Freelancer profile translated to English.
Back to original languageAbout Guillaume
Freelance Backend Developer – Python / FastAPI / DevOps / Embedded AI
Immediately available for short, critical, or urgent tasks.
I've been working with Python for 6 years, with a specialization in APIs (FastAPI), modular architecture, microservices, CI/CD, and AI integration where it makes sense.
I have experience in demanding environments (finance, HPC, NLP), and I have led both personal projects and professional missions: scoping, design, and production deployment.
Most recently: FairyTale Stories, an MVP generative AI app (text + image stories), built on a microservices stack on Kubernetes, with a payment gateway, modular backend, AI orchestration (ChatGPT + Stable Diffusion), and multi-environment CI/CD.
Project presented at the Fighters Program (Station F).
I am comfortable working independently or as part of a team. My code is clean, my logic is clear, and I take full technical ownership without needing constant supervision.
Looking for someone reliable, capable of quickly delivering a clean, scalable, and documented foundation? Get in touch.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 10km)
Experience
- LCHRad/api software engineerOctober 2021 - February 2024 (2 years and 4 months)Paris, FranceSeconded to LCH. Bank clearing house belonging to the LSEG group. Domain: banking, finance. Role: development of internal software to assist business teams in their projects. Projects:
- Solo and end-to-end management of a data validation web application according to user constraints.
- Implementation of a data retrieval API module in a Java application
- Development of a Spring batch application for data validation from a database. Languages: Python, Java, Git Frameworks: Flask, Spring Boots, Spring Batch. Skills: project management- Gathering business requirements.
- Creation of specifications and software architecture documents.
- Project monitoring and validation with security teams.
- UAT execution with the business. Development:
- Full backend development in Python
- Co-development of a frontend in Angular
- Unit + Integration tests.
- Implementation of new routes and features in a Spring boot project.
- Integration of new features in a Spring batch project.
- Qarnot computingDotnet core C# engineerSOFTWARE PUBLISHINGOctober 2019 - February 2024 (4 years and 4 months)Software engineer at QarnotRoles :* Software maintenance SDK qarnot (python, nodejs, C#)* Testing different ML Models on Qarnot machines* Customer support for using the Qarnot Solution* Server initializationLanguages :Python, C#, js, bash, docker, gitFrameworks :Net 5, nodejs, Tensorflow, pytorchSoftware engineer at Qarnot Roles : * Software maintenance SDK qarnot (python, nodejs, C#) * Testing different ML Models on Qarnot machines * Customer support for using the Qarnot Solution * Server initialization Languages : Python, C#, js, bash, docker, git Frameworks : Net 5, nodejs, Tensorflow, pytorch
- Harman InternationalASR Data engineerFebruary 2019 - August 2019 (6 months)92130 Issy-les-Moulineaux, FranceWithin a team of 10 people:
- Developed text corpus cleaning tools.
- Created text generation tools using techniques like Markov chains and templating.
- Set up a machine learning development environment.
- Utilized machine learning tools like TensorFlow.
- Worked with the Kaldi framework. Technical Environment: Unix, Linux, Git, Python, Java, Bash.
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Education
- Certificate of Architect in Digital Technologies, Digital422018Certificat d'architecte en technologies numériques, Numerique
- Certificate, Digital EntrepreneurshipHEC PARIS2017Certificat, Digital entreprenership