TTCN-3 framework developer

ALTEN Romania is part of the ALTEN Group , Leader in IT and Engineering Consulting . We develop innovative and durable technical solutions that fulfill the needs of our local and international partners.

Responsabilities:

• Design and develop automated TTCN-3 tests to validate ED-137C compliance
• Emulate Controller Working Position, Voice Communication System or Ground Radio Station terminals, with the system under test treated as a black box
• Dynamically configure multiple SIP + RTP streams simulating pilot–controller communication across various voice use cases
• Implement test report generation and validation methods
• Develop system adaptors and test ports (TTCN-3 Runtime Interface)
• Automate tests and integrate them into CI/CD pipelines

Requirements:

• Solid experience with TTCN-3 (language concepts, mechanisms, dynamic configuration)
• Programming skills in C/C++ and Python
• Knowledge of SIP and SDP , including aviation-specific extensions (PTT/Squelch, SELCALL, radio receiver multicast)
• Understanding of voice communication: codecs, RTP streams, audio payload control
• Experience with ASN.1
• Experience with CI/CD

Nice to have:

• Knowledge of the ED-137 / ED-137C standard
• Background in telecom, VoIP or aviation
• Experience with Eclipse Titan or TTworkbench
• Experience with protocol testing frameworks

What we offer:

• A new project with a team being built from the ground up
• Flexible hybrid working model
• Opportunity to shape the technical approach, including the choice of framework