Software Engineer Jobs in Hauts-de-France, France

REDAPL Graph Engine team at Datadog builds the core platform that tracks customers’ infrastructure resources and relationships, powering Cloud Security Posture Management, Cloud Cost Management, and Service Catalog. As a Senior Engineer you design and implement a high‑performance query engine for relationship traversals, lead architectural decisions, and collaborate with product teams to scale the platform.

Software Engineering team at Thales Elancourt develops embedded software for the SPECTRA electronic protection system on the Rafale aircraft. The manager leads a 10+ engineer Agile team, overseeing specification, development, integration, validation and technical support while ensuring cost, schedule and quality targets.

Zefir’s Engineering Team builds an AI autopilot for home sales in Europe, orchestrating brokers, portals, and documents end‑to‑end. As a Software Engineer you develop high‑performance APIs with Node.js/TypeScript, build React/Next front‑ends, and integrate LLM‑driven features using Pinecone and Langchain.

Joko, a Paris‑based tech company, empowers consumers with AI‑driven shopping tools and is expanding globally, especially in the US. They seek a Software Engineer to own end‑to‑end projects across product and operations, designing scalable systems, building AI assistants, improving fraud detection, and mentoring juniors. The role demands strong analytical and coding skills, rapid learning, and an entrepreneurial mindset.

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.

Harmattan AI is a defense prime building autonomous and scalable defense systems, and is expanding its multidisciplinary Gimbal team in Paris. As a Software Engineer, you will take ownership of gimbal control and GNC software running on custom hardware platforms and embedded Linux/microcontrollers, driving developments from concept to full realization.

Scaleway seeks a Software Engineer to join its Cloud Product Engineering team, designing and building core IaaS and PaaS components that power sovereign cloud services across Europe. The role involves creating new cloud products from scratch, enhancing existing services, improving test coverage, and documenting APIs.

Harmattan AI builds autonomous defense systems for allied forces. The Software Engineer - Validation develops hardware benches and software pipelines that let the validation team scale testing from one to hundreds of drones, integrating physical tests into CI/CD and automating log analysis.

REDAPL Graph Engine team at Datadog builds the core platform that tracks customers’ infrastructure resources and relationships, powering Cloud Security Posture Management, Cloud Cost Management, and Service Catalog. As a Senior Engineer you design and implement a high‑performance query engine for relationship traversals, lead architectural decisions, and collaborate with product teams to scale the platform across multiple regions.

Google offers Software Engineering and Site Reliability Engineering internships across EMEA for students in their penultimate or final year of a Bachelor's or Master's degree in Computer Science or a related technical field. Interns work on specific projects critical to Google's needs, designing, testing, deploying, and maintaining software solutions or hardening business-critical systems through code-level troubleshooting, monitoring, and automation.

Dust seeks an experienced frontend engineer to craft engaging, high‑performance user interfaces in React and TypeScript while also contributing to backend REST APIs with Next.js. The role blends design collaboration, accessibility, and performance optimization with a full‑stack perspective. Candidates will lead frontend projects, maintain a design system, and ensure code quality across the codebase.

VusionGroup is a fast-growing retail tech company and global leader in physical commerce digitalization, operating across 19 countries on 3 continents. The Senior Software Engineer, reporting to an Engineering Manager, designs and builds robust, scalable backend services for the company's data platform, contributes to architectural decisions (DDD, hexagonal architecture, event-driven systems), collaborates with product teams to translate business needs into technical solutions, and ensures code

Software Test Engineer at Robeaute responsible for verification and validation of clinical software for microrobotic brain therapies, ensuring safety, reliability, and regulatory compliance across embedded, front-end, and back-end systems.

Portless Logistics Platform, a cutting‑edge supply‑chain tech company, is looking for a Senior Software Engineer to lead the design and implementation of scalable, high‑performance architectures. The role involves driving technical strategy, mentoring engineering teams, and collaborating with product and stakeholders to deliver innovative solutions that keep Portless at the forefront of logistics innovation.

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.

Joining Razer will place you on a global mission to revolutionize the way the world games. Razer is a place to do great work, offering you the opportunity to make an impact globally while working across a global team located across 5 continents.

Alpic is building the infrastructure to power the new agentic web, an all‑in‑one MCP hosting platform that enables AI‑native workflows. As a Senior Software Engineer you will work directly with the founders to design and ship core platform features, iterating quickly to launch the first commercial MCP servers for B2C and SaaS brands.

Quantis Digital Team builds cloud‑ready software that helps companies measure and reduce environmental impact. As a Senior Software Engineer you will design, develop, and release digital products using Java, Python, JavaScript, PostgreSQL, Docker, and Terraform while collaborating with sustainability experts and a small agile team.

Growth Software Engineer at Joko drives user and business growth through code. Working with Product, Marketing, Data, and Business teams, you design, build, and ship experiments across onboarding, retention, and engagement to impact key metrics.

AI-Modernisation – Software Engineering team at Theodo builds AI‑enhanced solutions to modernise legacy systems for clients like Qonto and Doctolib. As Lead Software Engineer you will design scalable architectures, drive delivery quality, mentor engineers, and integrate LLM‑based tools to accelerate development.