# Mthobisi Nxumalo

Software Engineer and Full Stack Developer based in Durban, KwaZulu-Natal, South Africa.

## Professional profile

Mthobisi designs, builds, and operates production web, mobile, and desktop systems across manufacturing, industrial inspection, e-commerce, and financial services. His work covers the full software development lifecycle: requirements, architecture, database design, development, CI/CD, deployment, monitoring, support, and iteration.

Primary strengths include TypeScript, React, Next.js, Node.js, PostgreSQL, Flutter, React Native, Python, C#/.NET, Docker, Coolify, AWS, and Microsoft Azure.

## Current work

### Wesant Manufacturing / Vision Elevators

Full Stack Developer, September 2025 to present.

- Owns internal and customer-facing applications from requirements and architecture through production delivery and support.
- Builds web systems with Next.js, React, and TypeScript, alongside Flutter, Dart, Android, and Kotlin applications.
- Administers PostgreSQL and Microsoft SQL Server, including schema design, migrations, indexing, optimisation, integrity, and backups.
- Operates Docker-based applications on self-hosted Coolify infrastructure with CI/CD, monitoring, and release ownership.

### Rephina Software

Founder and Full Stack Developer, 2023 to present.

- Delivers custom web, mobile, and desktop applications, dashboards, APIs, workflow automation, deployment, and production support.
- Leads discovery, system architecture, implementation, delivery, and ongoing technical ownership.

## Selected engineering work

### MPIA Services

Industrial NDT inspection and operations platform spanning seven application surfaces across web, desktop, and mobile. The platform uses a central PostgreSQL data model with offline-first Flutter field capture and SQLite synchronisation, tenant-scoped client access, granular permissions, audit logging, and signed Tauri desktop updates.

Core technologies: Next.js 15, TypeScript, Flutter, Dart, Tauri 2, Rust, PostgreSQL, Prisma, NextAuth, SQLite, and Vercel.

### ElevateTech

Integrated manufacturing product and commerce ecosystem connecting a Product Information Management system, supplier portal, customer e-commerce store, and React Native mobile application to one product database. Includes versioned product information, change-history audit trails, CSV workflows, role-based dashboards, inventory synchronisation, and containerised delivery.

Core technologies: Next.js, React, React Native, TypeScript, PostgreSQL, Prisma, Docker, Coolify, and Paystack.

### RedHailer

Service and product marketplace with client/provider role switching, listings, job workflows, QR-based job acceptance and completion, PayStack payments, Pusher real-time messaging, geocoding, and Capacitor mobile delivery.

Core technologies: Next.js, TypeScript, PostgreSQL, Prisma, NextAuth, PayStack, Pusher, and Capacitor.

### Rephina ERP

Internal business operations platform covering finance, CRM, projects, support, HR, reports, document workflows, role-based access, auditability, and a schema of more than 70 tables.

Core technologies: Python, Flask, SQLAlchemy, PostgreSQL, JWT, Alembic, and Vercel.

### Gwensula's Pride

Fast, accessible, SEO-focused static business website designed for reliable loading on South African mobile networks.

Core technologies: HTML, CSS, JavaScript, and Vercel.

## Technical capabilities

- Product surfaces: Next.js, React, TypeScript, Tailwind CSS, Flutter, Dart, React Native, Capacitor, Kotlin, Android, Tauri.
- Application core: Node.js, Python, Flask, C#, ASP.NET Core, C++, Delphi, REST API design, MVC.
- Data: PostgreSQL, Microsoft SQL Server, Oracle, SQLite, Prisma ORM, SQLAlchemy, schema design, migrations, indexing, and query optimisation.
- Security: authentication, JWT, OAuth, role-based access control, tenant isolation, and audit logging.
- Production: Docker, Coolify, AWS, Microsoft Azure, GitHub Actions, CI/CD, Git, backups, monitoring, and support.
- Delivery practice: requirements analysis, system architecture, technical documentation, Postman, Swagger, API testing, code review, Agile, and Scrum.

## Education and certifications

- BSc Information Technology, North-West University, 2020 to 2023.
- Short-Term Insurance, NQF Level 4, Apex Academy, 2024.
- Diploma in Cyber Security, Alison, 2024.
- freeCodeCamp Responsive Web Design and JavaScript Algorithms and Data Structures, 2023.

## Contact and canonical profiles

- Portfolio: https://portfolio.rephinasoftware.com
- Email: mthobisinx30@gmail.com
- Phone: +27 71 927 9462
- GitHub: https://github.com/mthobisi30
- LinkedIn: https://www.linkedin.com/in/mthobisi30
- Rephina Software: https://www.rephina.co.za

Last updated: 2026-08-20.