Remote development services
One engineering partner for your web, mobile, or AI product.
I'm Umair Bajwa, a full-stack developer based in Karachi, Pakistan, working remotely with clients worldwide. I can help you launch a new product or improve an existing one, taking ownership across the interface, APIs, data, and deployment.
Discuss your productSaaS and full-stack web development
Build a usable product around your business workflow, from the data model and APIs to customer dashboards and admin tools. I work with React, Next.js, Node.js, and PostgreSQL, with authentication, organization permissions, and deployment considered from the start.
- Product scope and a complete first user journey
- Frontend, backend, database, and role-based access
- Subscription integrations, operational tools, and launch handover
React Native mobile app development
Connect your customer-facing mobile app to the systems that run the business. I build React Native experiences, backend integrations, notifications, and operational workflows, with consistent business rules across customer and internal tools.
- Customer journeys and API-connected mobile screens
- Notifications, live updates, and predictable application state
- Backend workflows shared with admin and operational tools
AI and LLM product integrations
Add AI to a specific workflow: document-based answers, structured content generation, voice, or assisted operations. I design the surrounding system, including retrieval, access boundaries, source references, evaluation, and human review, so the feature can be judged against a real user need.
- A scoped use case and an evaluation set of real examples
- Model integration, context retrieval, and structured responses
- Cost and latency checks, fallback behavior, and review controls
Backend performance and existing-product engineering
Improve an existing application without losing the business rules that make it work. I trace the affected flow, investigate slow APIs and database access, and ship focused fixes or new features with regression checks and a rollout plan.
- A reproducible diagnosis of the affected workflow
- Focused API, database, or frontend changes
- Regression coverage and a deployment verification plan
How we start
Send me the problem you want to solve, who the product is for, what already exists, and any budget or timeline constraints. We can define the first useful milestone, the technical risks, and what a successful delivery should look like before expanding the scope.