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Full-stack · AI applications · digital products
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Hello, I'm Ruhumbika.
Full-Stack · AI Applications · Cybersecurity · Digital Products
Full-Stack Developer | AI Application Developer | UI/UX Designer
I build practical digital products by combining full-stack engineering, artificial intelligence and user-centred design.
Final-year Business Information Technology student with hands-on experience developing web, mobile and AI-enabled systems for local government, education, housing and small-business environments.
“I approach digital products from engineering, business and user-experience perspectives.”More about me
I'm a final-year Business Information Technology student at the University of Dar es Salaam, building web, mobile and AI-enabled systems that solve real organisational and community problems. My work spans local government, education, housing and small-business environments.
Alongside engineering, I run RJAY Digital Hub and RJAY Barbershop, which keeps me close to real customers, operations and product decisions. That mix of technical, business and user-experience thinking shapes everything I ship.
BSc Business Information Technology
University of Dar es Salaam · Expected July 2026 · GPA 3.5/5.0
Dar es Salaam, Tanzania
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respondingOne connected practice combining software engineering, intelligent applications and human-centred product design.
Real project evidence
Five documented digital products
A portfolio grounded in deployed systems, academic builds and products serving real organisational needs.
Full-stack systems and AI applications are my core focus. Digital product design is a complementary strength that makes everything I build more usable.
Designing and developing reliable web and mobile systems with secure backend logic, structured databases, APIs and user-friendly interfaces.
Building locally hosted and privacy-conscious AI applications using language models, Retrieval-Augmented Generation and structured knowledge bases.
Turning real user and business challenges into usable digital products through systems analysis, product thinking and user-centred interface design.
Real systems built for local government, education, housing and small-business environments, presented as case studies rather than thumbnails.
An enterprise dashboard for PETA Holdings that brings property, lease, revenue, unit status and operational monitoring into one workspace.
A role-based licensing platform that centralises trader records, licence renewals, debt tracking, SMS reminders and administrative reporting for a district council.
A locally hosted, privacy-conscious AI assistant that answers student academic questions using a lightweight Llama model, a FastAPI backend and Retrieval-Augmented Generation over a custom FAQ knowledge base.
A mobile-first rental marketplace MVP designed to improve trust, transparency and accessibility between tenants, landlords and administrators, with several trust-and-safety features prepared as concepts.
A customer-facing booking and brand platform for a real barbershop business, connecting software, design and entrepreneurship into one operating product.
Grouped by discipline, with backend and AI application development leading. No ratings or progress bars, just the technologies I actually work with.
Formal academic qualifications and structured professional programmes supporting my work in software engineering, quality assurance, data and digital products.
Academic
University of Dar es Salaam, College of Information and Communication Technologies
GPA: 3.5 / 5.0 · Expected graduation July 2026
Bunda High School
EGM · Division I
Iligamba Secondary School
Division I
Professional
Awarded Grade A for work competence and conduct.
Currently building full-stack solutions at Ma Cargo Transporters and Forwarders (ABOOD Group of Companies), with earlier hands-on ICT experience in public-sector service delivery.
Full-Stack Developer · Tanzania
Currently developing and supporting full-stack digital solutions for Ma Cargo Transporters and Forwarders, part of the ABOOD Group of Companies, while remaining open to more advantageous opportunities.
Field Practical Training · Tanzania
Completed two separate practical training placements in the same ICT Unit. The second placement built directly on the experience gained during the first, deepening both technical support skills and understanding of public-sector service delivery.
These are the principles I bring to every collaboration. Move across each card to explore the responsive interaction.
I turn requirements into a plain-language plan, explain tradeoffs early and keep progress visible from the first decision to delivery.
I work across product thinking, interface design, engineering and deployment so important details do not disappear between disciplines.
I stay close to the people using the product and measure success by whether the final workflow is useful, understandable and dependable.
From understanding the real problem to improving through feedback. This is the workflow I apply to every product I build.
Running these ventures sharpens the product thinking, operations and customer understanding I bring back to engineering.
RJAY Digital Hub & RJAY Barbershop
Operating these businesses has built practical, hands-on experience across the full lifecycle of running real digital and service products.
Interview calendar
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Monday–Friday
Weekday interview availability
09:00–17:00 EAT
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Building intelligent, useful and human-centred digital products.
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I'm currently employed as a Full-Stack Developer at Ma Cargo Transporters and Forwarders (ABOOD Group of Companies), while remaining open to more advantageous opportunities and practical digital product collaborations.