Senior Software Engineer - VoIP

CaptionCall by Sorenson • Salt Lake City, UT

9h

About The Position

Come be a part of our mission and make a meaningful and positive impact with the
industry leading provider of language services for the Deaf and
heard-of-hearing!

Our Mission…Harnessing the power of language, we connect diverse people and
enrich the human experience.   

Our Vision…To provide global language services that expand opportunities,
nurture belonging, and empower the world to connect beyond words.   

As one of the world’s leading language services providers, Sorenson combines
patented technology with human-centric solutions. We strive to increase
diversity, equity, inclusion, and accessibility for underrepresented people
through communication solutions for all: call captioning and video relay
services, over-video and in-person sign language and spoken language
interpreting, translation, real-time captioning, and post-production language
services.

Sorenson’s impact vision and plan extends to supporting employment opportunities
for diverse employees, customers, and communities.  As a minority-owned company,
we are committed to expanding opportunities for underserved communities while
promoting an inclusive workplace for our own employees.

Requirements

• Strong knowledge of VoIP protocols & troubleshooting
• Knowledge of VoIP Platforms such as Kamailio & RTPengine
• Strong understanding of Linux Operating systems
• Experience with containerization technologies such as docker and orchestration platforms such as Kubernetes / Amazon EKS
• Familiarity with IaC & Configuration Management tools such as Terraform, Ansible, Packer
• Git, GitHub & GitHub Actions.
• Experience with one or more scripting languages (python, bash)

Responsibilities

• Follow engineering best practices to develop high quality products in a committed team
• Manage and optimize VoIP infrastructure including SIP proxies, media proxies, and media servers (e.g., Kamailio, RTPengine, FreeSWITCH). 
• Develop and maintain software for various APIs used in a VoIP environment, e.g. provisioning and QA automation. 
• Design and implement automated QA testing & validation to cover common RTC scenarios. 
• Monitor and troubleshoot VoIP traffic, call routing, and signaling issues using tools like Wireshark, SIPp, and HOMER. 
• Enforce security and compliance standards for RTC infrastructure (e.g. Firewall and Security Group Rules, TLS). 
• Design, implement, and maintain CI/CD pipelines for RTC, VoIP, and other infrastructure components. 
• Automate provisioning and configuration of RTC systems using tools like Ansible, Packer, & Terraform,  
• Monitor, analyze and troubleshoot issues related to SIP signaling, media transport and WebSocket communication.
• Work with AWS services - EC2, ECS, S3, Lambda, ELB, IAM, DynamoDB, Kinesis, CloudWatch, etc. 
• Ensure high availability and disaster recovery for production services. 
• Participate in on-call rotation, incident response, and root cause analysis for service outages.

Benefits

• Paid Vacation Time and Paid Sick Time and Paid Holidays
• 401k 6% match with immediate vesting
• Nationwide Medical Insurance plans and coverage (Medical, Dental/Orthodontia, Vision)
• TeleDoc
• HSA company match
• 3 Medical plan options including a Low Deductible PPO Medical Plan Offering
• Employee Assistance Program
• Engaged Employee Resource Groups
• Outstanding Learning and Career Development Opportunities

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level