Senior Linux Systems Engineer
Reston, VA ยท On-site
Building and configuring software-based phone systems such as Asterisk or Freeswitch * Building and configuring monitoring systems like Prometheus, Nagios, or Zabbix. * Building and configuring ELK
Reston, VA ยท On-site
Building and configuring software-based phone systems such as Asterisk or Freeswitch * Building and configuring monitoring systems like Prometheus, Nagios, or Zabbix. * Building and configuring ELK
Reston, VA ยท On-site
Building and configuring software-based phone systems such as Asterisk or Freeswitch * Building and configuring monitoring systems like Prometheus, Nagios, or Zabbix. * Building and configuring ELK
Experience with SBCs and software platforms (e.g., Metaswitch, Sonus/Ribbon, Oracle, SBC, OpenSIPS, Kamailio, FreeSWITCH, Asterisk) * Familiarity with AI development workflows and tools is strongly ...
Quick apply
Experience with SBCs and software platforms (e.g., Metaswitch, Sonus/Ribbon, Oracle, SBC, OpenSIPS, Kamailio, FreeSWITCH, Asterisk) * Familiarity with AI development workflows and tools is strongly ...
Building and configuring software-based phone systems such as Asterisk or Freeswitch * Building and configuring monitoring systems like Prometheus, Nagios, or Zabbix. * Building and configuring ELK
Building and configuring software-based phone systems such as Asterisk or Freeswitch * Building and configuring monitoring systems like Prometheus, Nagios, or Zabbix. * Building and configuring ELK
Sunnyvale, TX ยท On-site
$80K - $173K/yr
Experience with real-time communication platforms such as FreeSWITCH, Kamailio, Asterisk, or similar technologies Mandatory Skills: Fullstack Java Enterprise. Experience: 8-10 Years. The expected ...
Sunnyvale, TX ยท On-site
$80K - $173K/yr
Experience with real-time communication platforms such as FreeSWITCH, Kamailio, Asterisk, or similar technologies Mandatory Skills: Fullstack Java Enterprise. Experience: 8-10 Years. The expected ...
Deep hands-on experience with FreeSWITCH, Kamailio, or OpenSIPS * Experience with UCaaS or carrier-grade SIP platforms (NetSapiens preferred) * Experience with SBCs such as Ribbon, AudioCodes ...
Deep hands-on experience with FreeSWITCH, Kamailio, or OpenSIPS * Experience with UCaaS or carrier-grade SIP platforms (NetSapiens preferred) * Experience with SBCs such as Ribbon, AudioCodes ...
Milpitas, CA ยท On-site
$142K - $188K/yr
... XMS, FreeSWITCH, and Asterisk. โข Strong experience in C++ and Java development for real-time communication applications. โข Hands-on experience analyzing SIP, RTP, and T.38 FAX PCAPs using ...
Quick apply
Milpitas, CA ยท On-site
$142K - $188K/yr
... XMS, FreeSWITCH, and Asterisk. โข Strong experience in C++ and Java development for real-time communication applications. โข Hands-on experience analyzing SIP, RTP, and T.38 FAX PCAPs using ...
Herndon, VA ยท On-site
$104K - $166K/yr
... Freeswitch โข Building and configuring monitoring systems like Prometheus, Nagios, or Zabbix. โข Building and configuring ELK โข Experience configuring Cisco, Juniper, and similar networking ...
Herndon, VA ยท On-site
$104K - $166K/yr
... Freeswitch โข Building and configuring monitoring systems like Prometheus, Nagios, or Zabbix. โข Building and configuring ELK โข Experience configuring Cisco, Juniper, and similar networking ...
Atlanta, GA ยท On-site +1
Experience with Asterisk, FreePBX, FreeSWITCH, Session Border Controllers (SBCs), or similar communications technologies. * Experience with Microsoft Teams integrations, SIP Trunking, messaging ...
Atlanta, GA ยท On-site +1
Experience with Asterisk, FreePBX, FreeSWITCH, Session Border Controllers (SBCs), or similar communications technologies. * Experience with Microsoft Teams integrations, SIP Trunking, messaging ...
$126K - $166K/yr
Angular, Node JS, AWS Chime, FreeSwitch * Infrastructure: Google Cloud, AWS, GitHub, and on-premise servers * Project management: Azure DevOps Notable Projects & Accomplishments * Telemedicine ...
Quick apply
$126K - $166K/yr
Angular, Node JS, AWS Chime, FreeSwitch * Infrastructure: Google Cloud, AWS, GitHub, and on-premise servers * Project management: Azure DevOps Notable Projects & Accomplishments * Telemedicine ...
Salt Lake City, UT ยท On-site
$99K - $166K/yr
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 ...
Salt Lake City, UT ยท On-site
$99K - $166K/yr
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 ...
Sunnyvale, CA ยท On-site
$80K - $173K/yr
Experience with real-time communication platforms such as FreeSWITCH, Kamailio, Asterisk, or similar technologies Mandatory Skills: Fullstack Java Enterprise. Experience: 8-10 Years. The expected ...
Sunnyvale, CA ยท On-site
$80K - $173K/yr
Experience with real-time communication platforms such as FreeSWITCH, Kamailio, Asterisk, or similar technologies Mandatory Skills: Fullstack Java Enterprise. Experience: 8-10 Years. The expected ...
Herndon, VA ยท On-site
$104K - $166K/yr
Building and configuring software-based phone systems such as Asterisk or Freeswitch Building and configuring monitoring systems like Prometheus, Nagios, or Zabbix. Building and configuring ELK ...
Herndon, VA ยท On-site
$104K - $166K/yr
Building and configuring software-based phone systems such as Asterisk or Freeswitch Building and configuring monitoring systems like Prometheus, Nagios, or Zabbix. Building and configuring ELK ...
Dallas, TX ยท On-site +1
Experience with Asterisk, FreePBX, FreeSWITCH, Session Border Controllers (SBCs), or similar communications technologies. * Experience with Microsoft Teams integrations, SIP Trunking, messaging ...
Dallas, TX ยท On-site +1
Experience with Asterisk, FreePBX, FreeSWITCH, Session Border Controllers (SBCs), or similar communications technologies. * Experience with Microsoft Teams integrations, SIP Trunking, messaging ...
Agoura Hills, CA ยท On-site
Experience with UCaaS and CCaaS platforms (e.g., Zoom, Five9, FreeSWITCH) * Experience with Zoom Phone and Zone Contact Center is a plus. * Strong troubleshooting and problem-solving skills
Agoura Hills, CA ยท On-site
Experience with UCaaS and CCaaS platforms (e.g., Zoom, Five9, FreeSWITCH) * Experience with Zoom Phone and Zone Contact Center is a plus. * Strong troubleshooting and problem-solving skills
Herndon, VA ยท On-site
$104K - $166K/yr
Building and configuring software-based phone systems such as Asterisk or Freeswitch Building and configuring monitoring systems like Prometheus, Nagios, or Zabbix. Building and configuring ELK ...
Herndon, VA ยท On-site
$104K - $166K/yr
Building and configuring software-based phone systems such as Asterisk or Freeswitch Building and configuring monitoring systems like Prometheus, Nagios, or Zabbix. Building and configuring ELK ...
Denver, CO ยท Hybrid
$141K - $188K/yr
Hands-on installation experience deploying open-source UC (such as Kamailio, FreeSWITCH, Asterisk, etc.) * Extensive knowledge and understanding of VoIP deployments and protocols like SIP, SDP, RTP ...
Denver, CO ยท Hybrid
$141K - $188K/yr
Hands-on installation experience deploying open-source UC (such as Kamailio, FreeSWITCH, Asterisk, etc.) * Extensive knowledge and understanding of VoIP deployments and protocols like SIP, SDP, RTP ...
$121K - $160K/yr
Angular, Node JS, AWS Chime, FreeSwitch * Infrastructure: Google Cloud, AWS, GitHub, and on-premise servers * Project management: Azure DevOps Notable Projects & Accomplishments * Telemedicine ...
Quick apply
$121K - $160K/yr
Angular, Node JS, AWS Chime, FreeSwitch * Infrastructure: Google Cloud, AWS, GitHub, and on-premise servers * Project management: Azure DevOps Notable Projects & Accomplishments * Telemedicine ...
You will design and develop contact center components using open-source communication frameworks such as Asterisk, FreeSWITCH, Kamailio, WebRTC, SIP, RTP, Matrix, and Rocket.Chat, as well as engineer ...
You will design and develop contact center components using open-source communication frameworks such as Asterisk, FreeSWITCH, Kamailio, WebRTC, SIP, RTP, Matrix, and Rocket.Chat, as well as engineer ...
Durham, NC ยท On-site
$130K - $174K/yr
You will design and develop contact center components using open-source communication frameworks such as Asterisk, FreeSWITCH, Kamailio, WebRTC, SIP, RTP, Matrix, and Rocket.Chat, as well as engineer ...
Durham, NC ยท On-site
$130K - $174K/yr
You will design and develop contact center components using open-source communication frameworks such as Asterisk, FreeSWITCH, Kamailio, WebRTC, SIP, RTP, Matrix, and Rocket.Chat, as well as engineer ...
Experience with Asterisk, FreeSWITCH, or similar communications platforms. * Experience with Elixir and Phoenix. * Experience with AWS, Azure, or Google Cloud. * Experience with Kubernetes, Docker ...
Quick apply
Experience with Asterisk, FreeSWITCH, or similar communications platforms. * Experience with Elixir and Phoenix. * Experience with AWS, Azure, or Google Cloud. * Experience with Kubernetes, Docker ...
$28K - $56.8K
1% of jobs
$56.8K - $85.6K
4% of jobs
$85.6K - $114.5K
11% of jobs
$123K is the 25th percentile. Wages below this are outliers.
$114.5K - $143.3K
28% of jobs
The median wage is $155.3K / yr.
$143.3K - $172.1K
13% of jobs
$196.6K is the 75th percentile. Wages above this are outliers.
$172.1K - $200.9K
21% of jobs
$200.9K - $229.7K
16% of jobs
$229.7K - $258.5K
3% of jobs
$258.5K - $287.4K
0% of jobs
$287.4K - $316.2K
1% of jobs
$316.2K - $345K
2% of jobs
$28K
$171.7K
$345K
A FreeSWITCH job typically involves working with the open-source telephony platform FreeSWITCH to develop, configure, and maintain VoIP systems. Responsibilities may include building custom call flows, integrating with PBX systems, and optimizing performance for scalable communication solutions. Engineers or developers in this role often work with SIP protocols, scripting languages like Lua or JavaScript, and database management. Experience with networking, APIs, and telecom infrastructure is commonly required.
A typical day for a FreeSWITCH Engineer involves configuring and maintaining FreeSWITCH servers, troubleshooting VoIP call flows, monitoring system performance, and implementing new features or integrations as needed. You may collaborate with software development teams to create custom modules, provide technical support to users or clients, and ensure high availability of telephony services. Documenting processes and staying updated on the latest FreeSWITCH releases or telecommunications standards are also common tasks. Expect a mix of hands-on technical work, problem-solving, and teamwork in this versatile role.
To thrive as a FreeSWITCH Engineer, you need deep expertise in VoIP technologies, SIP protocols, and real-time communications systems, often backed by a degree in Computer Science or a related field. Experience working directly with FreeSWITCH, related telephony software, and familiarity with Linux server administration are commonly required, as well as knowledge of scripting languages like Lua or Python. Strong problem-solving abilities, attention to detail, and effective communication skills help facilitate smooth project execution and teamwork. These competencies are critical for designing, deploying, and maintaining robust voice solutions in complex telecommunication environments.

Full-time
Posted 20 days ago