Hamza – React, Node.js, Next.js

Internal transportation management platform for freight operations, supporting shipment tracking, document management, and invoicing, with AI-powered document intelligence using LLMs and vision models to automate data extraction.

• Designed and shipped full-stack TMS features in React, NestJS, and TypeScript on MongoDB and GCP, replacing fragmented freight workflows with one internal product for operations staff;
• Built LLM-assisted document and invoice agents with Gemini, GPT, and vision APIs so unstructured shipping paperwork could be parsed and routed without hand-keying every field;
• Owned operator UIs and NestJS services end-to-end, including data models and integrations that keep shipment, document, and billing flows in sync.

Internal BI and operations platform for pharmaceutical manufacturing and storage, providing plant, production, and inventory insights through React and Python applications, PostgreSQL, Airflow ETL, and enterprise integrations.

• Built end-to-end BI tools used by scientists and operations staff so manufacturing and storage data could be inspected without waiting on ad-hoc reports;
• Designed and maintained manufacturing and storage applications in React, Python, and PostgreSQL, and kept Airflow ETL pipelines feeding those products reliable;
• Integrated new products into the enterprise stack (SAP, SSO/SAML, ERPs) so plant users could sign in and work against existing systems of record.

Public API and gateway platform for a large freelance marketplace, exposing marketplace capabilities to third-party and internal clients at scale, with GraphQL tooling for building and testing integrations.

• Maintained Java API and gateway services that sat in front of marketplace traffic, keeping public and internal consumers on a stable contract;
• Built an internal GraphQL integration tooling in Vue so other teams could explore and wire marketplace APIs without hand-writing repetitive client code.

Web-based manufacturing execution system connecting shop-floor operations with ERP systems, built with Node.js, PostgreSQL, and Redis, with responsibility for backend delivery, customer setup, and Linux releases.

• Developed and improved the MES application with web technologies so factory customers could run production workflows in a single product;
• Integrated customer ERPs into the MES so plant data and orders stayed aligned with each customer’s system of record;
• Led the Node.js/PostgreSQL/Redis backend, owned Linux deployments and versioned releases, and handled customer hardware setup plus product requirements.

Rapid grocery-delivery marketplace supporting product discovery, ordering, and delivery operations.

• Owned Node.js backend features and observability with Grafana and InfluxDB so production issues on the legacy backend could be seen and acted on;
• Built and integrated a product search API with Elasticsearch, MongoDB, and Node.js so catalog lookup was no longer a simple database scan;
• Developed AWS Lambda functions using RabbitMQ, MongoDB, and Python, and added JSDoc-based API documentation to the backend.