Frequently askedquestions.

Alhaji C.M. Kallon is a Sierra Leonean design engineer based in Freetown. He helps founders, businesses and organisations turn unclear ideas into useful digital products. His work brings together problem discovery, product thinking, experience design and software engineering.

Alhaji Kallon helps people understand what they need to build, why it matters, and how to turn that decision into a working digital product. He works across the process: understanding the problem, defining the product, designing its experience, and engineering a reliable, accessible and performant solution.

A design engineer works across design and engineering, connecting how a product should work and feel with how it is actually built. In Alhaji Kallon’s work, this means translating product requirements and user needs into clear interfaces, thoughtful interactions and maintainable software.

Alhaji C.M. Kallon is based in Freetown, Sierra Leone. He works on digital products with founders, businesses, teams and organisations from there.

Alhaji Kallon offers four connected areas of work: problem discovery, product thinking, experience design and engineering. Problem discovery examines users, context and current workarounds. Product thinking clarifies the value proposition, risky assumptions and useful first version. Experience design shapes information, journeys and interfaces. Engineering builds and improves products with attention to usability, performance, accessibility, reliability and security.

He works with startup founders, business owners, nonprofits and community organisations. He is particularly interested in working with people who have an early-stage idea, an unclear business problem, or an existing digital product that needs a more considered direction.

Yes. He can help clarify the underlying problem, identify the people the product should serve, shape its value proposition, decide which features are essential, design the experience and build the first working version. The process is guided by the project’s objectives, evidence, available resources and constraints.

No. Although web development is an important part of his engineering work, his approach extends beyond implementing website designs. He considers the underlying problem, information structure, user journeys, essential features and the practical requirements of delivering a useful digital product.

His web development work includes React, TypeScript, Next.js and Vite. His backend and infrastructure experience includes Supabase and Cloudflare Workers. Technology choices depend on the product’s requirements, complexity, resources and long-term needs.

His process has four connected stages: Discover (understand the problem, people and context), Define (clarify the problem, value proposition and what to build), Design (shape information, user journeys, interfaces and interactions), and Build (engineer and deliver a working product). The process is iterative, and learning during design or development can lead to revisiting earlier decisions.

He believes a product earns its place by solving a problem people care about and demonstrating that it does. His approach starts with questions about who the product serves, what those people are trying to accomplish, what evidence supports the opportunity and what the first version must prove. He distinguishes facts from assumptions, considers trade-offs and favours focused learning over building features without a clear purpose.

His work connects product decisions with design and engineering. Rather than treating development as simply implementing a list of requested features, he considers the underlying problem, the people affected, the value a solution should create and the practical constraints involved in delivering it.

Alhaji Kallon began studying Computer Science at Central University Sierra Leone in 2022. From 2024, he continued developing his knowledge independently through focused study and practical work, applying software engineering, product thinking and design principles to real projects.

His selected work includes a digital presence project for the Africa Education Empowerment Movement (AEEM), where he worked across content architecture, user experience and frontend development. He is also developing the backend foundation for MJ Studio, a photography-studio application, using TypeScript, Express and Supabase. MJ Studio is an in-progress project, not a completed launch.

He worked on improving how AEEM communicates its work and how visitors understand and engage with the organisation. This included organising information about its mission and activities, improving access to resources, and making opportunities to volunteer, partner and support the organisation easier to discover.

Alhaji Kallon is open to thoughtful projects involving product discovery, experience design and software engineering. Project suitability depends on the problem, objectives, scope and available resources.

Start by exploring his portfolio and relevant case studies. If you have a project, idea or problem to discuss, use the contact page to explain what you are trying to achieve, who the product is for and where you need help.

For general enquiries, email info@alhajikallon.com. For development enquiries, email dev@alhajikallon.com. You can also use the contact page or connect with him through LinkedIn and GitHub.