Top Software Engineer Jobs in France

Join a team of engineers to work on a complex codebase while utilizing MongoDB, Node.js, and Vue.js. Responsibilities include developing and improving functionalities, collaborating within squads, and onboarding new engineers.

As a Website Software Engineer, you will develop and optimize website features, support marketing initiatives, and contribute to architectural decisions while working with a creative team.

Port SoC/subsystem RTL to FPGA, HAPS, and ZeBu platforms; enable early firmware/boot bring-up; develop low-level embedded software and drivers; debug hardware/software integration and timing issues; create pre-silicon validation tests; and integrate prototyping platforms into CI/CD while collaborating across hardware and software teams.

Build end-to-end full-stack AI features on a Ruby on Rails backend and React frontend, design and run experiments (A/B tests and AI evaluations), implement AI infrastructure for reliable LLM inference, and iterate quickly to scale production-ready LLM-powered products.

Build and ship full‑stack web features and microservices for a cloud‑native genomics platform. Lead design and code reviews, mentor engineers, and develop production LLM applications (RAG, evaluation, citations) using managed endpoints and containerized CI/CD deployments. Collaborate with Product, QA, and Architecture to deliver reliable, regulated healthcare software.

Design and build scalable serverless solutions on GCP using Node.js, React and Next.js. Map large PIM datasets to retailer formats, own microservices and deployments, champion TDD and observability, mentor engineers, and collaborate cross-functionally to deliver customer-focused sales enablement tools.

Lead organization-wide software and AI engineering strategy, design scalable cloud-native systems, drive deployment and data integration best practices, and deliver rapid prototype-to-production solutions. Own LLM and ML strategy including model fine-tuning, RAG, AI evaluation, and observability. Mentor technical leaders, shape developer experience and knowledge management, and represent engineering at executive and industry levels.

Hands-on senior full-stack engineer for eFront Invest (BlackRock Aladdin). Design, implement, and maintain cloud-deployed .NET features; improve platform architecture, CI/CD, testing, monitoring, and incident investigations; diagnose and modernize legacy components; collaborate with global engineering, product, and QA teams to ensure data quality and operational reliability.

Design, develop, and maintain robust APIs and backend services while collaborating with teams to align architecture and fast-paced product strategy.

The Software Engineer will design, develop, and maintain backend APIs, enhance backend architecture, and collaborate on B2B solutions while ensuring performance and scalability.

Lead design and development of low-level Linux instrumentation and eBPF-based runtime security features for detection, monitoring, and workload protection. Drive architecture, implement performance-sensitive systems, establish testing methodologies, deliver end-to-end features, and provide technical leadership and cross-team collaboration across Datadog's security products.

Lead design and development of low-level Linux instrumentation and runtime security using eBPF and kernel APIs. Build reusable monitoring for process, file, and network visibility, ensure performance and reliability, drive feature delivery and testing, and provide technical leadership across product and engineering teams.

As a Backend Software Engineer, you'll design scalable backend systems, optimize database performance, and collaborate with front-end and DevOps teams.

Contribute to Juju's development, collaborate with teams on distributed systems, debug issues, and enhance cloud automation features.

Join a small agile full-stack team building cloud-native applications to accelerate medicine manufacturing and supply. Design, deliver, and run scalable, maintainable microservices; translate requirements into performant code; own technical decisions; apply CI/CD and DevOps practices; use IaC for cloud deployments; collaborate with product and data teams and promote engineering best practices.

Develop and optimize algorithms for battery and renewable energy projects, analyze market data trends, and ensure algorithm performance.

The Software Engineer will design and develop software architectures, solve complex challenges, lead technical directions, and collaborate with different teams to optimize efficiency and impact.

As a Staff Mobile Engineer at Joko, you will lead mobile application development using React Native, focusing on scalability, performance, and user experience while collaborating with cross-functional teams.

Design, build, and evolve a scalable aggregate system to accelerate query performance across cloud data platforms; architect prediction/selection logic for aggregates; optimize maintenance, scheduling, and reliability at scale while collaborating with query planning and platform teams.

As a Software Engineer for Internal Tools at Prelude, you will design and build internal tools, develop AI workflows for automation, and collaborate with various teams to streamline operations and improve productivity.

Build and maintain DataDome's client-side JavaScript Tag and server-side integration modules for edge runtimes and backend platforms. Own integration components across multiple languages, improve CI/CD, testing, performance and security, mentor engineers, support onboarding and incident response, and drive technical direction for integrations.

Design and implement backend trading services, own features end-to-end (schema, API, tests, UI integration), contribute to real-time infrastructure and client-facing APIs, and write integration tests against real dependencies.

Software Engineers at QuantCo will design and develop scalable solutions, integrate models into client businesses, and improve products based on client feedback.

As an Ubuntu Core Software Engineer, you will design and implement features for the embedded Linux operating system, maintain boot mechanisms, debug system-level issues, and collaborate with a global team.

Design, develop, and maintain software applications, write efficient code, collaborate with teams, conduct testing, and provide technical support.