SIP Server Engineer

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Gdansk, Poland

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Other Packaged Software

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Automotive Industry

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05/09/2025

Req. VR-117142

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

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

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

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

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

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

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

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Provide operational documentation and runbooks for SIP services.

Skills

Must have

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

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

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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.

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

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

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Familiarity with SIP monitoring tools.

Nice to have

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Experience with telecom interconnects or carrier-grade SIP routing.

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Exposure to AWS-based deployments.

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Relevant VoIP/security certifications.

Other
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Languages

English: B2 Upper Intermediate

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Seniority

Senior

Luxoft Benefits*
  • Relocation options **
  • Experience in an international environment
  • Cross-cultural experience
  • Feedback culture
  • Regular appraisals
  • Annual holiday - 20 or 26 days. The duration of the leave depends on the overall seniority
  • Occasional leave - 1 or 2 days/ depending on the circumstances
  • Child care leave - 2 days or 16 hours per year
  • Absence due to force majeure - 2 days or 16 hours per year
  • Maternity Leave - 20 weeks
  • Parental Leave - 41 weeks
  • Paternity Leave - 14 days
  • Expert-led tech courses covering basic to advanced topics
  • Internal instructor-led soft skills courses
  • Comprehensive in-house self-learning resources for both soft and hard skills
  • Access to external self-learning libraries like ProQuest eBook and Udemy for Business
  • Cloud Programs: MS Cloud Academy, AWS Partner Academy, Google Cloud Academy
  • Custom Learning Programs: upskilling, reskilling, technical mentorship
  • Leadership Programs for Managers
  • Multisport card
  • Possibility to order Multisport card at the corporate rate for family members
  • LuxGood Program: wellbeing seminars, contests, relaxation sessions, yoga sessions, etc.
  • One Team Program: Buddy for each New Joiner; seminars, meeting and workplace space to support integration with local community and culture; “Hire me” workshops for partners
  • Preferential banking offer
  • Preferential car leasing offer
  • Cafeteria program discounts for shops, cinema tickets, holiday offers
  • Luxoft Social Benefit Fund: sport and recreation benefits, the possibility to receive financial support
  • Private Healthcare Insurance with unlimited access to specialists
  • Full dental support
  • Travel Insurance
  • Possibility to add private healthcare coverage for family members at the corporate rate
  • Life insurance at the corporate rate for employees and family members, including payment of the basic package for the employee by the employer
  • Reimbursement for corrective glasses
  • Many fun social activities organized by the Luxoft team offline in your city
  • Online entertainment events for whole company and local team events
  • A workplace where you’re treated with respect within a multicultural team
  • Rotation between projects and accounts
  • New career opportunities

Self-Learning Library

CSR Projects

*The acquisition of rights to the above benefits depends on the form of cooperation. Benefits apply to those employed under a contract of employment.

**Please note that relocation is not available for all open positions. At Luxoft Poland it is possible to work remotely only from the territory of Poland.

***Options offered by the Polish government.

Gdansk, Poland

Req. VR-117142

Other Packaged Software

Automotive Industry

05/09/2025

Req. VR-117142

Apply for SIP Server Engineer in Gdansk

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