OpenSIPS VoIP Developer

Most roles at Convoso function as "hybrid" with some opportunities for travel to in-person business events and company meetings. For remote positions, Convoso's U.S. hiring is open to candidates who are residents of the following states: AL, AZ, CA, CO, CT, FL, GA, IL, IN, MA, MI, NC, NJ, NV, NY, OH, PA, SC, TX, UT

The Job:

We are seeking an OpenSIPS VoIP Developer who will be responsible for assessing, designing, upgrading, and maintaining systems as well as brainstorming possible improvements that can be made to a system in the future.

What You'll Be Doing:

• Maintain and improve existing OpenSIPS code, including common codebase and Convoso-specific developments.
• Tune OpenSIPS performance, including CPU, memory usage, I/O (UDP buffers, context switches, resource contention, etc.)
• Create and maintain OpenSIPS configurations using DSL.
• Manages and monitors installed systems, Networks, and infrastructure for the organization to be in line with company guidelines or SOP (standard operating procedure).
• Provide ongoing support and maintenance for the OpenSIPS codebase as needed.
• Provide and communicate the best practices and specific detailed information for network hardware and software selection.
• Provide planning for future capacity requirements.
• Provide documentation as required to ensure accurate and current information is available.
• Assists in the coordination of various teams testing and evaluating for the development of design and its implementation including network hardware and software selection, including present and future capacity requirements.
• Installs, configures, and tests operating systems, application software, and system management tools.
• Ensures the highest level of systems and infrastructure availability.
• Evaluate the existing systems and provide the technical direction to support staff.
• Collaborates with other professionals to ensure high-quality deliverables within organization guidelines, policies, and procedures.
• Run diagnostics to resolve customer-reported issues.
• Deals with work process, optimization methods, and risk management tools in the given projects for successful accomplishments according to the requirements of the stakeholders.

Who You Are:

• At least 2 years of experience in OpenSIPS system development, with a focus on central codebase development.
• Solid experience in C & C++ based multithreaded application development; minimum 5 years of experience.
• Experience in development and troubleshooting in a Linux environment based on IPCs (shared memory, signaling…) both legacy and modern locking primitives (mutexes, understanding of process starvation, etc.)
• Experience in development on an OpenSIPS module.
• Familiarity with SIPWise RTPEngine would be a major plus.
• Comfortable with gdb or equivalent and debugging problems associated with real time, multithreaded applications.
• Experience with common linux C development tools such as well as profiling tools such as valgrind and gprof.
• Wide knowledge of Real Time Communication protocols and technologies and stacks (SIP, SDP, WebRTC/RT, SRTP)
• Strong experience with Wireshark and telephony protocol dissectors.
• Experience with Python, Github, Atlassian tools (JIRA and Confluence), Jenkins/CircleCi would be helpful.
• Experience with monitoring systems (Prometheus, Zabbix, etc…)
• Solid scripting skills (e.g., shell scripts, Perl / Ruby / Python).
• Proven working experience in installing, configuring, and troubleshooting UNIX/Linux-based environments.
• Strong troubleshooting skill in different network layers, esp. layer 2 & layer 3 up to layer 7.
• Solid experience in the administration and performance tuning of application stacks (e.g., Tomcat, Apache, Nginx, Haproxy or Env…)
• Experience with automation software (e.g., Puppet, cfengine, Chef, Ansible or Salt) (is a plus).
• Flexibility to work a variety of shifts with availability to work overtime.
• BS/MS degree in Computer Science, Engineering or a related subject.

Work Perks Worth The Hype:

• Competitive compensation package
• Stock options
• 100% covered premiums for employees; Medical, Dental, Basic life insurance, Long term disability
• Affordable Vision plan and optional FSA
• PTO, Paid Sick Time, Holidays, Bereavement time, Parental Leave
• Your birthday off
• 401k program with generous company match
• No cost Employee Assistance Program and Travel Assistance
• Monthly Gym membership reimbursement
• Monthly credits toward food & beverage
• Company Outings
• On and offsite team building events
• Paid training for departments
• Apple laptop (most roles)
• And a team of highly experienced and kind colleagues!

HQ Office:

• Casual office environment & dress
• Daily catered lunches
• Fully stocked kitchen (Dietary restriction-friendly)
• Happy Hours
• Monthly Massages
• On-site Car Wash 
• Free Parking 

Compensation:

The base salary range is: $155,000 - $170,000.

The Base Pay Range for this position is based on the industry benchmark for position, function, level and the company's compensation strategies. However, final offers may vary from the amount listed based on geography, candidate experience and expertise, and other objective business. Convoso’s compensation package also includes equity for all eligible U.S full time roles and exceptional benefits, including generous 401k match.

Your California Privacy Rights:

As a California resident who is an applicant to be an employee of Convoso, you have certain rights under California law with respect to information collected by Convoso in the course and scope of its evaluation of your application. The types of information Convoso collects and your rights with respect to that information are contained in Convoso’s privacy policy, which you can review by going to https://www.convoso.com/privacy-policy/.