Full Stack Engineer at a confidential company - VC-backed AI Startup

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Title

Full Stack Engineer at a confidential company - VC-backed AI Startup

Job Title

Full Stack Engineer

Salary

Not Disclosed + Equity

Company Description

a confidential company - Hexa-backed AI platform for public tenders

Job Description

Join a fast-growing team as a Full Stack Engineer to revolutionize how companies win public contracts. You will build high-performance collaborative productivity tools and sophisticated AI bid-response workflows. Working directly with the CTO, you will own features end-to-end, translating complex user needs into seamless, pixel-perfect interfaces that save weeks of manual work.

Location

Paris, France

Why this role is remarkable

• Exceptional pedigree as a venture-backed startup from Hexa (the studio behind Aircall, Spendesk, and Front) with a €3M seed round led by Point Nine.
• Direct impact on a €500M daily market by building the first "operating system" for public tenders using cutting-edge RAG and LLM workflows.
• High-velocity shipping culture where you act as a founder, participating in user calls and seeing your code reach clients like Carrefour and OpenClassrooms immediately.

• Develop and refine a collaborative B2B SaaS platform using React and TypeScript, ensuring an elite UX for teams managing complex tender pipelines.
• Architect and implement AI-driven features, including RAG workflows and document ingestion systems that generate tailored, multi-page bid responses in minutes.
• Own the full product lifecycle from discovery to deployment, collaborating with the CEO and CTO to suggest technical tradeoffs and fix real-world user problems.

• Professional experience (3-8 years) in full-stack development with deep expertise in React and a strong command of TypeScript and NestJS.
• Proven track record of shipping products in fast-paced startup environments, possessing a "builder" mindset that favors speed and iteration over over-engineering.
• Excellent communication skills and low ego, comfortable working in a hybrid Paris environment and eager to contribute to a transparent, high-trust team culture.

Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.

And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.

Next steps

Step 1. Visit our website.

Step 2. Click 'Talk to Jack'.

Step 3. Talk to Jack so he can understand your experience and ambitions.

Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.

Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction.

Step 6. If not, Jack will find you excellent alternatives. All for free.

We never post fake jobs

This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.

Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.

We appreciate this can make them look a bit suspect, but there isn't much we can do about it.

Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.