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Description

What I bring

REST / gRPC API architecture & development (design, implementation, testing, documentation).
Setup of microservices and real-time services.
Asynchronous communication / messaging (e.g. MQTT) and management of field constraints (unstable network, offline).
Data synchronization (local PostgreSQL ↔ remote servers), consistency and resilience.
Production optimization & reliability: profiling (pprof), CPU/latency reduction, incident diagnostics.
Observability: metrics/monitoring (Prometheus), logs, efficient troubleshooting.

What sets me apart

A true production culture: I design services intended to be operable, monitored, and debuggable.
Experience with high-constraint systems (real-time, embedded, service continuity).
I deliver maintainable code: clean code, tests, docs, and justified technical choices.

Typical projects / deliverables

Go backend API (REST/gRPC) + unit & integration tests.
Containerized microservices (Docker), CI/CD.
Synchronization services and asynchronous processing (MQTT / event queue).
Setup of monitoring/logging + dashboards (depending on stack).
Performance audit + optimization plan (pprof profiling, actionable recommendations).

Keywords: Golang, Backend, Microservices, gRPC, REST, MQTT, PostgreSQL, Docker, Kubernetes, CI/CD, Linux, Observability, Prometheus, pprof.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent
Arabic
Basic
German
Basic

Workplace preferences

Can work on-site

Lille (up to 50km)

SNCF
Software Engineer – Golang
February 2020 - November 2025 (5 years and 9 months)
Lille, France
Development of mission tracking software (embedded passenger information system).
• • Design and development of a REST API for mission tracking, integrated into the embedded passenger information system and deployed on over 30 trains.
• • Architecture and implementation of a real-time mission tracking gRPC service, reducing mission state propagation latency.
• • Setup of ground-to-train communication via HTTP and MQTT, with offline mode management and significant reduction in message loss.
• • Development of a gRPC service managing local PostgreSQL databases per train, with automatic periodic synchronization to ground servers, improving data consistency.
• • Development of a logbook management service for recording SIVE operational data, with synchronization to ground systems, significantly reducing incident investigation time.
• • Introduction of profiling and performance optimization via pprof, enabling a 20% reduction in CPU usage and a decrease in production incidents.
• • Technical environment: Golang, gRPC, REST, MQTT, PostgreSQL, Docker, pprof, Linux, Git.
Macopharma – Capgemini
Software Engineer
April 2015 - February 2020 (4 years and 10 months)
CHU – Eurasanté, Lille, France
• • Development of UVC illumination control software for platelet concentrate processing, ensuring precise dosage and safety mechanisms.
• • Design of diagnostic and component testing tools, significantly reducing hardware debugging time.
• • Design of a real-time signal supervision and tracking system for telemetry, including live alerts and historical trend analysis.
• • Implementation of automated graphical interface tests with Squish, improving GUI stability and greatly reducing regressions before production deployment.
• • Development of a real-time simulation tool for integration into medical training, used by technicians during testing phases.
• • Technical environment: C++, Qt, Python, Squish, Embedded Linux, Git.