Senior Software Engineer - VoIP expert

Important Information 

Location: Brazil
Job Mode: Full-time 
Work Mode: Work from home

Job Summary

The objective of this role is to contribute to the development of a scalable and high‑performance Voice platform by building production‑ready VoIP solutions, addressing complex technical challenges, and optimizing real‑time communication pipelines. The position focuses on SIP‑based systems, FreeSwitch integration, and backend service development, while collaborating with DevOps teams to deploy and operate solutions in AWS and ensuring code quality through reviews, architecture discussions, and documentation.  

Responsibilities and Duties

• Actively contribute to the codebase by writing production code, prototyping critical components, and resolving complex technical challenges;
• Develop and maintain VoIP solutions for the Voice platform, including SIP signaling, traffic routing, and global scalability;
• Lead the integration and customization of FreeSwitch as a core media server and softswitch platform;
• Develop robust backend services using C, Java, Python, Golang;
• Collaborate with DevOps and infrastructure teams to deploy and maintain solutions on cloud environments (AWS);
• Participate in code reviews, architectural discussions, and technical documentation;
• Investigate and resolve performance bottlenecks in real-time communication pipelines.