Freelancer profile translated to English.
Back to original languageAbout Ghislain
About Me
I am Ghislain, a freelance Python backend developer. I help SMEs and startups develop reliable, performant, and scalable APIs, backend services, and business applications.
With over 4 years of experience in product software development at Haupcar and Manatal, I have contributed to applications used by thousands of users. I work on both the creation of new products and the evolution and optimization of existing systems.
⭐ What I develop
- Backend APIs in Python (FastAPI, Django)
- Scalable backend architectures
- Integrations with third-party services and APIs
- Data processing pipelines
- Internal tools and business applications
- Performance optimization of existing applications
💻 Tech Stack
- Backend : Python (FastAPI, Django), Node.js (TypeScript, JavaScript)
- Data : Postgres (SQL), Redis, MongoDB, dbt, ClickHouse
- Infrastructure: Docker, AWS (S3, CloudFront), CI/CD (GitHub Actions)
- API & Security : REST, WebSockets, OAuth, JWT
- Architecture : RESTful APIs, microservices
✅ Why work with me
Accustomed to product environments, I develop maintainable, documented, and long-lasting solutions.
Some results achieved:
- Over $5,000 in annual savings through ticketing system automation.
- 40% reduction in OpenSearch latency (1.5s → 500ms).
- Development of over 60 internal interfaces covering billing, reservations, and fleet management.
✉ Let's work together
Looking for a Python backend developer to strengthen your team, develop an API, or design a business application? Let's discuss your project on Malt.
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- ManatalSoftware EngineerTECHAugust 2025 - July 2026 (11 months)Bangkok, Thailand
- Development of AI-powered features (including an AI note-taker) used by over 5,000 clients, integrating LLM workflows to enhance recruiter productivity and automate candidate assessment.
- Development and maintenance of client-side features in Vue.js within core recruiter workflows.
- Development of large-scale recruitment features with Python (Django & FastAPI) in a microservices architecture using RabbitMQ, and a ~70% reduction in search costs by migrating from ElasticSearch to OpenSearch.
- HaupcarFull Stack DeveloperTRAVEL AND TOURISMNovember 2022 - July 2025 (2 years and 8 months)Bangkok, Thailand
- Creation of over 60 web pages to optimize internal company processes, including billing, reservations, and vehicle options, using TypeScript, React, MySQL, MongoDB, and NodeJS.
- Annual savings of $5,000 through the implementation of a ticketing management system, improving productivity and reducing reliance on external applications.
- Development of RESTful APIs with NodeJS to ensure efficient communication between front-end and back-end systems, contributing to the success of a content management system (CMS).
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Certifications
- TOEICETS Global2019