{"schemaVersion":"jobsearcher.job.v1","id":"d054fd043cb4828ed4568c8d","url":"https://jobsearcher.com/jobs/d054fd043cb4828ed4568c8d","canonicalUrl":"https://jobsearcher.com/jobs/d054fd043cb4828ed4568c8d","title":"VoIP Software Engineer (Asterisk)","description":"IDT Corporation is looking for a Middle VoIP Engineer with a focus on Asterisk.\r\nThe team is building a cloud PBX solution based on Kamailio and Asterisk (net2phone). We expect you to have strong problem-solving skills, be self-motivated, proactive, and responsible.\r\nYour daily duties will include implementing PBX features using Asterisk with respect to high availability and scalability.\r\nYou are not limited to Asterisk; we welcome you to be involved in all parts of a large ecosystem built around Asterisk, Kamailio, RTPEngine, Java, Kafka, MySQL, MongoDB, CDK, and GitHub Actions pipelines.\r\nYou will work with automated CI/CD processes and get a chance to improve your knowledge of SIP, cloud infrastructure, and networks.\r\nWe are looking for a person with\r\nAt least 5 years of experience in Asterisk: you know what are UAC, UAS, PJSIP, channel, call park, blind/attendant transfer, etc.\r\nExperience with Asterisk dialplan in Lua.\r\nSolid SIP knowledge.\r\n3+ years experience in coding.\r\nExperience in Linux environment.\r\nGood level of English (B2 or higher).\r\nResponsibilities\r\nHigh-Scale Asterisk: Build and maintain cloud PBX features within a large-scale ecosystem (60k+ users) using Asterisk, Kamailio, and RTPEngine.\r\nAdvanced Dialplan Development: Design and implement complex telephony logic specifically using Asterisk dialplans in Lua.\r\nDeep Troubleshooting & Bug Fixing: Analyze stack traces and performance bottlenecks to fix bugs in Asterisk source code and contribute to the community.\r\nProtocol & SIP Proxy Management: Manage complex SIP/RTP flows, SDP negotiation, and NAT traversal for resilient and scalable telephony clusters.\r\nSystem Maintenance & Reliability: Optimize Linux environments, manage PSTN routing/failover, and participate in on-duty rotations to resolve outages.\r\nWhat We Offer\r\nRemote b2b or hybrid / remote (Belarus-Moldova) work opportunity!\r\nStable job with long-term growth perspective.\r\nCompetitive salary with annual performance review.\r\nReally good hardware.\r\nAn exciting and challenging job with talented people around.\r\nContinuous learning and career growth opportunities.\r\nCompensation for professional training, seminars, and conferences.\r\nReferral program – get rewarded for helping us grow the team with talented people.\r\nCompany-supported English classes to enhance your professional growth.\r\nMore perks for the Minsk and Chisinau office employees.\r\nIDT Corporation is a global communications company founded in 1990 and headquartered in Newark, New Jersey. We are industry leaders in prepaid communication and payment services and one of the largest international voice carriers. We are listed on the NYSE, employ over 1800 people across 20 countries, and have over $1.5 billion in revenues.\r\nWe are not \"another big IT corporation\" – we encourage and support in-house entrepreneurs in developing their ideas into business actions.\r\nNet2Phone is a rapidly growing global provider of unified cloud communications solutions. It solves the problem of cost optimization for businesses in more than 50 countries, providing them with high-quality VoIP services. Net2Phone provides businesses with an integrated communications suite featuring powerful collaboration tools such as voice, messaging, chat, and unlimited domestic and international calling to 23+ countries.\r\nThe product was named 'VoIP Supplier of the Year' by the Telecom Consulting Group in 2018.\r\nJ-18808-Ljbffr","company":"Medium","rawCompany":"medium","city":"Madrid","state":"IA","isRemote":false,"isActive":false,"createdAt":"2026-06-26T01:40:11.841Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1241.01","title":"Telecommunications Engineering Specialists","slug":"telecommunications-engineering-specialists"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"VoIP Software Engineer (Asterisk)","description":"IDT Corporation is looking for a Middle VoIP Engineer with a focus on Asterisk.\r\nThe team is building a cloud PBX solution based on Kamailio and Asterisk (net2phone). We expect you to have strong problem-solving skills, be self-motivated, proactive, and responsible.\r\nYour daily duties will include implementing PBX features using Asterisk with respect to high availability and scalability.\r\nYou are not limited to Asterisk; we welcome you to be involved in all parts of a large ecosystem built around Asterisk, Kamailio, RTPEngine, Java, Kafka, MySQL, MongoDB, CDK, and GitHub Actions pipelines.\r\nYou will work with automated CI/CD processes and get a chance to improve your knowledge of SIP, cloud infrastructure, and networks.\r\nWe are looking for a person with\r\nAt least 5 years of experience in Asterisk: you know what are UAC, UAS, PJSIP, channel, call park, blind/attendant transfer, etc.\r\nExperience with Asterisk dialplan in Lua.\r\nSolid SIP knowledge.\r\n3+ years experience in coding.\r\nExperience in Linux environment.\r\nGood level of English (B2 or higher).\r\nResponsibilities\r\nHigh-Scale Asterisk: Build and maintain cloud PBX features within a large-scale ecosystem (60k+ users) using Asterisk, Kamailio, and RTPEngine.\r\nAdvanced Dialplan Development: Design and implement complex telephony logic specifically using Asterisk dialplans in Lua.\r\nDeep Troubleshooting & Bug Fixing: Analyze stack traces and performance bottlenecks to fix bugs in Asterisk source code and contribute to the community.\r\nProtocol & SIP Proxy Management: Manage complex SIP/RTP flows, SDP negotiation, and NAT traversal for resilient and scalable telephony clusters.\r\nSystem Maintenance & Reliability: Optimize Linux environments, manage PSTN routing/failover, and participate in on-duty rotations to resolve outages.\r\nWhat We Offer\r\nRemote b2b or hybrid / remote (Belarus-Moldova) work opportunity!\r\nStable job with long-term growth perspective.\r\nCompetitive salary with annual performance review.\r\nReally good hardware.\r\nAn exciting and challenging job with talented people around.\r\nContinuous learning and career growth opportunities.\r\nCompensation for professional training, seminars, and conferences.\r\nReferral program – get rewarded for helping us grow the team with talented people.\r\nCompany-supported English classes to enhance your professional growth.\r\nMore perks for the Minsk and Chisinau office employees.\r\nIDT Corporation is a global communications company founded in 1990 and headquartered in Newark, New Jersey. We are industry leaders in prepaid communication and payment services and one of the largest international voice carriers. We are listed on the NYSE, employ over 1800 people across 20 countries, and have over $1.5 billion in revenues.\r\nWe are not \"another big IT corporation\" – we encourage and support in-house entrepreneurs in developing their ideas into business actions.\r\nNet2Phone is a rapidly growing global provider of unified cloud communications solutions. It solves the problem of cost optimization for businesses in more than 50 countries, providing them with high-quality VoIP services. Net2Phone provides businesses with an integrated communications suite featuring powerful collaboration tools such as voice, messaging, chat, and unlimited domestic and international calling to 23+ countries.\r\nThe product was named 'VoIP Supplier of the Year' by the Telecom Consulting Group in 2018.\r\nJ-18808-Ljbffr","datePosted":"2026-06-26T01:40:11.841Z","dateModified":"2026-06-26T01:40:11.841Z","hiringOrganization":{"@type":"Organization","name":"Medium","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Madrid","addressRegion":"IA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"d054fd043cb4828ed4568c8d"},"url":"https://jobsearcher.com/jobs/d054fd043cb4828ed4568c8d"}}