Freelancer profile translated to English.
Back to original languageAbout Salaheddine
Senior Backend Developer — Java & Spring Boot, specializing in SaaS architectures and AI model integration (LLM, RAG, OpenAI/Anthropic APIs).
12 years of experience in demanding environments (banking/insurance, e-commerce, public sector), including several years as Lead Developer.
Today, I help startups and scale-ups to:
— integrate AI into their products (LLM, embeddings, RAG, automations) without breaking their existing backend
— design robust, scalable, and cloud-ready multi-tenant SaaS (AWS / GCP)
— modernize Java stacks to Spring Boot 3 / Java 21
— implement clean APIs (REST/GraphQL), well-tested and documented
Common stack: Java 21, Spring Boot 3, Spring AI, PostgreSQL, Redis, Docker, AWS, OpenAI/Anthropic/Mistral integration.
Founder of Asiora — a SaaS I designed, developed, and deployed solo (architecture, backend, AI integration, infrastructure). I know what it takes to ship a product, not just code a feature.
I work in French and English, fully remote or hybrid in Paris.
French
Native or bilingual
English
Fluent
Arabic
Native or bilingual
Can work on-site
Paris (up to 50km)
Experience
- AsioraFounder & Technical Lead — AI/RAG SaaS PlatformSOFTWARE PUBLISHINGSeptember 2025 - Today (11 months)Paris, FranceDesigned and developed Asiora, a multi-tenant AI/RAG SaaS platform focused on enterprise AI assistants and document intelligence systems.Built a complete RAG pipeline using Spring AI + PGVector including:• document ingestion• semantic chunking• vector search & retrieval• prompt orchestration• multi-turn query rewriting• SSE streaming• secure multi-tenant architectureProduction-grade backend architecture using Java 21, Spring Boot, PostgreSQL, Docker and OpenAI APIs.
- bnpparibasJava / Spring Boot Technical Lead – React (Freelance)BANKING AND INSURANCEJuly 2022 - March 2026 (3 years and 8 months)Montreuil, FranceRole:Technical Referent (Team: 1 architect, 3 technical referents, 6 developers, 1 Scrum Master) (AGILE SAFE)Mission:• Requirements gathering.• Writing and executing unit tests.• Application development.• Bug fixing.• Validating Merge Requests.• Migration from Java 8 to Java 21 (with Spring dependencies)• Migration from Jenkins to GitLab CI• Preparation and execution of the EQ (Qualification Phase) deployment.• Preparation and execution of the PROD (Production) deployment.• Production Bug Analysis• Code ImprovementTechnical Environment:Java 8-21, Postgres, SpringBoot, Spring 5, JWT, Maven, Hibernate, Docker, GIT, GitLab CI, Kubernetes, REST API, SOAP, React, IntelliJ, VSCode, Postman, SoapUI, Microservices, Swagger, Jenkins.
- Ministère de la justiceSenior Full Stack Java / Angular Developer (Freelance)PUBLIC SECTORAugust 2021 - June 2022 (10 months)Paris, FranceRole:Senior Developer (Team: 1 architect, 3 technical referents, 5 developers, 1 Scrum Master, 2 testers)(AGILE SAFE)Context:Digital Penal Project (CPN squad: Digital communication and exchange).Mission:• Requirements gathering.• Writing and executing unit tests.• Application development.Technical Environment:Java 11, Postgres, SpringBoot, Spring 5, JWT, Maven, Hibernate, Docker, GIT, REST API, Angular, Bootstrap, IntelliJ, VSCode, Postman, Microservices.
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Education
- Master 2 Software Architecturel'Ecole Supérieure de Génie Informatique2014Master 2 Architecture Logiciel
- Engineering Degreel'Ecole Supérieure d'Ingénierie en Sciences Appliquées2011Diplôme d'ingénieur