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VP of Security & Infrastructure

London💼 Full-time💰 $200,000–$200,000🗓 2026-09-09 → 2026-09-25

Core

Build and ship LLM-powered product features including personalized content recommendations, conversational AI insights, and AI-generated mobile push notifications for a global health and fitness app.

Role type

Senior AI Engineer (LLM & Product Engineering)

Builds

AI-driven features (recommendations, conversational insights, push notifications) for the Flo mobile app

Domain

Health & Fitness / Generative AI

Deliverable

product features

Required skills

Python, LLM product feature development, prompt engineering, LLM evaluation, fine-tuning, model serving, API/SDK integration, structured output design

Preferred skills

LLM evaluation frameworks (judges, graders), fine-tuning techniques (LoRA, RLHF/DPO), prompt optimization (DSPy), feature stores, personalization/ranking, data engineering (Spark, Delta tables)

Technologies

Llama, Gemma, MedGemma, Databricks, AWS (EKS), Terraform, GitHub Actions

Responsibilities

Build LLM-powered features (notifications, recommendations, insights); optimize latency and UX for AI output; iterate on prompt design and model calibration; enable A/B testing for model changes; design evaluation datasets; contribute to infrastructure (Databricks, AWS, Terraform)

Seniority

Senior, hands-on IC

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