Founding Engineer @Verso (backed by Hexa) - Permanent H/F

Founding Engineer @Verso (backed by Hexa)

Verso is building the Consumer Intelligence OS. We replace traditional qualitative research agencies with an AI-native platform that conducts, analyzes, and compounds consumer conversations at scale. Instead of one-off studies, companies get a continuous, structured understanding of their customers. Our ambition is to make consumer insight a real‑time, always‑on system embedded in every product and marketing decision. We’re starting with AI‑moderated interviews — but this is just the entry point. The long‑term product is a system of record for consumer understanding, powered by agentic workflows. Backed by Hexa (eFounders), behind Aircall, Front, Spendesk, Yousign and 50+ others. Verso is founded by an experienced team with a strong track record in strategy, technology, and company building. Lydia - CEO: HEC graduate, 7 years at BCG (Principal), expert in strategy, innovation, and consumer goods. Camille - CTO: Dual degree X/HEC, former lead at CO2 AI, expert in AI and scalable product development.

The role

You will join Verso as a Founding Engineer to own systems end‑to‑end, from infrastructure to product, with no strict boundaries, and help define engineering standards, observability, and the foundations of the team. You will design and scale a coherent AI system end‑to‑end, at the intersection of agents, data, and product:

• AI interviewer interacting with users at scale (voice & video), sustaining long‑form conversations with high reliability.
• Agent systems (state, memory, evaluation loops) orchestrating complex interactions.
• Real‑time and async pipelines transforming multimodal data (video, audio, text) into structured, actionable insights.
• Client platform to explore these insights through an AI‑native interface.
• Data systems to structure, query, and reuse qualitative knowledge at scale.
• Optimization of latency, cost, and performance across LLM, TTS, STT.
• Reliability of long‑running AI workflows in production.

What makes this role unique

• Build production‑grade AI systems, not prototypes.
• Work on long‑form, high‑stakes interactions, not short prompts.
• Design systems where AI quality is as critical as system reliability.
• Operate at the intersection of AI, data, infrastructure, and product.

Current stack

Frontend: TypeScript, React, Tailwind, shadcn.

AI: LLM orchestration, STT/TTS pipelines, eval systems (rapidly evolving).

Profile

We’re flexible on background, but we’re looking for people with a strong builder mindset.

• Some seniority (not straight out of school), but not necessarily 10+ years — 2–3 years in a strong environment is enough.
• Experience in early‑stage or high‑ownership environments.
• Strong bias toward action, autonomy, and ownership.
• Product and user‑first thinking.
• Pragmatism and speed.
• Optimism and resilience.
• High intellectual honesty.
• Ability to design and scale production systems.
• Comfort with ambiguity and messy real‑world problems.
• Ideally some exposure to AI / agentic systems in production (but not required).

TL;DR: we’re looking for people who are sharp, driven, and with whom we could realistically build a company.

Preferred Experience

• Building production‑grade AI systems on messy, real‑world data (not demos).
• Experience with complex systems (real‑time, pipelines, or LLM‑based products).
• Strong intuition for trade‑offs: latency, cost, quality, reliability.
• Motivation to build a category‑defining company with long‑term ownership.

Why Join

• Category shift: we’re turning consumer understanding into a continuous system — not just improving research workflows.
• Hard problems: production AI over multimodal, unstructured data (audio, video, text, structured), across: a B2C product (low latency, high scale); a B2B platform (enterprise‑grade reliability, security, integrity).
• Full ownership: architecture, product, and execution from day one.
• Meaningful equity: early‑stage package with strong upside (next fundraise soon).
• Hexa environment: access to top‑tier talent, resources, and a strong builder ecosystem.

Contract & Location

• Contract type: Permanent.
• Salary: 90,000 €.
• Location: Paris, France (Hybrid).
• Published on: 25 March 2026.