Development, operation and debugging of the SIP/VoIP platform
Analysis and optimization of complex call flows to ensure quality and scalability
Monitoring and maintenance of telecom core systems (SBCs, trunks, telephony platforms)
Troubleshooting performance, quality, and stability issues
Support for incident management, escalations, and root-cause analyses

Requirements

Solid hands-on knowledge of SIP, RTP, and VoIP architectures
Experience with trunking (SIP trunks), Session Border Controllers (SBCs), and telecommunications/telephony platforms
Strong analytical skills and troubleshooting ability for complex systems
Resilience and reliability in critical incident situations
German language skills at C1 level or higher, plus fluent English
At least 1 year of relevant experience with VoIP/SIP

Benefits

Hybrid working model (approx. 50% remote)
30 days of vacation and flexible working hours
Training budget for courses, conferences, and trainings
Team events and a collaborative, low-bureaucracy company culture
Additional perks such as company bike leasing, occupational pension scheme, and shopping vouchers

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

SIPRTPVoIPtrunkingSession Border Controllerstelecommunications platformstelephony platformsincident managementroot-cause analysisperformance troubleshooting

Soft Skills

analytical skillstroubleshooting abilityresiliencereliability