At a Glance
- Tasks: Design and build core infrastructure for AI reliability measurement and automated pipelines.
- Company: Isidor, a pioneering tech startup focused on trustworthy AI.
- Benefits: Competitive salary, equity, relocation package, and housing bonus.
- Other info: Join a fast-paced team backed by top investors and shape AI's future.
- Why this job: Make a real impact on the future of AI with cutting-edge technology.
- Qualifications: 1-5 years in backend systems, cloud infrastructure, and DevOps experience.
The predicted salary is between 60000 - 80000 £ per year.
About Us
Isidor is building the foundation of reliable AI. We believe that the next leap in AI depends as much on understanding and measuring model behaviour as it does on model size. To make AI trustworthy, we need systems that verify outputs, benchmark performance, and automate evaluation across billions of examples. Isidor was founded by engineers and researchers who care deeply about precision, transparency, and scientific rigor. We are a small, fast-moving team working directly with frontier AI labs and enterprise to make evaluation as measurable and reproducible as training itself.
The Role
As a Founding Engineer, you’ll own the architecture that defines how AI reliability is measured, from scalable backend systems to forward deployed pipelines and client-facing APIs. You will:
- Design and build the core infrastructure for data ingestion, evaluation, and benchmarking at scale
- Implement automated pipelines that measure model reliability, and evaluation metrics
- Lead DevOps and cloud automation
- Collaborate directly with AI research labs and enterprise clients
- Contribute to the company’s technical direction, culture, and engineering standards from first principles
What We’re Looking For
- 1-5 years building and scaling backend systems, strong experience with front end
- Understanding of cloud infrastructure (AWS, GCP)
- Expertise in DevOps, CI/CD, and performance tuning
- Experience building end-to-end systems from scratch
- Proven collaboration record with small teams, wearing many hats
Bonus points if you have:
- Built large-scale ML evaluation or annotation platforms
- Designed metrics pipelines for AI workflows
- Experience in AI research teams or startups to design technical infrastructure
- A strong appetite for a fast-paced environment requiring initiative and ownership
Why Join Us
Your work will directly influence the development of the next generation of AI models, giving you the opportunity to make an outsized impact on frontier research and implementation in enterprise.
Details
- Employment Type: Full time, in-office
- Location: London (in-person), with potential for relocation to San Francisco in H1 2026 (with visa support)
- Compensation: Competitive salary + equity
Benefits
- Relocation package
- Housing bonus (if within 3 miles of the office)
Please reach out with any questions to founders@isidor.ai
Founding Engineer in London employer: Isidor
Isidor is an exceptional employer for those looking to make a significant impact in the AI field. With a strong focus on precision and scientific rigor, our collaborative work culture fosters innovation and growth, allowing you to shape the future of AI reliability. Located in London, we offer competitive salaries, equity options, and unique benefits such as a relocation package and housing bonuses, ensuring that our team members are well-supported both personally and professionally.
StudySmarter Expert Advice🤫
We think this is how you could land Founding Engineer in London
✨Tip Number 1
Network like a pro! Reach out to people in the AI and engineering space, especially those connected to Isidor. A friendly chat can open doors that applications alone can't.
✨Tip Number 2
Show off your skills! If you’ve built any cool projects or have relevant experience, create a portfolio or GitHub repo. This is your chance to demonstrate your expertise in backend systems and DevOps.
✨Tip Number 3
Prepare for the interview by diving deep into Isidor’s mission and values. Understand their focus on AI reliability and be ready to discuss how your background aligns with their goals.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows you’re genuinely interested in being part of the Isidor team.
We think you need these skills to ace Founding Engineer in London
Some tips for your application 🫡
Show Your Passion for AI:When you're writing your application, let your enthusiasm for AI shine through! We want to see how much you care about making AI reliable and trustworthy. Share any personal projects or experiences that highlight your commitment to this field.
Tailor Your Application:Make sure to customise your application to fit the role of Founding Engineer. Highlight your experience with backend systems, cloud infrastructure, and DevOps. We love seeing how your skills align with what we're building at Isidor!
Be Clear and Concise:Keep your application straightforward and to the point. We appreciate clarity, so avoid jargon and fluff. Use bullet points if it helps convey your experience better. Remember, we’re looking for someone who can communicate effectively!
Apply Through Our Website:Don’t forget to submit your application through our website! It’s the best way for us to keep track of your application and ensure it gets the attention it deserves. Plus, it shows you’re serious about joining our team!
How to prepare for a job interview at Isidor
✨Know Your Tech Inside Out
Make sure you’re well-versed in the technologies mentioned in the job description, especially backend systems and cloud infrastructure like AWS or GCP. Brush up on your DevOps practices and be ready to discuss how you've implemented CI/CD pipelines in past projects.
✨Showcase Your Collaboration Skills
Isidor values teamwork, so prepare examples of how you've successfully collaborated with small teams. Think about times when you wore multiple hats and contributed to a project’s success. Be ready to discuss how you can bring that collaborative spirit to their fast-paced environment.
✨Demonstrate Your Problem-Solving Abilities
Be prepared to tackle hypothetical scenarios related to AI reliability and model evaluation during the interview. Show them your thought process and how you approach complex problems, as this will highlight your ability to contribute to their technical direction.
✨Express Your Passion for AI
Isidor is looking for someone who cares about precision and scientific rigor. Share your enthusiasm for AI and any relevant projects or research you've been involved in. This will help convey your alignment with their mission and culture.
