Lokesh S

Full Stack Developer and B.Tech Information Technology graduate (Apr 2026, CGPA 8.54/10) with 10+ months of production software engineering experience across the SDLC. Skilled in Angular, Node.js, Express.js, and PostgreSQL, with hands-on expertise in RESTful API design, JWT authentication, Docker containerization, CI/CD pipelines, and Agile collaboration with cross-functional and US-based client teams. Proven record of end-to-end feature ownership, query optimization, and unit-tested, production-grade code delivery.

Full Stack Developer Intern - OptiSol Business Solutions

(2025-08 - 2026-06)

• Engineered and maintained a production web application using Angular, Node.js, Express.js, and PostgreSQL across multiple business modules serving live clients.
• Owned 5+ features end-to-end — from requirement analysis through deployment — reducing dependency on senior developers and accelerating sprint delivery.
• Architected and shipped 10+ secure RESTful APIs with JWT authentication, improving data consistency across 3 core modules.
• Optimized PostgreSQL queries and resolved production defects, improving API response time and reducing incident volume.
• Containerized microservices with Docker and integrated CI/CD pipelines; led requirement-gathering calls with US clients and coordinated cross-team feature integration.

Backend Developer Intern - Larsen & Toubro (L&T)

(2024-09)

• Built ASP.NET Core REST APIs for internal enterprise applications, enabling structured, role-based data access.
• Automated Excel report generation with MySQL integration using EPPlus, eliminating manual data entry and cutting report turnaround time.

B.Tech - Information Technology - St. Joseph's Institute of Technology, Chennai (2022-11 - 2026-04)

HSC - Everwin Matriculation Higher Secondary School, Chennai (2019 - 2022)