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SUJITH KUMAR
Chengalpattu,TN
Summary
Adaptable professional skilled in application management and user support. Demonstrated success in coordinating troubleshooting activities and providing effective training, contributing to improved application performance and user satisfaction.
Overview
10
10
years of professional experience
Work History
Application Support Engineer
Armtech Computer Service Pvt Ltd.,
Chennai
04.2024 - Current
- Performed functional and transaction-level testing for NCMC workflows, including successful, failed, and exception scenarios, to support application and payment processing reliability.
- Supported migration of closed-loop parking application to open-loop NCMC architecture on PCI DSS-certified POS terminals, validating end-to-end transaction processing across required transaction flows.
- Diagnosed application and technical issues, completed initial root-cause analysis, provided step-by-step resolution guidance, and supported end users through issue resolution.
- Monitored application performance and transaction metrics, identified functional and technical issues, and coordinated troubleshooting activities to maintain system availability and operational efficiency.
- Collaborated with development teams to review application design proposals, analyze user requirements, and provide functional and technical feedback to improve application usability and operational effectiveness.
- Verified FIN/RRN file generation for individual transactions through accurate TID/MID-to-terminal mapping, supporting transaction data integrity and reconciliation readiness.
- Updated terminal master sheet with accurate TID/MID mapping, terminal configuration deployment details, and operational records.
- Authored, reviewed, and maintained standard operating procedures, troubleshooting guides, and technical documentation to standardize support processes and improve issue resolution.
- Conducted application support training for junior team members covering operational processes, troubleshooting procedures, transaction workflows, and support best practices.
Senior Engineer
Bharat IT Services Limited
Chennai
01.2023 - 03.2024
- Monitored closed-loop application performance, resolved application faults, and supported users with routine operational issues.
- Tested and configured applications to confirm alignment with business and technical specifications.
- Ran API tests across application, web, and database endpoints to verify request and response processing and system behavior.
- Checked database tables and records for accuracy, consistency, and completeness across transactions.
- Observed closed-loop transaction activity during peak and non-peak periods through dashboards, tracking trends and supporting operational oversight.
- Created application user accounts and assigned roles and access permissions for users.
- Reviewed application records manually and completed authorized edit and delete updates to preserve data integrity.
- Supported NCMC card data migration and adjusted related settings to enable open-loop to closed-loop switching while maintaining transaction data integrity.
Application Support Engineer
Xenovex Technologies Private Limited
Chennai
01.2022 - 12.2022
- Performed functional and integration testing for fare operations applications across AFC server environments, checking system workflows and operational reliability.
- Developed and validated application workflows, encompassing approval processes, business rules, and end-to-end transaction scenarios to enhance operational reliability.
- Supported application testing and production support for automatic fare collection (AFC) and payment-related applications, keeping operations stable and resolving functional issues quickly.
- Validated integration between closed-loop systems and the EFO application, ensuring seamless penalty collection from closed-loop cards via handheld NFC-enabled devices.
- Tested EFO handheld device communication through proxy servers, confirming dependable data exchange between handheld devices and backend systems.
- Executed and validated free and discounted fare workflows through a transit mobile application, ensuring compliance with eligibility rules and accuracy in transaction processing.
Customer Support Engineer
Bharat IT Services Limited
Chennai
03.2021 - 12.2021
- Managed stable POS terminal operations across stations through proactive TMS monitoring, cache clearing, and issue resolution, strengthening user experience.
- Confirmed Android application workflow integrity and functional behavior through end-to-end testing in controlled environments, meeting business and technical requirements.
- Drove root-cause analysis for application and terminal issues through log inspection and structured investigation, enabling timely defect remediation with developers.
- Established accurate terminal configuration and secure transaction processing through SAM key mapping, DSAK setup, parking tariff configuration, and parameter adjustments.
- Led rollout of Android applications across Smart POS terminals through TMS support, enabling NFC-based digital payments with CMRL travel cards in production environments.
- Maintained reliable digital fare collection and trip operations through validation of NFC card data structures, route-map configurations, and hail driver and passenger payment interfaces.
- Generated daily revenue files and backend transfer from station terminals through routine verification.
- Controlled access review and database update approvals to keep operational records current across station-level web applications.
Junior Engineer
Updater Services Pvt Ltd.,
Chennai
11.2016 - 02.2021
- Endpoint and peripheral uptime remained strong through preventive maintenance, troubleshooting, and support for desktops, laptops, printers, scanners, operating systems, and network devices.
- Windows 7, Windows 8.1, and Windows 10 deployments were completed successfully, along with software installation and domain/workgroup administration.
- Reestablished LAN, WAN, and Wi-Fi access by configuring TCP/IP, conducting tests, and providing infrastructure support across stations and project sites.
- Service desk operations stayed aligned with incident management and routine IT service delivery through osTicket ITSM platform configuration.
- Enterprise application support remained consistent for DMS and e-Office, with additional assistance for Microsoft Exchange Server mailboxes and access administration.
- Compliance control was strengthened through administration of Exchange permissions, document access, VPN access, and authentication settings.
- Site access workflows became more efficient through configuration of biometric devices, access cards, and gate-pass processes.
- Centralized access records stayed accurate for staff, visitor, and client entry and exit activity, supporting database administration, data integrity, security oversight, and audit-ready documentation.
Education
Bachelor of Engineering - Electronics And Communication Engineer
Velammal Institute of Technology
Chennai04-2015
Skills
- Quality assurance testing
- Technical troubleshooting
- Transaction monitoring
- Application management
- System configuration
- Database management
- User support and training
- End-user training
- Application tracking
- API testing
- API testing
Declaration
I hereby declare that the information given above is true and correct to the best of my knowledge.
Timeline
Application Support Engineer
Armtech Computer Service Pvt Ltd.,
04.2024 - Current
Senior Engineer
Bharat IT Services Limited
01.2023 - 03.2024
Application Support Engineer
Xenovex Technologies Private Limited
01.2022 - 12.2022
Customer Support Engineer
Bharat IT Services Limited
03.2021 - 12.2021
Junior Engineer
Updater Services Pvt Ltd.,
11.2016 - 02.2021
Bachelor of Engineering - Electronics And Communication Engineer
Velammal Institute of Technology