Builder in residence

Who we are Hexa is building the infrastructure for exceptional entrepreneurs, wherever they are in their journey. Our founding activity is a startup studio (Hexa Start): we create companies from scratch with outstanding founders, and support them intensively from idea to product-market fit. But we've grown beyond that. Hexa Sprint supports early-stage startups that already exist and need to accelerate hard. Hexa Scale works with more mature companies ready to go to the next level. Three distinct models, one shared ambition: back the right people and help them build something that lasts. Earlier this year, we brought Tanguy Goretti https://www.linkedin.com/in/tanguygo/ on board as our CTO, a signal of where we're headed. He operates as a tech leader and ecosystem builder: supporting founders across our portfolio on technical decisions, pushing Hexa's employer brand in the engineering world, building partnerships with the best tools and labs out there, and helping early-stage CTOs level up. He's running a high-leverage function, and he's looking for someone to join him. The role You'll work directly alongside Tanguy and you're here to build! What you'll actually do - Build internal tools that give our founders and core team an edge, on fundraising, recruiting, GTM. Launch agents that automate what slows us down. - Launch MVP for new startups alongside our partners, on the hottest topics, before there's a team. Short deadlines, fast shipping, real stakes. Probably the most exciting part of the job. - Support the Hexa tech ecosystem: our conferences with top labs, our CTO lunches with partners like Cloudflare or Vercel, and the community we're building around it. What we're looking for - Recently graduated from a top engineering school - Deeply autonomous: you don't need hand-holding, you need a problem worth solving - Side projects that prove it. Cool ones. - AI-native: you use it in everything you touch, and it shows in what you've built in the last 6 months - TypeScript and/or Python. - Based in Paris (at least 3 days/week) What's in it for you - Package: €72K to €85K gross/year (base salary of €60K–€71K + 20% annual profit sharing) - Opportunity to invest in Hexa portfolio startups at a (very) preferential rate - Swile meal card - 8 to 12 RTT days per year - Flexible remote work policy - Mobility budget: €500/year for green transportation (bike, metro, electric scooter) - Health insurance with 50% coverage for you and your family - 1% Holiday bonus