Full Stack Software Engineer

I am a results-driven Full Stack Software Engineer specializing in custom software, web and mobile applications, APIs, and fintech platforms. I bring proven experience delivering high-impact solutions in the financial and banking sectors, with deep expertise in fintech system integration, automation, payment infrastructure, and core banking systems.
I have built and deployed fund management, loan management, brokerage trading, and payment systems, including automated POS settlement, NFS switch integrations, bulk account onboarding, and secure interbank and mobile money transactions. As a software consultant, I deliver scalable, secure, and high-performance solutions for startups, enterprises, and financial institutions.

25+ Projects Completed
6+ Years Experience
15+ Happy Clients
Software Engineer and Full Stack Software Developer Portfolio
Mobile Development
Web Development
API Development / Integration

Hi, I'm John Mfula

Full Stack Software Developer & Database Designer

John Mfula - Software Engineer and Full Stack Software Developer
Lusaka, Zambia
Available for projects

I am a results-driven Full Stack Software Engineer and software consultant focused on building scalable, secure, and high-performance digital products. I specialize in custom software development, web and mobile applications, APIs, and fintech platforms, with proven experience delivering high-impact solutions in the financial and banking sectors.

My work spans fund management, loan management, brokerage trading, and payment systems, including automated POS settlement, NFS switch integrations, bulk account onboarding, and secure interbank and mobile money transactions. I bring deep expertise in fintech system integration, automation, payment infrastructure, and core banking systems.

Beyond coding, I focus on solving real business problems—designing systems that are maintainable, scalable, and built for growth. From backend architecture and database design to clean user interfaces and mobile experiences, I work across the entire product lifecycle.

What sets me apart is a product-focused mindset. I consider scalability, security, performance, and user experience from day one. I have worked across junior to senior engineering roles, collaborating with teams and supporting large production systems to deliver solutions built for long-term use.

I enjoy working closely with clients and teams, communicating clearly, and continuously learning to stay relevant in a fast-moving tech landscape. Whether you need a software engineer or an experienced software consultant, my goal is simple: build software that works reliably, scales efficiently, and delivers real value.

Mobile & Web Design

Responsive interfaces and seamless user experiences in both mobile apps and web

Systems & Database Design

Scalable component libraries and brand consistency and Relation Database tables design

API Development & Integration

Buld Robust APIs for Custom Systems and seamless Integrations

Search Engine Optimization (SEO)

improving websites appears in search engine

"

Great design comes from understanding users, applying empathy, and evolving through continuous feedback and real-world use.

Let's create something amazing together, Work with John.

Whether you're looking to redesign an existing product or build something completely new, I'd love to explore how we can bring your vision to life.

Skills

I am a versatile Software Engineer and Full Stack Software Developer with strong experience in building modern, scalable, and user-focused digital solutions. My skill set spans custom software development, web development, mobile applications, backend systems, and API integrations, allowing me to take projects from concept to production with efficiency and precision. As a Senior software development engineer, I provide software design expertise for businesses seeking reliable software development firms.

Mastery achieved through continuous exploration and dedicated refinement of craft

Technical Expertise

Core development and technical skills

Full-Stack Development 99%
Database Design 95%
Cloud Architecture 88%

Creative Design

Visual and user experience design

UI/UX Design 94%
Brand Identity 86%

Strategic Leadership

Management and business acumen

Project Management 90%
Team Coordination 96%

Years of Experience

Years

Dedicated to mastering the craft of digital innovation and strategic problem-solving.

Primary Technologies
Elixir Phoenix Framework
PHP Laravel Framework
Python Django Framework
Flutter Dart Framework
AJAX
Bootstrap 5
JavaScript
SQL
Microsoft SQL Server Database
PostgreSQL Database
MySQL Database
Oracle Database
DevOps
Figma
Docker

Resume

I am a results-driven Software Engineer and Full Stack Software Developer with hands-on experience in designing, developing, and maintaining scalable web applications, mobile apps, and backend systems.My journey from junior software developer to senior software engineer has equipped me with expertise in software design, AI software development, and working with software development company.

Professional Experience

My experience reflects a balance between technical expertise and practical execution, with a focus on delivering measurable results and long-term value.

2024 - Present

Senior Software Developer

Probase Limited

As a Senior Software Developer, I lead the design, development, and optimization of scalable, high-performance custom software development solutions that solve real business problems. I play a key role in architectural decisions, software design, code quality, and technical direction while collaborating closely with cross-functional teams to deliver reliable and secure systems. My expertise spans working with software development company.

Team Leadership Strategic Planning Creative Vision Debug & Test systems Deployment and Maintainance
2022 - 2024

Junior Software Developer & IT Support

Probase Limited

As a Junior Software Developer & IT Support professional, I supported the development, maintenance, and improvement of software systems while providing reliable technical support to ensure smooth day-to-day IT operations. This role provided foundational experience in software engineering and custom software development, working alongside experienced software engineers and contributing to software development projects.

2019 - 2022

Junior Software Developer

Probase Limited

As a Junior Software Developer and Entry Level Software Engineer, I contributed to the design, development, testing, and maintenance of software applications while continuously learning and improving my technical skills. This early experience in software development helped me understand the fundamentals of becoming a software engineer and working effectively in software development company.

Education & Qualifications

My education and professional training have provided me with a strong foundation in software development, information technology, and problem-solving. Through both formal education and continuous self-learning, I have developed the technical knowledge and practical skills needed to design, build, and maintain reliable digital solutions.

Diploma in Computer Science

Evelyn Hone College

2017 - 2019

I hold a Diploma in Computer Science from Evelyn Hone College, where I gained a strong foundation in software development, computer systems, C++, HTML, CSS, JavaScript, PHP, MySQL, C# and information technology. The program combined theoretical knowledge with practical, hands-on training, equipping me with essential skills in programming, databases, systems analysis, and problem-solving.

Second Best Student - Merit

Certification in CCNA Routing and Switching: Introduction to Networks - Cisco Networking Academy

Evelyn Hone College of Applied Arts and Commerce

2019

Learned to configure network devices, implement network connectivity, configure monitoring tools, explain network access, and design IP addressing schemes. Through hands-on labs and simulations, I learned to configure, manage, and troubleshoot small networks using Cisco devices. I developed practical skills in configuring switches and routers, understanding TCP/IP models, subnetting, and implementing basic security measures.

Certification in IT Essentials - Cisco Networking Academy

Evelyn Hone College of Applied Arts and Commerce

2019

I completed the IT Essentials course from Cisco Networking Academy, where I gained foundational knowledge in computer hardware, operating systems, networking, and IT support. The course focused on installing, configuring, and troubleshooting computers, mobile devices, and basic networks in both home and enterprise environments.

Professional Certifications

CCNA Routing and Switching: Introduction to Networks Cisco Networking Academy • 2019
IT Essentials Cisco Networking Academy • 2019

Services

As a software developer, I provide end-to-end custom software development solutions designed to solve real-world problems and help businesses grow in the digital space. From planning and software design to development, deployment, and support, my services focus on performance, scalability, and user-friendly experiences. Whether you need a modern website, a mobile application, custom APIs, AI software development, offshore software development services, or ongoing technical support, I deliver reliable solutions tailored to your goals.

Web Development

As a full stack web developer, I design and develop fast, secure, and responsive websites that deliver excellent user experiences across all devices. My web solutions are built with clean code, modern frameworks, and best practices to ensure scalability, performance, and search engine optimization. I provide custom software development services for businesses seeking reliable web solutions.

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Mobile Development

As a software developer specializing in mobile solutions, I build high-quality, user-friendly mobile applications that deliver seamless performance and engaging experiences on Android and iOS platforms. From concept and UI design to development, testing, and deployment, my mobile solutions are optimized for speed, security, and scalability. This custom software development service helps businesses reach their mobile audience effectively.

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Academic Project Assistance

Struggling with a school coding project or assignment? I’m here to help you break down complex concepts, fix bugs in your code, and guide you step by step so you truly understand the material and submit a polished, high-quality project.

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API Development and Integration

As a software development engineer, I design and build secure, scalable, and well-documented APIs that enable seamless communication between applications and systems. From developing custom RESTful APIs to integrating third-party services such as payment gateways, messaging platforms, and external data providers, I ensure reliable performance and data integrity. This custom software development service is essential for modern software design and system integration.

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Digital & SEO Marketing

I help businesses grow their online visibility, attract the right audience, and convert traffic into customers through strategic digital and SEO marketing solutions. From search engine optimization and content strategy to analytics and performance tracking, my approach focuses on data-driven results and sustainable growth.

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Contact

Have a project in mind or need a reliable software engineer to bring your ideas to life? I'd love to hear from you.

Let's Connect

I'm here to discuss your idea.

Email johnmfula360@gmail.com
Phone +260 975 432 237
Location Lusaka, Zambia