Sureshkannan N.

Freelancer

Freelancing Career • Meio período

Jul 2024 - Present • 2 yrs 1 mo

• Developed Auto Auction System using Java and Spring Boot. • Designed REST APIs for vehicle, auction, and bidding modules. • Implemented CRUD operations using Spring Data JPA. • Integrated PostgreSQL database. • Applied DTO pattern, validation, and exception handling. • Managed source code using Git.

Scala Developer

AT&T • Período integral

Jun 2021 - Jun 2024 • 3 yrs

Developed and maintained enterprise-grade backend applications using Java, Spring Boot, and REST APIs. Designed and implemented scalable microservices for high-volume telecommunications applications. Integrated applications with external systems using REST/SOAP web services. Optimized application performance and resolved production issues in a fast-paced Agile environment. Collaborated with cross-functional teams including business analysts, QA, DevOps, and architects. Participated in code reviews, unit testing, and CI/CD deployment processes. Worked with relational databases and wrote optimized SQL queries. Contributed to production support by analyzing logs and resolving critical incidents within SLA.

Senior Developer

HP • Período integral

Oct 2005 - Oct 2010 • 5 yrs

**Mphasis (An HP Company) – Senior Software Engineer (Oct 2005 – Oct 2010)** Worked as a Senior Software Engineer developing enterprise Java/J2EE applications for global clients in the aviation, telecommunications, logistics, and airline industries. Involved in the complete Software Development Life Cycle (SDLC), including requirements analysis, design, development, testing, deployment, production support, client coordination, and mentoring junior developers. Built scalable, high-performance applications using Java, J2EE, EJB, JSP, JSF, SOAP Web Services, XML, Oracle, WebLogic, JBoss, ANT, and Eclipse. **Clients & Projects:** * **American Airlines (USA) – SABRE Direct:** Developed backend middleware components connecting web service clients with the SABRE mainframe. Designed and implemented SOAP web services and business logic using Java and EJB, participated in technical design, production support, effort estimation, code reviews, and quality audits. * **Vodafone UK:** Enhanced the Change Price Plan and Extras modules of Vodafone's customer self-service portal using Java and WebLogic Portal. Prepared High-Level Design (HLD) documents, collaborated with onsite teams, reviewed code and test cases, and supported application deployment and maintenance. * **FedEx (USA) – KIAC:** Developed modules for the cargo management system supporting Air Waybill (AWB) processing. Implemented shipment, routing, consignee, and customs management functionality, developed UI components using JSF/JSP, and participated in design, testing, deployment, and production support. * **Singapore Airlines – Passenger Revenue Incentive System (PARIS):** Completed an onsite assignment in Singapore, implementing enhancements for Miscellaneous Cost and Frequent Flyer Program (FFP) modules while working closely with business users to deliver production-ready solutions. * **Reuters – Reuters Market Light (RML):** Contributed to the development of the Reuters Market Light platform from the ground up