Bikash Ranjan Dash

Increased product reliability by conducting rigorous performance, security, and usability testing.

• Ensured compliance with relevant industry standards by adhering to strict quality assurance guidelines throughout all stages of software development.
• Contributed to successful product launches by executing end-to-end system integration tests that validated functionality across platforms.
• Defined testing and acceptance strategies and determined quality assurance benchmarks.
• Developed extensive documentation for various phases of the testing process, supporting efficient knowledge transfer among team members.
• Streamlined communication between testers and developers through detailed defect reporting and tracking systems.
• Cultivated strong working relationships with key project stakeholders, enabling seamless integration between teams during product roll-out initiatives.
• Improved project delivery timelines by efficiently managing testing resources and schedules.
• Reviewed bug reports and error logs, translating data into digestible reports for senior leadership personnel.
• Updated ongoing testing procedures for software to account for changes resulting from post-release patches.
• Monitored resolution of bugs, tested fixes, and helped developers tackle ongoing problems by providing QA perspective.
• Evaluated function, performance and design compliance of every product against design standards and customer needs.
• Created parameters for automated testing and diagnostic protocols on system.

• 5G and IMS Network Testing for different nodes (SBC,TAS,AMF, PCF, SMF, AUSF, UPF)
• Experience in Mavenir IMS and RCS end to end Network Delivery with Troubleshooting experience in SIP, Diameter, SMPP, MSRP, RTP SDP, Protocols.
• Basic Understanding of Cloud Native platform with Network planning and designing.
• Experience in Telecom Nodes (SBC, TAS, HSS, ) and integration on OpenStack Cloud platform, for Cloud platform and solutions.
• Assist in solving issues with the cloud services & platform related to network connectivity, partnering with our wider networking teams
• Hands on experience of end-to-end call flows - Voice CS and IMS, SMS, Vo WiFi
• Deep understanding of LTE and 5GNR modulation as well as 3GPP standard
  Knowledge of 3GPP specifications related to LTE/5G
• Expertise in network protocols & communication protocols and internals (5G, 4G, LTE, IMS, IP (TCP, UDP, SCTP), Ethernet, RTP).
• Experience working with Openstack, VMware, and other cloud solutions.
• Knowledge and working experience in Kubernetes and Docker Environment.
• Having hands on experience in VNF/CNF and SDN Architecture.
• Experience working with Openstack, VMware, and other cloud solutions
• Experience in system tracing and protocol flow analysis during troubleshooting using different Tools.
• Strong knowledge of server infrastructure, virtualization, cloud computing, Kubernetes and Container Management.
• Build cloud network connectivity architectures & systems. Participate in design reviews and deliver on those designs.
• Experience in working on testing tools, such as Spirent Landslide used for testing/validation of the core network solutions.
• Understanding of end-to-end call flow scenarios, such as - VoLTE, LTE, VoNR, EPS fallback, SMS, MMS, E911
• Maintain network documentation, run-books, diagrams, and network assets in the configuration management database.

• Worked with client issues in VOIP Platform, SBCs and troubleshoot the cases on LTE, SIP, DIAMETER and RTP
• Support Troubleshooting issues in the areas of 3GPP, VOLTE, RCS nodes and entities, Call Session Control Function (CSCF)HSS, TAS, MRF (Announcement Session)
• Troubleshoot experience with the protocols like SS7, ISUP, SIP, DNS and Diameter Protocols for 4G/5G & VoLTE Network.
• Inbound/Outbound Voice & Data Roaming call flows, International SMS, International MMS, & MNP and Core network management.
• Configuration Management, APN Management and Assign MSISDN, Rate Plan, Service Plan, Service Coverage, APN, IP address, State to the one more device
• Experienced on Onboarding enterprise customers to provide IoT, private networks, and other MEC Services
• Reporting for Registration report, Device session report, eSIM Log report, SIM Inventory report through Connectivity management platform.

• Expert in creation and execution of design and requirement docs for Telco Cloud Implementation (to perform activities on the network)
• Understanding with hands on experience in Ericsson HSS, SBG, MTAS Server and OCS for Testing and Support.
• Have done different call scenario testing like VOLTE Registration SRVCC & Vo WiFi Call flows.
• Troubleshoot VOLTE call issues for different customers based on SLA.
• Working on E2E test executions and Provide Voice E2E test status and plans in the project meeting.
• Produce and track risk-based test approaches, acceptance test objectives with detailed procedures and test stages in overall project test plan.
• Analysis of high level TCs and Test planning, E2E test execution based on HLD and
  Provide regular and ad-hoc status reports as requested by the Test Manager.

Vodafone Group IVC Project:

• Design and Troubleshooting experience for Core switching platform for international voice calls.
• Raised, triaged and prioritized defects from in-house testing, customer usage and live defects.
• Conducted quality testing on projects and issues according to strict processes and timescales.
• Explored and created new ways to resolve problems with processes, technology or team members to improve overall efficiency.
• Worked closely with various teams, checking and maintain high quality standards throughout software development lifecycle.
• Reported testing progress to line management, communicating effectively and escalating where appropriate.

• Take ownership of customer issues, including initial troubleshooting, identification of root cause and issue resolution or escalation
• Try to share customer expectations on response quality, timeliness of responses and overall customer experience
• Serve as internal and external point of contact on customer escalations and ensure customer issues are resolved as expediently as possible.
• Maintained compliance with service-level agreements with fast, knowledgeable resolution for diverse issues.
• Resolved customer queries and problems using effective communication and providing step-by-step solutions.
• Tier 3 support on Word smart (Unified Communication Platform) and Smart Box (Unified Storage Product)
• SIP call flows analysis and documenting the same on standard project related document.
• Experience in analyzing the SIP call flows using Wireshark tool and Configuring Cisco soft Phones, IP Phones.
• Worked with CDR Generation and Knowledge and Understanding of VOIP/IMS, SIP trucking architecture Security (TLS, SRTP or IPSEC).
  

• Telecom experience both as an operation and maintenance and as a NOC Engineer in VOIP and various Telecom protocol-based application with VOIP Technology.
• Performing customer’s test cases in local lab i.e., manual testing of different scenarios including negative testing and scenario bases testing.
• Experienced in working with LINUX (Sparc&x86) Server.
• Working Knowledge in Class4 Dialogic switch and Media Gateway design and configuration .
• Experienced in Protocols like SIP, SS7, MGCP, SCTP, TCP/IP and good understanding of complete end to end wireless network architecture .
• Worked with Dialogic Control Switch & Media Gateway and Firewall, Dialogic SBC.
• Responsible for the configuration, integration, implementation, and operational support of Voice solutions.
• Fault management, maintain the service for mobility and data enterprise customer and worked on incident management tool like Oracle Remedy Tool..
• Demonstrated consistent hard work and dedication to achieve results and improve operations.