Founding Fullstack Engineer Verso (backed by Hexa)

Hexa

Job Location:

Paris - France

Monthly Salary: Not Disclosed

Posted on: 30+ days ago

Vacancies: 1 Vacancy

Job Summary

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.

Were 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:

An 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
A 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

You will build production-grade AI systems not prototypes
You will work on long-form high-stakes interactions not short prompts
You will design systems where AI quality is as critical as system reliability
You will operate at the intersection of AI data infrastructure and product

Current stack

Frontend: TypeScript React Tailwind shadcn
Backend: Python FastAPI SQLAlchemy
Infra: Vercel Railway Supabase AWS
AI: LLM orchestration STT/TTS pipelines eval systems (rapidly evolving)

Note: no need to necessarily master Python and Typescript your coding agents do

What were looking for

You want to build production-grade AI systems on messy real-world data not demos
Youre comfortable owning systems end-to-end from architecture to production
You have experience with complex systems (real-time data pipelines or LLM-based products)
You have strong intuition for trade-offs (latency cost quality reliability)
Youre motivated by building an ambitious category-defining company with long-term ownership - not just execution.

Why join

Category-defining shift: were not improving research workflows were turning consumer understanding into a continuous system
Hard technical problems: production AI systems over rich unstructured data (audio video text structured) spanning both a B2C product (low latency high scale responsiveness) and a B2B platform (enterprise-grade reliability security and data integrity).
Full ownership: youll own architecture product and execution from day one with direct impact on the company trajectory.
Meaningful equity: early-stage package with strong upside aligned with long-term value creation (next fundraise in the coming months).
Hexa environment: operate within a top-tier startup studio with access to talent resources and a strong builder ecosystem.

Verso is committed to creating a diverse environment. All qualified applicants will receive consideration for employment irrespective of gender origin identity background and sexual orientation.

We know theres a long way to go regarding diversity in our industry which is why we encourage all applicants - especially those listed above - to apply to our open positions.

Required Experience:

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 a...