Staff Software Engineer (£130k + Equity) at Series B legaltech scale-up backed by Microsoft & Google in London

Staff Software Engineer (£130k + Equity) at Series B legaltech scale-up backed by Microsoft & Google in London

London Full-Time 130000 - 130000 £ / year (est.) Home office (partial)
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At a Glance

  • Tasks: Architect and build AI-powered tools for elite law firms, driving technical decisions.
  • Company: Join a Series B legaltech scale-up backed by Microsoft and Google.
  • Benefits: Earn up to £130k plus equity, with a generous learning budget and hybrid flexibility.
  • Other info: Enjoy a dynamic environment with significant career growth opportunities.
  • Why this job: Make a real impact on a category-defining product used by prestigious firms.
  • Qualifications: Deep full-stack expertise in Python, TypeScript, or C#/.NET with leadership experience.

The predicted salary is between 130000 - 130000 £ per year.

Salary: Up to £130k + Bonus + Equity

Company Description: Series B legaltech scale-up backed by Microsoft, Google, and Octopus Ventures

Job Description: As the highest-level individual contributor, you will architect AI-powered tools transforming legal document review for elite firms like Barclays and A&O Shearman. You will drive end-to-end technical decisions across a Python, TypeScript, and .NET stack, scaling high-throughput data pipelines and mentoring a high-performing engineering team in a hands-on capacity.

Location: London, UK

Why this role is remarkable:

  • Impact a category-defining product backed by heavyweights like Microsoft and Google, currently used by the world's most prestigious law firms.
  • Rare opportunity to lead as a Staff IC, shaping architectural direction and technical culture without the requirements of people management.
  • Join a high-growth Series B environment offering significant equity, hybrid flexibility, and a generous £750 annual learning and development budget.

What You Will Do:

  • Architect and build scalable full-stack systems, from React-based frontends to complex backend data pipelines for document processing.
  • Lead technical design discussions and build consensus on architectural patterns to ensure reliability across distributed services.
  • Write and ship production code daily, maintaining a high bar for engineering excellence through rigorous code reviews and mentorship.

The ideal candidate:

  • Deep full-stack expertise with architectural opinions on React frontend and backend systems using Python, TypeScript, or C#/.NET.
  • Proven track record of technical leadership as a Senior or Staff IC, ideally within document-heavy domains or AI-powered products.
  • Strong fundamentals in distributed systems and high-throughput data processing, with the ability to proactively address technical debt and scalability risks.

Staff Software Engineer (£130k + Equity) at Series B legaltech scale-up backed by Microsoft & Google in London employer: Jack & Jill

Join a dynamic Series B legaltech scale-up in London, backed by industry giants like Microsoft and Google, where you can make a significant impact on cutting-edge AI-powered tools used by elite law firms. Enjoy a collaborative work culture that prioritises innovation and personal growth, with generous benefits including equity, hybrid working options, and a £750 annual budget for learning and development, making it an exceptional place for talented engineers to thrive.

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Contact Details:

Jack & Jill Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Staff Software Engineer (£130k + Equity) at Series B legaltech scale-up backed by Microsoft & Google in London

Join Local Tech Meetups

Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Jack & Jill or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!

Contribute to Open Source Projects

Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Jack & Jill.

Tap into Online Developer Communities

Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Jack & Jill.

Explore Job Boards Specifically for Tech Roles

Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Jack & Jill that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!

We think you need these skills to ace Staff Software Engineer (£130k + Equity) at Series B legaltech scale-up backed by Microsoft & Google in London

Python
TypeScript
.NET
React
Architectural Design
Technical Leadership
Distributed Systems

Some tips for your application 🫡

Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.

Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Jack & Jill.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Jack & Jill and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!

Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!

How to prepare for a job interview at Jack & Jill

Brush Up on Your Coding Skills

For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.

Know Your Tools and Frameworks

Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Jack & Jill uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.

Showcase Your Projects

Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.

Prepare for Behavioural Questions

While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.