Be prepared to discuss complex technical challenges you've faced in the past. Think of specific examples where you’ve implemented performance optimisations or automated workflows, as these experiences will demonstrate your ability to troubleshoot and improve processes.
✨Collaboration is Key
Since the role involves working closely with product and design teams, be ready to talk about your experience collaborating with cross-functional teams. Highlight any mentoring roles you've taken on, as this shows your leadership potential and commitment to team success.
✨Prepare Questions
Have a few thoughtful questions ready for your interviewers. This could be about their tech stack evolution, team dynamics, or how they approach user experience design. Asking insightful questions not only shows your interest but also helps you gauge if the company is the right fit for you.
