Mahammad Hajiyev

Designed the Node.js backend for call webhooks, Google Calendar integration, SMS delivery, and operational workflows. Built and shipped Emma, a production AI receptionist, as the solo developer from architecture through deployment.

Evaluated and annotated 10,000+ AI-generated responses, maintaining a 95%+ acceptance rate. Authored RLHF rankings and SFT feedback to improve model alignment and developed adversarial prompts to stress-test safety guardrails.

Worked across React and Python/Django on an 8-person engineering team, delivering production changes. Upgraded the React frontend and strengthened Django authorization with a layered permission structure.

Built a real-time driver-matching system for a delivery and logistics platform, scoring drivers by proximity, capacity, and load. Implemented matching rules for different cargo sizes and collaborated on backend pricing logic.

Integrated Plaid and banking APIs for payroll deductions and loan repayments. Built reconciliation logic, a vesting and loan-forgiveness engine, and lifecycle state transitions for repayment workflows.

Designed and implemented API-driven workflows connecting applications, backend services, and databases. Built data-processing and normalization logic, improved architecture, and supported production releases.

Contributed to development and maintenance of web-based and data-driven applications. Built frontend and backend features, developed and consumed REST APIs, and worked with relational databases.

Pursued a Bachelor's Degree in Computer Science, completing studies in April 2021.

Studied Computer Science at Azerbaijan State Oil and Industry University, with studies beginning in 2018.