Forward Deployed Engineer
Build product features, integrations, and AI for HappyRobot’s customers, and stay with them from onboarding through everyday use.
- London, travel about 50% to 75% of the time
- Full time
- Third-party systems
- Pay not listed
This job is open.
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.
“This is a builder’s job across the product and the customer’s AI. You’d write full-stack code and tune prompts, voices, and transcribers.”
Who it suits
A good fit if you
- Like shipping product code and customer-facing AI in the same week
- Want to work across React, TypeScript, Node.js, and Python
- Enjoy explaining a technical system to someone who doesn’t write code
Think twice if you
- Want to stay in one place
- Haven’t shipped full-stack product code
- Prefer to leave the model, voice, and transcriber tuning to someone else
What you’d do
- Work with customers from onboarding through ongoing use, and help them integrate the AI and get more from it.
- Build features, prototypes, and tools that change a customer’s outcome.
- Write applications in React, TypeScript, Node.js, and Python.
- Design and iterate on prompts, voice tuning, and transcribers, and connect them through APIs and third-party systems.
What they ask for
- You have strong full-stack experience in React, TypeScript, and Node.js, and you’re proficient in Python.
- You’ve built AI applications, including prompting and tuning.
- You can manage APIs and third-party integrations, and explain the work to people who don’t write code.
- You can run several projects on a tight deadline, and you take ownership without waiting to be managed.
How it works
- You’d travel for customer discovery, workshops, demos, and on-site collaboration.
What to know before you apply
Open at least 19 weeks, longer than most London FDE roles
- Week 11Half of London FDE roles have closed
- Week 19This job so far
In November 2026, HappyRobot had 17 forward deployed engineer jobs open in 15 locations.
The builder, the most common kind of FDE in London
- 62%The builder (this job). Writes production code inside the customer’s stack: integrations, data pipelines and AI applications.
- 34%The deployment lead. Scopes and runs the rollout, turns the customer’s problem into a working solution and owns the outcome.
Shares of open FDE roles in London.
Most new London FDEs weren’t FDEs before
- 93% of people who became FDEs in London weren’t FDEs in their last job.
- 54% came from a startup or scale-up.
HappyRobot doesn’t list pay for this job
Our London FDE guide shows what FDEs in London expect to earn, so you can talk numbers with confidence.
What London FDEs earnWorth asking the hiring team
- “How much of the travel is outside the UK?”
- “How do you split a month between product code and the AI tuning?”
Jack’s take on HappyRobot
- Revenue grew more than fivefold in 11 months
- Valuation more than doubled to $1.2B in 11 months
- The team nearly tripled to 200+ people in a year
- Based in San Francisco and Madrid
- Founded 2023
- 77 open roles
Similar jobs in London
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About this page
Jack & Jill isn’t HappyRobot’s recruiter. We summarized this job from HappyRobot’s public careers page, where you can apply, and we check whether it’s still open each time you open this page. The market numbers come from our London FDE guide and the company facts from HappyRobot’s company page. We last checked this summary against the posting on November 9, 2026. Jack’s take is Jack & Jill’s own.