Senior Software EngineerDeveloper (VoIP)

Lviv - Ukraine

Monthly Salary: Not Disclosed

Posted on: 30+ days ago

Vacancies: 1 Vacancy

Job Summary

Synergy Beam Solutions providing IT solutions in various areas specialized on creating turnkey solutions for customers in IT Cybersecurity and other Business applications. As part of solutions our company developing the state-of-the-art telecommunication platform for call centers.

Were looking for a talented and motivated Senior VoIP Engineer to join our expanding team for build and maintain our Voip Saas system (voip clustering webrtc recordings carriers and clients troubleshooting.

In this role youll design and build SIP-based systems focused on reliability scalability and security. Youll improve tooling monitoring and observability to ensure smooth real-time call workflows at scale.

Join a mission-driven team tackling complex challenges and redefining how emergencies are managed worldwide. If youre ready to make a real impact wed love to hear from you.

Technical Requirements:

At least 6 years of software engineering experience with 4 years of relevant experience with VoIP/SIP
Experience developing VoIP SIP and Real Time Communication services
Experience developing Linux-based solutions in Lua Python Go or C/C with proficiency ideally in Lua and Python
Understanding of network protocols capture and environments with technology like Wireshark SIPp libpcap and Linux/BSD socket programming
Strong Expirience in development with Freeswitch Kamailio.
Experience working with WebRTC Turn/Turns servers
Experience with AWS Google Cloud CloudFlare
Experience with serial connected devices GSM E1 gateways.
Experience scaling solutions with automated testing tools frameworks and systems

Personal Requirements:

English: B2 (Upper-Intermediate)
Strong communication and interpersonal skills; is a team player with a positive attitude
Expert troubleshooting skills and the ability to analyze problems and associated data structures.
Highly self-motivated; ability to adapt and learn quickly in a fast-paced environment with a strong sense of ownership
You are self-directed and enjoy solving difficult problems in a collaborative environment
You are passionate about building and releasing software that serves a vital purpose

Will be a big plus if you will have:

Experience in Lua Python
Experience working with embedded systems or hardware SIP devices
Experience creating systems to test call flow scenarios and scalability using tools like SIP
Understanding of software design principles with experience in RESTful APIs or RESTful web services
Understanding the principles of routing in a global network and ways to optimize data delivery
Understanding how AI driven features can be implemented and used in VoIP development and end products

Responsibilities:

Advanced troubleshooting to diagnose complex call routing issues codec mismatches and SIP signaling problems as well as analyzing packet captures (PCAPs) logs and traces to identify root causes
Maintaining and optimizing network and protocol performance demonstrating deep expertise in SIP RTP TCP/IP DNS NAT traversal firewall configurations
Support integration and interoperability of PBX systems soft switches SBCs and cloud platforms ensuring smooth interaction between VoIP and other systems
Monitoring quality metrics including MOS scores jitter and latency responding to alerts from monitoring systems and proactively resolving performance degradation issues.
Act as the final escalation point for unresolved L1/L2 issues coordinating with carriers and vendors to address service-impacting incidents effectively.
Lead architecture development and deployment of SIP and voice applications including transcription AMD/VMD and AI integrations while optimizing performance scalability and accessibility.
Collaborate with Product Engineering and stakeholders to design solutions for critical challenges apply best-in-class development practices to ensure ICC product reliability and actively participate in code reviews and standups to share knowledge and improve team processes.
Own meaningful parts of our platform have an impact grow with the company.

Join a mission-driven team tackling complex challenges and redefining how emergencies are managed worldwide. If youre ready to make a real impact wed love to hear from you.

Technical Requirements:

At least 6 years of software engineering experience with 4 years of relevant experience with VoIP/SIP
Experience developing VoIP SIP and Real Time Communication services
Experience developing Linux-based solutions in Lua Python Go or C/C with proficiency ideally in Lua and Python
Understanding of network protocols capture and environments with technology like Wireshark SIPp libpcap and Linux/BSD socket programming
Strong Expirience in development with Freeswitch Kamailio.
Experience working with WebRTC Turn/Turns servers
Experience with AWS Google Cloud CloudFlare
Experience with serial connected devices GSM E1 gateways.
Experience scaling solutions with automated testing tools frameworks and systems

Personal Requirements:

English: B2 (Upper-Intermediate)
Strong communication and interpersonal skills; is a team player with a positive attitude
Expert troubleshooting skills and the ability to analyze problems and associated data structures.
Highly self-motivated; ability to adapt and learn quickly in a fast-paced environment with a strong sense of ownership
You are self-directed and enjoy solving difficult problems in a collaborative environment
You are passionate about building and releasing software that serves a vital purpose

Will be a big plus if you will have:

Experience in Lua Python
Experience working with embedded systems or hardware SIP devices
Experience creating systems to test call flow scenarios and scalability using tools like SIP
Understanding of software design principles with experience in RESTful APIs or RESTful web services
Understanding the principles of routing in a global network and ways to optimize data delivery
Understanding how AI driven features can be implemented and used in VoIP development and end products

Responsibilities:

Advanced troubleshooting to diagnose complex call routing issues codec mismatches and SIP signaling problems as well as analyzing packet captures (PCAPs) logs and traces to identify root causes
Maintaining and optimizing network and protocol performance demonstrating deep expertise in SIP RTP TCP/IP DNS NAT traversal firewall configurations
Support integration and interoperability of PBX systems soft switches SBCs and cloud platforms ensuring smooth interaction between VoIP and other systems
Monitoring quality metrics including MOS scores jitter and latency responding to alerts from monitoring systems and proactively resolving performance degradation issues.
Act as the final escalation point for unresolved L1/L2 issues coordinating with carriers and vendors to address service-impacting incidents effectively.
Lead architecture development and deployment of SIP and voice applications including transcription AMD/VMD and AI integrations while optimizing performance scalability and accessibility.
Collaborate with Product Engineering and stakeholders to design solutions for critical challenges apply best-in-class development practices to ensure ICC product reliability and actively participate in code reviews and standups to share knowledge and improve team processes.
Own meaningful parts of our platform have an impact grow with the company.