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I'm John Disilwa, a Full-Stack Software Engineer with 6 years of experience delivering high-performance, cloud-native applications across finance, HR, and manufacturing. I specialize in JavaScript, React, and Node.js, building robust, scalable web apps. I thrive in fast-paced environments and enjoy turning complex problems into elegant, maintainable solutions. I have a proven track record of reducing operational costs by up to 25% and boosting system scalability by 40%. I'm skilled in CI/CD automation, cloud deployments on AWS and GCP, and leading migrations that reduce technical debt while improving reliability and velocity.…I'm John Disilwa, a Full-Stack Software Engineer with 6 years of experience delivering high-performance, cloud-native applications across finance, HR, and manufacturing. I specialize in JavaScript, React, and Node.js, building robust, scalable web apps. I thrive in fast-paced environments and enjoy turning complex problems into elegant, maintainable solutions. I have a proven track record of reducing operational costs by up to 25% and boosting system scalability by 40%. I'm skilled in CI/CD automation, cloud deployments on AWS and GCP, and leading migrations that reduce technical debt while improving reliability and velocity.

John Disilwa

Full Stack Developer, Programmer, Cloud Developer, +5

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I'm John Disilwa, a Full-Stack Software Engineer with 6 years of experience delivering high-performance, cloud-native applications across finance, HR, and manufacturing. I specialize in JavaScript, React, and Node.js, building robust, scalable web apps. I thrive in fast-paced environments and enjoy turning complex problems into elegant, maintainable solutions. I have a proven track record of reducing operational costs by up to 25% and boosting system scalability by 40%. I'm skilled in CI/CD automation, cloud deployments on AWS and GCP, and leading migrations that reduce technical debt while improving reliability and velocity.…I'm John Disilwa, a Full-Stack Software Engineer with 6 years of experience delivering high-performance, cloud-native applications across finance, HR, and manufacturing. I specialize in JavaScript, React, and Node.js, building robust, scalable web apps. I thrive in fast-paced environments and enjoy turning complex problems into elegant, maintainable solutions. I have a proven track record of reducing operational costs by up to 25% and boosting system scalability by 40%. I'm skilled in CI/CD automation, cloud deployments on AWS and GCP, and leading migrations that reduce technical debt while improving reliability and velocity.

Available to hire

I’m John Disilwa, a Full-Stack Software Engineer with 6 years of experience delivering high-performance, cloud-native applications across finance, HR, and manufacturing. I specialize in JavaScript, React, and Node.js, building robust, scalable web apps. I thrive in fast-paced environments and enjoy turning complex problems into elegant, maintainable solutions.

I have a proven track record of reducing operational costs by up to 25% and boosting system scalability by 40%. I’m skilled in CI/CD automation, cloud deployments on AWS and GCP, and leading migrations that reduce technical debt while improving reliability and velocity.

Skills

Experience Level

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Work Experience

Senior Software Engineer at InsighTEK Global

March 1, 2025 - Present

Developed and maintained enterprise-scale web applications using Next.js, Node.js, and PostgreSQL, enhancing operational visibility and decision-making across multiple factories. Led development of an Asset Management System that reduced manual effort by 30% and built key modules for LUCA, an HR platform that increased recruitment efficiency by 40%. Collaborated with cross-functional teams to integrate with Azure-hosted services ensuring 99% uptime and optimized performance.

Software Engineer at Responsive

March 1, 2025 - August 19, 2025

Spearheaded migration from Angular to React, reducing codebase size by 30% and improving maintainability. Designed an AI-powered auto-response system that boosted customer engagement by 20% and reduced reply time by 15%. Built a microservices architecture using NestJS, enhancing scalability and deployment speed by 40%. Automated CI/CD pipelines with Jenkins and Docker achieving 95% test coverage and faster releases.

Software Engineer at Value Health

May 1, 2022 - August 19, 2025

Designed and deployed high-performance web and mobile applications serving over 50,000 users, improving multi-device accessibility. Integrated PayPal, Stripe, and Razorpay payment gateways, increasing transaction success by 30%. Optimized ELT pipelines reducing data processing time by 40%. Deployed and maintained GCP Kubernetes clusters with 99% uptime and mentored junior developers improving their productivity by 15%.

Software Engineer at Responsive

May 1, 2022 - March 1, 2025

Spearheaded Angular-to-React migration, reducing codebase size by 30% and improving maintainability. Designed AI-powered auto-response system (Next.js, Node.js) boosting customer engagement by 20% and cutting reply time by 15%. Built a microservices architecture (NestJS) enhancing scalability and reducing deployment time by 40%. Automated CI/CD pipelines (Jenkins, Docker) achieving 95% test coverage and faster releases.

Software Engineer at Value Health

February 1, 2020 - May 1, 2022

Designed and deployed high-performance web and mobile applications (React, React Native, Node.js, Next.js) serving 50,000+ active users, improving accessibility across devices. Integrated PayPal, Stripe, and Razorpay payment gateways, boosting transaction success rates by 30% and checkout reliability. Optimized ELT pipelines, reducing data processing time by 40% through improved SQL triggers and query performance tuning. Deployed and maintained services on GCP Kubernetes clusters, ensuring 99% uptime and meeting strict SLA requirements. Mentored 3 junior developers, improving coding standards, productivity, and onboarding efficiency by 15%.