Emplois de senior backend engineer – Paris

Join a team building a platform designed to connect users through innovative digital experiences. They develop consumer-facing software and mobile applications, emphasising user engagement, testing and iterative design. The team operates globally and is backed by leading investors that believe in their mission to reinvent the future of social...

Sunday is building the fastest, simplest way to pay in restaurants. We are seeking a Senior Backend Engineer to join the 3rd-party POS Integrations team, focusing on the platform layer that standardizes how Sunday interacts with the POS ecosystem.You’ll own backend design and occasional front-end fixes, collaborate across product and support, and help ship...

Onyx-Conseil recherche un expert backend pour concevoir l’architecture des agents autonomes et les systèmes distribués au sein du Centre d’excellence. Vous définirez les interfaces, les microservices asynchrones et les flux de données, en assurant une intégration fluide avec les outils LLM et les environnements d’IA d’entreprise.Le poste demande...

Vocca in Paris is hiring a senior backend engineer to own the core platform built with TypeScript/Node.js. You will unify the booking layer across multiple software vendors and ensure reliable operation for millions of calls.We value strong backend design, experience with clinic integrations, and the ability to shape architecture and squad workflows in a...

Vibe is building a first-class Developer Platform by exposing its capabilities as a public API. You’ll lead integration projects in collaboration with external partners, shaping data contracts and scaling production-grade connections from CRMs to data partners.Located in Paris, you’ll own the Integrations stack, drive architectural decisions, and guide a...

Vibe in Paris is seeking a Senior Backend Engineer to own integrations and the developer platform, shaping scalable API endpoints and data contracts for external partners. You’ll drive architecture, mentor engineers, and collaborate across two continents while leveraging AI-augmented development.You’ll work in a hybrid setup with health insurance, meal...

Allphins, une insurtech dynamique et en croissance, recherche un Software Engineer Back‑End pour renforcer notre plateforme SaaS destinée aux (ré)assureurs. Vous concevrez et optimiserez des APIs et des pipelines de données en utilisant Python/Django, et travaillerez en collaboration avec Product Managers, Data Scientists et les développeurs...

EngineersOfAI is seeking a Senior Backend Engineer for the Dashboard Platform team in Paris. This role focuses on infrastructure automation to empower developers at Algolia to better serve customers. Key responsibilities include contributing to operation and deployment, taking ownership of developer experiences, and sharing best practices.The ideal candidate...

Vizzia is seeking a backend engineer to own significant portions of both edge and cloud backends for its safety products. You’ll work on camera communication, local storage, and CI/CD tooling, while shaping the cloud APIs and data layer. The role emphasizes reliability, GDPR compliance, and rapid incident response.You will join a small, senior team in...

Safran.AI à Paris cherche un Senior Backend Software Engineer expérimenté pour construire et faire évoluer nos services back-end et nos pipelines data. Vous serez intégré(e) à une équipe de 7 développeurs et travaillerez sur des architectures scalables avec Python/FastAPI et React.Vous concevrez des solutions robustes, assurerez la qualité du code,...

Escape is seeking a Senior Backend Engineer in Paris to join a security-focused team. You will translate research into production-grade scanning systems, focusing on agentic testing, AI-driven enhancements, and scalable, cost-efficient infrastructure.You will work across Python and Go, running containerized workloads on Kubernetes, and collaborate with...

Nous recherchons un-e Développeur-se Backend Senior passionné-e par la conception de systèmes scalables, l'architecture d'API robustes et l'amélioration de l'infrastructure cloud. Il s'agit d'un poste technique clé pour une personne qui ne se contente pas d'exécuter des tâches, mais qui pense de manière systémique, c'est-à-dire capable d'identifier...

Spendesk is seeking a Senior Software Engineer to join the Wallet squad within our Payment Groups, driving reliable, scalable financial services for finance teams. The role is backend-heavy (about 70% backend, 30% frontend) and involves ownership from discovery through deployment across international, multi-entity use cases.You will shape squad directions,...

Mambu Payments (formerly Numeral) is hiring Senior Backend Software Engineers to build secure, high-performance banking and payments software. You will own architecture for distributed backend systems, mentor engineers, and drive technical roadmaps in a fintech SaaS environment.Join a high-velocity team focused on scalable APIs, interoperability, and...

Roundtable in Paris is seeking a Senior Full-Stack Engineer to join its high-performing team. In this role, you will build the infrastructure for private equity, ensuring precision and reliability in financial operations. You should have at least 5 years of experience with Node.js and TypeScript, and be driven by quality and excellence. The position offers a...

Spendesk is seeking a Senior Software Engineer to join the Wallet squad within the Payments group. You will own backend services for wallet accounts, deposits, balances, and payment flows, while shaping the technical direction of the squad.You will work across the full feature lifecycle, collaborate with Product and Design, and contribute to scalable,...

Kolecto, fintech du Groupe Crédit Agricole, recherche un Senior Backend Software Engineer pour renforcer son équipe à Paris. Vous développerez des solutions backend robustes en Typescript et Node.js, sur des environnements cloud (AWS/Azure/GCP) et une architecture serverless.Vous encadrerez des développeurs et travaillerez en mode hybride avec...

BlaBlaCar is seeking a Confirmed Backend Engineer to join the Care team responsible for Phoenix back-office system. You will design, build, and operate backend services enabling customer relations and data flows across train, carpool, and bus lines.You will work with a small multi-stack team and collaborate with CRT and product managers to deliver robust,...

A leading technology firm in Paris is seeking an experienced Senior Backend Engineer to develop and enhance their AI-driven SaaS solutions. You'll join a dynamic team, focusing on backend software development in Python, improvement of cloud operations on AWS, and automated testing. Ideal candidates have a minimum of 5 years of experience and proficiency in...

Mayday recherche un Senior Back-end Engineer pour concevoir et faire évoluer le backend de notre plateforme RAG, avec ownership sur l'architecture et la production.Vous travaillez avec Python, FastAPI et Elasticsearch, Celery et RabbitMQ; Temporal est introduit pour orchestrer des workflows durables. Cadre hybride avec 2 jours de télétravail/semaine et...