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Sajir KhenissiSK

Sajir Khenissi

Senior Full Stack Java/Angular Consultant | SAFe®

€530/day
Paris 10e Arrondissement, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sajir

🚀 Senior Full-Stack Engineer | Java, Spring Boot & Angular

With over 9 years of experience in developing complex web applications, I support my clients from design to production.
I have led both large-scale projects and ambitious entrepreneurial projects.

âś… What I bring:
• Expert Front-End Angular / Typescript / RxJS: design of performant SPAs, mock-up integration, UX optimization.
• Solid Back-End Java / Spring Boot: robust, secure, scalable REST APIs.
• Product vision & autonomy: I don't just code tickets, I think solutions and challenge functional requirements.
• Modern dev culture: CI/CD, Docker, microservices, code quality, unit & integration tests.

🎯 Areas of intervention:
• Full-stack development and integration into an existing ecosystem
• Setting up SaaS platforms (contracts, asset management, complex workflows)
• Refactoring / migration of architectures (Java 8 → 21, Angular upgrade, etc.)
• Technical support for teams, mentoring, skill development

🔑 Soft skills:

Autonomous, serious, but always collaborative. I enjoy being an effective liaison for Lead Developers or a reliable support for a Product Owner.

đź’ˇ My approach: deliver fast, clean, and sustainable.
  • French

    Native or bilingual

  • English

    Fluent

  • Arabic

    Native or bilingual

Can work on-site
Paris 10e Arrondissement (up to 50km)

Experience

  • BPIFRANCE ASSURANCE EXPORT
    JAVA / ANGULAR Developer
    BANKING AND INSURANCE
    April 2023 - Today (3 years and 2 months)
    Maisons-Alfort, France
    During my consulting assignments, I actively contributed to several important projects, taking on the following responsibilities:

    Commitment Management: I ensured the fulfillment of project commitments by targeting and effectively responding to the specific needs of each initiative.

    Deliverable Quality Control: I ensured that all deliverables met Bpifrance's strict technical requirements, thus guaranteeing the suitability and reliability of the solutions provided.

    Secure Development: Adopting a DevSecOps approach, I integrated best security practices from the design phase, contributing to a more secure and robust development environment.

    Solution Validation: I performed unit tests and automated End-to-End tests to validate the quality and performance of the developed solutions, thus ensuring their optimal effectiveness and functionality.


    To achieve these objectives, I used a range of advanced technological tools, including:

    Angular, for dynamic front-end development
    SonarCloud and Jenkins, for continuous integration and code quality
    Java and Spring Boot, for robust backend development
    JIRA, for agile project management
    GitLab, for versioning and source code collaboration
    These tools and methods were essential for driving projects to success, adhering to the high standards required and promoting secure and efficient development.
    Angular Sonar Jenkins Java JSP JIRA tanzu Spring boot JUnit Apache Tomcat
  • SITEFLOW
    Lead JAVA / ANGULAR Developer at Siteflow Solution May 2021 – January 2023
    ENERGY AND UTILITIES
    May 2022 - Today (4 years and 1 month)
    Paris, France
    As Lead Developer, I held a central role in managing and executing various aspects of technological projects. My responsibilities included:

    Technical Specifications and Task Management: I was responsible for writing technical specifications and allocating tasks within the team, ensuring deadlines were met for successful project delivery.

    Collaboration with Product Owners: I worked closely with Product Owners to validate features developed during sprints, ensuring that new functionalities met expectations.

    Technical Leadership: I led the development, testing, production deployment, and continuous monitoring phases, ensuring system stability and performance.
    Architecture and Design: I defined the architecture for new features, considering best practices and specific project requirements.

    Technical Analysis: I performed in-depth technical analyses to ensure optimal and efficient implementation of features.

    Technical Documentation: I wrote detailed technical documents to facilitate understanding and maintenance of the system by other developers.

    Participation and Influence: I actively participated in technical discussions and important decisions, contributing to problem-solving and continuous project improvement.

    Mentoring and Support: I provided support and guidance to the development team, fostering effective collaboration and achieving set goals.


    To successfully carry out these missions, I used a wide range of tools and technologies, including:

    Languages and Frameworks: Java (versions 8 and 11), Spring Boot, Angular, JavaScript, TypeScript, as well as libraries like NgRx and RxJs.
    Management and Automation: JIRA, Confluence, GIT, Jenkins, Azure DevOps, and Bitbucket Pipeline for code management, test automation, and deployment.
    Security and Maintenance: JWT, OAuth2, SonarCloud, and Dependency-check-maven to ensure code security and quality.
    Design and Interface: Figma for user interface design.
    Java Springboot MySQL Angular Nuclear Energy
  • SITEFLOW
    FULL STACK JAVA / ANGULAR Developer at Siteflow Solution
    ENERGY AND UTILITIES
    March 2018 - Today (8 years and 3 months)
    ĂŽle-de-France, France
    Throughout my career as a Full Stack Developer, I have led and contributed to numerous projects, playing a key role in the design and implementation of software solutions. Here are some highlights of my responsibilities and achievements:

    Development of Sector-Specific Features: I was responsible for developing robust features for CSV file analysis, data injection into databases, and integration of business logic specific to the nuclear industry.

    Nuclear Documentation Validation: I implemented a comprehensive validation process for nuclear documentation, integrating simplified procedures and advanced role-based functions.

    SQL Expertise: I leveraged my expertise in writing complex SQL queries to facilitate seamless data migration during deployments.

    Feature Automation: I developed several automated and asynchronous features to improve the efficiency of data generation.

    File Upload: I created an intuitive user interface for seamless uploading of Excel or CSV files via an integrated form.

    Production Support: I actively participated in production support, bug analysis, and troubleshooting, ensuring delivery deadlines were met.

    To accomplish these tasks, I used a wide range of tools and technologies, including:

    Back-end and Front-end: Java 8/11, Spring Boot, Angular, JavaScript, TypeScript, and libraries like NgRx and RxJs.
    Process Management and Automation: Use of JWT, OAuth2, SonarCloud, and Dependency-check-maven for security and code quality, as well as CI/CD with Bitbucket Pipeline, Azure DevOps, GIT, JENKINS for continuous integration and delivery.
    Project Management and Collaboration: JIRA, Confluence for project management and documentation, and Figma for user interface design.
    Java Spring boot MySQL Angular nuclear Energy

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Education

  • Programming / Computer Developer, General
    La Capsule Academy - Coding Bootcamp
    2018
    Programmation / développeur informatique, général
  • Computer Engineering School, Computer Developer Designer
    EPSI
    2018
    école d'ingénierie informatique, Concepteur développeur informatique

Skill set

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