Professional Summary Experienced Full Stack Developer with 5+ years of delivering scalable web, USSD, IVR, and mobile applications. Specialized in the MERN stack, ReactJS, and cross-platform solutions with strong backend integration. Proven ability to build offline-first systems, dashboards, and e-commerce platforms, while integrating modern technologies such as mobile payments (M-Pesa, Stripe, PayPal), SMS APIs, and cloud services (AWS, Azure). Adept at leading full project lifecycles—from design to deployment—and collaborating with cross-functional teams. Passionate about user-centered development and driving innovation in digital solutions across industries. Core Skills Frontend: ReactJS, Next.js, React Native, JavaScript Backend: Node.js, PHP (2 years), Python, CodeIgniter Databases: PostgreSQL, MongoDB, MySQL (2+ years) Mobile & Communication Systems: USSD, IVR, SMS APIs Payments: M-Pesa, Stripe, PayPal (1 year) Cloud: AWS, Azure Tools: WordPress, Figma, OCR, CRM Integration Career Timeline Full Stack Engineer, chpter. – Jan 2025 – Present Developing dashboards, USSD apps, and Meta API integrations Founder, Crispin the Developer – Oct 2020 – Present Freelance projects in SaaS, MERN stack, WordPress, and OCR apps Production Operator, Ivy Technology (Hungary) – Mar 2023 – Oct 2024 Hands-on work on Cisco devices and production process optimization Software Engineer, Soukkna Innovations – Apr 2021 – Jan 2023 Built and maintained e-commerce and marketplace platforms Software Developer, Webcloud Kenya – Jul 2020 – Apr 2021 Created marketplace platforms and managed WordPress sites IVR Developer, Hotels Etc (USA) – Mar 2020 – Jan 2021 Designed IVR systems with voice prompts and backend integrations Software Developer, ICS Kenya Ltd – Jun 2018 – May 2020 Built government service platforms and county revenue systems…Professional Summary Experienced Full Stack Developer with 5+ years of delivering scalable web, USSD, IVR, and mobile applications. Specialized in the MERN stack, ReactJS, and cross-platform solutions with strong backend integration. Proven ability to build offline-first systems, dashboards, and e-commerce platforms, while integrating modern technologies such as mobile payments (M-Pesa, Stripe, PayPal), SMS APIs, and cloud services (AWS, Azure). Adept at leading full project lifecycles—from design to deployment—and collaborating with cross-functional teams. Passionate about user-centered development and driving innovation in digital solutions across industries. Core Skills Frontend: ReactJS, Next.js, React Native, JavaScript Backend: Node.js, PHP (2 years), Python, CodeIgniter Databases: PostgreSQL, MongoDB, MySQL (2+ years) Mobile & Communication Systems: USSD, IVR, SMS APIs Payments: M-Pesa, Stripe, PayPal (1 year) Cloud: AWS, Azure Tools: WordPress, Figma, OCR, CRM Integration Career Timeline Full Stack Engineer, chpter. – Jan 2025 – Present Developing dashboards, USSD apps, and Meta API integrations Founder, Crispin the Developer – Oct 2020 – Present Freelance projects in SaaS, MERN stack, WordPress, and OCR apps Production Operator, Ivy Technology (Hungary) – Mar 2023 – Oct 2024 Hands-on work on Cisco devices and production process optimization Software Engineer, Soukkna Innovations – Apr 2021 – Jan 2023 Built and maintained e-commerce and marketplace platforms Software Developer, Webcloud Kenya – Jul 2020 – Apr 2021 Created marketplace platforms and managed WordPress sites IVR Developer, Hotels Etc (USA) – Mar 2020 – Jan 2021 Designed IVR systems with voice prompts and backend integrations Software Developer, ICS Kenya Ltd – Jun 2018 – May 2020 Built government service platforms and county revenue systemsWWWW…