OpenSIPS VoIP Developer

View full description

Requirements:

• At least 2 years of experience in OpenSIPS system development, with a focus on central codebase development.
• Minimum 5 years of solid experience in C & C++ based multithreaded application development.
• Experience in development and troubleshooting in a Linux environment, IPCs, and modern locking primitives.
• Experience in development on an OpenSIPS module.
• Familiarity with SIPWise RTPEngine is a plus.
• Comfortable with gdb or equivalent for debugging multithreaded applications.
• Experience with Linux C development and profiling tools such as valgrind and gprof.
• Knowledge of Real Time Communication protocols and stacks (SIP, SDP, WebRTC/RT, SRTP).
• Strong experience with Wireshark and telephony protocol dissectors.
• Familiarity with Python, GitHub, Atlassian tools (JIRA, Confluence), Jenkins/CircleCi.
• Experience with monitoring systems like Prometheus, Zabbix.
• Solid scripting skills (shell scripts, Perl, Ruby, Python).
• Proven experience in installing, configuring, and troubleshooting UNIX/Linux-based environments.
• Strong troubleshooting skills in different network layers.
• Experience in administration and performance tuning of application stacks.
• Experience with automation software like Puppet, cfengine, Chef, Ansible.

Responsibilities:

• Maintain and improve existing OpenSIPS code, including common codebase and Convoso-specific developments.
• Tune OpenSIPS performance, including CPU, memory usage, I/O.
• Create and maintain OpenSIPS configurations using DSL.
• Manage and monitor installed systems, networks, and infrastructure.
• Provide ongoing support and maintenance for the OpenSIPS codebase.
• Document to ensure accurate and current information is available.
• Assist in coordination of various teams for testing and evaluation.
• Install, configure, and test operating systems and application software.
• Ensure the highest level of systems and infrastructure availability.
• Evaluate existing systems and provide technical direction.
• Run diagnostics to resolve customer-reported issues.
• Optimize work processes and utilize risk management tools.