Abubakar Khawaja

Production web applications in React, Next.js, Python and Django, including a HIPAA-compliant telehealth platform, owning each feature from the first requirement to deployment.

• Worked across a microservices system in Python and Django with a React frontend, making it more reliable and cutting downtime 30%.
• Reworked Python REST API code and tuned database queries, cutting response times 40% and bringing cloud costs down.
• Deployed and tuned services on AWS ECS, EKS, and Lambda to support scaling, build performance, and deployment reliability.
• Built responsive frontends on the Next.js App Router with React Server Components, improving performance with lazy loading, code splitting, and image optimization.
• Built real-time data pipelines and background job processing, and added WebSockets for live updates.
• Built reusable component libraries with Storybook, keeping the UI consistent across several products.
• Mentored junior engineers through regular code reviews and drove Agile feature delivery, working closely with UX/UI designers, backend teams, and product stakeholders.

• React
• Next.js
• Python
• Django
• PostgreSQL
• AWS
• WebSockets
• Storybook

Full-stack delivery across multiple production products — owning features from architecture through implementation, testing, and deployment while improving performance and developer workflows.

• Cut API response times 30–70% by removing N+1 queries, reworking ORM patterns, and adding targeted DB indexes.
• Built and scaled Celery pipelines for heavy background workloads including bulk PDF generation and scheduled reporting.
• Built reporting and analytics systems managing 1000+ assets and surfaced operational metrics for internal teams and customers.
• Reduced deployment time ~40% by reworking GitLab CI/CD with parallel jobs, caching, and automation.
• Raised automated test coverage from ~10% to 60%+ with Jest, Cypress, and Vitest; enforced ESLint/Prettier/Husky quality gates.
• Refactored frontend architecture to reduce re-renders ~30% and improve load times 20–30% via memoization, code-splitting, and cleaner state management.
• Designed and maintained REST APIs in Django REST Framework with sensible serialization, pagination, and permission layers.
• Owned integrations end-to-end: Stripe, SendGrid, Google Analytics, Looker BI, and real-time WebSockets.
• Mentored engineers through code reviews and pairing; collaborated with product and design in Agile teams to ship reliably.

• React
• Next.js
• Django
• DRF
• PostgreSQL
• Celery
• GitLab CI/CD
• React Query