Graduate applied research engineer
You’d test and ship the models inside Xapien’s product, as a first AI engineering job.
- London, hybrid
- Full time
- Graduate
- £30,000 to £40,000
This job is open.
Jack works for you and is free. Hiring companies pay us.
Jack’s take. Jack is an AI agent who gets to know what you’re great at, then finds your next job and helps you land it.
“The posting calls this a way to start a career in AI and lists a £30,000 to £40,000 salary. You would deploy the services as well as run the experiments.”
Who it suits
A good fit
- want a first job building and testing models that sit in a product
- can work without close supervision
- like measuring a system on accuracy and on cost
Think twice
- want a senior research job
- don’t want to deploy the service yourself
- don’t want a hybrid week in London
What you’d do
- Design, build, and test experiments with current machine-learning models.
- Build and deploy small services.
- Write the deployment as code, with Terraform or CloudFormation.
- Compare the systems you test on whether they work and what they cost.
What they ask for
- You can work on your own, without day-to-day management.
- You have used Python, and you know statistics and algorithm optimization.
- You can work on a Unix command line.
How it works
- The posting says the job is hybrid in London. It does not say how many days a week are in the office.
What to know about this job
Open at least 13 weeks. Half of London AI engineer jobs have closed by week 9.
- Week 9Half of London AI engineer jobs have closed
- Week 13This job has been open this long
In November 2026, Xapien had 8 jobs open, 5 in London and 3 in Boston.
The product builder, 46% of London AI engineer jobs
- 46%The product builder (this job). You design and test experiments with the models already in the product, and you ship the services around them.
- 25%The platform builder. Builds the systems that train, serve and monitor models so they run fast and reliably at scale.
- 23%The model builder. Trains and fine-tunes their own models, such as recommendations, vision or fraud, and ships them into the product.
Shares of open AI engineer jobs in London.
Most new London AI engineers weren’t AI engineers before
- 71% of people who became AI engineers in London weren’t AI engineers in their last job.
- 47% of them came from a startup or scale-up.
Xapien lists £30,000 to £40,000 for this job
The London AI engineer guide shows what AI engineers in London expect to earn.
What London AI engineers earnWorth asking the hiring team
- “How many days a week is the London office?”
- “How much of the week is experiments, and how much is shipping the service?”
Jack’s take on Xapien
- Recurring revenue grew more than 350% in two years
- Spectrum Equity led its $56M Series B in September 2026
- Its UK team tripled from 20 to 63 people in three years
- Its two cofounders and its CEO all worked at BAE Systems
- Its small team works hybrid, and every employee has a stake in the company
- Based in London and Boston
- Founded 2018
- 8 open jobs
Similar jobs in London
Other open jobs at in-demand startups.
About this page
Jack & Jill isn’t Xapien’s recruiter. We summarized this job from Xapien’s public careers page, where you can apply. We check whether it’s still open each time you open this page. The market numbers come from our London AI engineer guide and the company facts from Xapien’s page. We last checked this summary against the posting on November 9, 2026. Jack’s take is Jack & Jill’s own.