Founding Engineer in London

Founding Engineer in London

London Full-Time No working from home possible
Delphiventures

At a Glance

  • Tasks: Join us to build an AI stack that empowers users and organisations.
  • Company: Exciting startup in London with a strong focus on decentralised AI.
  • Benefits: Competitive salary, equity, private health insurance, and top-notch tech equipment.
  • Other info: Intense, collaborative culture with rapid learning and growth opportunities.
  • Why this job: Be part of a revolutionary project that prioritises privacy and user control.
  • Qualifications: Strong problem-solving skills and a passion for impactful work.

Why we're building EXO

Imagine a world where AI isn’t centralised — where no handful of companies controls access, and sovereignty, privacy, and accessibility are the defaults. EXO is how we get there. We make it possible to run AI locally — from a single MacBook to clusters of thousands — putting people and organisations back in control.

Who we are

  • SF culture, but in London (we are all in-person in our office near Tower Bridge): we all want to build something great.
  • Open‑source repo among the fastest‑growing in AI, with 30K+ stars and 1M+ downloads.
  • Enterprise demand is so strong that we’re turning customers away.
  • Small, elite team in London with exceptional talent density (Previously Oxford/Cambridge, IMO, Jane Street).

What we’re building

We are building an AI stack from the ground up, optimised for consumer hardware — from the models to the distributed algorithms, scheduling, and orchestration. Discovering and networking heterogeneous devices. Sharding and parallelising AI workloads across them. Scheduling to maximise throughput and latency on mixed hardware. Delivering reliability and performance on par with the cloud — without giving up sovereignty or privacy.

On consumer hardware, we face higher memory‑to‑FLOPS ratios, unreliable connections as devices go offline and move networks, and higher network bandwidth‑to‑FLOPS ratios than datacentre GPUs.

Who we’re looking for

We’re hiring a Founding Engineer to help us make EXO the default way AI runs. You might be a fit if:

  • Strong problem‑solving ability — we care about aptitude and reasoning, not years of experience.
  • Product‑focused — you think about the user impact as well as the technical details.
  • Ambitious — you want to work on something that matters and will push you to your limits.
  • Fast‑moving — you prefer momentum over perfection and thrive in rapid iteration.
  • High‑agency — you take ownership, drive solutions, and work independently.

How we work

We’re in‑person in London. The culture is intense, collaborative and there is constant learning.

Tech stack

  • Python — core orchestration + ML
  • Rust — networking, exposed to Python via FFI
  • C++ — Apple MLX core

You don’t need to know all of these upfront. The ability to learn quickly and reason from first principles matters more.

What we offer

  • £200K–£270K ($270K-$360K) base salary (SF‑level comp in London)
  • Generous equity — meaningful ownership that reflects your impact
  • Private health insurance
  • Fully kitted‑out Mac Studio / MacBook Pro
  • Dinner + Ubers when working late

EXO isn’t for everyone. Most people should not join. But if you’re the right kind of person, this will be the ride of your life.

Founding Engineer in London employer: Delphiventures

EXO Engineering is an exceptional employer for those seeking to make a significant impact in the AI landscape. With a dynamic, collaborative culture in London, we offer competitive salaries, generous equity, and a fully equipped workspace, all while fostering an environment of continuous learning and innovation. Join our elite team of talented engineers and be part of a mission that prioritises sovereignty, privacy, and accessibility in AI technology.

Delphiventures

Contact Details:

Delphiventures Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Founding Engineer 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 Delphiventures 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 Delphiventures.

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 Delphiventures.

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 Delphiventures 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 Founding Engineer in London

Problem-Solving Ability
Product Focus
Ambition
Rapid Iteration
High Agency
Python
Rust

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 Delphiventures.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Delphiventures 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 Delphiventures

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 Delphiventures 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.