Lizel Graaff

PHP Developer with 11 years of professional experience in software development. I am skilled in PHP, MySQL, JavaScript, jQuery, AJAX, XML, and modern frameworks, including Laminas. Proven ability to maintain scalable web applications with database integration and API development. Recognized for problem-solving, clean coding practices, and collaboration across cross-functional teams.

Software Developer - Kerridge Commercial Systems - Johannesburg

(2023-01 - 2025-09)

Maintain eCommerce web applications using PHP (Laminas framework), Linux, Ubuntu-22.04, Ubuntu-20.04, JavaScript, jQuery, AJAX, Twig, XML

• Enhanced database performance and integrity using MySQL and HeidiSQL.
• Built reusable templates with Twig for clean and maintainable front-end rendering.
• Optimized local Ubuntu development environments for faster deployments and debugging.
• Collaborated with multi-disciplinary teams to deliver user-friendly web solutions.

IT Lecturer - Code College - Johannesburg

(2022-01 - 2022-12)

• Delivered courses in MERN stack, React, and Node.js.
• Guided students in building full-stack applications, including CRUD systems and shopping cart apps.
• Developed Node.js apps with MongoDB and Mongoose; React apps with Firebase integration.
• Completed MERN, React, and Node.js training to deepen full-stack expertise.

PHP Developer - Stratusolve - Centurion

(2022-05 - 2022-06)

• Worked with PHP backend development and Svelte front-end integration.
• Gained exposure to modern JavaScript front-end frameworks.

PHP Developer - Affinity Health - Johannesburg

(2021-11 - 2022-02)

• Updated and enhanced CRM system functionality using PHP, JavaScript, jQuery, AJAX, and MySQL.

PHP Developer - Universal Healthcare - Johannesburg

(2014-07 - 2021-04)

• Built applications using in-house PHP framework (ODAC).
• Developed patient management systems for Dietitians and Case Managers.
• Designed wellness event scheduling and questionnaire systems for biokineticists.
• Automated reporting with FPDF, generating provider and member statements.
• Created secure FTP data transfer programs for Data Warehouse integration.
• Conducted QA on PHP scripts to ensure compliance with PSR standards.

IT Lecturer - Compuways / Getcertified - Johannesburg

(2012-04 - 2014-06)

• Delivered training in PHP, MySQL, and WordPress.
• Developed student projects, including login/authentication systems and database-driven websites.

Senior Medical Technologist - Ampath / Lancet / Vermaak & Vennote - Johannesburg

(2001-01 - 2012-12)

• Specialized in Haematology, Flow Cytometry, and Coagulation testing.
• Operated and maintained laboratory equipment, ensuring accuracy and compliance.
• Performed quality control and troubleshooting across laboratory systems.

National Diploma - Biomedical Technology (Haematology) - Technikon Pretoria (1997-01 - 2003-12)