Full-stack development and DevOps solutions that transform your vision into scalable, production-ready applications. Clean code, robust infrastructure, measurable results.
End-to-end development solutions from concept to deployment, with a focus on clean architecture and scalable systems.
Custom web and mobile applications with modern frameworks and clean architecture.
Production-grade infrastructure, automated pipelines, and full monitoring stacks.
Data pipelines, analytics dashboards, and immersive 3D data visualisations.
Streamlining developer operations through generative AI — from workflow automation to team augmentation and quality intelligence.
Multi-tenant SaaS, banking systems, and complex business workflows.
Enterprise-grade SecDevOps pipelines and real-time observability stacks.
Modern tools and frameworks for building robust, scalable applications across the full stack.
Projects built with attention to detail, real-world impact, and production-grade engineering.
Mobile application for paying traffic fines on the go with real-time processing and secure payment gateway integration.
Sporting event platform for ticket purchasing and event booking with integrated payment gateway and digital ticket validation.
Machine learning platform for credit risk assessment helping financial institutions make data-driven lending decisions.
Modern recruitment platform connecting employers with qualified candidates through smart filtering and application tracking.
Learning platform for quantitative finance integrated with Gemini AI for learner assistance, interactive in-browser code labs, and real-time progress tracking.
Immersive 3D metaverse interface for visualising credit risk portfolio data in an interactive spatial environment.
Full-featured URL shortening service with user auth, link analytics, and a clean management dashboard.
Two production banking API implementations: a C# REST API with K8s auto-deployment, and a FastAPI version with Socket.IO, JWT auth, and full observability.
Full-featured fintech mobile app with Paystack payment integration, OTP-secured authentication via BulkSMS gateway, and an automated APK build pipeline via Jenkins CI/CD.
A lightweight, cross-environment encryption/decryption library that works seamlessly between browser frontends and Node.js backends. Symmetric key encryption going both ways — same key, same logic, zero friction.
Have a project in mind? Reach out directly or start a live chat — I respond fast.
Whether you need a new product built from scratch, an existing system improved, or production DevOps infrastructure set up — I'm here to help.
Johannesburg, South Africa — Remote worldwide
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I'm Graham Katana — a Full-Stack Developer and DevOps Engineer based in Johannesburg, South Africa, with 4+ years of professional experience building enterprise-grade systems.
Through Tekbridge, I deliver end-to-end solutions — from React frontends and Python APIs to Kubernetes clusters and full CI/CD pipelines. My work spans enterprise clients across automotive, manufacturing, and financial sectors in South Africa and beyond.
I hold a BCom in Business Information Systems (distinction) and a BSc Honours in Information Technology. I'm currently pursuing an MCom in Business Information Systems at the University of Venda, with research focused on integrating generative AI in software development — examining how AI tools can streamline developer operations across three core pillars: workflow automation, team augmentation, and quality assurance intelligence. I'm an IITPSA member.