Senior AI Platform Engineer
Posted on September 10, 2025 (about 3 hours ago)
Company Overview
Flo is the world's #1 health app focused on female health, boasting 400M+ downloads and 75M+ monthly users. Backed by a $200M investment led by General Atlantic, it reached a $1B valuation in 2024 with 6M paid subscribers and the highest-rated experience in the App Store's health category.
The Job
The Senior AI Platform Engineer will own the end-to-end AI/ML pipeline including CI/CD processes for ML and AI workflows. Responsibilities include managing code, versioning datasets, foundation and fine-tuned models, AI agents, and production endpoints for ML Engineers to collaborate and scale AI applications.
The AI Platform team enables ML and AI initiatives, building infrastructure like feature stores, model deployment pipelines, experiment tracking, and monitoring frameworks to maximize ROI and compliance.
Your Experience
Must have:
- 4+ years building and deploying production AI/ML systems
- Hands-on engineering with AI/LLM infrastructure and tooling
- Proficiency in Python; familiarity with Scala, Go, or Rust
- Cloud platform experience with AWS, GCP, or Azure AI services
- Databricks experience including Unity Catalog, MLflow, and Databricks ML
- Experience with ML infrastructure tools like MLflow
- Containerization and orchestration with Docker, Kubernetes, ML-specific operators
- AI model serving with modern inference servers and API gateways
Nice to have:
- Infrastructure as Code (Terraform, Ansible, etc.)
- Distributed computing with Databricks, Ray, or Spark
- AI safety and governance experience
- Multi-modal AI (vision-language, speech, etc.)
- Experience at a Tier-1 product company or product organization
Responsibilities
- Design and maintain automated pipelines for ML models and AI systems including LLMs and AI agents
- Implement robust CI/CD for model training, fine-tuning, evaluation, and deployment
- Deploy models, AI agents, and inference endpoints with automated testing and rollback
- Build infrastructure for LLM inference, fine-tuning, serving at scale
- Monitor model performance, drift, AI safety metrics, and compliance
- Evolve processes for traditional ML and cutting-edge AI technologies
Work Culture and Benefits
Flo is mission-led, product-driven, and fast-moving with a focus on ownership and impact. They offer:
- Competitive salary and annual reviews
- Performance incentive scheme
- Paid holiday, sick, and female health leave
- Enhanced parental leave and pay for diverse families
- Professional growth support
- Flexible office and home working with abroad travel opportunities
- 5-week paid sabbatical at 5-year anniversary
- Flo Premium for friends & family, plus health, pension, wellbeing perks
Diversity and Inclusion
Flo is an equal opportunity employer valuing differences and merit-based hiring across all backgrounds and identities.
How to Apply
Apply on the Greenhouse job board page for the Senior AI Platform Engineer position at Flo Health in London.