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John Ofili

@johnofili

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Full-stack developer and AI training specialist delivering optimized, SEO-driven web experiences.

Nigeria

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What I'm looking for

I’m looking to build high-performance full-stack web apps and apply AI/prompt engineering to improve retention and model accuracy, while driving technical SEO and measurable performance gains in a team that values strong problem-solving.

I’m a results-driven Full-Stack Developer and AI Training Specialist focused on building high-performance web applications and incorporating AI logic that improves user retention and model accuracy. I’ve delivered over 15 successful web projects, and I enjoy turning technical challenges into reliable, measurable outcomes.

In my recent freelance work (01/2022–present, remote), I integrate prompt engineering techniques, manage data labeling and annotation for web-based datasets, and strengthen evaluation quality for model training. I also lead technical SEO audits, rewrite UI logic based on user testing, and refactor code to reduce load times—growing organic traffic by 40% and improving performance by up to 30%.

Experience

Work history, roles, and key accomplishments

Freelance Web Dev & AI

Freelance

Jan 2022 - Present (4 years 6 months)

Delivered 15 successful web projects and optimized data workflows to improve user retention and model accuracy. Integrated prompt engineering and improved performance by reducing average page load times 30% through PHP/JS refactoring, while increasing organic traffic 40% via technical SEO audits and keyword strategies.

PHP Javascript (ES6)HTML Technical SEO Prompt Engineering LLM Fine tuning Performance Optimization Git Github