Rajinder Kumar

Developed Flask-based productivity suite with CRUD operations, RESTful APIs, and SQLite integration via SQLAlchemy ORM.
Designed modular, reusable backend components with clean coding standards.
Ensured reliability through debugging, testing, and error handling.
Maintained source code, version control, and documentation using GitHub, delivering a scalable and production-ready solution.
Designed and developed a Django-based social media app using MVT architecture with secure authentication.
Built user features: posts, images, comments, profiles, follow/unfollow, notifications, and trending logic.
Implemented RESTful APIs, Celery for async tasks, and managed data with Django ORM and SQLite.
Architected interactive Streamlit dashboards across Healthcare, Finance, Sports, Sales, and E-commerce with end-to-end pipelines.
Engineered automated PDF reporting using FPDF.
Applied K-Means clustering for sports analytics and advanced data cleaning for healthcare.
Designed visualizations, implemented RESTful APIs, and optimized repository performance with Git strategies and OS-agnostic path management.
Engineered multi-threaded automation suite with Tkinter GUI, file organizer, and background task scheduling.
Integrated real-time email alerts via SMTP, robust logging, and error-handling for system diagnostics.
Optimized startup with dynamic module injection.
Maintained clean architecture and version control using Git.
Engineered a production-ready data pipeline using FastAPI and Python 3.12, leveraging asyncio and ThreadPoolExecutor to achieve high-performance concurrent batch processing.
Architected a custom performance middleware for real-time latency tracking and integrated Prometheus monitoring to maintain a 99.98% uptime target.
Implemented the Strategy Design Pattern for dynamic algorithm switching.
Fully containerized the application using Docker and Kubernetes for scalable, cloud-native orchestration.
Engineered a high-performance retail engine using FastAPI and PostgreSQL, featuring an atomic stock-tracking algorithm that ensures data integrity and prevents race conditions during high-concurrency purchase events.
Developed a comprehensive multi-channel payment gateway interface supporting Credit/Debit Cards, PhonePe, and RazorPay, integrated with server-side validation to ensure secure transaction processing.
Implemented a full DevOps lifecycle by containerizing the application with Docker and orchestrating services via Docker Compose and Kubernetes, achieving environment parity and seamless scalability across cloud platforms.

Developed Flask-based productivity suite with CRUD operations, RESTful APIs, and SQLite integration via SQLAlchemy ORM., Designed modular, reusable backend components with clean coding standards; ensured reliability through debugging, testing, and error handling., Maintained source code, version control, and documentation using GitHub, delivering a scalable and production-ready solution.

Developed end-to-end ML pipeline using NLP, TF-IDF, and Cosine Similarity for resume-job matching.
Engineered skill extraction engine with rule-based matching, weighted scoring algorithm, and skill gap analysis via Seaborn.
Optimized deployment with modular notebooks, Git version control, and robust preprocessing for unstructured data.
Developed end-to-end ML pipeline for daily retail sales forecasting with Prophet, SARIMAX, and Random Forest.
Engineered automated feature extraction (temporal lags, rolling stats, Fourier transforms) and YAML-driven configuration.
Optimized accuracy with robust metric suite (MAE, RMSE, MAPE) and high-granularity store-product demand predictions.

Developed end-to-end ML pipeline using NLP, TF-IDF, and Cosine Similarity for resume-job matching., Engineered skill extraction engine with rule-based matching, weighted scoring algorithm, and skill gap analysis via Seaborn., Optimized deployment with modular notebooks, Git version control, and robust preprocessing for unstructured data.

Designed and developed a full-stack Flask application with role-based authentication for Admin, Vendor, and Customer.
Built dashboards for trip management, orders, and platform activity with real-time updates using MySQL.
Integrated secure RESTful APIs and responsive UI with Bootstrap, ensuring scalability and maintainability.

Designed and developed a full-stack Flask application with role-based authentication for Admin, Vendor, and Customer., Built dashboards for trip management, orders, and platform activity with real-time updates using MySQL., Integrated secure RESTful APIs and responsive UI with Bootstrap, ensuring scalability and maintainability.

Completed 7 tasks and two projects given by Elevate Labs.
Built and deployed Python/Flask applications with clean architecture and RESTful API integration, enhancing scalability.
Developed a Bookstore Management System with CRUD operations, PostgreSQL integration, and secure authentication, reducing manual record-keeping by 80%.
Created a Weather Forecast App in Streamlit, processing live API data with 95% accuracy.
Designed an Image Enhancer Tool using Pillow, cutting processing time by 60%.
Automated data collection with web scraping scripts, reducing manual effort by 70%.
Conducted data analysis with NumPy, Pandas, Matplotlib, and SciPy, generating actionable insights.
Delivered production-ready backend utilities, automation scripts, and full-stack solutions with measurable performance gains.

Completed 7 Tasks and Two Projects given by Elevate Labs., Built and deployed Python/Flask applications with clean architecture and RESTful API integration, enhancing scalability., Developed a Bookstore Management System with CRUD operations, PostgreSQL integration, and secure authentication, reducing manual record-keeping by 80%., Created a Weather Forecast App in Streamlit, processing live API data with 95% accuracy.

Developed a full-stack MERN application (MongoDB, Express, React, Node.js) for a freelance marketplace.
Implemented JWT-based authentication and Bcrypt password hashing for secure user access.
Built RESTful APIs for CRUD operations on gigs and orders, integrated with MongoDB.
Designed a responsive React frontend using Bootstrap for modern UI/UX.

Developed a full-stack MERN application (MongoDB, Express, React, Node.js) for a freelance marketplace., Implemented JWT-based authentication and Bcrypt password hashing for secure user access., Built RESTful APIs for CRUD operations on gigs and orders, integrated with MongoDB., Designed a responsive React frontend using Bootstrap for modern UI/UX.

Designed, built, and maintained scalable RESTful APIs using Django REST Framework.
Managed and optimized PostgreSQL database schemas and queries for performance and data integrity.
Wrote clean, efficient, and documented code.
Participated in code reviews.
Integrated backend logic with frontend components, emphasizing security and system performance.

Designed, built, and maintained scalable RESTful APIs using Django REST Framework., Managed and optimized PostgreSQL database schemas and queries for performance and data integrity., Wrote clean, efficient, and documented code; participated in code reviews., Integrated backend logic with frontend components, emphasizing security and system performance.