AI Tech Lead – Europe

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🇪🇺 Europe – Remote

⏳ Contract/Temporary

🟠 Senior

🤖 AI Engineer

👻 Ghost score 10%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Virtusan

WebsiteLinkedInAll Job Openings

11 - 50 employees

🏥 Healthcare

🍽️ Food & Beverage

🏨 Hospitality

💰 Corporate round on 2022-01

Healthcare • Food & Beverage • Hospitality

Virtusan is a Swiss-based company building an integrated longevity platform that combines an AI-powered operating system with wearable devices, sensor-driven living spaces, and regenerative equipment to extend human healthspan. Their Virtusan OS fuses biometric intelligence and continuously tracked behaviors to deliver predictive health insights and personalized coaching, while the Virtusan Ring + App, clinical-grade light therapy equipment, and Virtusan Spaces provide hardware and environment-level interventions. They partner with clinics, insurers, and hospitality groups to embed longevity tools into everyday life.

📋 Description

• Build the intelligence behind Virtusan’s health coach, turning biometric and behavioural signals into personalised programmes • Turn wearable and in-app data into recovery, stress and sleep insights using personal baselines and trend detection • Normalise metrics across device vendors, weight sources by reliability, and handle missing data and device switches • Personalise protocol sequences by dose and timing using classical machine learning, contextual bandits, sequential recommenders or reinforcement learning • Learn from user behaviour and biometric responses which protocols work and for whom • Define offline metrics, online experiments and production monitoring for every model and LLM feature • Own the AI platform roadmap, training and serving pipelines, data quality and architecture on the Python and Azure stack • Make and document key architecture and modelling decisions through RFCs, ADRs and similar documentation • Build privacy and secure handling of sensitive health data into the system design • Help product, design and marketing shape AI features and understand model capabilities and limitations • Prototype, evaluate and take code through to production • Serve as the technical authority for AI across engineering and set standards for the team

🎯 Requirements

• 6+ years in ML/AI engineering • 2+ years in a lead role • At least one product taken from zero to production • Python, FastAPI and production MLOps on Azure or another major cloud • Experience with time series, recommender systems, causal/uplift methods and strong statistics • A/B testing, model evaluation and production monitoring • LLMs and LangGraph or similar on Azure OpenAI, and knowing when not to use them • Experience as a tech lead or staff engineer making technical decisions followed by a team of engineers • Privacy-aware handling of health data • Based in Europe • Fluent in English • Nice to have: bandits, RL or off-policy evaluation • Nice to have: health or wearable data experience • Nice to have: literature mining • Nice to have: AI in engineering workflows, including coding agents, AI-assisted testing and CI • CV and answers to 2 of 3 application questions required

🏖️ Benefits

• 12-month contract • Freelancer / independent contractor engagement • 42 hours/week • Remote work in the European Economic Area • Opportunity to build Virtusan’s AI platform and intelligence behind its health coach • Hands-on ownership of AI architecture, modelling, training and serving pipelines • Collaboration with product, design and marketing teams • Work on digital health, wearable and biometric data products