Software Engineer Jobs in Hauts-de-France, France

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.

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.

Razer’s Haptic Engine team drives the evolution of Interhaptics haptic technology, delivering high‑performance, real‑time feedback for next‑generation gaming devices. The role focuses on designing, building, and optimising core engine components, owning features from architecture to deployment, and collaborating with hardware, platform, SDK, and experience teams across desktop, mobile, and console platforms.

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.

AdManager at Vibe builds the client‑facing advertiser experience, enabling campaign setup, performance reporting, and creative management for streaming TV ads. The Senior Software Engineer will design and ship full‑stack features using Next.js, React, TypeScript and PostgreSQL, own initiatives end‑to‑end, and ensure reliability through monitoring and incident response.

Steelseries France – Gaming Software Team. Develops SteelSeries GG, a desktop app for millions of gamers, delivering new features across frontend and backend while ensuring code quality through tests and reviews.

The Flex – building the operating system for modern renting. As a Founding Software Engineer you will design and scale the Base360.ai platform, create AI‑powered automations, develop APIs and integrations, and own end‑to‑end delivery of cloud‑native services.

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.

Geometric Scene Understanding team at Harmattan AI builds real-time 3D battlefield visualization from live drone feeds. The Software Engineer will architect high‑performance pipelines, accelerate computer‑vision algorithms with CUDA/Vulkan, implement efficient 3D data structures, and translate research prototypes into production C++ code for resource‑constrained tactical hardware.

Tooling team at Harmattan AI builds a state-of-the-art drone simulator to support advanced autonomous defence applications. The role designs and develops flight simulation tools, defines architecture and integrates tooling into CI/CD pipelines while collaborating with GNC, ML and Embedded teams.

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.

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.

Ground Control Systems (GCS) team builds high‑performance Android‑based drone controllers for professional UAV missions, extending the open‑source QGroundControl platform. The Software Engineer designs, develops, and optimizes C++/Qt applications, integrates hardware controls, adds new features, and ensures cross‑Android compatibility and reliable deployments.

Base360.ai Platform – building the operating system for modern renting. The engineer designs and scales core services, APIs, and event‑driven automations that power bookings, pricing, payments and AI‑driven decision making.

Software Engineer role at Roland Berger’s Paris office focuses on building tools that boost consultant productivity and deliver custom SaaS solutions for clients. The position requires designing scalable architectures for large data volumes, prototyping emerging technologies, and ensuring system reliability.

Zefir, Europe's fastest‑growing real‑estate marketplace, seeks a Software Engineer to build high‑performance APIs and intuitive front‑end experiences. The role involves full‑cycle ownership of features, from design to deployment, using Node.js (TypeScript), Nest.js, GraphQL, React.js, and Next.js. Candidates will collaborate with product, operations, growth, and brand teams, write clean, test‑driven code, and implement end‑to‑end tests.

Data Engineering team at Artefact builds custom data platforms and AI-driven solutions for global clients. The Senior Software Engineer designs and implements robust backend services, integrates GenAI components, and architects cloud‑native infrastructures.

Platform Engineering at Prelude builds internal tools that power engineering, ops, sales, support, and finance. The role owns design, development, and maintenance of daily-use tools, builds AI‑powered workflows to automate repetitive processes, and evaluates new AI engineering tools.