🕒 May 20
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• Ship new Awareness features end-to-end • Build robust systems that serve millions of learners and thousands of admin users reliably. • Organize the backend code base and shape the standards the team follows. • Research, pitch, and prototype solutions to hard problems
• You're a doer. That's core to Riot's culture. • You have 2+ years of experience building backend applications in production. • You're comfortable working professionally with SQL and relational data modeling. • You're already using AI coding tools seriously. • You're a team player, eager to give feedback and happy to receive it as a learning opportunity. • You know how to prioritize to ship on time, speed of execution is key, without compromising quality. • You don't need to be a cybersecurity expert, but you need to be motivated by the mission. • Elixir/Phoenix experience is a plus, not a requirement — we've onboarded strong engineers from Ruby, Python, and Go backgrounds. • You're based in Paris or willing to relocate.
• Join a financially healthy company. We're capital-efficient, and fundraising fuels our momentum rather than keeping the lights on. • Contribute to a fast-growing startup with a clear vision and clear business goals. We've tripled revenue over the past two years and plan to grow from €20M to €40M ARR in 2026. • Work alongside a team that takes AI adoption seriously — you'll have the tools, the budget, and the mandate to push the boundary of what's possible with AI-assisted engineering. • Experience the energy of a collaborative team in our modern and cosy office in the heart of Paris: République / Canal Saint-Martin.
Apply Now🕒 May 20
51 - 200
☁️ SaaS
💳 Fintech
🤝 B2B
Senior Backend Software Engineer at Kolecto, a fintech startup in Paris. Developing backend solutions, collaboration with frontend teams, and mentoring junior developers.
🗣️🇫🇷 French Required
AWS
Azure
Cloud
Google Cloud Platform
JavaScript
Node.js
TypeScript
🕒 May 14
501 - 1000
PHP Backend Developer at DentalMonitoring developing high-quality code and collaborating across teams in a hybrid work environment. Engaging in technical reviews and following medical device traceability procedures.
🗣️🇫🇷 French Required
Java
PHP
SQL
🕒 May 13
51 - 200
🤖 Artificial Intelligence
⚕️ Healthcare Insurance
Back-end Engineer contributing to key components of Nabla’s AI-driven healthcare platform. Collaborating with product and machine learning teams to shape infrastructure.
Cloud
Distributed Systems
GraphQL
Java
Kotlin
Python
🕒 April 24
501 - 1000
🚗 Transport
🏪 Marketplace
Confirmed Backend Engineer developing and managing backend systems for carpooling application at BlaBlaCar. Collaborating in a multi-stack team and ensuring seamless integration of carpool supply management.
🏢🏡 Paris – Hybrid
💰 $115M Convertible Note on 2021-04
⏰ Full Time
🟡 Mid-level
🟠 Senior
🔙 Backend Engineer
🗣️🇫🇷 French Required
Docker
Java
Kubernetes
Microservices
🕒 April 14
11 - 50
Backend Engineer developing robust, high-performance backend systems and APIs for Mistral AI Cloud solutions. Collaborating with teams to support a rapidly expanding enterprise user base.
AWS
Azure
Cloud
Distributed Systems
Docker
Google Cloud Platform
Grafana
Kubernetes
Next.js
Prometheus
Python
React
Rust
Terraform
TypeScript
Go