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Join our team

Software Engineer - Office.js Framework Applications

We're looking for a software engineer to optimize our product for Microsoft 365 Online

About Definely

Named in the top 25 of the prestigious Deloitte UK Technology Fast50 in 2023, as well as the EMEA Technology Fast 500, Definely is a fast-growing, venture-backed company transforming the $900bn global legal services market.

We are backed by prominent investors and VCs, including Octopus Ventures, The Raine Group, Microsoft, Google for Startups and Nick Jenkins (founder of Moonpig and former Dragon).

Joining Definely is an opportunity to be part of a truly meritocratic, diverse organisation and a chance to work alongside intelligent, highly motivated individuals working together on the same mission!

Working with us

Given that we spend a good portion of our time at our place of work, we are firm believers that everyone should enjoy what they’re doing and who they work with. We operate a transparent workplace culture, where every person has input at every stage and level of strategic decision-making and is a valued member of the team (we promise we are not just saying that)!

We look for natural self-starters who are curious, adaptive, resilient, apply deep logic to their thinking and, most importantly, learn from every mistake!

The role

As a Software Engineer specializing in Office.js framework applications, you will play a pivotal role in designing, developing, and maintaining Definely products that integrate with Microsoft Word including but not limited to Definely Draft, Definely Proof, and Definely Vault. Your primary responsibility will be to build feature-rich, efficient, and user-friendly Definely applications using the Office.js framework.

Key Responsibilities:

  1. Design and Development: Collaborate with cross-functional teams to design and develop Definely products that seamlessly integrate with Microsoft Word using the Office.js framework.
  2. Code Implementation: Write clean, efficient, and maintainable code, adhering to best practices and coding standards.
  3. UI/UX Enhancement: Create intuitive user interfaces and ensure a smooth user experience, keeping user-centric design principles in mind.
  4. Integration: Develop and maintain seamless integration between Microsoft Word and Definely's products, providing advanced functionalities and features.
  5. Testing and Debugging: Conduct rigorous testing and debugging of applications to ensure high-quality, bug-free software.
  6. Documentation: Prepare detailed documentation for code, APIs, and system architecture.
  7. Collaboration: Collaborate with the product management team to understand project requirements and deliver software that meets or exceeds user expectations.
  8. Optimization: Continuously optimize and improve application performance, taking into account memory management and responsiveness.
  9. Security: Implement security measures to protect against potential vulnerabilities and ensure data integrity.

About you

  • Bachelor's degree in Computer Science or a related field (or equivalent work experience).
  • Proven experience in software development, especially in building applications for the Office.js framework.
  • Proficiency in JavaScript, HTML, CSS, and related technologies.
  • Familiarity with Microsoft Office Suite, with a focus on Microsoft Word.
  • Strong problem-solving and debugging skills.
  • Excellent communication and collaboration abilities.
  • Knowledge of software development best practices and design patterns.

Preferred Qualifications:

  • Experience with other Microsoft Office add-ins or apps.
  • Knowledge of additional web technologies, such as React, Angular, or Vue.js.
  • Familiarity with Microsoft Office Add-in guidelines and Office Store submission process.

Most importantly, if you’re someone with a can-do attitude who is willing to get their hands dirty to help us exceed our wildest expectations, then please do not hesitate to apply.

If you’re interested in applying, please send your CV to as well as any additional information about yourself you want to add!