Entry - level engineer joining Hazen and Sawyer to work on water treatment and management projects. Collaborating on engineering deliverables and participating in fieldwork and site visits.
About the role
- Lead VOIP Engineer designing and optimizing scalable VOIP solutions for a voice AI platform. Collaborate with teams to enhance performance and ensure security in production environments.
Responsibilities
- Design, deploy, and maintain FreeSWITCH and Kamailio-based VoIP solutions.
- Configure and troubleshoot SIP protocols, RTP streams, and media gateways.
- Monitor and optimize high-load production FreeSWITCH and VOIP systems.
- Implement and manage SIP monitoring tools like Homer or other real-time debugging solutions.
- Develop and fine-tune call routing, failover mechanisms, and load balancing strategies.
- Ensure security, scalability, and redundancy in the VoIP infrastructure.
- Troubleshoot and resolve VoIP-related issues in production environments.
- Collaborate with development, DevOps, and support teams to improve system performance.
- Work with SIP Trunks, SBCs (Session Border Controllers), and Media Servers.
- Implement WebRTC-based voice and video solutions.
- Document system configurations, troubleshooting guides, and best practices.
Requirements
- 5+ years of experience in VOIP engineering, particularly with FreeSWITCH and Kamailio.
- Strong expertise in SIP protocol, RTP streaming, and VoIP call flows.
- Experience working in high-load production FreeSWITCH environments.
- Hands-on experience with Homer SIP capture or similar SIP monitoring tools.
- Deep understanding of NAT traversal, STUN/TURN, WebRTC, and ICE frameworks.
- Strong knowledge of load balancing, failover strategies, and traffic optimization.
- Proficiency in Linux administration, networking, and troubleshooting.
- Experience with database integration (Redis, PostgreSQL, or NoSQL solutions).
- Familiarity with WebRTC, Asterisk, OpenSIPS, or RTP Proxy is a plus.
- Ability to write Bash/Python (or Golang) scripts for automation and monitoring.
- Strong problem-solving skills and ability to work in highly available and scalable environments.
Benefits
- Flexible work arrangements
- Professional development
Job title
Job type
Experience level
Salary
Not specified
Degree requirement
Tech skills
Location requirements
Building Chief Engineer overseeing operations of a large school facility. Leading a team and managing mechanical engineering, HVAC systems, plumbing, and electrical systems compliance.
IP Technical Expert Center Engineer troubleshooting complex IP network issues and providing solutions with cross - functional collaboration.
Site Engineer collaborating with the purchasing team at Ford to ensure quality and timely service. Building strong supplier relationships and optimizing costs in vehicle production.
Durability Engineer working with Ford on vehicle durability attributes from concept to production. Championing cross - functional teams to ensure vehicle robustness and reliability during testing.
Junior Engineer creating GCP data - driven solutions for enterprise data architecture. Collaborating with stakeholders on data needs and optimizing performance and reliability.
Gas Turbine Project Engineer in a team - oriented environment focusing on hardware & software design, implementation, testing, and customer support for gas turbine control systems.
Support engineer providing technical assistance to Emerson's customer installations. Involves project management, system configuration, and field support for industrial automation solutions.
Certification Engineer leading agency certifications and qualification testing for hazardous - location electrical products. Collaborating with agencies and engineering teams to ensure compliance and safety standards.
Entry - level Environmental Engineer in a hybrid role supporting environmental consulting projects. Candidate will conduct fieldwork and collaborate with project managers in environmental investigations and remediation efforts.