Engineering Manager - Marketplace

Bigblue

📍 Paris | Full-time | Fluent 🇫🇷 & 🇬🇧   At Bigblue, we're building the logistics backbone for the next generation of commerce. Modern brands sell everywhere: through their own online stores, marketplaces, retail, social commerce, and more. Across every channel, customers expect the same fast, reliable, and transparent experience after they buy. What used to be Amazon's exclusive advantage is now becoming the standard for every ambitious brand. We're helping them get there. Since 2018, we've built a tech-driven fulfilment platform used by 600+ brands, including Muji, Aigle, Scuffers, and Cabaïa. With 200+ Bigbluers across the UK, France, Spain, and Germany, our proprietary tech stack, and a network of 9 warehouses and over 100,000 sqm of fulfilment space across Europe, we ship millions of orders every month. And we're nowhere near done! Backed by €20M+ in funding, we're expanding across Europe and building the operating system that will power modern commerce operations at a global scale. At Bigblue, we hold ourselves to a very high bar: in the quality of our product, the rigour of our operations, and the care we bring to every merchant we work with. You'll be working alongside talented people on real, high-impact problems, in an environment where high standards come with genuine support, ownership, and room to grow. If you want your work to matter from day one, you're in the right place.     Head of Engineering Location: Paris 9th, France Compensation: Base €110-150k + Options: €100-200k (gross value) You are an experienced people manager, team leader, and hands-on software engineer. You are passionate about simple solutions to complex problems, whether they are product or software. You thrive on growing and enabling people to have the biggest impact possible. You have designed and built complex and mission-critical products and systems, and have seen them scale from 1 engineer to one team and to multiple teams. You've been a consistent example of high standards, growth mindset, and teamwork for your entire team. As Head of Engineering, you will report to Mathias, our co-CEO, and work hand-in-hand with him and the Product team to grow the team from a flat structure to mission-defined teams. You will be responsible for all software delivery and for goal-setting for engineering. You will recruit, support, and scale our culture of product engineering, innovation, and pragmatism within Engineering.

Scaleway

OUR STORY:   🇪🇺 Join Scaleway and shape the sovereign cloud of tomorrow ! Since 1999, we have been designing secure, sustainable infrastructures aimed at supporting the most ambitious companies.   Historically known for our dedicated servers (Dedibox), we made a strategic shift to cloud computing in 2015. Staying true to our principles of simplicity, flexibility, and technical excellence, we have become one of the leading players in Europe in the sector.   With the rise of artificial intelligence, we have strengthened our commitment, supported by the Iliad Group, which is investing €3 billion to develop a serious, sovereign AI alternative to American and Asian giants.   Every day, thanks to our fast-growing portfolio of cloud and AI products (bare metal, containerization, serverless, AI, etc.), Scaleway proudly serves thousands of customer across the private and public sector, from corporations like France Télévisions or Hachette Livre, to fast-growing startups like Photoroom and Biolevate, to institutions like the City of Copenhagen.   📍 Our offices are located in Paris, Lille, Toulouse, Rennes, Rouen, Bordeaux and Lyon.   POURQUOI AVONS-NOUS BESOIN DE VOUS ? Notre croissance nous amène à renforcer notre équipe Compute pour construire et lancer notre nouveau projet de Marketplace. Votre mission sera d'être un contributeur clé du projet Marketplace côté Compute afin de fournir à nos utilisateurs et éditeurs un écosystème robuste d'images OS et d'applications packagées.   VOTRE FUTURE ÉQUIPE Nous travaillons dans un environnement collaboratif et international où la diversité des Scalers, alliée à un esprit de partage, permet de donner vie à de nouveaux projets chaque jour, faisant progresser nos ambitions ensemble. Vous ferez partie d'une équipe en cours de structuration pour "bootstraper" ce projet ambitieux. Vous évoluerez dans un environnement très transverse, en collaborant étroitement avec le Product Management (Marie Debard) et les équipes Core Engineering pour transformer cette vision en réalité.   VOTRE QUOTIDIEN Missions Concevoir et développer de nouvelles fonctionnalités pour la plateforme Marketplace Maintenir et optimiser les API pour garantir une expérience utilisateur fluide Créer et maintenir l'outillage pour la création d'images OS et le packaging système Créer et gérer les artefacts (applications packagées au sein des images) Automatiser le processus de fabrication des images OS et des conteneurs Accompagner et guider les éditeurs externes dans la création de leurs propres artefacts Garantir la sécurité et l'intégrité de tous les artefacts de la Marketplace (CI/CD, scanning) Participer à la structuration architecturale de nouveaux sujets techniques à forte croissance Collaborer avec les équipes transverses pour aligner les efforts d'ingénierie avec les objectifs produit Prendre possession de territoires techniques "inexplorés" pour stimuler l'innovation   À PROPOS DE VOUS HARD SKILLS : 5 à 10 ans d'expérience en ingénierie logicielle ou administration système Forte maîtrise de Go ou Python pour le développement d'API Expérience pratique avec Packer et la maintenance d'images OS Connaissances avancées en administration système Linux Expérience avec les conteneurs (Docker, Kubernetes) et PostgreSQL Maîtrise des pipelines CI/CD et de la sécurité des artefacts Familiarité avec Protobuf et les architectures microservices SOFT SKILLS : Polyvalence : Capacité à basculer entre les tâches système, dev et automatisation Autonomie : Grand esprit d'initiative dans un environnement "à construire" Résolution de problèmes : Envie d'explorer et de structurer de nouveaux sujets techniques complexes Collaboration : Capacité à travailler efficacement sur un projet transverse et multi-équipes Adaptabilité : Ouverture à l'apprentissage et à l'évolution selon les besoins du projet   CE QUE VOUS TROUVEREZ CHEZ SCALEWAY ++++ Télétravail hybride : Nous offrons jusqu'à 3 jours de télétravail par semaine. Bureaux : Nos bureaux sont des espaces de travail spacieux et dynamiques au design audacieux, idéalement situés près des transports en commun. La plupart de nos sites disposent d'espaces extérieurs (terraces) et de parkings à vélos. Restauration : Notre chef propose un service de repas sains au siège, et le petit-déjeuner est offert sur tous nos sites toute l'année. Les Scalers travaillant sur les sites régionaux bénéficient d'une carte Swile pour leurs déjeuners. Engagements bien-être : Qu'il s'agisse de l'accès à une salle de sport, de places en crèche ou de services d'aide aux aidants, Scaleway s'engage à soutenir les Scalers dans leur équilibre de vie. Environnement international : Avec des dizaines de nationalités, Scaleway offre un environnement stimulant où l'anglais est aussi pratiqué que le français. Carrière & Mobilité :Nos managers valorisent la mobilité interne, et des opportunités de transition vers d'autres entités du Groupe Iliad sont accessibles à tous les Scalers.   🚀 Pourquoi rejoindre l'aventure Scaleway ? ✔ Une offre produit riche et diversifiée : Scaleway propose plus de 100 produits de cloud public en IaaS, PaaS et IA. ✔ Un environnement technique de pointe : Scaleway fournit des infrastructures modernes, incluant des serveurs bare metal haute performance, pour relever des défis techniques passionnants. ✔ Engagement pour un cloud responsable : Scaleway s'engage pour un cloud plus responsable, avec des datacenters alimentés uniquement par des énergies renouvelables depuis 2017, minimisant notre empreinte écologique et détenant des certifications de haut niveau.   🔜 LA SUITE DES ÉVÉNEMENTS … Appel de découverte avec un recruteur (30 min) Test technique / Use Case pour comprendre vos compétences techniques et votre approche du poste (45 min) Entretien technique avec un expert de l'équipe pour valider votre expertise (1h) Entretien manager  pour approfondir les échanges et évaluer votre adéquation avec l'équipe (45 min) Entretien RH final incluant une visite des bureaux pour rencontrer vos futurs collègues

Doctolib

YOUR IMPACT We are looking for a Senior Machine Learning Engineer to join the ML Engineering team in Patient Solutions. Your mission will be to improve how people access quality care and manage their health over time by building and leading AI and ML systems that create real, measurable impact. You will work in a feature team developing intelligent patient-facing solutions, from smart practitioner discovery to long-term care management, playing a key technical role in shaping how we scale our AI capabilities across Europe. Working in the tech team at Doctolib means building innovative products and features to improve the daily lives of care teams and patients.   WHAT YOU'LL DO Your responsibilities include but are not limited to: * Design and implement ML and AI solutions aligned with patient product goals, covering search, retrieval, and personalized care pathways * Build and maintain large-scale retrieval pipelines, including hybrid search, embedding systems, vector databases, and multi-stage re-ranking architectures * Develop, fine-tune, and evaluate LLM and VLM models using techniques such as knowledge distillation, Mixture-of-Experts (MoE) architectures, and prompt engineering * Build and orchestrate agentic AI systems, integrating external data and capabilities through tools and MCP-based integrations * Define metrics aligned with product goals, run controlled end-to-end experiments using W&B, MLFlow, or Braintrust, and communicate findings to guide product and technical decisions * Deploy solutions to production in collaboration with our ML platform team, ensuring reliability, observability, and performance at scale, and act as a technical reference to elevate the team's standards and practices   WHO YOU ARE Before you read on: if you don't have the exact profile described below, but you feel this job description matches your skill set, we still encourage you to apply.   You'll be a great fit if you: * You have 7+ years of experience in Machine Learning, Deep Learning, or AI Engineering, with a strong track record of taking models from prototype to production at scale * You have strong experience in Information Retrieval and modern retrieval stacks: hybrid search (sparse + dense), large-scale embeddings and vector databases, multi-stage retrieval and re-ranking pipelines, RAG architectures, and tool/MCP-based integrations * You are proficient in LLM and VLM application development: fine-tuning, MoE architectures (via LiteLLM or Model Garden), knowledge distillation, prompt engineering, and systematic benchmarking of LLM/VLM systems * You have hands-on experience building and orchestrating agentic AI systems (e.g., using ADK) * You demonstrate strong scientific rigor: designing metrics aligned with product goals, running controlled experiments, and communicating results clearly to both product and engineering stakeholders * You have experience operating large-scale applications in production (monitoring, reliability, performance, observability), bring strong analytical skills, and approach your work with a user-first mindset. You are fluent in English   It would be fantastic if you: * Have experience in B2C marketplace environments * Have experience in other ML methodologies: pattern mining, recommendation systems, experimentation, or causal inference   LIFE AT DOCTOLIB TECH * Our solutions are built on a single fully cloud-native platform that supports web and mobile app interfaces, multiple languages, and is adapted to country and healthcare specialty requirements. * Our stack is composed of Rails, TypeScript, Java, Python, Kotlin, Swift, and React Native. * We leverage AI ethically across our products to empower patients and health professionals. Discover our AI vision here. Want to learn more about our tech culture and environment? Visit the Doctolib Tech site.   WHAT WE OFFER * Free comprehensive health insurance (basic package) for you and your children * 25 days of paid vacation per year, plus up to 14 days of RTT * Free mental health and coaching services through our partner Moka.care * Work from abroad for up to 10 days per year thanks to our flexibility days policy * Lunch vouchers (Swile card) worth €8.50 per working day, with €4.50 covered by Doctolib * A subsidy from the work council to refund part of the membership to a sport club or a creative class * 50% reimbursement of your public transport subscription * ParentCare Program: Enjoy full salary coverage (100%) during your first month of birth leave, and 75% during the second, covered by Doctolib * Enrollment in Doctolib's long-term employee value sharing plan called DoctoGrowth * For caregivers and workers with disabilities, a package including an adaptation of the remote policy, extra days off for medical reasons, and psychological support * Relocation support in case of international mobility * Access to the best AI tools for coding, development and dedicated training   OUR INTERVIEW PROCESS * Recruiter Interview * Feature Building Interview * System Design Interview * Behavioral Interview * At least one reference check We want your experience to be clear, respectful, and transparent. Learn more about our hiring process on our candidate experience page.   JOB DETAILS * Permanent position * Full-time * Location: Doctolib Paris office in Levallois-Perret * Hybrid work setup (3 days/week in the office) * Start date: as soon as possible   WE WELCOME EVERYONE At Doctolib, we are committed to improving access to healthcare for everyone. This translates into our recruitment process. We evaluate candidates based solely on qualifications and motivation, without any form of discrimination. The more diverse ideas are heard, the more our product will truly improve healthcare for all. You are welcome to apply to Doctolib, regardless of your gender, religion, age, sexual orientation, ethnicity, or disability. To ensure equal opportunities, we invite you to exclude personal information (e.g., pictures, age) from your applications. If you require any accommodation, please let us know for support during the hiring process. Join us in building the healthcare we all dream of!   YOUR DATA PRIVACY All information provided is processed by Doctolib for application management. For data processing details, click here: France. Please contact hr.dataprivacy(at)doctolib.com for inquiries or to exercise your rights.