nxvdeep

Engineered scalable Python services with connector-based architecture to extract customer data from 6+ databases (MySQL, PostgreSQL, MSSQL, Oracle, Databricks, Netsuite), enabling seamless integration for multiple internal teams. Designed optimized SQL and Python transformation models for ELT pipelines, implementing multithreading in the ingestion layer to handle 50GB+ data efficiently, improving data quality and reducing processing time by 30%+. Automated large-scale data downloads and processing from AWS S3 using Python scripts, cutting manual effort by 90%+ and enabling insights delivery within minutes. Took ownership of scheduler workflows using APScheduler for periodic data extraction and transformation, ensuring 100% SLA compliance and reliable daily operations.

Developed a decentralized voting application integrating Node.js backend APIs, React frontend, and Solidity smart contracts, enabling secure, scalable, and transparent voting workflows. Redesigned REST APIs for user authentication and vote submissions, improving modularity and enabling 100% decoupled frontend-backend interactions. Deployed and tested smart contracts on Ethereum, Polygon, and Avalanche testnets, optimizing transaction cost by 40% and ensuring cross-chain compatibility. Delivered end-to-end application serving 50+ demo users, gaining hands-on experience in full-stack development and decentralized software design.

Designed and developed 10+ full-stack features using React.js, Next.js, Node.js, building scalable web applications with RESTful and GraphQL APIs. Integrated 3+ LangChain AI agents for LLM-based content summarisation, enhancing product intelligence features for 20+ users. Implemented 20+ PostgreSQL and MongoDB data models, optimising queries by 25% for performance and consistency. Developed 50+ unit and integration tests using PyTest and Jest, improving code reliability and coverage. Collaborated with 7 team members (designers, product owners, DevOps) to deliver features aligned with sprint planning and Agile practices.