M Sultan Javaid

Senior Software Engineer

Freelancer.com • Fulltime

Jan 2021 - Present • 5 yrs 4 mos

As a Full Stack WordPress Developer with 6+ years of experience, I build scalable, secure, and high-performance web solutions for businesses and agencies worldwide. I specialize in custom theme development, plugin customization, Advanced Custom Fields (ACF & ACF Pro), Custom Post Types (CPT), and complex dynamic website structures. On the front end, I create responsive, pixel-perfect interfaces using modern HTML, CSS, JavaScript, and optimized UI practices. On the back end, I develop custom functionalities, REST API integrations, database-driven solutions, and performance-optimized architectures tailored to business needs. I have strong expertise in troubleshooting and resolving critical WordPress issues such as ACF data not saving, CPT display problems, template hierarchy conflicts, query errors, AJAX issues, and plugin/theme compatibility conflicts. My approach focuses on clean code, scalability, security, and long-term maintainability. I ensure every project is lightweight, SEO-friendly, and built to perform. I collaborate with startups, agencies, and entrepreneurs to turn complex ideas into reliable and conversion-focused WordPress solutions.