---
title: 'CTO right-hand at Lucis'
canonical: 'https://feeny.ai/job/cto-right-hand-lucis-paris-q7zmgnsvd043'
type: 'job'
last_seen: '2026-09-08'
---

# CTO right-hand at Lucis

- **Company:** Lucis
- **Location:** Paris, France
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-04-08
- **Last confirmed live:** 2026-09-08
- **Apply:** https://jobs.ashbyhq.com/lucis/71641608-fbbe-4f81-803e-9364c86b2f0e

## Job description

Making preventive health the default for every human in Europe

The mission

At Lucis https://lucis.life/?utm_source=career_job_desc&utm_medium=content, we believe healthcare should be preventive, not reactive. We’re building the OS for human longevity to help people add more healthy years to their lives. You can read more about who we are and how we work here https://lucis.life/careers?utm_source=career_job_desc&utm_medium=content.

## THE ROLE

Over the last year, AI went from being helpful to something closer to an internal harness, an army of agents: capable of drafting, coding, analyzing, and operating across many steps when given the right context and guardrails.

We think the next step-function in startup speed will come from teams that operationalize AI well:

- Not one-off prompts.
- Not a few power users.
- But repeatable workflows that the whole company trusts and actually adopts.

This role exists to make that real at Lucis.

We are hiring a CTO right-hand to make Lucis meaningfully faster and higher quality by embedding AI into how we work.

This is not a pure research role. It is an enablement + systems role:

- You will find high-leverage workflows across teams.
- Turn them into repeatable playbooks and lightweight internal products.
- Put measurement in place.
- Build guardrails so the outputs are reliable, safe, and trustworthy.
- Help the CTO in anything tech/founder-level, and ensure that technical and product-related work is orchestrated properly.

## ABOUT YOU

You’re passionate about the future of human health and want your work to help people stay healthy for longer. You move quickly from idea to execution, take full ownership of what you build, and work best with talented people who care as much as you do.

You thrive in fast‑moving environments, learn by doing, and value feedback as a way to continuously improve.

You’ll fit in well if

- Have 1 to 3+ years in product engineering, platform eng, technical enablement, or applied AI, with clear evidence of shipped outcomes.
- Are a power user of modern AI tools (Claude, ChatGPT, Cursor, Copilot, v0, etc.) and can explain when they fail and what you do about it. You've reached stage 3 or 4 of the state of AI adoption https://claude.ai/code/artifact/bfdfaef9-bc62-4dfe-ba9e-c58a26c9accf.
- Can prototype quickly and ship small improvements weekly.
- Have strong enablement instincts. You can teach, write clearly, and drive adoption with technical and non-technical teammates.
- Are pragmatic and impact-drivenYou optimize for workflows people use and trust, not novelty.

## Why Lucis

- You’ll work on a mission that matters: helping people take control of their health through better information and guidance.
- You’ll have leverage across the whole company: your work changes how everyone ships.
- You’ll help define our AI operating system from early days.

## THE PROCESS

- Intro call (20 min): culture & role fit.
- Technical interview (30 min)
- At-home case study: hands-on project, delivery in 2 days.
- Deep dive (90 min) and team chat (on-site)
- Reference calls

## HOW WE WORK

We work together from our Paris hub. We’re passionate about what we’re building and believe the fastest way to create something exceptional is side by side. We’re open to relocation support for the right individuals, and we welcome missionaries who travel to work with us in Paris on a regular basis.

- Rigor without ego: Audits, science, and code all deserve the same high bar.
- Radical ownership: Feedback loops are short; everyone contributes to building the best version of Lucis.
- Velocity over perfection: We ship daily and prefer a good decision today over a perfect one next week.

At Lucis, AI isn't just our product, it's our engine. 100% of our teams are equipped with the best AI agents. You have carte blanche to explore and automate everything that can be, so you can focus exclusively on high-value work.

## About Lucis

## Company Overview
- **One-liner**: Lucis is building Europe’s first AI-driven preventive health platform that combines blood testing with personalised action plans to help people add more healthy years to their lives.
- **Entity Type**: Private (YC-backed, Series A)
- **Headquarters**: Paris, France
- **Founded**: 2025
- **Founders**: Baptiste Debever and Max Berthelot

## Core Business
- **Primary industry**: Healthcare (Preventive health, longevity, healthtech)
- **Target customers**: B2C – health-conscious individuals in Europe who want to move from reactive to proactive healthcare
- **Mission or purpose statement**: “To make preventive health the default for every human in Europe” ([lucis.life/careers](https://www.lucis.life/careers))

## Products & Services
- **Lucis Platform**: An AI-powered preventive health service. Users book a blood draw at certified European labs (Eurofins network), analyse 60–110+ biomarkers, and receive a biological age, personalised scores (energy, inflammation, metabolism, hormones), and a medically reviewed action plan covering nutrition, sleep, supplements, exercise, and mental health. The platform connects to wearables (Withings, Garmin, Oura) for progress tracking and includes an AI chat (“AI doctor” agent). Available as two subscription plans:
  - **Discovery (490€/year)** – Two tests per year across 110+ biomarkers, 11 body systems, full dashboard & AI chat.
  - **Essential (190€/year)** – One annual test with 60 biomarkers, 5 body systems, and a personalised plan. ([lucis.life/press-kit](https://www.lucis.life/press-kit))

## Market Standing
- **Valuation/Market Cap**: Not publicly disclosed
- **Key Metric**: Total funding of $28.5M – $8.5M seed round and $20M Series A (as of June 2026) ([ycombinator.com](https://www.ycombinator.com/companies/lucis))
- **Notable Investors/Partners**: Y Combinator, General Catalyst, Kima Ventures, Motier Ventures, North South Ventures; plus angels including founders of Airbyte, Strapi, Sqreen, WePay, Plato, Veepee, and Zenly ([lucis.life/press-kit](https://www.lucis.life/press-kit))
- **Growth Signals**:
  - Serving 5,000+ paying members across France, Portugal, the UK, and Ireland ([ycombinator.com](https://www.ycombinator.com/companies/lucis))
  - Growing 10% week over week ([ycombinator.com](https://www.ycombinator.com/companies/lucis))
  - Doubled team size in the past year and on track to double again ([lucis.life/careers](https://www.lucis.life/careers))
  - Expanding lab partner network across Europe

## Competitive Advantages
- **AI-native architecture**: An AI “doctor” agent already shipping actionable protocols daily; entire company runs on AI agents for automation and efficiency ([lucis.life/careers](https://www.lucis.life/careers))
- **Comprehensive biomarker analysis**: 110+ biomarkers across 10+ body systems, unmatched breadth in the European consumer preventive health space
- **Full-stack integration**: Certified labs (Eurofins), wearable sync, AI interpretation, and clinical review – all in one platform
- **Data protection**: GDPR compliant and ISO 27001 certified, with strict data standards that build trust ([lucis.life/careers](https://www.lucis.life/careers))
- **Founder-market fit**: Founders combine repeat startup experience with deep domain knowledge in biomarker science and longevity

## Strategic Focus
- **Scale across Europe**: Currently live in France, UK, Ireland, Portugal; aggressively expanding to more markets
- **Product depth**: Enhancing the AI reasoning engine and adding more integrations with labs and wearables to improve the action plan quality
- **Building the “OS” for preventive health**: Shifting from one-time tests to continuous, longitudinal health tracking and automated interventions ([lucis.life/careers](https://www.lucis.life/careers))

## Why Work Here
- **AI-native culture**: Every team member gets unlimited tokens and complete autonomy to automate low-value tasks, freeing time for high-impact work ([lucis.life/careers](https://www.lucis.life/careers))
- **Ownership ethos**: “We hire adults and treat them like owners” – competitive salaries and meaningful equity; you share in the company’s success ([lucis.life/careers](https://www.lucis.life/careers))
- **Flexibility**: Generous, mandatory vacation; wellness stipend; comprehensive health insurance; full access to the Lucis platform (including advanced blood panels) for you and your family ([lucis.life/careers](https://www.lucis.life/careers))
- **Continuous learning**: Budget for books, courses, and conferences; access to experts and mentors from the investor network
- **Work model**: Primarily in-person at the Paris hub; relocation support available for the right candidates; occasional remote flexibility for the right fit ([lucis.life/careers](https://www.lucis.life/careers))
- **Team composition**: Repeat founders, engineers, health science experts – small, ambitious team (currently 17) that moves fast and ships daily ([ycombinator.com](https://www.ycombinator.com/companies/lucis))

## Sources
1. [lucis.life/careers](https://www.lucis.life/careers)
2. [ycombinator.com/companies/lucis/jobs](https://www.ycombinator.com/companies/lucis/jobs)
3. [lucis.life/en/careers](https://www.lucis.life/en/careers)
4. [ycombinator.com/companies/lucis](https://www.ycombinator.com/companies/lucis)
5. [lucis.life/press-kit](https://www.lucis.life/press-kit)

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