Software Developer Jobs in Pays de la Loire, France

Software Engineer – Hardware Development at Scaleway. Join a team of 6 in Paris, Lille, Toulouse, Rennes, Rouen, Bordeaux, Lyon.

ALTEN is an international engineering and innovation leader collaborating with major industrial and technological players for over 30 years. In the Cholet (Défense sector) team, you will develop embedded software solutions for strategic systems, focusing on real-time C/C++ and Python applications, integration and validation in constrained environments, and continuous improvement of development processes.

Web Scraping team at NielsenIQ builds and maintains a fleet of crawlers for large‑scale data collection. The Software Engineer develops, optimizes and documents Python/Scrapy crawlers, adapts to site changes and anti‑bot protections, and contributes to the new ingestion engine.

Compute Marketplace team at Scaleway builds a robust ecosystem of OS images and packaged applications for users and publishers. The Software Engineer designs and develops new marketplace features, maintains APIs, automates OS image creation with Packer, manages artifacts, ensures security via CI/CD and scanning, and collaborates with Product Management and Core Engineering across Paris, Lille, Toulouse, Rennes, Rouen, Bordeaux, and Lyon in a hybrid model.

Datadog is a leading SaaS platform that empowers engineers to monitor, troubleshoot, and secure their systems at scale. As a Senior Software Engineer, you will tackle high‑volume challenges, design scalable solutions, and collaborate across teams to deliver reliable features.

LogiSync Embedded Systems team designs and builds mission-critical firmware for industrial, aerospace, and IoT equipment. The Embedded Software Engineer develops C/C++ firmware, drivers, and RTOS-based applications, brings up hardware, debugs devices, and collaborates with hardware, mechanical, and systems engineers.

Ippon Technologies, a French consulting firm, seeks a Software Engineer to join its Nantes agency. The role blends agile development across front‑end and back‑end stacks—Java/Spring, Node.js, Python, Angular, Vue, React—while contributing to CI/CD pipelines, TDD/BDD practices, and architectural decisions.

Software Engineer on Scaleway’s Non-Relational Database team, building and scaling Redis and MongoDB products for sovereign cloud regions. Day‑to‑day work includes Kubernetes cluster management, Helm/ArgoCD deployments, GoLang coding, Terraform IaC, and performance tuning.

Speechify’s Platform team builds and maintains backend services powering text‑to‑speech, payments, analytics, and subscription APIs. As a Software Engineer, you’ll design, develop, and optimize robust APIs, oversee the backend landscape, and collaborate on B2B solutions for enterprise clients.

Support engineer responsible for technical support, software environment preparation, testing, client assistance, pre-sales, training, and prospecting studies. Works on industrial projects, manages licenses, prepares training setups, conducts tests, reports bugs, and contributes to training materials.

Développement team at NielsenIQ builds data platforms for the retail sector, turning millions of product, price and promotion data points into actionable insights. The role designs, evolves and optimizes SQL Server databases, writes complex stored procedures, and ensures high‑performance data pipelines while collaborating with Front‑End teams on API access.

NielsenIQ's Development team builds modern web applications for retail data analysis. The Senior Front-End Engineer will design and implement high‑performance UI components, collaborate with business teams to translate requirements, and contribute to occasional .Net back‑end work.

Datadog Security Libraries team builds customer‑side integrations for runtime security products, enabling real‑time vulnerability monitoring across .NET, Java, Go, Node.js, Python, Ruby, and PHP. The senior engineer designs and builds security detections, takes prototypes to production‑hardened libraries, and owns their operational health. Work is based in Bordeaux, France; Lyon, France; Madrid, Spain; Nantes, France; Paris, France; Sophia Antipolis, France with an on‑site model.

Engineering – Back-End at SFEIR Rennes builds modern full‑stack applications and cloud‑native services. The role designs and implements Java 21/Spring Boot back‑ends, creates rich Angular or React front‑ends, and contributes to API design, micro‑service architecture, and generative AI tooling.

Network Connectivity Automation team at OVHcloud builds cloud‑native APIs that let customers provision and manage network resources across data centers. Senior Software Engineers design, develop, test and ship scalable Go micro‑services, leveraging AI tools to accelerate development while ensuring code quality and robustness.

SFEIR seeks a Java Software Engineer to join its Nantes team, blending on‑site collaboration with flexible remote work. The role focuses on building robust web and mobile applications, designing future‑proof cloud and data architectures, and driving AI innovation through tools like RAISE.

Core Experiences Team at Speechify builds foundational services and SDKs powering the product across platforms. As a Senior Software Engineer, you design clear, reliable APIs and efficient abstractions to improve loading speed and parsing intelligence.

Speechify’s iOS Core Product team builds the #18 productivity app that turns PDFs, books, and web content into audio for millions of users worldwide. The role focuses on shipping production code, enhancing a complex architecture, and shaping product decisions in a fast‑paced, distributed environment.

Software Enablers team at OVHcloud builds high‑performance virtualized network functions for the cloud. The role develops and optimizes dataplane software, maintains existing code, and integrates solutions across OVHcloud's ecosystem.

Speechify’s AI Data team builds petabyte‑scale audio datasets to train next‑generation text‑to‑speech models. The Software Engineer scours new audio sources, ingests them into a GCP pipeline managed with Terraform, and collaborates with scientists to optimize cost, throughput, and quality.