MUHAMMAD RIZWAN ARSHAD
Rawalpindi
Summary
Results-driven C++ Systems Developer with expertise in real-time telecom protocol analysis, digital signal processing (DSP), and core network data processing. Currently focused on engineering high-performance pipelines for parsing, processing, and persisting 2G/3G signaling packets and call states within robust database architectures. Solid foundation in low-level software engineering, including commercial wireless radio firmware development and AODV mesh networking. Passionate hardware and systems enthusiast, actively engaged in personal projects encompassing DSP algorithm design, custom Linux kernel driver development, and advanced computer architecture involving RISC-V CPU cores and Verilog-based memory controllers.
Overview
4
4
years of professional experience
Work History
Software Engineer (C++)
XFLOW Research STP Islamabad
01.2025 - Current
- At XFlow Research, I am working on a high-throughput C++ network sniffer and deep packet inspection (DPI) engine to intercept and parse 2G/3G signaling and media traffic in real time for access control and security enforcement. Wrote low-latency protocol parsers for SS7, SCCP, BSSAP (2G A-interface), and RANAP (3G Iu-CS) over ASN.1 PER/BER structures to decode Layer 3 Call Control and Supplementary Services messages. Built a stateful session tracking engine to extract subscriber identifiers (IMSI, IMEI) for whitelist/blacklist access enforcement while correlating signaling flows with active RTP media streams across complex call scenarios—including SRVCC handovers, Call Hold and Retrieve, Multi-Party Conference Calls, and Call Forwarding redirections. Used Wireshark to inspect signaling traffic, debug protocol errors, and troubleshoot call routing failures.
System Software Engineer
ZORTIK Technologies, Remote
06.2024 - 12.2024
- My primary focus was on developing a firewall to restrict specific content generated by AI, achieved through fine-tuning and implementing Retrieval-Augmented Generation (RAG) on models such as Phi-3, Gemma2, and Flan-T5. Additionally, I designed and implemented a GRPC client-server application in Python to facilitate efficient communication in distributed systems. My work also involved extensive use of Docker and Kubernetes for containerization, including building Docker images, deploying them via Kubernetes, and developing custom analyzers in Python to monitor pods. Furthermore, I automated error detection in Kubernetes pods, extracted relevant issues, and integrated K8SGPT to generate solutions for identified errors.
Embedded Software Engineer
Rapidev, NSTP NUST Islamabad
11.2022 - 06.2024
- During my tenure at Rapidev, I was actively involved in various technical projects that enhanced my skills and expertise across multiple domains. I worked extensively with STM32 microcontrollers, focusing on Event Stream Processing (ESP) and Digital Signal Processing (DSP) filter design in Python, enabling efficient signal analysis and manipulation. My responsibilities also included firmware development with Real-Time Operating Systems (RTOS), ensuring robust and responsive software for embedded systems. Additionally, I contributed to the development and optimization of an Ad hoc On-Demand Distance Vector (AODV) network, essential for dynamic and adaptive routing in wireless networks. I also worked with Raspberry Pi, utilizing its capabilities for diverse applications and integrating it with Python to develop versatile and scalable solutions. Furthermore, I was involved in socket programming, facilitating effective communication between devices in networked environments.
Education
BS - Computer Science
IQRA University Islamabad
Islamabad08-2022
Skills
- Mesh network design expertise
- Linux kernel programming
- Digital design with Verilog
- Digital signal processing
- Multithreading
- Embedded systems programming
Timeline
Software Engineer (C++)
XFLOW Research STP Islamabad
01.2025 - Current
System Software Engineer
ZORTIK Technologies, Remote
06.2024 - 12.2024
Embedded Software Engineer
Rapidev, NSTP NUST Islamabad
11.2022 - 06.2024
BS - Computer Science
IQRA University Islamabad