Hafiza Marium I.

I build scalable, high-quality web applications for US clients by combining 14+ years of full-stack development with rigorous QA engineering. I don't just write code; I architect solutions that are testable, accessible, and secure from day one. Core Development Expertise: Frontend: React, TypeScript, Next.js, Redux Toolkit (RTK), HTML/CSS. Backend & Cloud: AWS (Lambda, DynamoDB), FastAPI/Python, SQL Server. Integration: Salesforce/HubSpot CRM, REST APIs, CI/CD (GitHub Actions, Jenkins). The QA & AI Advantage: Built-in Quality: Reducing post-launch bugs by integrating Cypress, Playwright, and unit tests into the development workflow. AI Integration: Developing evaluation frameworks for LLM outputs (Claude API) and using AI tools to accelerate secure code generation. US Standards: Proven experience in regulated US environments (Wheels Inc, Banking/Fintech) ensuring compliance and data integrity. Why Hire Me: You get a developer who understands the full lifecycle. I deliver features faster because I catch defects during development, not after deployment. Ideal for complex React applications requiring data validation, accessibility (WCAG), and reliable automation.