--- title: 'Lead Tech FullStack Java (F/H) - Rennes at SFEIR' canonical: 'https://feeny.ai/job/lead-tech-fullstack-java-f-h-rennes-sfeir-rennes-n0hbyw0tvxqa' type: 'job' last_seen: '2026-10-18' --- # Lead Tech FullStack Java (F/H) - Rennes at SFEIR - **Company:** SFEIR - **Location:** Rennes, France - **Work type:** hybrid - **Posted:** 2026-02-02 - **Last confirmed live:** 2026-10-18 - **Apply:** https://jobs.lever.co/sfeir/46036a3b-d76d-4f49-b087-7054e09a0a1b ## Job description 🚀 SFEIR s’installe Ă  Rennes : Devenez l'un·e de nos pionnier·e·s ! SFEIR, c’est avant tout une communautĂ© de 900 passionné·e·s de tech, prĂ©sent·e·s en France, en Belgique et au Luxembourg. Aujourd’hui, nous ouvrons un nouveau chapitre et nous cherchons nos futur·e·s talents pour lancer l'agence de Rennes ! Notre mission reste la mĂȘme : accompagner nos clients sur leurs dĂ©fis les plus ambitieux : - DĂ©veloppement d'applications web et mobiles performantes ; - Architecture SI, Cloud et Data « future-proof » ; - Innovation par l’IA avec des solutions concrĂštes ; - Excellence technique via la promotion des meilleures pratiques. Le projet SFEIR Rennes : C'est Quoi ? Rejoindre SFEIR Rennes aujourd'hui, c'est l'opportunitĂ© rare de participer Ă  la crĂ©ation d'une agence dĂšs ses premiers jours : - Une Ă©quipe Ă  construire : Soyez au cƓur de la naissance d'une communautĂ© soudĂ©e par la passion tech ; - Un encadrement de proximitĂ© : Une Ă©quipe managĂ©riale nantaise expĂ©rimentĂ©e composĂ©e de Hoani, Adrien, Benoit, Jean-François et Florian pour vous accompagner dans ce lancement ; - Un terrain de jeu local : Participez au dĂ©veloppement de nos futurs partenariats dans l'Ă©cosystĂšme breton ; - Le meilleur des deux mondes : L'esprit "startup" d'une crĂ©ation d'agence avec la force et l'expertise d'un grand groupe tech. Notre seul critĂšre : Ton expertise, ta curiositĂ© et ton envie de contribuer Ă  cette nouvelle aventure. đŸŒ± Comment nous accompagnons ton parcours : - Suivi de proximitĂ© : Des points mensuels avec ton management (qui parle le mĂȘme langage technique que toi) ; - Apprentissage continu : Des formations et certifications dĂšs ton arrivĂ©e pour rester Ă  la pointe ; - IA First : L’accĂšs Ă  RAISE, notre propre plateforme d’IA gĂ©nĂ©rative. 📈 Quelles perspectives dans une agence qui dĂ©marre ? En Ă©tant lĂ  dĂšs le dĂ©but, les possibilitĂ©s d'Ă©volution sont multiples et rapides : - Recrutement : Participer activement Ă  la croissance de l'Ă©quipe rennaise ; - Rayonnement : Devenir le visage de SFEIR lors des Meetups et confĂ©rences locales (BreizhCamp, etc.) ; - Expertise : Prendre des rĂŽles de Staff Engineer ou d'Engineering Manager Ă  mesure que l'agence grandit. 💰 RĂ©munĂ©ration et Équilibre Salaire : À l’issue des PlayOffs (nos Ă©changes techniques), nous Ă©valuons tes compĂ©tences et ton potentiel pour te proposer une rĂ©munĂ©ration juste et adaptĂ©e. FlexibilitĂ© : Le tĂ©lĂ©travail est ancrĂ© dans notre culture, avec un mode hybride adaptĂ© Ă  la vie de l'agence. 👋 La suite des Ă©vĂ©nements Premier contact : Un Ă©change avec Justine Thiriet pour faire connaissance. Les PlayOffs : Une session de pair-programming avec trois Sfeirians autour de l'algorithmique, de Java et de Spring Boot SFEIR collecte vos donnĂ©es Ă  caractĂšre personnel afin de traiter votre candidature. Pour en savoir plus sur la gestion de vos donnĂ©es personnelles et pour exercer vos droits, nous vous invitons Ă  consulter notre Politique de confidentialitĂ©. ## About SFEIR ## Company Overview - **One-liner**: SFEIR is an AI Engineering consultancy of 850+ engineers that helps organisations move from marginal gains to 10x with AI-driven software production, context engineering and the Agentic Conversational Enterprise. - **Entity Type**: Private (bootstrapped; no external funding disclosed) - **Headquarters**: Neuilly-sur-Seine, France - **Founded**: ~2005 (over 20 years of continuous innovation) [sfeir.com](https://www.sfeir.com/en/company/) - **Founders**: Not publicly available ## Core Business - **Primary industry**: Technology consulting / AI Engineering - **Target customers**: B2B, Enterprise (large organisations seeking AI transformation) - **Mission**: The “AI Only” vision – a 10x productivity strategy where engineers pilot AI, validate its output, and own architectural decisions [sfeir.com](https://www.sfeir.com/en/company/) ## Products & Services - **SFEIR Engineering**: Pure technical excellence – cloud, data, AI and software engineering. Builds the AI-driven systems for clients. [sfeir.com](https://www.sfeir.com/en/company/) - **WEnvision**: Strategic advisory, technology framing and thought leadership. Helps clients define and structure their transformation. [sfeir.com](https://www.sfeir.com/en/company/) - **SFEIR Institute**: Training delivered by practitioner experts. Certified training on Google Cloud, AWS, Microsoft, Kubernetes, and generative AI. [sfeir.com](https://www.sfeir.com/en/company/) - **RAISE (internal platform)**: The in-house generative-AI platform that gives the whole community access to the latest LLMs. [sfeir.com](https://www.sfeir.com/en/company/culture/) ## Market Standing - **Valuation/Market Cap**: Not disclosed (private company) - **Key Metric**: Annual revenue of 130 M€ (latest figure) [sfeir.com](https://www.sfeir.com/en/company/) - **Notable Investors/Partners**: None publicly listed (bootstrapped); partners likely include Google Cloud, AWS, Microsoft (based on certified training offerings) - **Growth Signals**: 850+ engineers across 8 offices in France and Benelux; structured “AI Champions” programme ensuring 100% of consultants master generative AI; continuous hiring across software, cloud, data and AI roles [sfeir.com](https://www.sfeir.com/en/careers/) ## Competitive Advantages - **AI Only focus**: Entirely dedicated to AI-driven engineering – not a generalist consultancy. Every consultant is trained and deployed on generative AI. - **Augmented Engineer model**: Engineers write 80% less boilerplate code but own architecture, security, and business relevance. AI handles mechanics; humans drive value. - **Collective intelligence**: 850+ engineers with internal events every week, dozens of thematic communities, and a culture of test-and-learn. No one is alone on a hard problem. - **Skills‑based organisation**: Career progression defined by real skills (up to 13 per role), not by title. Two parallel tracks: Individual Contributor (Staff, Principal, Senior Principal) and Engineering Manager. - **PlayOffs hiring process**: Half-day pair‑programming with three Sfeirians – candidates assess the company as much as they are assessed. No timed quizzes or whiteboard riddles. ## Strategic Focus - **AI‑driven transformation**: Helping clients move from marginal gains to 10x productivity through generative AI, context engineering, and the Agentic Conversational Enterprise. - **Continuous upskilling**: 100% of consultants go through the AI Champions programme; internal RAISE platform provides access to latest LLMs; SFEIR Institute delivers certified training. - **Scaling the tribe**: Expanding engineering headcount across France and Benelux, with new roles published weekly in software, cloud, data, AI, and architecture. ## Why Work Here - **Culture**: A “tribe” of engineers where real skill outranks the job title. Flat hierarchy, managers who still code, and five values: kindness, inclusiveness, excellence, freedom, responsibility. [sfeir.com](https://www.sfeir.com/en/company/culture/) - **Remote/Hybrid/Office**: 8 offices across France and Benelux; the hiring process is on-site (half-day PlayOffs), indicating a strong office‑centric culture, though flexible arrangements may be available on a per‑project basis (not explicitly stated). - **Notable perks**: Permanent learning (SFEIR Schools, certified training, RAISE platform); strong support for personal branding (writing on sfeir.dev, speaking at conferences like Devoxx, DevFest, Google I/O); no sales targets – only tech level and tech culture count. - **Engineering culture**: Pair‑programming hiring, AI‑first tooling (Claude Code, Cursor, LangGraph, Gemini Enterprise), and a promise of lasting employability through continuous skill evolution. ## Sources 1. [sfeir.com – Company overview](https://www.sfeir.com/en/company/) 2. [sfeir.com – Careers](https://www.sfeir.com/en/careers/) 3. [sfeir.com – Open roles](https://www.sfeir.com/en/careers/jobs/) 4. [sfeir.com – Culture](https://www.sfeir.com/en/company/culture/) 5. [sfeir.com – Hiring process](https://www.sfeir.com/en/careers/hiring-process/) ## Other roles at SFEIR - [📊 Data Engineer](https://feeny.ai/job/data-engineer-sfeir-bruxelles-qtmfw3kvjmxv) — Bruxelles, France - [⚙ Cloud/DevOps Engineer](https://feeny.ai/job/cloud-devops-engineer-sfeir-bruxelles-zwec0tjh5r1h) — Bruxelles, France - [🧠 AI Engineer](https://feeny.ai/job/ai-engineer-sfeir-bruxelles-spk3mxevm2jt) — Bruxelles, France - [AI Engineer](https://feeny.ai/job/ai-engineer-sfeir-strasbourg-mtg6sck1gjkg) — Strasbourg, France - [Senior Software Engineer Java-JS (F/H) - CrĂ©ation d'Agence](https://feeny.ai/job/senior-software-engineer-java-js-f-h-creation-d-agence-sfeir-rennes-qjzxxj0dwskc) — Rennes, France - [Senior Data Engineer (F/H) - Rennes](https://feeny.ai/job/senior-data-engineer-f-h-rennes-sfeir-rennes-fabrssn36hw8) — Rennes, France - [Senior Data Engineer (F/H) - Niort](https://feeny.ai/job/senior-data-engineer-f-h-niort-sfeir-niort-evd3b1jttzx4) — Niort, France - [GenAI Engineer (F/H) - Niort](https://feeny.ai/job/genai-engineer-f-h-niort-sfeir-niort-44bzydr3t5jh) — Niort, France - [Senior Software Engineer Java-JS (F/H) Niort](https://feeny.ai/job/senior-software-engineer-java-js-f-h-niort-sfeir-niort-vvtn455ahbvm) — Niort, France - [Lead Tech Java (F/H) - CrĂ©ation d'agence](https://feeny.ai/job/lead-tech-java-f-h-creation-d-agence-sfeir-niort-89s82hw3r16c) — Niort, France