Freelancer profile translated to English.

Description

Senior Backend Engineer with over 10 years of experience, I am committed to deeply understanding the products I work on to deliver robust, scalable, and maintainable solutions, while ensuring cost control and measurable deliverables. Technical rigor, functional consistency, and code quality guide all my contributions. Autonomous and proactive, I integrate quickly into teams and communicate effectively with technical and product stakeholders.

Languages

French
Native or bilingual
English
Fluent
Spanish
Conversational

Workplace preferences

Can work on-site

Paris (up to 50km)

Side, Randstad
Senior Backend Engineer
January 2024 - March 2026 (2 years and 2 months)
Side, a digital interim mobile platform connecting temporary workers and companies. High-scope microservices architecture, Go / Python stack.
End-to-end involvement across the product chain — B2C mobile app, B2B SaaS (job posting and monitoring), internal back-offices — in close collaboration with product, mobile, and front-end teams.

Performance & Reliability
Redesign of a critical aggregation endpoint → +30% on P95 latency.
Implementation of comprehensive monitoring and incident tracking → significant reduction in production error rate over the year.
Real-time display on B2B SaaS.

Modernization & Migration
Gradual rollout of a migration on a critical contractual path (contract signing), without service interruption.
Diagnosis and resolution of critical cross-stack bugs.

Feature Delivery
End-to-end design and delivery of cross-stack features: mission tracking, time savings account, interim worker lifecycle management.

Stack: Go, Python, MongoDB, Redis, RabbitMQ, REST / WebSocket, Microservices, Sentry, Kibana, AWS
Microservices Redis Golang MongoDB Web Socket
Perfectstay
Cloud Backend Engineer
June 2022 - May 2024 (1 year and 11 months)
PerfectStay, a Travel Tech scale-up (French Tech 120), operates the B2B2C travel sales platform for brands like Air France Holidays, Emirates Holidays, Transavia Holidays, and Veepee. AWS cloud-native platform under high traffic (several million requests per day).

Performance & Scaling
Implementation of a high-volume multi-provider aggregation pipeline, critical for the offer packaging chain.
Serving architecture optimized for ultra-fast frontend display.
Optimization of data calculation and aggregation via ElastiCache.

Cloud & Infrastructure
Development and deployment of AWS Lambdas across the platform via Terraform.
Redesign of multi-environment CI/CD pipelines and resolution of production incidents.
Design of scalable architectures with cost control.

Functional Delivery
Integration of new data sources (flights, hotels, activities) into the connectivity chain.
Evolution of offer packaging back-offices (React + API), in close collaboration with business teams.

Stack: Go, AWS (Lambda, ElastiCache), Terraform, MongoDB Atlas, REST API, Distributed Systems, CI/CD.
Terraform MongoDB Golang AWS Lambda AWS S3
Weblib
Backend Developer
January 2020 - January 2022 (2 years)
Weblib, a publisher of cloud Wifi and digital solutions for retail, hospitality, and banking (flagship product: Ucopia, European leader in Wifi for public places).

Migration of an on-premise Wifi hotspot management software to a new Go architecture (LDAP, DHCP) using reverse engineering techniques.
Securing connections (IP whitelisting, filtering authorized websites).
Implementation of code standards and the CI/CD pipeline.

Stack: Go, Docker, LDAP, DHCP, MongoDB, Linux, Microservices.
Docker