Definely
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.
- 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 + bonus
- Share options
- Quarterly team socials & annual company offsite
- We can offer hybrid or remote working for this role
- 1 month “work from anywhere”
- ️ 25 days holiday + bank holidays
- Take your birthday off
- £750 annual learning & development budget