Emplois de software engineer – Paris

Lemonway is a licensed payment institution at the heart of Europe's new digital economy.We secure payments for crowdfunding platforms, the collaborative economy, marketplaces and online retailers, with a strong commitment to fighting fraud and protecting funds.Regulated by the ACPR and benefiting from the European passport in 29 countries, Lemonway is based...

ResponsibilitiesDesign and develop ultra-high-performance backends using Python and FastAPIMaster and leverage the full potential of Anthropic models (Claude)Implement advanced RAG architectures and connect LLMs to company databases and APIsEnsure the maintainability, security, and performance of the code deliveredRequirementsAt least 4 years of experience...

Overview Applied AI Software Engineers work within small teams composed of Tomoro and client engineers to design, develop, and deploy AI applications, such as agents built on LLMs. As you gain experience and expertise in this role, you may lead these teams, drive end-to-end solutions, and advise clients on these topics. The applications we develop typically...

Senior Software Engineer I Paris Full-time Posted today fintechpayments Checkout.com is the employer — EngRadar is a job radar, not a recruiter. We track this posting from their own careers page and send you straight there; we never handle applications or CVs. Company Description We’re Checkout.com. You might not know our name, but companies like eBay,...

About H: When we released Holo4 on 28 September, we published every trajectory behind its public benchmark scores at trajectories.hcompany.ai. For OSWorld that's 369 desktop tasks, each run 3 times, with the steps, tokens and time of every attempt. This role builds and runs the evaluation framework that produces runs like these. H builds computer-use agents...

We are looking for a hands-on Senior Software Engineer to work on the architecture, development, integration, testing, and delivery of Rivercell's instrument operating platform—the software that controls the hardware, executes biological protocols, monitors device performance, manages failures, and ensures the traceable acquisition of experimental data.The...

Own the backbone of a platform processing tens of thousands of messages per second, with no room for downtime. Senior Backend Engineer - Real-Time Distributed Systems Paris, France · Permanent · On-site What you'd actually work on Designing and building highly available backend services for a real-time transactional platform Developing scalable...

Qube Research & Technologies (QRT) is a global quantitative and systematic investment manager, operating in all liquid asset classes across the world. We are a technology and data driven group implementing a scientific approach to investing. Combining data, research, technology, and trading expertise has shaped our collaborative mindset, which enables us to...

Mistral AI seeks strong Software Engineers with cybersecurity experience to build and productionise its cybersecurity product offering. You will turn cutting-edge prototypes into robust, scalable services powering both offensive and defensive security capabilities.Your work will enable Applied deployments at client sites while giving Science the...

Software Engineer C/C++ - F/H/N Au sein de votre équipe #OneTeam Rejoindre l’équipe Network, qui conçoit et développe les infrastructures critiques garantissant la connectivité et la sécurité du réseau mondial d’OVHcloud. Intégrer l’équipe Network Appliances, en charge du développement des solutions de mitigation anti-DDoS. Ces équipements...

Satelia développe un logiciel de télésurveillance médicale pour le suivi à distance de patients atteints d’insuffisance cardiaque. Pour accompagner notre croissance, notre monolithe PHP/Symfony historique est en pleine transition vers une architecture modulaire DDD. Un chantier d'architecture continu qui stimule le quotidien de l'équipe. Développer...

About Us Harmattan AI is a next-generation defense prime building autonomous and scalable defense systems. Following the close of a $200M Series B, valuing the company at $1.4 billion, we are expanding our teams and capabilities to deliver mission-critical systems to allied forces. Our work is guided by clear values: building technologies with real-world...

About UsHarmattan AI is a next-generation defense prime building autonomous and scalable defense systems. Following the close of a $200M Series B, valuing the company at $1.4 billion, we are expanding our teams and capabilities to deliver mission-critical systems to allied forces.Our work is guided by clear values: building technologies with real-world...

Job description Swan is looking for a Software Engineer to join its tech team of 70+ people for a specific project over a few months. The engineering team is the largest at Swan. It includes software developers, infrastructure, devops, QA, and security. Your mission You will be technically responsible for one or more projects. You will have the opportunity...

Qube Research & Technologies (QRT) is a global quantitative and systematic investment manager, operating in all liquid asset classes across the world. We are a technology and data driven group implementing a scientific approach to investing. Combining data, research, technology and trading expertise has shaped QRT’s collaborative mindset which enables us...

1 j/sem on-site + remote / Démarrage mi‑juin 2026 Contexte Notre client — éditeur SaaS international — construit une plateforme de calcul distribué GPU‑accelerated sur AWS. L’objectif : exécuter des workloads de calcul intensif sur des GPUs partagés en mode service, à grande échelle. Le projet est 100 % greenfield. Les choix...

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,...

OverviewAircall is a unicorn, AI-powered customer communications platform used by 22,000+ companies worldwide to drive revenue, resolve issues faster, and scale customer-facing teams. Aircall’s AI Voice Agent automates routine calls, AI Assist streamlines post-call work, and AI Assist Pro delivers real-time guidance to help people do their best work....

AboutSwan is Europe’s embedded banking specialist. We empower software companies to embed banking features like accounts, cards, and payments directly into their products, under their own brand. Swan processes over €1.5 billion in monthly transactions for more than 150 companies—like Pennylane, Indy, Agicap, Libeo, and Lucca. Founded in 2019, the...

We are looking for a product-minded Software Engineer to join our Customer Ops squad, with the role open in London, Paris or Barcelona. This is an opportunity for an engineer who enjoys working closely with Product and Design, understanding operational challenges and turning them into simple, reliable customer experiences. You will own features end to end,...