Freelancer profile translated to English.
Back to original languageAbout Dany
**Developer with 8 years of experience**, I design and develop robust applications by placing product value at the heart of technical decisions. My goal is not limited to writing code: I seek to **challenge needs**, **improve existing systems**, and **build useful and sustainable solutions**.
Specializing in backend **Java / Spring Boot**, I also work in a full-stack environment, which allows me to have a global vision of projects and collaborate effectively with front-end, product, and business teams.
Graduated from **école 42**, I have developed a strong ability to adapt to different languages, frameworks, and technical contexts. I intervene in project initiation, evolution, redesign, and scaling.
Accustomed toagilemethods, I bring solid soft skills: **clear communication**, **autonomy**, **team spirit**, and **sense of responsibility**. I enjoy taking ownership of a product, understanding its challenges, and growing it with and for the team.
📍 Based in Strasbourg – on-site or remote missions.
French
Native or bilingual
English
Fluent
Can work on-site
Strasbourg (up to 10km)
Experience
- DECATHLONFullstack Technical Lead – Strategic Financial ApplicationSPORTSJanuary 2021 - February 2026 (5 years and 1 month)Paris, FranceContext:
- Took technical lead on a strategic internal application used by 2,000+ stores, driving over 15 billion euros in revenue.
Responsibility:- Defined and managed the product roadmap in conjunction with business teams.
- Technical reference: managed architecture decisions, supported teams, and disseminated best practices.
Results:- Performance optimization with a 75% reduction in response times (SQL optimization, indexing, multi-threading, asynchronous processing, application decomposition refactoring).
- Processed and consolidated several terabytes of financial data via Spark jobs. Migrated orchestration from Cloud Data Fusion to Airflow.
- Improved data reliability and consistency, ensuring reliable and actionable financial indicators.
- Refactored a legacy application according to clean code principles.
- Migrated infrastructure to Kubernetes.
- Implemented technical analytics and metrics (performance, availability, quality).
- Functional documentation generated via GitHub Copilot.
- Developed and deployed new business features.
- DECATHLONFullstack Developer Spring / VueSPORTSOctober 2018 - December 2020 (2 years and 2 months)Paris, FranceContext:
- Established a task force to quickly identify store employee field issues, prototype (POC), and industrialize solutions. Fullstack developer on several internal applications.
Result:- Designed and developed REST APIs across the entire technical stack.
- Full implementation of the CI/CD pipeline up to production deployment.
- Collected, processed, and exposed data from external sources.
- Implemented analytics solutions for tool monitoring and usage.
- Migrated infrastructure to Kubernetes.
- Optimized performance and improved overall reliability.
- Monitored the product roadmap and coordinated with the client.
- Collaborated with end-users to improve UX.
- DECATHLONIntern Android DeveloperSPORTSMarch 2018 - September 2018 (6 months)Paris, FranceContext:
- Internal need to connect employees. Intern Android developer on an internal mobile application.
Result:- Developed an internal Android application (Java).
- Developed the backend (Spring).
- Implemented a data visualization dashboard.
- Implemented CI/CD.
Reviews
Recommendations
NW
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Education
- 42 Cursus - Developer - Level 13422019This certificate guarantees the student graduated from a school in the 42 network. -- Building upon the foundational skills acquired during the 42 core curriculum, the Developer has started their chosen specialization, equipped with sharpened skills in a specific domain, ready to contribute to the workforce. https://www.credly.com/earner/earned/badge/92a4f212-8ccd-4645-ac2f-ad546479645c