Tinotenda Brandon Duma
Founder and Chief Executive Officer, Radbit Inc.
Full-stack software engineer with 5+ years of experience building production-grade web applications, AI-powered platforms, and blockchain systems. He started Radbit to give SADC businesses the institutional records and systems they need to compete globally.
Professional Summary
Full-stack software engineer with 5+ years of experience building production-grade web applications, AI-powered platforms, and blockchain systems. Expert in Next.js, TypeScript, React/Node.js, Python, and Google Cloud Platform with deep experience integrating Google Genkit and Gemini AI across multiple production applications. Shipped 15+ full-stack projects including RAG systems, AI-driven education platforms, DeFi protocols, and real-time trading engines. Proven track record of rapid prototyping, CI/CD acceleration, and delivering AI-augmented solutions that solve real business problems.
Experience
Software Developer and AI Systems Engineer
Kumby Consulting — Harare, Zimbabwe | Oct 2024 - May 2026
- -Designed and deployed a Retrieval-Augmented Generation system (KumbyAI) using Google Genkit and Gemini AI on GCP, providing AI-powered biopharma intelligence with automated news analysis, risk identification, and compliance insights
- -Built and maintained 5+ client platforms including a WordPress news site, a Shopify e-commerce store, a Squarespace jewelry boutique, a GCP-hosted RAG application, and a Squarespace company site
- -Architected full-stack web platforms with React and Next.js frontends and Python and Django backends, deployed on Google Cloud Platform with Docker containers
- -Led rapid prototyping cycles within CI/CD pipelines, reducing development-to-deployment time by 40%
- -Developed cloud-based automation pipelines that reduced manual administrative processes by 60%
- -Applied OWASP secure coding practices and integrated enterprise cybersecurity principles into system architecture
Technical Support Engineer (Systems and Automation)
Tampa Medical College — Remote | Feb 2022 - Mar 2024
- -Managed and optimized LMS cloud infrastructure supporting 10,000+ users across critical digital learning systems
- -Automated administrative workflows using JavaScript and Node.js, reducing processing friction by 35%
- -Enhanced end-user engagement through interactive learning integrations and technical system optimization
- -Maintained 99.5% system uptime through proactive monitoring and incident response
- -Collaborated with US-based stakeholders in a fully remote environment across time zones
Cybersecurity Analyst (Penetration Testing Intern)
Securetia — Remote | Feb 2021 - Mar 2021
- -Conducted penetration testing and vulnerability assessments on enterprise web applications
- -Performed OSINT reconnaissance and identified critical network vulnerabilities
- -Contributed to infrastructure hardening recommendations for client systems
Front-End Developer
Datalabs (formerly Z-Score) — Remote | Sep 2020 - Nov 2020
- -Developed SEO-optimized, responsive landing pages in React.js, increasing platform web traffic by 35%
- -Built interactive monitoring dashboards using modern JavaScript and React.js
- -Collaborated on front-end architecture decisions in a remote Agile team
Education
Bachelor of Science in Applied Computer Technology
United States International University (USIU), Nairobi, Kenya (2018 - 2021)
Key Projects
Cultural Coder
Next.js, Genkit + Gemini AI, Firebase
AI-powered coding education platform teaching programming in English, Shona, and Ndebele with Zimbabwean cultural analogies. Includes 25+ curriculum lessons, interactive code playground, AI text/image/video generation (Imagen 4.0, Veo 2.0), placement quizzes, classroom management, and certificates. PWA-enabled with 11 Genkit AI flows.
Nexus Agronomics
Next.js, Solidity/Hardhat, wagmi, Genkit
Blockchain-powered agricultural investment platform with ERC-20 token (NIT), DAO governance (Governor + Timelock), smart contracts with milestone-based funding, AI-assisted KYC verification, IPFS document storage, and multi-role access (Investor/Initiator/Partner/Admin).
AltarRand
Python, PyTorch/LSTM, XGBoost, WebSockets
Holonic algorithmic trading engine for Kraken Futures. Three-tier architecture with order book analysis (OFI/liquidity), LSTM volatility prediction (TAO/PEPE), and XGBoost momentum signals (BTC/ZEC). Real-time WebSocket data ingestion with PPO reinforcement learning optimizer and trailing-stop position management.
Radbit SME Hub
Next.js, Genkit, Firebase
Full-featured SME platform with 6 AI flows: AI mentor chatbot, tender matching, skills assessment, business toolkit, dashboard analytics, and content moderation. Supports i18n, dark/light/system theming, and offline support.
Simudza Africa / InvestorBoard
Next.js, Genkit, Firebase, Upstash Redis
Multi-role investment platform with AI-powered document processing and KYC verification. Features wallet balance system, project CRUD, admin management, PayNow payment integration, Redis rate limiting, and Recharts analytics dashboards.
Age-Cheat-Zim
React, Solidity/Hardhat, Flutter, DID/VC
Blockchain-based digital identity system preventing age fraud in Zimbabwean youth sports. Uses Decentralized Identifiers (DIDs) with verifiable credentials, biometric verification, tamper-proof records on Polygon, and QR code identity cards.
Technical Skills
Frontend
React, Next.js, TypeScript, JavaScript, Tailwind CSS, shadcn/ui, Framer Motion, Three.js, PWA
Backend
Node.js, Python (Flask, FastAPI), Express.js, RESTful APIs, GraphQL, WebSockets, Django
AI and ML
Google Genkit, Gemini AI (text/image/video), RAG Systems, NLP Pipelines, LSTM (PyTorch), XGBoost, LLM Integration
Cloud and DevOps
Google Cloud Platform (Compute Engine, AI Studio, Vertex AI), Firebase (Auth, Firestore, Hosting), Docker, CI/CD, Vercel, Supabase
Blockchain
Solidity, Hardhat, OpenZeppelin, wagmi/viem/RainbowKit, ERC-20, IPFS (Pinata), Polygon, Celo
Security
OWASP Best Practices, JWT/DID/VC, Penetration Testing, Rate Limiting
Certifications
- Google Cybersecurity Professional Certificate
- Google Cloud AI and Machine Learning Fundamentals
- Artificial Intelligence Analyst - IBM
- ALX-T Cloud Developer - Udacity
- Introduction to Cybersecurity and Cyber Attacks - Cisco Networking Academy / IBM