Staff Engineer in London

Staff Engineer in London

London Full-Time 36000 - 60000 ÂŁ / year (est.) Home office (partial)
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At a Glance

  • Tasks: Lead a team of React developers and create innovative legal tech solutions.
  • Company: Join Definely, a forward-thinking LegalTech company backed by industry giants.
  • Benefits: Enjoy competitive salary, equity, hybrid work, and generous holiday allowance.
  • Why this job: Shape the future of legal technology while mentoring a talented team.
  • Qualifications: 5+ years in React development with strong leadership skills.
  • Other info: Be part of a dynamic team with excellent growth opportunities.

The predicted salary is between 36000 - 60000 ÂŁ per year.

Join to apply for the Staff React Engineer role at Definely. Following our recent $30M Series B funding, we are expanding the team to accelerate development of our legal technology products integrating with Microsoft products through Office.js.

About the Role

We are looking for a Staff Engineer to guide two mid‐senior React developers, providing architectural guidance and technical direction. You will shape product direction and product triad.

What you'll do

  • Team Leadership & Mentorship – Lead and inspire a team of React developers, foster collaboration, mentor, promote best practices, maintain high code quality.
  • Technical Excellence – Architect and develop sophisticated React applications integrated with Microsoft Word, M365, Word Online using Office.js, write clean, efficient code, drive scalable solutions, think outside of OfficeJS limitations.
  • Product Development – Collaborate with cross‐functional teams to deliver innovative features, create exceptional UIs prioritising UX and accessibility, optimise performance.
  • Quality & Documentation – Establish testing, debugging processes, maintain documentation, implement security best practices.
  • Problem Solving & Innovation – Troubleshoot complex challenges, contribute to architectural discussions, improve developer productivity via tooling and AI.

What you'll bring

  • Minimum 5 years of product‐focused React development experience.
  • Proven leadership in software development teams.
  • Expert proficiency in React, TypeScript, JavaScript, HTML, CSS.
  • Strong experience with Microsoft Office integration (Office.js, Word add‐ins).
  • Experience with agentic coding assistants such as Claude Code.
  • Excellent English communication skills.
  • Demonstrated ability to work autonomously with clear direction to others.
  • Extensive experience in remote environments.
  • Passion for knowledge sharing and team growth.
  • Optimisation skills for React (memoisation, code splitting, etc.).
  • Strong grasp of Git, CI/CD pipelines.
  • Excellent problem‐solving, collaboration, and communication skills.
  • Ability to work effectively in a fast‐paced, agile environment.

We'll be lucky if you have

  • Knowledge of Microsoft Office Add‐in guidelines and Office Store submission processes.
  • Background in LegalTech or professional services software.
  • Experience with in‐browser text editors and performance optimisation.
  • Experience in product‐focused or startup environments.
  • Exposure to AI‐powered developer tools and 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
  • ÂŁ750 annual learning & development budget
  • Private healthcare (incl. dental & optical)
  • Enhanced parental leave
  • Additional perks: Cycle to Work, Workplace Nursery salary sacrifice scheme, top‐quality equipment

About Definely

At Definely, we simplify how legal professionals access and understand complex information in legal documents. Trusted by a global community, our LegalTech solutions integrate seamlessly into lawyers' daily workflows, making drafting, reviewing, and navigating contracts faster and safer. Joining Definely means being part of a forward‐thinking, collaborative team that prioritises innovation and people. We support growth and success for our team and customers. Recognised in the top 25 of Deloitte's prestigious UK Technology Fast50 in 2023 and backed by Microsoft, Google, and Octopus Ventures, we are trusted by leading law firms and in‐house legal teams worldwide.

Staff Engineer in London employer: Definely

Definely is an exceptional employer that fosters a collaborative and innovative work culture, prioritising the growth and success of its team members. With competitive salaries, equity options, and a generous learning budget, employees are encouraged to develop their skills while enjoying a hybrid working model and additional perks like private healthcare and enhanced parental leave. Joining Definely means being part of a forward-thinking team that is recognised for its contributions to the LegalTech industry and supported by major players like Microsoft and Google.
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Contact Detail:

Definely Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Staff 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.

✨Tip Number 2

Show off your skills! Create a portfolio showcasing your best React projects, especially any that involve Microsoft Office integration. This will give you an edge and demonstrate your technical excellence.

✨Tip Number 3

Prepare for the interview by brushing up on your leadership and mentorship experiences. Be ready to share how you've guided teams in the past and how you can inspire others at Definely.

✨Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets noticed. Plus, it shows you’re genuinely interested in joining the team at Definely.

We think you need these skills to ace Staff Engineer in London

React
TypeScript
JavaScript
HTML
CSS
Office.js
Microsoft Word Integration
Team Leadership
Mentorship
Architectural Guidance
Problem Solving
Performance Optimisation
Git
CI/CD Pipelines
Excellent Communication Skills

Some tips for your application 🫡

Show Off Your React Skills: Make sure to highlight your experience with React and any projects you've worked on that showcase your technical excellence. We want to see how you've tackled challenges and delivered innovative solutions in your past roles.

Leadership Experience Matters: Since we're looking for someone to guide a team, share examples of your leadership and mentorship experiences. Tell us how you've inspired others and promoted best practices in your previous positions.

Tailor Your Application: Take the time to customise your application to reflect the specific requirements of the Staff Engineer role. Mention your experience with Microsoft Office integration and any relevant tools or technologies that align with our needs.

Apply Through Our Website: We encourage you to apply directly through our website for a smoother process. It helps us keep track of applications and ensures you don’t miss out on any important updates from us!

How to prepare for a job interview at Definely

✨Know Your Tech Inside Out

Make sure you brush up on your React, TypeScript, and Office.js skills. Be ready to discuss how you've used these technologies in past projects, especially in integrating with Microsoft products. This will show that you’re not just familiar with the tech but can also apply it effectively.

✨Showcase Your Leadership Skills

Since this role involves guiding mid-senior developers, be prepared to share examples of how you've led teams in the past. Talk about your mentoring style and how you promote best practices within your team. This will demonstrate your capability to inspire and lead others.

✨Prepare for Problem-Solving Questions

Expect to face some tricky problem-solving scenarios during the interview. Think about challenges you've encountered in previous roles and how you overcame them. Highlight your innovative thinking and how you’ve contributed to architectural discussions in the past.

✨Emphasise Collaboration and Communication

This role requires working closely with cross-functional teams, so be ready to discuss how you’ve successfully collaborated with others. Share specific examples of how you’ve communicated complex ideas clearly and effectively, especially in remote environments.

Staff Engineer in London
Definely
Location: London
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  • Staff Engineer in London

    London
    Full-Time
    36000 - 60000 ÂŁ / year (est.)
  • D

    Definely

    50-100
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