SIP Server Engineer

Apply
Apply

Share

successfully icon

Successfully

The vacancy has been successfully added to favorites

location icon

Belgrade, Serbia

specialization icon

Other Packaged Software

lob icon

Automotive Industry

date icon

05/09/2025

Req. VR-117142

Apply
Project description

In the rapidly evolving landscape of modern mobility and transport services, a significant challenge lies in seamlessly integrating the elements of automotive OEM infrastructure with diverse services of external partners. Luxoft will develop a Cloud platform to exchange, integrate and process data from and to the vehicle, the Mobileye SDS backend, and the MaaS System. The AWS-based solution will be designed by reviewing and improving the current concept in close cooperation with the client and further stakeholders to identify, manage and document the requirements. Our approach will be iterative, adaptive, and executed with a proactive Agile methodology. Luxoft will provide a development team with great experience in modern development practices, which are self-organized, cross-functional, and experienced to deliver in quality, time, and budget.

Responsibilities
bullet icon

Install, configure, and maintain SIP servers (e.g., Kamailio, Asterisk, FreeSWITCH) and supporting RTP proxies.

bullet icon

Develop and optimize SIP routing logic between vehicle softphones and the call-center backend.

bullet icon

Design and implement high-availability mechanisms for the SIP server (e.g., active-active failover, state replication, scaling for 11k endpoints).

bullet icon

Monitor and troubleshoot SIP signaling and RTP media flows (TCP for signaling, UDP for media).

bullet icon

Implement secure communication (TLS/SIPS for signaling, SRTP/DTLS for media) and closed user group restrictions.

bullet icon

Support interoperability with the vehicle backend, call-center PBX, and external operators.

bullet icon

Maintain logging, test call handling, and metadata traceability as per system requirements.

bullet icon

Provide operational documentation and runbooks for SIP services.

Skills

Must have

bullet icon

Strong hands-on experience with SIP server installation, configuration, and troubleshooting.

bullet icon

Deep understanding of SIP, SDP, RTP, RTCP, and related VoIP standards.

bullet icon

Proven experience designing, deploying, and operating SIP server infrastructures that handle high-load environments (10k+ endpoints or equivalent) with built-in high availability and clustering.

bullet icon

Strong knowledge of security measures for SIP/VoIP (e.g. TLS, SRTP, SBCs).

bullet icon

Proficiency with Linux system administration and scripting, including managing databases for SIP routing and authentication.

bullet icon

Familiarity with SIP monitoring tools.

Nice to have

bullet icon

Experience with telecom interconnects or carrier-grade SIP routing.

bullet icon

Exposure to AWS-based deployments.

bullet icon

Relevant VoIP/security certifications.

Other
seniority icon

Languages

English: B2 Upper Intermediate

seniority icon

Seniority

Senior

Belgrade, Serbia

Req. VR-117142

Other Packaged Software

Automotive Industry

05/09/2025

Req. VR-117142

Apply for SIP Server Engineer in Belgrade

*Indicates a required field

Under the terms of your specific consent or to perform our obligations under a contract with you, as applicable, we, Luxoft Holding Inc. will manually and electronically process your personal data, specifically your first name, last name, phone number, e-mail address and other data you provide us through this form.


Within this context, we process personal data only for the specific purpose(s) indicated in the individual consent language or other notices provided below.


We will – insofar as reasonably necessary for the purpose you have agreed to and within the scope of applicable laws – transfer your personal data to other entities within the Luxoft Group and to the group of third party recipients listed in our Privacy Notice. Such Recipients can be located outside the European Union (EU) and/or the European Economic Area (EEA) (“Third Countries”). The Third Countries concerned, e.g. the USA, may not have the level of data protection that you enjoy e.g. under the GDPR. This can result in disadvantages such as an impeded enforcement of data subjects’ rights, a lack of control over further processing and access by state authorities. You may only have limited legal remedies against this. Insofar our transfer of your personal data to recipients in Third Countries is not covered by an adequacy decision of the EU Commission, we achieve an adequate level of data protection as further detailed out in our Privacy Notice.


With your consent, we personalise marketing communications to you by way of carrying out marketing research analysis, analysing the surfing-behaviour of our website visitors and to adjust it to their detected tendencies, as well as to plan more efficient future marketing activities. This personalised marketing does not include any automated decision-making activities.


Further information on how we process personal data in general is available in our Privacy Notice. You may withdraw any given consent at any time. The withdrawal of your consent(s) will not affect the lawfulness of processing before its withdrawal. For any request in this context, please e-mail us at: DPO@luxoft.com.


Before uploading CV or any other information to this website, to learn more about your obligations and restrictions arising from the use of this website, please read our Terms of Use.