C Developer

About Position:

We are seeking a highly skilled developer with strong expertise in C, Perl, and Python to design, develop, and maintain high-performance RTP/VoIP systems. The role involves working on media processing engines, control APIs, and secure communication protocols for real-time voice and video applications

• Role: C Developer

• Location: All Persistent Locations

• Experience: 5 to 10 Years

• Job Type: Full Time Employment

What You’ll Do:

• Develop and optimize RTP/VoIP components using C for high-performance packet processing with linux.
• Implement automation, testing, and integration scripts in Perl and Python – good to have
• Build and maintain software using GNU Make and manage packaging with deb.
• Integrate and extend control APIs: NG (Kamailio), CLI, HTTP/WebSocket, and MQTT.
• Manage state and statistics using Redis.
• Implement and maintain encryption protocols (AES-CM, AES-F8, DTLS-SRTP) and codec handling (G.711, Opus, AMR, etc.).
• Analyze and troubleshoot RTP/SIP traffic using Wireshark and other diagnostic tools.
• Ensure compliance with VoIP standards and protocols (RTP, SIP, VoIP).
• Collaborate with DevOps for deployment and scaling in Linux environments.

Expertise You'll Bring:

• Strong programming skills in C, with scripting experience in Perl and Python.
• Deep understanding of RTP, SIP, and VoIP protocols.
• Experience with GNU Make, deb packaging, and Linux build systems.
• Familiarity with Redis for state management.
• Knowledge of encryption standards and secure media transport (DTLS-SRTP, AES variants).
• Hands-on experience with Wireshark for packet analysis.
• Understanding of audio/video codecs and transcoding.

Benefits:

• Competitive salary and benefits package
• Culture focused on talent development with quarterly growth opportunities and company-sponsored higher education and certifications
• Opportunity to work with cutting-edge technologies
• Employee engagement initiatives such as project parties, flexible work hours, and Long Service awards
• Annual health check-ups
• Insurance coverage: group term life, personal accident, and Mediclaim hospitalization for self, spouse, two children, and parents

Values-Driven, People-Centric & Inclusive Work Environment:

Persistent Ltd. is dedicated to fostering diversity and inclusion in the workplace. We invite applications from all qualified individuals, including those with disabilities, and regardless of gender or gender preference. We welcome diverse candidates from all backgrounds.

• We support hybrid work and flexible hours to fit diverse lifestyles.
• Our office is accessibility-friendly, with ergonomic setups and assistive technologies to support employees with physical disabilities.
• If you are a person with disabilities and have specific requirements, please inform us during the application process or at any time during your employment

Let’s unleash your full potential at Persistent -persistent.com/careers

“Persistent is an Equal Opportunity Employer and prohibits discrimination and harassment of any kind.”