Freelancer profile translated to English.
Back to original languageAbout Gaëtan
Software / Web Developer – Backend & Architecture
⚡ Some information about me
Golang / Python / PHP backend developer.
Strong expertise in REST / gRPC APIs, distributed services, scalable systems.
Software Architecture: DDD, Clean Architecture, Hexagonal.
Quality & Tests: TDD, unit tests, integration tests, contract tests.
DevOps: Docker, Kubernetes, CI/CD (GitHub Actions, GitLab CI).
Solid foundation in application security (auth, OAuth2, JWT, secrets).
Comfortable with full remote and international teams (fluent English).
🧠 Tech Stack
Backend
- Golang (Gin, Echo, Fiber)
- Python (FastAPI, Flask)
- PHP (Symfony, Laravel)
Architecture & Design
- DDD, CQRS (when relevant)
- Event-driven architecture
- Microservices / modular monolith
- Design patterns
DevOps & Infra
- Docker, Docker Compose
- Kubernetes (Helm, manifests, scaling, healthchecks)
- CI/CD (GitHub Actions, GitLab CI)
- Observability: logs, metrics, tracing (Prometheus, Grafana, OpenTelemetry)
Data
- PostgreSQL, MySQL
- Redis
- Message brokers (RabbitMQ, Kafka)
❓ Why hire me as a Software Developer?
→ Robust and maintainable backend development
→ Design of scalable and testable architectures
→ High-performance and well-documented APIs (OpenAPI)
→ Implementation of best practices (DDD, TDD, clean code)
→ Ability to take over, refactor, and stabilize existing systems
→ Strong product & business sense
❓ Why hire me as an Architect / DevOps?
→ Complete containerization of applications
→ Reliable and automated Kubernetes deployments
→ Quality and speed-oriented CI/CD pipelines
→ Reduction of technical debt
→ Team support on best practices
🤝 Shall we work together?
Full remote
Available for long-term or short-term assignments
Efficient async communication (Slack, Jira, Notion)
Need to launch a new project or fix your coded vibe project?
English
Fluent
French
Native or bilingual
Remote only
Primarily works remotely
Experience
- LoupZeur OUGolang DeveloperDIGITAL AND ITJanuary 2025 - Today (1 year and 5 months)Tallinn, EstoniaDesigned and built a macOS graphical application in Go to analyze and process FCPXML files, automatically detecting and removing silent segments. Implemented efficient XML parsing, audio logic, and a native UI to streamline video editing workflows.Also developed the website using golang, templ and polar.sh for payments, skills=[SkillTranslatableContent(id=Golang, type=GLOBAL, name=Golang), SkillTranslatableContent(id=Software as a Service (SaaS), type=GLOBAL, name=Software as a Service (SaaS)), SkillTranslatableContent(id=Développement web, type=GLOBAL, name=Web Development), SkillTranslatableContent(id=API, type=GLOBAL, name=API), SkillTranslatableContent(id=Back-End development, type=GLOBAL, name=Back-End development)]
- FreelanceBackend DevOpsTECHJuly 2018 - Today (7 years and 11 months)Various freelance assignments:- Development of various Android applications- Implementation of applications in Kubernetes- Development of API/Rest applications in PHP/Symfony- Development of API/Rest applications in Golang- Optimization of software architectures in Go (parallelization, memory and CPU profiling, bottleneck detection and associated patches)Development of various websites coupled with artificial intelligence in Python for various projects:- Development of a conversational receptionist AI for a call center- Development of a content filtering and analysis AI, skills=[SkillTranslatableContent(id=GO, type=GLOBAL, name=GO), SkillTranslatableContent(id=Python, type=GLOBAL, name=Python), SkillTranslatableContent(id=Kubernetes, type=GLOBAL, name=Kubernetes), SkillTranslatableContent(id=Firestore, type=GLOBAL, name=Firestore), SkillTranslatableContent(id=Flask, type=GLOBAL, name=Flask)]
- Lydia SolutionsDevops Golang/PHPBANKING AND INSURANCEJune 2022 - December 2022 (5 months)Paris, France- Design and development of several Golang applications (mainly APIs for generating statistics and data aggregations), managing deployments via Helm on ArgoCD, and monitoring via ELK.- Design and development of the React front-end to manage various Go applications.- Various bug fixes in PHP/Laravel, skills=[SkillTranslatableContent(id=PHP, type=GLOBAL, name=PHP), SkillTranslatableContent(id=GO, type=GLOBAL, name=GO), SkillTranslatableContent(id=Golang, type=GLOBAL, name=Golang), SkillTranslatableContent(id=REST API, type=GLOBAL, name=REST API), SkillTranslatableContent(id=Microservices, type=GLOBAL, name=Microservices)]
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Education
- Master in Internet Design and DevelopmentSup2i2012Master degree CS : design and development of web applications, network architectures and computer security (web: sql injection, xsrf, ...; network: mitm, stp, rip, ...; and software: buffer overflow , exploit writing, ...).
- Bachelor's Degree in Distributed Environment Design and DevelopmentUniversité Robert Schuman2010License dedicated to software and network architecture in a distributed environment (multi-tier: micro service, etc.).
Certifications
- Golang CertifiedSkillValue2020