CTO right-hand

Lucis (YC P25); Paris; Sur place; EUR 55 000 - 75 000; Plein temps

Résumé du poste

Lucis (YC P25) in Paris is hiring a Context Engineer / Applied AI associate to improve operational speed and quality through AI integration. You'll work directly with the CTO, identifying and implementing high-leverage workflows across teams. This role demands a blend of technical enablement and operational insight.

The ideal candidate has 3-6+ years of experience in product engineering, is a power user of AI tools, and thrives in fast-paced environments. Join us to help redefine healthcare with innovative AI solutions.

Qualifications

• 3–6+ years in product engineering, platform/devex, technical enablement, or applied AI.
• Ability to teach, write clearly, and drive adoption with technical and non-technical teams.
• Experience building internal tooling that others rely on day-to-day.

Responsabilités

• Audit how Lucis uses AI today.
• Ship a Lucis AI playbook with guidelines and examples.
• Build lightweight internal tools to automate repetitive work.
• Measure impact through adoption and quality improvements.

Connaissances

Product engineering

Technical enablement

Applied AI

Use of AI tools

Prototyping

Outils

Claude

ChatGPT

Cursor

Copilot

Description du poste

Making preventive health the default for every human in Europe

The mission

At Lucis, 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.

The role

Over the last year, AI went from “helpful tool” to something closer to a new kind of teammate: 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 Context Engineer / Applied AI associate to make Lucis meaningfully faster and higher quality by embedding AI into how we work. This is a direct line of contact with the CTO, thus also referred to as technical founder associate.

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.

You will partner closely with Product, Engineering, Operations, Growth, and Clinical, and report to the CTO.

What You’ll Do

• Audit how Lucis uses AI today: What works, what breaks, where it is risky, and where it can be 10x better.
• Ship a Lucis AI playbook: Prompt patterns, examples, do’s and don’ts, safety guidance, and “how we know it works.”
• Roll out 5–10 high-leverage workflows: Across engineering, product spec, support ops, growth, and clinical content.
• Build lightweight internal tools: Automations, scripts, small apps, or integrations that remove repetitive work.
• Measure impact: Adoption, time saved, and quality improvements. You care about “before/after,” not vibes.
• Increase reliability and trust: Guardrails, evaluations, and practical safety practices around sensitive data.

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 3–6+ years in product engineering, platform/devex, 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.
• 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-driven. You optimize for workflows people use and trust, not novelty.

Bonus points if

• Have built internal tooling that others rely on day‑to‑day.
• Have experience with LLM patterns (prompting, RAG, tool calling, agents) and evaluation approaches.
• Have worked in environments with real constraints around data handling, security, or compliance.
• Enjoy being the person who turns “fuzzy” into “shippable.”

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

• 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.