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Karim El HajjamiKE

Karim El Hajjami

Full Stack Developer

€400/day
Antwerp, BE
3-7 years

Average response time: 1 hour

About Karim

With over 6 years of experience in the software industry, I help companies build scalable, high-performance web applications. My expertise lies in bridging the gap between robust backend architecture and seamless frontend experiences. Whether you are a startup looking to launch a MVP or an established business needing to optimize legacy systems, I bring a product-focused mindset to every line of code.
  • French

    Native or bilingual

  • English

    Fluent

  • Arabic

    Fluent

  • Dutch

    Conversational

Can work on-site
Antwerp (up to 50km), Brussels (up to 50km), Liège (up to 50km), Charleroi (up to 50km), Anderlecht (up to 50km)

Experience

  • BELEXPERTS
    Full Stack Developer
    April 2022 - January 2026 (3 years and 9 months)
    • • Architected and deployed 4 client-facing applications using Node.js and Vue.js, implementing asynchronous processing patterns that increased API request throughput by 30% and reduced average response time by 25%
    • • Led technical planning sessions and collaborated with cross-functional teams to translate business requirements into scalable technical solutions, resulting in 15% faster feature delivery across the product roadmap
    • • Engineered RESTful APIs with Node.js integrated with PostgreSQL and Redis caching layers, supporting 10,000+ daily active users with 99.9% uptime
    • • Refactored legacy Laravel codebase to modern JavaScript stack, reducing technical debt and cutting maintenance time by 40%
    • • Mentored 2 junior developers, conducting code reviews and pair programming sessions that accelerated their onboarding by 50%
    Typescript PHP Laravel React.js Agile CRM
  • Delivered Sarl
    Full Stack Developer
    December 2020 - April 2022 (1 year and 4 months)
    • • Developed and maintained modular application architectures using Laravel, Vue.js, and Bootstrap, ensuring code reusability and scalability across 5+ client projects
    • • Integrated 3rd-party APIs (payment gateways, CRM systems) reducing manual data entry by 60% for client operations teams
    • • Optimized database queries and caching strategies, improving page load times by 35% for high traffic WordPress and custom-built applications
    • • Collaborated with stakeholders to analyze business systems and technical specifications, delivering solutions that reduced operational costs by 20% through automation
    Redis Git Linux AWS Fargate Typescript
  • Ad-Smile
    Full Stack Developer
    January 2020 - October 2020 (9 months)
    • • Contributed to full-stack development across the application lifecycle, from requirements gathering to deployment and maintenance
    • • Translated client business requirements into functional specifications and clean code, delivering projects within budget and on schedule for 100% of deliverables
    • • Participated in sprint planning and estimation processes, achieving 90% accuracy in delivery timelines
    Scrum Node.js NestJs GraphQL Bootstrap

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Education

  • Diploma Technician Specialized
    ISTA • • AL HOCEIMA
    2018
    Diploma Technician Specialized
  • Diploma of baccalauréat Physics & Chemistry
    Moulay Smail
    2016
    Diploma of baccalauréat Physics & Chemistry

Skill set

Categories