Founding Product Engineer (£70K - £120K + Equity) at cubic

Founding Product Engineer

Salary: £70K - £120K + 0.10% - 1.00% Equity

Company Description: cubic - VC-backed AI-native replacement to GitHub

Location: London, UK

Job Description: Join cubic as our first Founding Product Engineer to build the world’s first AI-native code review platform. Working alongside ex-Instagram and Tessian founders, you will own features end-to-end, from ideation to launch. You’ll help redefine how top-tier engineering teams like n8n and Resend collaborate when AI writes the code.

Why this role is remarkable:

  • Exceptional traction with 50% MoM ARR growth and a high-profile customer base including the Linux Foundation, n8n, and Granola.
  • Elite backing from Y-Combinator (X25) and top builders like PeakXV (Sequoia India), Vercel Ventures, and the founders of Resend and v0.
  • Opportunity to shape a new product category alongside a team of four repeat founders in a high-velocity, high-autonomy environment.

What you will do:

  • Architect and build core product features using a modern stack including Next.js, React, Prisma, Inngest, and the Vercel AI SDK.
  • Own the entire product lifecycle from initial user research and prototyping to production deployment and rapid iteration.
  • Collaborate directly with the founders to define the technical roadmap and the future of AI-native developer tools.

The ideal candidate:

  • At least 6 years of professional software engineering experience with a track record of building and shipping end-to-end products.
  • Deep technical proficiency in the React/Next.js ecosystem and a passion for crafting high-quality user experiences and product outcomes.
  • Proven self-starter mentality evidenced by significant side projects, open-source contributions, or previous experience in early-stage startups.

Next steps:

  1. Visit our website.
  2. Click 'Talk to Jack'.
  3. Talk to Jack so he can understand your experience and ambitions.
  4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.
  5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction.
  6. If not, Jack will find you excellent alternatives. All for free.
#J-18808-Ljbffr Salary: GBP 60000 - 100000 per year
Back to blog

Other Jobs To Apply

No other job posts for this day.

Common Interview Questions And Answers

1. HOW DO YOU PLAN YOUR DAY?

This is what this question poses: When do you focus and start working seriously? What are the hours you work optimally? Are you a night owl? A morning bird? Remote teams can be made up of people working on different shifts and around the world, so you won't necessarily be stuck in the 9-5 schedule if it's not for you...

2. HOW DO YOU USE THE DIFFERENT COMMUNICATION TOOLS IN DIFFERENT SITUATIONS?

When you're working on a remote team, there's no way to chat in the hallway between meetings or catch up on the latest project during an office carpool. Therefore, virtual communication will be absolutely essential to get your work done...

3. WHAT IS "WORKING REMOTE" REALLY FOR YOU?

Many people want to work remotely because of the flexibility it allows. You can work anywhere and at any time of the day...

4. WHAT DO YOU NEED IN YOUR PHYSICAL WORKSPACE TO SUCCEED IN YOUR WORK?

With this question, companies are looking to see what equipment they may need to provide you with and to verify how aware you are of what remote working could mean for you physically and logistically...

5. HOW DO YOU PROCESS INFORMATION?

Several years ago, I was working in a team to plan a big event. My supervisor made us all work as a team before the big day. One of our activities has been to find out how each of us processes information...

6. HOW DO YOU MANAGE THE CALENDAR AND THE PROGRAM? WHICH APPLICATIONS / SYSTEM DO YOU USE?

Or you may receive even more specific questions, such as: What's on your calendar? Do you plan blocks of time to do certain types of work? Do you have an open calendar that everyone can see?...

7. HOW DO YOU ORGANIZE FILES, LINKS, AND TABS ON YOUR COMPUTER?

Just like your schedule, how you track files and other information is very important. After all, everything is digital!...

8. HOW TO PRIORITIZE WORK?

The day I watched Marie Forleo's film separating the important from the urgent, my life changed. Not all remote jobs start fast, but most of them are...

9. HOW DO YOU PREPARE FOR A MEETING AND PREPARE A MEETING? WHAT DO YOU SEE HAPPENING DURING THE MEETING?

Just as communication is essential when working remotely, so is organization. Because you won't have those opportunities in the elevator or a casual conversation in the lunchroom, you should take advantage of the little time you have in a video or phone conference...

10. HOW DO YOU USE TECHNOLOGY ON A DAILY BASIS, IN YOUR WORK AND FOR YOUR PLEASURE?

This is a great question because it shows your comfort level with technology, which is very important for a remote worker because you will be working with technology over time...