backend engineer

About us  Wazo builds programmable, API-first communication infrastructure and applications. We power unified communications at the infrastructure level: real-time systems, SIP signaling, WebRTC, media flows, distributed services, and high-availability architectures and applications based on those. This is not feature-layer work. This is mission-critical...

About Stellar Stellar brings together professionals and experts from a range of exciting domains and technologies: telecommunications (cellular 4G/5G terrestrial and non-terrestrial networks, Wi-Fi and satellites), mobility (trains, aircraft, drones and road vehicles), and software for efficient data transmission, orchestration, network management, data...

Context & MissionLefty is scaling fast, and we’re investing in engineering quality to match. We’re hiring our first dedicated QA engineer, a founding role in the Tech team.As AI makes writing code faster and cheaper, quality control becomes the real bottleneck and differentiator — QA is more critical to product success than ever, not less.Your mission:...

Company DescriptionWe have a simple yet ambitious goal; to sell train tickets in the easiest way possible for all European destinations. Booking a train should be just as simple as hopping on a train.Capitaine Train was founded by 3 engineers obsessed with simplicity. Our organisational structure is very simple and linear: those who make product decisions...

About Upsun (formerly Platform.sh)  Upsun is the cloud application platform humans and robots love. It is built for today’s hybrid teams, where AI agents write and test code and humans focus on solving the problems that really matter. Developers, DevOps engineers, and platform teams use Upsun to build, ship, and scale confidently without wrestling with...

IT Search has partnered with a well-funded, high-growth consumer technology startup in Paris to hire an experienced Software Engineer.The company is building a new approach to social products and has attracted backing from leading international investors. With a highly international team and ambitious plans for growth, they're now expanding their engineering...

Dashlane’s mission is to deliver the credential security every business and employee needs to thrive. Millions of consumers, and over 25,000 brands worldwide, such as Michelin, Air France, and Forrester, trust Dashlane for industry-leading innovations, patented zero-knowledge security, and an unmatched user experience. Founded in Paris, Dashlane has since...

lefty.io is an influencer marketing platform that empowers brands to optimize their strategy and automate their workflows. We help brands and agencies run top-performing influencer programs end-to-end: from talent discovery & qualification, to relationship management, automated campaign reporting, performance measurement, and competitive benchmarking.The...

You’ll be Volta’s technical leader in Paris. You’ll be the technical voice of the company, run the tech kickoff, build the first integrations yourself, and then hire and grow the FDE squad that comes after you. You report directly to the CTO, based in Italy. Think of it as the CTO role, localised to the French market: hands-on at the start,...

FullStack Engineer – Paris The FullStack Engineer will play an active role in designing, developing, and maintaining a new product for Entrust’s Instant Financial Issuance solution. The product is a web application integrated into a payment marketplace, and you will also work on back‑office and customer onboarding...

Work on Windmill's Rust backend - the execution engine, workers, language runtimes, API layer, and infrastructure that powers thousands of production deployments. Who We’re Looking For This is a senior role. We’re looking for someone who has operated distributed systems at scale and can teach us from day one - showing us PostgreSQL patterns, distributed...

At Parallel, we build AI agents to help healthcare facilities automate their administrative processes and unlock additional revenue, starting with medical coding.Today, up to 25% of healthcare spending is lost in manual, repetitive administrative work. Legacy software hasn’t helped, it’s made things slower, more complex, and more frustrating for care...

Beamy détecte l'usage réel de 50K+ applications chez 500K+ utilisateurs dans les grandes entreprises, grâce à une extension navigateur déployée à grande échelle. Des millions de signaux captés chaque jour — pas du déclaratif, du comportement réel.Notre ambition : transformer ce signal en intelligence stratégique — comprendre comment le...

As a Location Platform Engineer, you will contribute to building and maintaining the infrastructure that efficiently fetches and processes background location data across a wide range of devices and operating systems. This role offers the opportunity to work on production systems at scale while balancing battery efficiency, privacy compliance, and OS...

About the RoleWe are looking for an experienced Staff AI Engineer to help build the engineering foundations behind Blue Yonder's next generation of AI-powered products.As part of Blue Yonder's Autonomy Labs, you will work alongside model-training teams, researchers, data engineers, and product engineers to develop agents that operate within real supply chain...

Sia est un groupe international de conseil en management de nouvelle génération. Fondé en 1999, nous sommes nés à l’ère du numérique. Aujourd’hui, nos services en stratégie et management sont augmentés par la data science, enrichis par la créativité et guidés par la responsabilité. Nous sommes "optimists for change" et aidons nos clients à...

Rejoins le top de l'IA chez Datakeen en tant qu'AI Evals Engineer ! Lieu : La Défense (ou remote hybride jusqu'à 3j/semaine) Langues : Français & Anglais Chez Datakeen, on propulse les entreprises vers l'excellence opérationnelle grâce à une IA éthique, utile et humaine. Nos solutions transforment l'expérience client, boostent la productivité et...

Sweep is looking for a Senior Fullstack Engineer (freelance)to work on our Sustainability Data Intelligence Platform. Climate change is the defining issue of our time. Sweep builds a sustainability data intelligence platform used by major enterprises to track greenhouse gas emissions, meet regulatory requirements, and drive real decarbonization. We're a B...

Job Description Chariot’s engineering hire will be responsible for taking the Chariot platform to the next level. You will lead the evolution of our banking product, DAF product and technology strategy, along with building a growing team of software engineers. You will work closely with the CEO and team of founding engineers to build out a product that can...

The Role We’re building the next generation of real-time conversational AI systems. Our agents operate under real production traffic, where latency, scalability, reliability, and engineering quality are critical. We’re looking for a Senior AI Software Engineer to design and build the production systems that allow these agents to respond intelligently and...