An overall experience of 18 years in the Telecom Domain for the Wireline & Wireless - IMS, NGN, UMTS – Iu-PS Network, 5G (SMSF) over cloud (K8s) and on prem, with a passion to transition and expand the breadth of knowledge in designing, deploying, and managing scalable and reliable infrastructure and applications as a Site Reliability Engineer and/or Kubernetes Platform Engineer
Key Areas
Azure Kubernetes Services (AKS)
Azure DevOps
Azure Monitor Services integration
Azure Key Vault integration
Hashicorp Key Vault
Open Service Mesh
Terraform
helm(basics)
Ansible
Python
Golang (basic, self-learning)
VmWare (ESXi based)
Jira
Git
Experience
06/2017 to Current
Lead Technical Support EngineerCaterpillar – North Carolina, NC,
Experience in handling customer interactions for product network design, issues, SLAs, resolution matrix etc..
Preparation of system and network requirement based on traffic forecast (CIQ), CRS review, Test Plans release planning, preparation and leading testing activities etc.. along product staging and deployments
Integrating Mavenir Product with other vendor product network nodes of IMS core, LDAP, Archival, Charging, Spam etc..
Be on customer bridge for product troubleshooting calls analyzing wireshark, TRL, KPI, Fluent-bit logs, Grafana dashboard etc..
Identify root cause and determine the action items to resolve issues
Product knowledge of RCS(CPM), SFCS, SMSF (5G).
Platform experience working on aTCA, NFV, Kubernetes (K8s) based product lines.
VmWare ESXi (hypervisor) based deployments for NFV based product line
Kubernetes based deployment on bare-metal based MWP hosting underlying IaaS, CaaS, PaaS layers for the MCO product line.
Kubernetes based deployment on Azure AKS cloud, with product deployment (CD) via Azure DevOps invoking helm chart packaging and deployment.
Mentoring subordinates and colleagues on various challenges faced and sharing knowledge through workshops and hands-on discussions for a collaborative team goal towards customer and business satisfaction.
11/2011 to 06/2021
Senior System Test EngineerSplunk – Hailey, ID,
Review Customer Requirements specifications in design meetings with R&D for the RCS products
Prepare Network diagram and deployment plans based on requirement spec defined for various customer
Create Test plans for various CR received and collaborate Test review meetings
Preparation and/or tweak of Test scripts (Shell, Python, sipp simulator etc..) to suite the test plan for CR specifics.
Run test cases and troubleshoot issues related to IMS Core (CSCF) and RCS (SMSIP, Chat, HTTP FT, PM, LM, Charging, Spam, Archival, S&F etc..)
Protocol knowledge of SIP, DIAMETER (Sh and Ro), MSRP, REST, HTTP etc..
Troubleshoot issues based on logs and pcap traces, along with TRLs and KPIs
Attend review meetings with R&D on issues found in Test Executions and customer defects reported.
04/2010 to 11/2011
Senior QA EngineerPublicis Groupe – Philadelphia, PA,
Create Test strategy and Test configuration bed for the testing of Protocol stack in the SSX-3000 for the Mobile Data Offload(MDO) solution
Testing MDO for the data traffic offload between RNC and SGSN(Iu-PS)
Traffic offload based on routing principles of PBR, OSPF, VLAN etc. configuration in the underlying Cisco based Router.
Test Plans were prepared for stack testing the SCTP, M3UA, SCCP and RANAP protocols handled by the SSX for 3G data offload solution in the UMTS(Iu-PS) architecture
Preparation and build of staging environment for software releases based on defect reports from QA and as well as install, configure, deploy, and test MDO application.
Design and develop scripts based on pre-designed python based frameworks for MDO testing.
05/2004 to 04/2010
Senior EngineerPepsico – Sellersburg, IN,
Worked on Alcatel's S12 and NGN based A5020 MGC for the SS7 and SIP-ISUP interworking projects (BGC, WIND, DTAG)
Troubleshoot issues as whitebox tester, diving into CHILL code, using the HILTI debug tool placing breakpoint and applying patch variables, and recommend code fix areas to Development, making it easier for dev fixes.
Patch field-critical faults using assembly language on BIPSY for lower MTP2 and MTP3 layers of SS7 based code.
Create SS7 links for various customer based Test environments
Protocol knowledge of SIGTRAN, SIP-ISUP(Q.1912.5 spec), SCCP, TCAP, MTPx layers
Execution of SS7 test plans (ISUP) for various projects on A8610 protocol simulator by creating call flow charts and analyze trace on Inet spectra protocol analyzer for validation
Creation SS7 call flow in MGTS Abacus for SS7 ISUP traffic simulation for BHCA threshold test.
Short-term travel to Alcatel Germany for various test phases of DTAG, and ADCC, Shanghai for TGW workshops.
Education and Training
Expected in 08/2003 to to
Bachelor of Engineering: Electronics And Communications Engineering Madurai Kamaraj University - Madurai, GPA:
P.G diploma in Telecom Software Development - TCIL - 2003-2004
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