- Developed a performant front-end application using React, Next.js, TypeScript, and Redux Toolkit, optimizing state management and leveraging React TanStack Query for efficient server-state synchronization and caching.- Built a full-stack solution with Node.js, Express.js, and TypeORM, integrating MongoDB through Mongoose and designing responsive user interfaces with Tailwind CSS, while implementing OAuth authentication via Keycloak for secure SSO (Single Sign-On) capabilities, enhancing both security and user experience.- Developed and optimized Python-based web services using FastAPI, integrating SQLModel and Pydantic for efficient data manipulation and analytics in high-performance APIs.- Integrated Celery with FastAPI for asynchronous task processing, reducing API response times and improving scalability in handling complex background jobs.- Deployed serverless APIs using AWS Lambda, API Gateway, and Cognito, managing storage with S3 and EBS, and enhancing system monitoring through CloudWatch.- Automated AWS resource provisioning using CloudFormation, streamlining deployments across EC2, RDS, and VPC environments while minimizing manual configuration errors.- Achieved high test coverage by implementing unit and integration tests with Cypress and React Testing Library, significantly reducing production bugs and increasing deployment stability.- Actively participated in Agile and Scrum development processes, collaborating with cross-functional teams to deliver high-quality software through iterative sprints enhancing project transparency and adaptability.

- Developed a scalable front-end using React, Next.js, and TypeScript, integrating Material UI and Tailwind CSS to create a highly responsive and visually consistent user interface.- Built a complex data-driven application using TypeORM with PostgreSQL, creating efficient database queries and relationships to ensure optimal performance in handling large datasets, while maintaining type safety and scalability with TypeScript.- Leveraged GraphQL to create flexible and efficient APIs, integrating seamlessly with the React front-end. This allowed for more precise data fetching and reduced over-fetching, improving the application's overall performance and responsiveness.- Developed RESTful APIs using Django and SQLAlchemy, implementing efficient query optimizations and modular designs to handle large-scale data processing, which reduced the response times and improved overall backend performance.- Worked with Docker to containerize a Django application and integrated Celery for handling asynchronous tasks, ensuring consistent environments across development and production, which improved deployment speed, reduced compatibility issues, and optimized background task processing.- Managed AWS infrastructure, deploying services using EC2, S3, Lambda, and API Gateway. Implemented VPC for secure networking and integrated AWS CloudWatch for monitoring, significantly improving the application’s reliability and security.- Practiced unit and integration testing using Jest for the frontend and PyTest for the backend, achieving over 85% test coverage, which helped reduce bugs in production and ensured reliable performance across multiple environments.

- Built a single-page application using React, Redux, and React Router, optimized with Webpack, Babel, and Axios to reduce load times by 20% and improve user experience through efficient state management and dynamic routing.- Developed secure back-end APIs with Express.js, integrated JWT for authentication, and utilized Mongoose with MongoDB to handle complex queries, enhancing performance and security for large datasets.- Led the implementation of ESLint and testing frameworks like Jest and Enzyme, improving code quality and increasing test coverage to 95%, which resulted in fewer regressions and faster development cycles.- Configured Webpack for tree shaking and lazy loading in a React application, reducing bundle size by 40% and optimizing page load times, leading to improved user engagement and performance on slower networks.- Designed RESTful APIs with Flask and SQLAlchemy, integrating with PostgreSQL, and optimized queries, improving API response times by 30% and ensuring secure communication with front-end services.- Built scalable microservices using Django and SQLAlchemy with detailed logging and optimized query performance, reducing database query execution time by 25%, resulting in enhanced overall application efficiency.- Deployed and managed scalable web applications on AWS, utilizing EC2, S3, and RDS for hosting, storage, and database management, while implementing CloudFront for content delivery, which resulted in a 40% reduction in latency and improved global accessibility.- Practiced Test-Driven Development (TDD) using Jest and PyTest, achieving 90% test coverage, which led to fewer production bugs and a more stable, reliable deployment process.

- Implemented a custom data visualization tool using object-oriented principles and JavaScript's prototypes, optimizing performance and scalability for large datasets.- Enhanced application security by implementing closures for sensitive data within modules while utilizing Bootstrap for responsive design, preventing unauthorized access, maintaining data integrity, and ensuring a consistent user experience across devices.- Integrated third-party APIs with callbacks and promises to fetch real-time data in an e-commerce platform, improving user experience and application responsiveness.- Developed a content management system using jQuery for DOM manipulation and event handling, along with generators for efficient asynchronous data fetching and processing, reducing latency and improving overall system performance.- Implemented advanced async patterns like async/await and the observer pattern to handle real-time updates and notifications in a collaborative project management tool.- Utilized React for UI components and state management, leveraging JavaScript's functional programming paradigm and advanced async patterns to build responsive and interactive user interfaces.- Ensured forward compatibility with older browsers using webpack and babel, enabling the use of modern JavaScript features while supporting legacy systems implemented transpilation and polyfilling techniques.