C++ Software Developer

• Design, develop and maintain VoIP solutions using C++ as the main language.
• Implement and optimise VoIP protocols such as SIP (Session Initiation Protocol), RTP (Real-time Transport Protocol), and RTCP (Real-time Transport Control Protocol) for voice and video communications.
• Collaborate with network teams to ensure efficient integration with VoIP servers and devices.
• Perform debugging and troubleshooting in VoIP environments, ensuring high availability and quality of service.
• Implement cybersecurity measures in VoIP communications.

We are looking for a VoIP Systems Developer with strong C++ skills and experience in VoIP technologies. You will be part of a multidisciplinary team in charge of developing and optimising telecommunication solutions based on IP communication protocols for railway systems. If you have experience in the design, implementation and optimisation of VoIP systems and a strong command of C++, this is your opportunity!, For this position, we are looking for graduates in Computer Engineering or similar with experience in:

• VoIP technologies:

• SIP (Session Initiation Protocol): proficient in theory and practice. Ability to implement SIP clients and servers and interact with other SIP-based platforms.
• RTP and RTCP: experience with real-time voice/video transmission; ability to manage media synchronization, latency and QoS.
• SDP (Session Description Protocol): knowledge to describe multimedia sessions and negotiate codec/media parameters.
• PJSIP or OpenSIPS: experience with these libraries/frameworks for VoIP development; ability to manage multiple SIP channels.
• Asterisk or FreeSWITCH: experience configuring and customizing VoIP servers for call management and conferencing.

• C++ and familiarity with multimedia processing libraries (e.g. GStreamer, FFmpeg).

• Hybrid working model and 8 weeks per year of teleworking outside your usual geographical area.
• Flexible start and finish times, and intensive working hours Fridays and in summer.
• Personalized career plan, development, training and language learning support.
• National and international mobility with relocation package if needed.
• Competitive compensation with ongoing reviews, flexible compensation and discount on brands.
• Wellbeing program: Health, dental and accident insurance; free fruit and coffee; and training in physical, mental and financial health.