VoIP Support Engineer

Sunil KumarNayak

Skilled software engineer specializing in VoIP, C, and Linux. Building scalable signaling infrastructures and real-time communication systems.

About Me

Dedicated and skilled VoIP Support Engineer with good hands-on experience in C programming and Linux environments. Proficient in analyzing, troubleshooting, and resolving complex technical issues, ensuring seamless functionality of VoIP systems and related applications.

"Troubleshooting isn't just about fixing the problem; it's about understanding the system so well that the solution becomes obvious."

Hobbies

Sketching
Playing Guitar
Writing

Technical Arsenal

A comprehensive set of tools, technologies, and methodologies I leverage to deliver excellence.

Core Technologies

CPythonData StructuresAlgorithmsSQL (Basics)RDBMS

VoIP & Telecom

SIPFreeSWITCHPBXICEWebRTCVoIP Architecture

Tools & Platforms

LinuxWindowsGDBValgrindWiresharkGitJiraBeyond-Compare

Soft Skills

Interpersonal SkillsLogical ReasoningTime ManagementProblem Solving

Professional Experience

Software Engineer | Associate II

July 2025 - Present
RSTACK SolutionsBengaluru

Deploying and maintaining FreeSWITCH and PBX systems. Diagnosing SIP signaling issues and implementing real-time health monitoring dashboards.

Software Engineer | Associate II

Feb 2023 - July 2025
Capgemini EngineeringGurugram

Worked on core telecom products like Sip_Stack and UATK using C and Linux. Debugged complex VoIP issues using GDB and Valgrind.

Technical Initiatives

SIP Stack Development

Contributed to the development of core telecom products including Sip_Stack and UATK. Enabled major clients like Ericsson and Mavenir to build robust SIP-based applications.

CLinuxSIPTelecom

FreeSWITCH Infrastructure

Deployed and configured FreeSWITCH and PBX systems for production environments. Implemented comprehensive health monitoring dashboards to ensure 99.9% uptime.

FreeSWITCHPBXDevOpsMonitoring

VoIP Debugging & Analysis

Resolved critical signaling issues within VoIP systems using GDB and Valgrind. Diagnosed complex one-way audio problems and call drop scenarios effectively.

GDBValgrindWiresharkDebugging

Education & Achievements

Education

Master's in Computer Applications (MCA)

TACT

2022

Bachelor of Science (B-Sc)

Utkal University

2020

Certifications

NPTEL: Data Analysis with Python

NPTEL: Internet of Things

NPTEL: Intellectual Property

Data Entry Operator

Awards

WOW Excellence Award

Recognized for Team Excellence and outstanding contribution.

Let's Connect

I'm always open to discussing VoIP architecture, real-time communications, or new engineering opportunities.