NLFreelancer profile translated to English.
Back to original languageAbout Nathan
Hello, I am Nathan Lebon, a Software Engineer specializing in backend and scalable infrastructures.
Passionate about software architecture and distributed systems, I have developed robust microservices in Golang and Node.js, handling hundreds of thousands of daily requests. With my experience at Leboncoin (Adevinta) and Nooco (Vinci), I have designed high-performance solutions by leveraging Docker, Kubernetes, AWS, and Kafka.
🔹 What I bring:
✔️ Optimized backend development (Go, C, Node.js)
✔️ Microservices architecture & event management (Kafka, RabbitMQ)
✔️ Application security (authentication, OAuth2, 2FA)
✔️ Optimization of scalability and cloud costs
✔️ Monitoring and observability (Datadog, Kibana)
✔️ Test-Driven Development approach and efficient CI/CD
🚀 My goals: I enjoy working on demanding projects in terms of performance, security, and scalability. Whether it's optimizing existing architectures or designing robust solutions from scratch, I am ready to take on new challenges!
📩 Need a backend expert? Let's discuss your project!
French
Native or bilingual
English
Fluent
Spanish
Basic
Remote only
Primarily works remotely
Experience
- Leboncoin (Adevinta Group)Software EngineerJuly 2022 - Today (3 years and 11 months)Paris, France• Developed scalable microservices in Go, handling hundreds of thousands of daily requests• Implemented authentication and security features (2FA, session handling, token management, Oauth2, …)• Reduced costs by 15% on OTP codes through biometrics and mobile challenges methods• Designed fraud detection mechanisms (device fingerprinting, IP verification, rate limiting, anomaly detection, AI file verification, …)• Managed Kafka event-driven architecture, processing tens of thousands of events• Deployed and maintained 20+ microservices using Kubernetes,• Set up logging (Kibana) and monitoring (Datadog) to analyse user behaviour• Ensured 80%+ test coverage for all services• Led the transition of authentication services, managing hundreds of thousands of requests (2FA challenges, email confirmations, …)• Collaborated with Spanish and German teams to integrate Leboncoin's features into their marketplaces.• Worked closely with other engineering, product, and security teams to align authentication mechanisms
- Nooco (Vinci)Software EngineerAugust 2020 - July 2022 (1 year and 11 months)Paris, France• Built and deployed a serverless platform using AWS, Node.JS and React• Designed and developed the carbon footprint calculation engine independently• Automated testing and deployment with GitHub Actions• Mentored two new developers in a growing team• Collaborated with product managers and domain experts to define and deliver key features• Optimized platform performance and scalability to handle complex datasets
- France télévisions éditions numériques - Issy-Les-MoulineauxBackend Developer (Intern)April 2019 - August 2019 (4 months)• Optimized video ingest by the Node.JS Api to improve user experience• Developed control tools for the different microservices• Used RabbitMQ for an event-driven architecture• Wrote unit and functional tests
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Education
- Expert in Information Technology,EPITECH2021Expert in Information Technology,
- Certificate in Information Technology,Université Laval2020Certificate in Information Technology,