Yuvarajan Rajaram
Atlanta,GA
Summary
Results-driven management professional with proven ability to lead teams to success. Strong focus on team collaboration, operational efficiency, and achieving measurable outcomes. Adept at strategic planning, process improvement, and fostering culture of accountability and excellence. Known for adaptability and consistently meeting changing organizational needs.
Overview
21
21
years of professional experience
1
1
Certification
Work History
Manager (SD-WAN & VoIP Testing)
Cognizant
04.2017 - Current
- Lead testing and automation for Cisco Meraki and VMware SD-WAN deployments, enabling secure, scalable connectivity for business customers across hybrid networks. The project focuses on environment management, network performance testing, and integration with MEF-compliant services and IP-VPN.
- Acted as SME for SD-WAN, managing test strategies for Cisco Meraki MX appliances and VMware SD-WAN Gateways across Dev, QA, and Production.
- Designed and executed performance tests using JMeter and Iperf to validate throughput, latency, and jitter under high-traffic conditions.
- Automated network configuration validation using Python reducing setup time by 35%.
- Developed test cases for failover, QoS policies, and application-level traffic steering.
- Analyzed packet captures with Wireshark to troubleshoot BGP and MPLS issues, improving network reliability by 20%.
- Created risk mitigation plans and coordinated with DevOps teams to deploy updates in Agile sprints.
Senior Associate (Performance Engineering)
Cognizant
, GA
07.2014 - 03.2017
- Spearheaded VoIP infrastructure testing, focusing on Cisco switches, Edgemarc SBC, and BroadSoft platforms. Developed automation frameworks using SIPp to validate SIP call flows, call waiting, caller ID, and voicemail functionalities.
- Configured and tested VoIP phone setups with Cisco switches and Edgemarc SBC, ensuring seamless integration with BroadSoft servers.
- Developed SIPp-based automation scripts to simulate concurrent SIP calls, validating SBC performance.
- Validated SIP signaling (INVITE, 200 OK, BYE) and RTP media streams using Wireshark, resolving codec mismatches (G.711, G.722) and static noise issues.
- Automated voicemail with Python and SIPp, incorporating DTMF sequences and audio analysis, achieving 70%+ Word Error Rate (WER) compliance.
- Managed TCPdump captures for SIP traffic analysis, ensuring proper file ownership and dynamic storage in timestamped directories.
- Collaborated with network engineers to troubleshoot SDP parameter issues, ensuring reliable media negotiation.
Test Lead
Mindtree
06.2010 - 07.2014
- Conducted performance testing for Southwest Airlines’ mobile platforms, supporting air booking and check-in features.
- Executed load tests with LoadRunner, simulating peak user traffic on iOS and Android devices.
- Profiled Java applications with JVisualVM, optimizing JVM settings for better response times.
- Mentored team members on performance testing best practices.
Test Lead
Mindtree
06.2010 - 05.2012
- Tested scalability of AADHAAR enrolment servers, processing 1M packets daily.
- Performed endurance tests with JMeter, ensuring system stability under prolonged loads.
- Automated log analysis with Python, reducing debugging time by 40%.
- Prepared test reports for government stakeholders, securing project sign-offs.
Senior Software Engineer
Dell Perot Systems
03.2007 - 06.2010
- Validated performance of the National Instant Criminal Background Check System.
- Conducted server-side performance tuning, improving API response times by 20%.
- Developed LoadRunner scripts for multi-user testing scenarios.
Senior Software Engineer
Dell Perot Systems
01.2007 - 10.2007
- Tested automated payment processing systems for clearing and settlement.
- Optimized MySQL queries, enhancing transaction throughput by 15%.
- Executed performance tests with LoadRunner, ensuring SLA compliance.
Software Engineer
Celtream
01.2006 - 03.2007
- Tested USB file synchronization and encryption application.
- Developed test cases for functional and performance validation.
- Automated database testing with Python, improving test coverage by 25%.
Software Engineer
Vogue Software Services
10.2004 - 09.2005
- Tested windmill monitoring system for breakdowns and grid performance.
- Prepared test scenarios for regression and compatibility testing.
- Executed SQL-based database tests, ensuring data accuracy.
Education
Bachelor of Engineering - Electronics and Communication
Manonmaniam Sundaranar University
01.2003
Higher Secondary Certificate (XII) - undefined
Government Higher Secondary School
01.1999
Secondary School Certificate (X) - undefined
NCS Mills MSS
01.1997
Skills
- Hardware/Devices & Servers: Cisco Meraki MX, VMware SD-WAN Gateways, Edgemarc SBC, Cisco Switches, VoIP Phones, BroadSoft Platforms
- Operating Systems: Windows (Server 2000/NT/2003/XP/Vista/7/8/10), Linux (RHEL, Ubuntu), Unix (Solaris)
- Programming Languages: Python, SQL, Java, Shell Scripting
- Automation & Testing Tools: SIPp, Wireshark, Iperf, JMeter, LoadRunner, Selenium
- Databases & Tools: MySQL, SQL Developer
- Technologies: SD-WAN (Cisco Meraki, VMware), VoIP, IMS, SDN, Unified Communications
- Protocols: SIP, TCP/IP, UDP, BGP, HTTP/HTTPS, RTP, SRTP, MEF, MPLS
- Version Control: Git, Bitbucket
- Configuration Management: Chef, Ansible
- CI/CD: Jenkins
- Other Utilities: MS Office Suite, JVisualVM, Grafana, Cisco Call Manager
- Methodologies: Agile (Scrum), Waterfall, DevOps
- Customer service
- Team leadership
Certification
- Cisco Certified Network Associate (CCNA) – Cisco
- ISTQB Certified Tester – International Software Testing Qualifications Board
- AWS Certified Solutions Architect – Associate – Amazon Web Services
Timeline
Manager (SD-WAN & VoIP Testing)
Cognizant
04.2017 - Current
Senior Associate (Performance Engineering)
Cognizant
07.2014 - 03.2017
Test Lead
Mindtree
06.2010 - 07.2014
Test Lead
Mindtree
06.2010 - 05.2012
Senior Software Engineer
Dell Perot Systems
03.2007 - 06.2010
Senior Software Engineer
Dell Perot Systems
01.2007 - 10.2007
Software Engineer
Celtream
01.2006 - 03.2007
Software Engineer
Vogue Software Services
10.2004 - 09.2005
Higher Secondary Certificate (XII) - undefined
Government Higher Secondary School
Secondary School Certificate (X) - undefined
NCS Mills MSS
Bachelor of Engineering - Electronics and Communication
Manonmaniam Sundaranar University
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