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I'm Sife Mahmud Simon, a frontend-focused software engineer specializing in React and Next.js, with production work across telecom, logistics, dashboards and internal platforms.
Designing the interface and engineering the system behind it.
A selection of production and end-to-end work where interface decisions meet software engineering.
An end-to-end commerce product with customer and administrator journeys, secure authentication, inventory, orders, media uploads and a recoverable public demo.
I work across interface design and software engineering, choosing the right level of technology for the problem rather than starting with a framework.
Responsive, component-led experiences that make complex products feel direct and understandable.
Skitto / GPFi / GrameenphoneTracking, dashboards and operational workflows designed around real data, edge cases and user roles.
Sundarban / Issue TrackerClear rendering boundaries, reusable service layers and maintainable application structures in React and Next.js.
Next.js / React / TypeScriptAuthentication, APIs, persistence and deployment when the product requires ownership beyond the browser.
Scatch / MongoDB / ExpressMy progression has been shaped by shipping, maintaining and improving digital products used beyond the portfolio itself.
Explore the complete project archiveJoined the product engineering team and began shipping production interface work.
Expanded ownership across responsive frontend systems, APIs and product delivery.
Contributed to customer journeys, dynamic content, tracking flows and internal applications.
Building full-stack products that demonstrate architecture, operations and complete user journeys.
I care about the complete path from an idea to a reliable product: the hierarchy users see, the component system teams maintain and the data and services that make every interaction work.
I'm based in Dhaka, Bangladesh and open to product teams that value thoughtful interfaces, strong engineering and continuous learning.
The interface should explain itself before motion adds personality.
Good UI decisions respect data, performance, states and maintainability.
Keyboard, touch and reduced-motion experiences are part of the product.
Tell me what you're building, what feels difficult and what a good outcome looks like. I'll reply with a direct next step.