Senior Software Engineer – FreeSWITCH and Lua

About the role

Netrix Global is seeking a passionate Senior Software Engineer with deep expertise in FreeSWITCH and Lua to join its telephony development team. You will work on complex voice‑over‑IP challenges, driving innovative solutions that keep the platform reliable and future‑proof.

Key responsibilities

• Research, design, and implement scalable telephony applications using FreeSWITCH and Lua.
• Analyze and resolve intricate technical issues across the telephony stack.
• Integrate FreeSWITCH with external systems and develop custom modules to meet business requirements.
• Contribute to the overall architecture, ensuring security, performance, and maintainability.
• Collaborate with developers, system administrators, and stakeholders to deliver high‑quality solutions.

Required profile

• Minimum 2 years of hands‑on development with FreeSWITCH and Lua.
• Strong understanding of FreeSWITCH architecture, modules, and configuration.
• Proficiency in C for reading and understanding core code.
• Solid grasp of VoIP protocols (SIP, RTP), codecs, and general telephony concepts.
• Experience working in a Linux environment.
• Self‑motivated learner with excellent written and verbal communication skills.

Required skills

• FreeSWITCH
• Lua
• C
• SIP
• RTP
• Linux