Backend Jobs in France

Proton

API Api Design CI/CD Cryptography Developer Experience +4 skills

Senior Backend Engineer (Foundation)

Europe, UKSenior

Join Proton and build a better internet where privacy is the default Proton was founded in 2014 by scientists from CERN on a simple truth: privacy is a fundamental human right . Since then, we’ve built the world’s…

Prelude

Backend Engineer (Go)

HybridEuropeFull-time

API Authentication DynamoDB gRPC Redshift +3 skills

About Prelude Prelude is redefining how companies authenticate and onboard users - turning what's traditionally a cost center into a growth lever. Our flagship product lets businesses send OTP codes with the best…

Proton

API C++ Cryptography PHP Rust +1 skills

Software Engineer - Back-End (Storage)

HybridEuropeFull-time

Join Proton and build a better internet where privacy is the default At Proton, we believe that privacy is a fundamental human right and the cornerstone of democracy. Since our inception in 2014, founded by a team of…

Photoroom

HybridEuropeFull-timeSenior

Senior Backend Engineer

Android API Datadog Django E-commerce +4 skills

About us Founded in 2019 and part of Y Combinator's 2020 cohort, Photoroom is the leading visual solution for e-commerce. We've raised Series B funding and reached 300+ million users worldwide, processing over…

HybridEuropeFull-timeSenior

Voodoo

2 months ago

Senior Backend Engineer (Golang) - Draft Showdown

Agile API Api Design Game Development Go +5 skills

About Voodoo Founded in 2013, Voodoo is a tech company that creates mobile games and apps with a mission to entertain the world. Gathering 800 employees, 7 billion downloads, and over 200 million active users, Voodoo…

RemoteEuropeFull-timeSenior

Voodoo

2 months ago

Senior Backend Engineer (Golang) - Castle Busters

Agile API Api Design Game Development Go +5 skills

About Voodoo Founded in 2013, Voodoo is a tech company that creates mobile games and apps with a mission to entertain the world. Gathering 800 employees, 7 billion downloads, and over 200 million active users, Voodoo…

Qonto

RemoteEuropeFull-timePrincipal

Principal Backend Engineer

Our mission and customers: We are creating the freedom for SMEs to succeed by delivering Europe's leading finance workspace with banking at its core, augmented by financial tools. We are proud to be rated 4.8 on…

Kestra Technologies

RemoteEuropeFull-timeSenior

Senior Backend Engineer, AI Orchestration

Agentic AI AI API Automation AWS +22 skills

About Kestra At Kestra, we’re on a mission to make orchestration and automation simpler for everyone. Our open-source platform helps teams manage complex workflows with confidence, and we’re already making a big impact…

White Circle

Product Engineer (Backend)

HybridEuropeFull-time

Actix Agentic AI AI Anthropic API +16 skills

TLDR: We're looking for a Product Engineer (Backend – Rust) to own and evolve the core systems that power AI safety at scale – building APIs that handle hundreds of millions of requests, real-time policy…

Outsight

Senior AI & Agentic Backend Engineer

On-siteEuropeSenior

Agentic AI AI Analytics Assembly AutoGen +7 skills

Outsight’s software solutions track the motion of people and vehicles using 3D LiDAR data. Operators of transportation hubs like airports and train stations but also sport venues, road infrastructures and industrial…

Veepee

Backend Developer (.Net Core) - Navigation team - Freelance (W/M/X)

HybridEuropeContractLead

A/B Testing Agile AI API Cassandra +13 skills

Pioneer of online flash sales since 2001 and key player in European e-commerce, Veepee collaborates with over 7,000 brands to offer highly discounted products available for a limited time. Operating across various…

amo

On-siteEuropeFull-timeSenior

Senior Software Engineer, Backend (Rust)

Analytics Android Backbone.js Cassandra C++ +9 skills

Looking for someone to join us as one of the early members of the Backend team. In the initial months, you'll be working closely with the team, gradually taking ownership of central components and features. Given…

Riot Security

Backend Engineer / Awareness Team

HybridEurope

AI Ai Enablement Automation AWS Claude Code +21 skills

We're a product-first team on a mission to raise the cybersecurity posture of every company in the world. Riot started with a simple idea: cybersecurity training was broken, and employees deserved better than…

Doctolib

Software Engineer II - Java/Python - Backend Platform Team (x/f/m)

HybridEuropeContract

AI Candidate Experience Cloud Cloud Native Datadog +7 skills

We are looking for a Mid level Java Software Engineer , with strong experience in Java and Spring Boot , to join Doctolib’s Platform team , ATP. The team builds the backend foundations that power our distributed…

Equativ

Back-End Engineer [Freelance]

HybridEuropeContract

Agile CI/CD Cloud C# Docker +4 skills

👫 About the team At Equativ, we’re on a mission to develop advertising technologies that empower our customers to reach their digital business goals. This means that we rely on massively scalable, widely distributed,…

BlaBlaCar

Confirmed Backend Engineer - Carpool Supply

HybridEurope

API Datadog Docker Git Java +2 skills

About BlaBlaCar BlaBlaCar is the world’s leading community-based travel app enabling 27 million members a year to carpool or travel by bus in 21 countries. Our team of 800 employees counts over 50 nationalities and is…

Air Apps

RemoteEurope, UKFull-time

Backend QA Engineer, Berlin

+2

About Air Apps At Air Apps, we believe in thinking bigger and moving faster. We’re a family-founded company on a mission to create the world’s first AI-powered Personal & Entrepreneurial Resource Planner (PRP), and…

AI API Automation Node.js PostgreSQL +6 skills

Air Apps

RemoteEurope, UKFull-time

Backend Engineer, Madrid

+3

About Air Apps At Air Apps, we believe in thinking bigger—and moving faster. We’re a family-founded company on a mission to create the world’s first AI-powered Personal & Entrepreneurial Resource Planner (PRP), and…

AI API Api Design Authentication AWS +17 skills

HybridEuropeFull-timeStaff

Vibe

6 months ago

Staff Backend Software Engineer - Performance

AI C++ Data Pipelines Distributed Systems Java +5 skills

Streaming TV is no longer just a brand awareness channel. It’s becoming a core part of the performance marketing mix, alongside search and social. is building the platform that makes TV work like the rest of the…