Flo Health

Senior AI/ML engineer

Flo Health · London

Posted about 3 months ago

or apply directly on Flo Health's site. We never take the application ourselves.

Is this posting real?

This role has been open
80 days
Flo Health's roles stay open a median of 81 days
Reposted
No
Salary listed
No
0% of Flo Health's roles list one
Ghost-job risk at Flo Health
high
28 stale, 1 reposted of 28 open
Hiring momentum
45 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-10-23

Measured from postings appearing on and disappearing from Flo Health's own greenhouse board since 2026-08-03. Full hiring picture for Flo Health.

About this role

As a Senior AI Engineer at Flo, you will be responsible for developing and shipping AI-driven features for the health and fitness app, focusing on personalized content recommendations and conversational AI insights. Your role will involve optimizing the performance and user experience of these features, collaborating with cross-functional teams, and contributing to the underlying infrastructure as needed.

Our read on this posting2.6out of 5
benefits
4/5
freshness
1/5
career value
4/5
role clarity
4/5
pay transparency
0/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Flo Health as an employer.

What you need

  • 7+ years of software engineering experience
  • Recent hands-on experience building product features backed by LLMs
  • Experience with at least one of: prompt engineering, LLM evaluation, fine-tuning, or model serving
  • Strong Python skills and comfort working with APIs/SDKs that wrap LLM calls
  • A track record of shipping user-facing features with attention to latency, tone, and quality of AI output
  • Comfort picking up new infrastructure tools (Databricks, AWS, Terraform, GitHub Actions) as needed

Nice to have

  • Experience with LLM evaluation frameworks (judges, graders, calibration methodology) or fine-tuning techniques (LoRA, RLHF/DPO, model distillation)
  • Experience with prompt optimisation frameworks (DSPy or similar)
  • Experience with feature stores or personalization/ranking relevant to in-app content recommendation work
  • Experience in healthcare, regulated-industry, or safety-critical AI systems
  • Fundamentals in data engineering (Spark, Delta tables, Parquet)

What you get

  • Competitive salary and annual reviews
  • Opportunity to participate in Flo’s performance incentive scheme
  • Paid holiday, sick leave, and female health leave
  • Enhanced parental leave and pay for maternity, paternity, same-sex and adoptive parents
  • Accelerated professional growth through world-changing work and learning support
  • In-person collaboration and work in a hybrid model, with 3 days per week spent in the office

Worth weighing

  • No specific mention of team size or structure
  • Salary range provided is broad, which may indicate flexibility but also uncertainty in compensation negotiations
  • The role involves significant collaboration across various teams, which may require strong interpersonal skills

Summarised from Flo Health's posting. Read the full original.

Listed by Flo Health on their greenhouse job board, last confirmed open on 2026-10-23. PitchMeAI is not the employer.

More roles at Flo Health

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