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I am Abdulkareem Abdullah, a results-driven full stack web developer specializing in designing and delivering scalable, high-performance web applications using modern front-end technologies like HTML, CSS, JavaScript, React, and Next.js, with Node.js for backend development. I adapt at building responsive user interfaces, integrating RESTful APIs, and optimizing application performance for speed, usability, and reliability. I bring a strong problem-solving mindset, a commitment to clean and maintainable code, and a collaborative approach to delivering user-centric digital solutions that drive business outcomes. In cross-functional teams, I collaborate to deliver robust back-end workflows, ensure data integrity, and a smooth user experience across platforms. I’m passionate about innovative payment and transport tech, and I’m constantly learning new tools and patterns to stay ahead in the fast-evolving web landscape.…I am Abdulkareem Abdullah, a results-driven full stack web developer specializing in designing and delivering scalable, high-performance web applications using modern front-end technologies like HTML, CSS, JavaScript, React, and Next.js, with Node.js for backend development. I adapt at building responsive user interfaces, integrating RESTful APIs, and optimizing application performance for speed, usability, and reliability. I bring a strong problem-solving mindset, a commitment to clean and maintainable code, and a collaborative approach to delivering user-centric digital solutions that drive business outcomes. In cross-functional teams, I collaborate to deliver robust back-end workflows, ensure data integrity, and a smooth user experience across platforms. I’m passionate about innovative payment and transport tech, and I’m constantly learning new tools and patterns to stay ahead in the fast-evolving web landscape.

Abdulkareem Abdullah

Web Developer, Front-End Developer, Back-End Developer, +4

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I am Abdulkareem Abdullah, a results-driven full stack web developer specializing in designing and delivering scalable, high-performance web applications using modern front-end technologies like HTML, CSS, JavaScript, React, and Next.js, with Node.js for backend development. I adapt at building responsive user interfaces, integrating RESTful APIs, and optimizing application performance for speed, usability, and reliability. I bring a strong problem-solving mindset, a commitment to clean and maintainable code, and a collaborative approach to delivering user-centric digital solutions that drive business outcomes. In cross-functional teams, I collaborate to deliver robust back-end workflows, ensure data integrity, and a smooth user experience across platforms. I’m passionate about innovative payment and transport tech, and I’m constantly learning new tools and patterns to stay ahead in the fast-evolving web landscape.…I am Abdulkareem Abdullah, a results-driven full stack web developer specializing in designing and delivering scalable, high-performance web applications using modern front-end technologies like HTML, CSS, JavaScript, React, and Next.js, with Node.js for backend development. I adapt at building responsive user interfaces, integrating RESTful APIs, and optimizing application performance for speed, usability, and reliability. I bring a strong problem-solving mindset, a commitment to clean and maintainable code, and a collaborative approach to delivering user-centric digital solutions that drive business outcomes. In cross-functional teams, I collaborate to deliver robust back-end workflows, ensure data integrity, and a smooth user experience across platforms. I’m passionate about innovative payment and transport tech, and I’m constantly learning new tools and patterns to stay ahead in the fast-evolving web landscape.

Available to hire

I am Abdulkareem Abdullah, a results-driven full stack web developer specializing in designing and delivering scalable, high-performance web applications using modern front-end technologies like HTML, CSS, JavaScript, React, and Next.js, with Node.js for backend development. I adapt at building responsive user interfaces, integrating RESTful APIs, and optimizing application performance for speed, usability, and reliability. I bring a strong problem-solving mindset, a commitment to clean and maintainable code, and a collaborative approach to delivering user-centric digital solutions that drive business outcomes.

In cross-functional teams, I collaborate to deliver robust back-end workflows, ensure data integrity, and a smooth user experience across platforms. I’m passionate about innovative payment and transport tech, and I’m constantly learning new tools and patterns to stay ahead in the fast-evolving web landscape.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Yoruba

Advanced

Work Experience

Freelance Website Developer / Frontend Engineer at Self-employed

December 1, 2022 - November 30, 2024

Designed and maintained responsive, user-friendly web applications using React and Next.js. Optimized site performance by 25% through reusable components and efficient rendering logic. Integrated RESTful APIs for seamless client-server communication and real-time updates. Collaborated cross-functionally with design and backend teams to ensure smooth user experience.

Freelance Website Developer at Dervac Ltd Enterprises

December 1, 2021 - December 31, 2022

Built and deployed client-facing websites leveraging React, Next.js, and Node.js. Managed end-to-end project lifecycles from wireframing to deployment. Integrated SEO tools and analytics to improve site visibility and performance. Delivered clean, modern designs aligned with branding and UX principles.

Back-end Team Lead at TYA PB

October 1, 2025 - Present

Lead back-end development for a biometric-synced transportation app; designed scalable services, implemented payment validation, and ensured secure, real-time data processing for transit transactions. Collaborated with frontend and product teams to deliver a seamless user experience.

Freelance Website Developer / Frontend Engineer at Dervac Ltd Enterprises

December 1, 2021 - December 1, 2022

Designed and maintained responsive, user-friendly web applications using React and Next.js. Optimized site performance through reusable components and efficient rendering logic. Integrated RESTful APIs for seamless client-server communication and real-time updates. Collaborated cross-functionally with design and backend teams to ensure smooth user experience.

Back-end Team Lead at TYAPB

October 1, 2025 - Present

Lead back-end development, API design, and server-side integration. Drive end-to-end project lifecycles from wireframing to deployment, coordinating with frontend and design teams to deliver scalable and reliable software solutions.

Freelance Website Developer / Frontend Engineer at Self-employed / Freelance

December 1, 2022 - November 1, 2024

Designed and maintained responsive, user-friendly web applications using React and Next.js; optimized site performance by 25% through reusable components and efficient rendering; integrated RESTful APIs for seamless client-server communication and real-time updates; delivered clean, modern designs aligned with branding and UX principles.

Remote Backend Team Lead

October 1, 2025 - Present

Led backend development efforts for a digitally and biometrically synced transportation application designed to enable seamless, cashless payments for commuting and park access. Created secure backend systems that integrate biometric authentication to validate transportation payments, improving transaction accuracy and fraud prevention. Collaborated with cross-functional teams to deliver a scalable mobile application supporting real-time transactions and multiple transport use cases. Oversaw backend workflows and system performance, ensuring reliability, data integrity, and smooth user experiences across the platform. Contributed to the development of innovative cashless payment solutions, advancing digital transformation in transportation systems.

Frontend/Web Site Developer / Front-end Engineer

December 1, 2022 - November 1, 2024

Designed and maintained responsive, user-friendly web applications using React and Next.js, delivering consistent and engaging user experiences across devices. Optimized application performance by implementing reusable components and efficient rendering logic, achieving a 25% improvement in load speed. Integrated RESTful APIs to enable seamless client-server communication and real-time data updates. Collaborated with designers and backend engineers, ensuring smooth feature implementation, visual consistency, and overall product usability.

Web Site Developer at Dervac Ltd Enterprises

December 1, 2021 - December 1, 2022

Built and deployed client-facing web applications using React, Next.js, and Node.js, delivering scalable and high-performing digital solutions. Managed end-to-end project lifecycles from wireframing and development to testing and deployment, ensuring timely and successful delivery. Integrated SEO tools and analytics, improving website visibility and search performance by 70%. Delivered clean, modern, and responsive designs aligned with brand identity and UX best practices, enhancing user engagement and satisfaction.

Backend Team Lead

October 1, 2025 - Present

Led backend development efforts for a digitally and biometric ally synced transportation application designed to enable seamless, cashless payment for commuting and park access. Created secure backend systems that integrate biometric authentication to validate transportation payments, improving transaction accuracy and fraud prevention. Collaborated with cross-functional teams to deliver a scalable mobile application supporting real-time transactions and multiple transport use cases. Oversaw backend workflows and system performance, ensuring reliability, data integrity, and smooth user experiences across the platform. Contributed to the development of innovative cashless payment solutions, advancing digital transformation in transportation systems.

Frontend Engineer / Freelance Remote Website Developer

December 1, 2022 - November 1, 2024

Designed and maintained responsive, user-friendly web applications using React and Next.js, delivering consistent and engaging user experiences across devices. Optimized application performance by implementing reusable components and efficient rendering logic, achieving a 25% improvement in load speed. Integrated RESTful APIs to enable seamless client–server communication and real-time data updates. Collaborated with designers and back-end engineers, ensuring smooth feature implementation, visual consistency, and overall product usability.

Frontend Engineer (Freelance/Remote)

December 1, 2022 - November 1, 2024

Designed and maintained responsive, user-friendly web applications using React and Next.js, delivering consistent and engaging user experiences across devices. Optimized application performance by implementing reusable components and efficient rendering logic, achieving a 25% improvement in load speed. Integrated RESTful APIs to enable seamless client–server communication and real-time data updates. Collaborated with designers and back-end engineers, ensuring smooth feature implementation, visual consistency, and overall product usability.