Freelancer profile translated to English.
Back to original languageAbout Oussama
Senior Full-Stack Developer | Expert in SaaS & AWS Cloud Solutions
10+ years of experience in Full-Stack development, specializing in the design and optimization of SaaS, web, and business applications. I assist companies in creating tailor-made solutions, from conception to production, with a focus on performance, scalability, and security.
Key Skills:
✅ Back-End: Java, Spring Boot, Python, Spring Batch
✅ Front-End: Angular, React, JavaScript, TypeScript
✅ Databases: SQL Server, MySQL, Oracle, PostgreSQL, Flyway
✅ Cloud & DevOps: AWS (EC2, S3, RDS, CloudFront), Docker, Maven
✅ Methodologies: Agile (Scrum), Clean Code
Why work with me?
✅ Technical & business approach for effective and scalable solutions.
✅ Ability to transform a need into a high-performing product.
✅ Experience in various projects: SaaS, CRM, fintech, business management.
✅ Available for remote or hybrid assignments.
Let's discuss your project!
French
Native or bilingual
Arabic
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- WaresoftLead Full-Stack Developer Java / Angular / AWSSOFTWARE PUBLISHINGApril 2020 - Today (6 years and 2 months)Fontenay-aux-Roses, France
- Design of the technical architecture for a SaaS platform (backend, frontend, security, deployment)
- Lead backend Java / Spring Boot and frontend Angular development, with design of secure and scalable REST APIs.
- Design and implementation of complex business modules: notes, absences, payments, reporting, HR (contracts, stakeholders, workflows).
- Responsibility for code quality: project structuring, performance, clean code, and version/migration management (Flyway)
- Setup and supervision of AWS environments: Deployment, scaling, high availability, backups, monitoring, and service continuity
- Technical leadership of delivery: Task breakdown, technical prioritization, and continuous delivery
- Corrective and evolutionary maintenance on several SaaS products in parallel
- Technical environment: Java 17, Angular 14, Spring Boot, REST API, PostgreSQL, Flyway, AWS (EC2, S3, RDS, CloudFront), Maven, Agile/Scrum, Docker, Ngx-Charts. - FreelanceSenior Full-Stack Developer Java / ReactSOFTWARE PUBLISHINGMarch 2018 - November 2024 (6 years and 9 months)Paris, France
- Participation in the strategic migration of a legacy ColdFusion web application to a modern Java / React stack, without service interruption for users
- Design and development of new business features on a platform with a high volume of users
- Optimization of application performance, particularly through SQL query optimization on very large data volumes
- Evolutionary and corrective maintenance of modules in ColdFusion, Java, and Spring batch
- Contribution to the reliability and scalability of the solution in a high-volume context (145K users)
- Corrective and evolutionary maintenance of existing modules in ColdFusion, Java, and Spring Batch
- Technical environment: Java 8, Spring boot/ batch, React, JavaScript, JQuery, SQL Server, Flyway, Hibernate, Maven, Spring, Docker, Jenkins, Nexus. - DIRECTSKILLSJava DeveloperSOFTWARE PUBLISHINGJune 2015 - February 2018 (2 years and 9 months)Paris, France
- Corrective and evolutionary maintenance of an interim management application in production
- Development and correction of backend and frontend features
- Participation in the design and development of a SaaS platform
- Writing technical specifications and associated documentation
- Participation in testing and application stabilization phases
Technical environment: Java, Spring boot, Maven, React, JavaScript, JQuery, SQL Server, ColdFusion, Docker, Rancher, JUnit, Jira
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Education
- Master in Computer Science and Information SystemsUniversity of Rouen2013
- Expert Title in Computer Science and Information Systems, Development OptionEPSI PARIS2014