Build High-Performance

I’m a Full-Stack Software Developer specializing in web and mobile app architecture for businesses across the globe. I design and engineer secure, high-performance digital systems using Next.js, React Native, Node.js,Spring Boot, and PostgreSQL. My core mission is driving actual business growth through smooth user interfaces, reliable payment pathways, and robust REST APIs.

I’ve successfully launched 15+ client systems globally, including the customized Daves Telematics GPS Tracking Platform and various corporate systems running across international timezones.

Available for Freelance Contracts100% Remote Workflow Worldwide
Joseph Mutunga, Global Full-Stack Developer

💼 Professional Experience

A timeline of my professional and hands-on software development journey — combining remote projects, internships, and real-world learning experiences.

Freelance Software Developer (Remote)

Online & Referral Clients

2024 – Present

Working remotely with global clients and referrals to design and build modern web and mobile applications. Focused on full-stack development using Next.js, React Native, Node.js, and Spring Boot. Specialized in API integrations, secure payment systems, and deployment best practices.

Software Development Intern

Credit Bank Kenya

July 2024 – Jan 2025

Assisted in developing and maintaining backend services for digital banking systems. Gained hands-on experience with RESTful APIs, payment gateways, and internal integrations for banking operations using Java (Spring Boot) and Node.js.

Software Developer (Attachment)

Young Muslim Association

June 2023 – August 2023

Developed and maintained organizational websites, improving accessibility and content management. Contributed to full-stack web development projects while collaborating with the IT team to enhance user engagement.

Core Capabilities

What I Build For Businesses

Tailored digital engineering focused on speed, intuitive workflows, and industrial stability.

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Cross-Platform Apps

Native iOS & Android systems engineered cleanly out of a shared codebase via React Native. Features include seamless hardware tracking, background syncing, and smooth layout runtimes.

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SaaS & Premium Web UI

Lightweight interactive web systems compiled on modern Next.js servers. Fully search-optimized out-of-the-box, providing fast loading speeds that maximize visitor conversions.

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Backend Systems & APIs

Secure architectures constructed securely with Node.js or Spring Boot. Optimized complex relational schemas (PostgreSQL) mapped out for scalability and rapid data responses.

Joseph Mutunga Working on Global Projects

My Stack

Technologies I Master

I match specific tech choices to real-world operational problems, establishing clean, maintainable architecture for my clients.

  • JavaScript / TypeScript
  • React / React Native
  • Next.js Framework
  • Node.js Ecosystem
  • Spring Boot (Java)
  • PostgreSQL Systems
  • Tailwind CSS
  • Python Engineering

Answering Doubts

Frequently Asked Questions

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