Senior Voip Developer - Kamailio (Europe)

Warsaw / Barcelona / Berlin / Minsk / London, UK
N2P – Technology N2P /
Voice Engineering /
We´re looking for a Senior Kamailio Developer to help us build and scale a cloud PBX solution based on Kamailio and Asterisk. 

You´ll be great for the role if you are an experienced Kamailio developer with easy to find contributions in  

The team is building a cloud PBX solution based on Kamailio and Asterisk. We expect you to have strong problem-solving skills, be self-motivated, initiative, responsible. Your daily duties will include implementing different sip proxy features using Kamailio SIP Server with respect to the high availability and scalability.

You are not limited to Kamailio. We welcome you to be involved in all parts of a large ecosystem built around Kamailio based on Asterisk, Java, Kafka, MySQL, Mongo, Terraform, Jenkins pipelines.

You will work with automated CI/CD processes and get a chance to improve your knowledge in SIP, cloud infrastructure, networks.

Join us if you

    • Have at least 5 years production experience with large-scale deployment (call servers with 60k+ active users).
    • Have solid Kamailio experience.
    • Have worked with Asterisk & RTPEngine
    • Have contributions in
    • Experience with CI/CD, AWS, Linux & Networking.
    • Good level of English (B2 or higher).


    • Development and maintenance of calling platform.
    • Ensuring platform SLA and HA.
    • Patching Kamailio and Asterisk if needed.
    • Production environment support.

We offer you:

    • Sponsoring your contributions to the open-source Kamailio project as long as our platform comes first.
    • An exciting and challenging job with talented people around.
    • Competitive salary and growth opportunities.
    • Remote work opportunity!
    • B2B Employment ($, gross).

About us:

IDT is – an American telecommunications company founded in 1990 and headquartered in Newark, New Jersey. Today it is an industry leader in prepaid communication and payment services and one of the world's largest international voice carriers. We are listed on the NYSE, employ over 1300 people across 20+ countries, and have revenues in excess of $1.5 billion. 

Net2Phone is a rapidly growing global provider of unified cloud communications solutions. It was named ‘VoIP Supplier of the Year’ by the Telecom Consulting Group in 2018. Its cloud communication solution provides an integrated communications suite featuring powerful collaboration tools such as voice, messaging, chat, unlimited domestic and international calling to 23+ countries. Net2Phone’s commitment to TCG includes rapid quote turn-around, industry-leading SPIFFs, and evergreen residuals.