CTO hands-on

Licorne Society a été missionné par une startup en pleine croissance pour les aider à trouver leur CTO hands-on.🚀 Join a fast-growing B2B SaaS company reinventing how Europe’s largest enterprises negotiate 🚀Location: Paris, France (mostly in-person)Start Date: Q1 2026Contract Type: Full-time (CDI)Compensation: Fixed salary + bonus + equity (BSPCE-equivalent)Help reshape how billions are negotiatedEnterprise procurement teams negotiate millions every week — yet the negotiation layer remains fragmented, manual, and poorly tooled.We are building a cloud-based platform that enables large organizations to run eAuctions and structured eNegotiations with speed, reliability, and strong governance. The platform is already used by multiple tier-1 industrial and retail groups and has processed €100M+ in GMV.We are now internalizing our core engineering and laying the technical foundations for scale. As our first in-house engineering leader, you will take ownership of the core IP and architect the future of a mission-critical B2B product.Your roleYou will be the technical owner of the platform.This is a hands-on leadership role: you will write production code, make key architectural decisions, and progressively build the engineering function.You will take over from a strong external development team, ensure a smooth knowledge transfer, and set the company up for long-term product velocity and enterprise-grade reliability.What you will ownEnd-to-end platform architecture (frontend, backend, data, infrastructure)Production reliability for real, high-stakes enterprise workflowsSecurity, auditability, and data protection for sensitive procurement dataEngineering standards, delivery cadence, and future hiring roadmapAbout The CompanyWe are a Paris-based B2B SaaS startup (team of ~6) combining deep procurement expertise with startup execution speed.In The Past 12 Months, We HaveBuilt and shipped a high-performance SaaS platformSecured €1M+ in projected revenueRaised €2M+ from top-tier European venture fundsSigned multiple enterprise customers and are scaling rapidlyThe product is live, used daily, and delivering tangible value — customer satisfaction is one of our strongest signals.Product & technical roadmapWe have already built 18 types of eAuctions, giving buyers advanced levers to run better negotiations. What’s next:AI-driven Auction BuilderA system that reads incoming RFPs and recommends the optimal negotiation strategy — then configures it directly in the platform.Smarter automationEnhanced auction logic, pricing intelligence, and bidder behavior analysis using optimization algorithms and LLMs.End-to-end procurement workflowBecoming the central sourcing cockpit, with negotiation at the core and a seamless, integrated enterprise experience.✅ What success looks likeFirst 30 daysFull audit of codebase and infrastructure, with a clear risk map and action planKnowledge transfer completed with the external teamMonitoring, error tracking, and release processes stabilizedDays 30–90Measurable improvements in performance and reliabilityClear architectural direction documentedFirst key roadmap features shipped end-to-endAfter 3–6 monthsStrong delivery cadence, fewer incidents, faster iterationHiring and onboarding plan defined and first hire(s) made if neededCurrent tech stackFrontend: Nuxt 3, Vue, VuetifyBackend: Nuxt 3 (Nitro)Database: PostgreSQL (Supabase)Hosting: VercelThe stack can evolve as we scale — with a strong preference for pragmatic decisions that protect delivery speed.What we are looking forMust-havesStrong full-stack background with true ownership of production systemsSolid experience with Vue and Node.js (Nuxt is a big plus)Strong PostgreSQL fundamentals (Supabase experience is a plus)Experience building and operating a demanding B2B SaaS productHigh bar for reliability, performance, clean architecture, and securityComfortable working autonomously and making tradeoffsNice-to-havesPrevious experience leading or mentoring engineers (formally or informally)Built workflow-heavy or real-time systemsIntegration mindset (ERP, SAP-like systems, SSO, audit trails, exports)Interest in AI-enabled product features and automationWork setupWe are looking for someone based in Paris or willing to work mostly in person.Remote days are flexible, but we strongly believe that early-stage momentum is built through close, live collaboration, mainly from our offices at Station F and Châtelet.Hiring process☎️ Intro call (30 min)🧠 Technical deep dive with the current freelance tech lead🧩 Practical case (time-boxed) + architecture discussion🍽️ Team meeting and informal lunch #J-18808-Ljbffr