As a Freelance Software Developer, I take backend, integration, and full-stack projects for small-business clients from requirements through production deployment and ongoing support. I built scheduled data-migration and scraping pipelines that import and normalise records into SQL databases, replacing manual data entry.
I also built e-commerce Telegram shops with catalogs, carts, orders, and admin panels using the Telegram Bot API and PostgreSQL or MySQL. These shops run in production on a Linux VPS.
For a small-business client working in accounting and records, I designed an internal database from the ground up and developed the backend logic and user interface. I optimised queries and indexes as data grew, and deployed and maintained the application on the client's Linux server.
I develop REST APIs and full-stack features with Node.js, Express.js, React, and Django. I also built a Django task-management application with secure authentication and a Dockerised deployment, and implemented a GNSS position-estimation project using triangulation and numerical methods.
