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Raj Freefire

@rajfreefire

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Backend developer intern at Zordial Technologies who cut DigiLocal search query time by 76.2%.

India

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At Zordial Technologies, I engineered a multi-tiered backend for DigiLocal with Node.js, Express.js, and PostgreSQL, including JWT authentication and role-based access controls. I improved search query performance by 76.2% with PostgreSQL B-Tree indexes and managed deployment on AWS EC2.

I also built projects including OmniQuery, a hybrid agentic Text-to-SQL and RAG platform, and Research X, a multi-agent research system. In competitions, I placed first among 100+ competitors in CodeHack and reached Knight rating on LeetCode.

Experience

Work history, roles, and key accomplishments

Current

Backend Developer Intern

Current

Zordial Technologies

Jul 2026 - Present (2 months)

Engineered a scalable multi-tiered backend for DigiLocal using Node.js, Express.js, and PostgreSQL, implementing JWT auth and role-based access controls. Optimized search query performance by 76.2% via PostgreSQL B-Tree indexes and managed production deployment on AWS EC2 with AWS SES for transactional email delivery.

NodeJS ExpressJS PostgreSQL JWT RBAC EC2 AWS SES Performance Optimization

Education

Degrees, certifications, and relevant coursework

Global Institute of Technology

Bachelor of Technology, Computer Science and Engineering

2023 -

Grade: 8.4/10.0

Activities and societies: Head of BitByBit (College Coding Club), leading technical discussions and peer mentoring.

Pursuing a Bachelor of Technology in Computer Science and Engineering with a current CGPA of 8.4/10.0. Serving as Head of the BitByBit College Coding Club, leading technical discussions and peer mentoring.