Founding Fullstack Engineer @Verso (backed by Hexa) at 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: 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 we’re looking for • You want to build production-grade AI systems on messy, real-world data — not demos • You’re 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) • You’re motivated by building an ambitious, category-defining company with long-term ownership - not just execution. Why join • Category-defining shift: we’re not improving research workflows — we’re 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: you’ll 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 there’s 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.