Lead Développeur - Full-Stack (JS Vue / Nuxt) - CDI

CROWN Procurement; Paris; Sur place; EUR 50 000 - 80 000; Plein temps

Résumé du poste

Crown recherche un Lead Developer fondateur pour diriger le développement de sa plateforme SaaS d'enchères électroniques. En rejoignant une équipe passionnée, vous jouerez un rôle clé dans l'architecture, l'optimisation de la performance, et l'implémentation des meilleures pratiques pour transformer le secteur de ProcureTech en Europe. Cette mission offre l'opportunité de contribuer à un produit de pointe tout en étant au cœur d'une startup en pleine expansion.

Qualifications

• 4+ ans d'expérience en développement full-stack, expertise en Vue.js et Node.js.
• Connaissance forte en architecture logicielle et design évolutif.
• Passion pour la performance, la sécurité et l'expérience produit.

Responsabilités

• Concevoir l'architecture évolutive pour des systèmes d'enchères performants.
• Développer de nouvelles fonctionnalités sur le front et le back-end.
• Assurer la sécurité des données sensibles et surveiller la santé de l'application.

Connaissances

Développement Full-Stack

Vue.js

Node.js

Architecture logicielle

SQL

Sécurité

Performance

Outils

PostgreSQL

Supabase

Nuxt.js

Vercel

Description du poste

Join Crown as our Founding Lead Developer to lead the development of Crown – and help reinvent ProcureTech in Europe!

Location : Paris, France

Start Date : ASAP

Contract Type : Full-time (CDI or equivalent)

Salary : Based on experience (+ BSPCE equity)

What We’re Building

CROWN MACHINE is a high-performance, AI-powered SaaS platform transforming how companies negotiate through real-time electronic auctions (eAuctions). Now, we’re scaling—and there’s so much still to build. From connecting LLMs and optimization algorithms to refining UX and automation, you’ll join at a pivotal moment where your technical vision and code will shape the platform’s future. Within months, we’ve built a cutting-edge product, onboarded several enterprise clients, closed €1M+ in projected revenue, and raised our first round from top-tier VCs like Kima Ventures, Heartfelt, and Prequel.

Who We Are

Crown was founded by Mykyta Voytenko , an eProcurement expert with 15+ years at Nestlé, Sanofi, and Engie. We’re a passionate, international team of 10, blending deep procurement expertise with startup speed and tech ambition. Joining now means becoming part of the founding team — where your contributions will shape the future of B2B negotiation tech.

As Lead (founding) Developer , you’ll own the architecture, performance, and scalability of our full-stack platform. You’ll lead technical decisions, and drive the next phase of product development with a strong focus on real-time systems, data privacy, and seamless user experience. Today, the platform is live and running real-time eAuctions with enterprise clients, but the most exciting work is ahead : enhancing scalability, expanding eAuction logic, and bringing in smarter decision-support features. We're also laying the groundwork for smarter automation and decision-making, leveraging data and AI where it creates real value. You’ll play a central role in bringing these capabilities to life.

• Frontend : Nuxt.js 3 (Vue.js), Vuetify
• Backend : Nuxt.js 3 (Nitro)

Responsibilities

Technical Strategy & Architecture (30%)

• Design scalable, secure architecture for high-performance auction systems.
• Define technical roadmap in collaboration with product and ops teams.
• Ensure modular, maintainable code and lead implementation of best practices.

Full-Stack Development (30%)

• Build new features across front and back-end.
• Optimize platform performance, latency, and UX.
• Maintain a high standard of code quality and testing.
• Collaborate closely with our Product Designer and Head of Ops.
• Conduct code reviews, lead sprint planning, and guide technical onboarding.
• Participate in real-time eAuctions.

Security, Deployment & Monitoring (15%)

• Ensure secure handling of sensitive procurement data.
• Maintain DevOps workflows and Vercel deployment.
• Monitor application health, analytics, and performance bottlenecks.

About You

• 4+ years of experience as a full-stack developer (Experience in Vue.js and Node.js mandatory)
• Strong foundation in software architecture and scalable design
• Experience with PostgreSQL / Supabase and serverless environments
• You care deeply about performance, security, and product experience
• Comfortable working autonomously in a fast-paced startup
• Experience leading or mentoring developers

Bonus Points

• Experience with Nuxt.js, Vuetify, Supabase, and real-time application architecture
• Previous exposure to B2B SaaS or procurement / marketplace products
• Interest in AI-driven tooling and procurement automation

Our Hiring Process

• Application & Pre-Selection → Send us your CV and a short motivation note.
• Intro Chat → 30-minute conversation with our Chief of Staff.
• Technical Questionnaire → A few async questions and a mini case.
• Deep-Dive Interview → 30-60-minute session with the current Tech Team who developed the app.
• Meet the Team → Informal chat with Crown’s crew.
• References & Decision → We move fast and give you clear, actionable feedback.

Learn More About Crown

LinkedIn

Website

Demo

Ready to build the future of eProcurement?

Join us and shape a platform used by some of Europe’s top industrials.