A S Krishna Email and Phone Number

Have a Professional experience of over 6+ years in the field of 4G IMS Domain and 3G/4G Packet Core Domain. Worked under Clients like AT&T and Cisco. Have worked in End-to-End Health Check for Basic Mobility Sessions (4G to 3G, 3G to 4G, Messaging) based on different zones of subscribers under AT&T Client. Worked as a Manual Tester for Specific LTE Mobility Packet Core Nodes like TDF, S-GW, P-GW, MSP (Ericsson's Multi-Services Proxy) and PCRF (dealt with OSI Layer 5 Session - GTPv2 and Diameter Protocols and S5/S8, Gx interfaces) for AT&T Client where performed Regression, Integration and Sanity testing, also raised several Defects for issues faced during Network Testing. Also Worked under Cisco Client for Packet Core Network Automation using iTCL and became proficient with Linux & FTP Network Commands. Currently working as a LTE EPC QA Engineer for AT&T Client Network Automation Development using Python under Robot Framework for an UI based solution called ANT Portal (AT&T Automated Network Testing Portal) embedded with ITAP (Integrated Testing and Automation Platform) where I have raised both Defects(Network or Product Issues) and Bugs (Code or Implementation Issues). Have basic knowledge on 5G related features and important nodes under 5GC (5G Core) like AMF, SMF, UPF and Radio Nodes like DCNR(Dual Connectivity New Radio) and MEC (Multi-Access Edge Computing), ODC (On-Demand Commands). In my field of work, got opportunity to work with Simulation Tools( Opentool, IxLoad LTE Simulator, Spirent Landslide), Real UE Tools (JDSU, ME - Mobility Experience & MCB - Mobile Cell Block), SSH Client Tools (XShell, Mobaxterm, Putty, WinSCP) and Wireshark for Logs Validation and Packet Tracing. I'm a keen and diligent person when it comes to work so that I'll never compromise when it comes to completing my allocated tasks. I'm very adaptable to any kind task within my Area of Expertise. Professionally I'm more interested to work on Design and Development of Network Architecture. Eagerly looking for a career which has well poised work-life balance and job satisfaction.