Muhammad Talha Bin Zia

SonarQube is a third-party paid service that provides static code analysis across project codebase, identifies security hotspots and potential threats, and suggests best practices.

Based on this analysis, I removed all possible issues across the entire SI-Avaya's codebase.

This activity provided me chance to learn and further improve my understanding.

VHT is a third-party patent solution deployed on some major contact center accounts, such as the United Health Group, T-mobile, and Verizon.

It was completely integrated with Afiniti's V6 software by developing a C++ back-end microservice from scratch. It supports a wide range of client customization.

A multi-tenant, multi-threaded VHT integration service was implemented. It is responsible for communication between VHT services and Afiniti.

The functionality developed was divided into three major areas:

1. Initializing queue mappings.
2. Pulling queue stats. This involves constantly loading stats from VHT stats servers asynchronously. One thread per server is used.
3. Generating and sending notifications. This involves receiving queue-based events from other Afiniti services.

HA was designed and implemented for parallel communication with multiple VHT servers and shifted to backup servers in case of failure using C++ futures.

A gSOAP solution was developed using portable components (POCO) HTTP and pugixml to support SOAP-based communication. SSL and new WSDL support were later added.

I performed a stress testing load of 1,500 calls per minute using an in-house simulator.

Telemetry services help monitor service health by listening on multiple stats.

All required stats, including average round trip times, warnings, and error counts, were calculated and delivered to the monitoring service to be available for support teams across multiple accounts.

I improved the performance of the in-house C++ logger library by 2x. Timestamp generation was reduced from once per log to once per time change. Mid-level conversion from log parameters to log objects was avoided, saving precious string conversion and copying cycles.

UBPS is a critical component of bill payment infrastructure, processing a high volume of transactions for banks. Self-handled utility companies had all transaction logic implemented in C++ IRIS switch, while third-party telecom companies used SOAP-based APIs consumed using gSOAP for C++. C# code was converted to C++ microservices. I worked with a DevOps team to conduct stress tests. Ultimately, Telenor chose TPS UBPS due to its proven reliability, robustness, and track record, over other top-notch solutions.

Improved the C-based RCoS+ platform for IoT devices. I provided the base functionality to the application teams. The platform comprises an event handler, scheduler, threading support, base devices, and drivers.