Device Reliability Testing Engineer (Graphene Photonics)

Location: Hybrid in Aachen, Germany

Company

hirify.global develops graphene photonic solutions that connect chips through high-throughput, low-delay computing networks while improving computing power and energy efficiency.

What you will do

• Design and execute wafer-level device reliability test plans for graphene-based photonic devices, including DC bias, RF endurance, thermal cycling, and long-term stability tests.
• Identify and investigate physical mechanisms behind graphene-related failure modes.
• Characterize and monitor extinction ratio, insertion loss, bandwidth retention, energy efficiency, dark current stability, and responsivity degradation over device lifetime.
• Lead structured root-cause investigations using FMEA and 8D methodologies, feeding findings back to Design and Process teams.
• Collaborate with Product Quality and other teams to achieve compliance with JEDEC, OIF, IEC, and IEEE standards and produce qualification and reliability documentation.
• Support the transition of graphene photonics from prototype to production-qualified products for high-volume deployment.

Requirements

• Master’s or Ph.D. degree in Electrical Engineering, Physics, Materials Science, or Photonics Engineering.
• Hands-on experience in semiconductor device physics, optoelectronics, or reliability engineering.
• Hands-on experience in photonic device characterization and reliability testing.
• Experience with high-speed RF testing above 40 GHz and VNA-based S-parameter measurements.
• Experience with advanced test equipment, including VNAs, real-time and sampling oscilloscopes rated at 50+ GHz, lightwave component analyzers, optical spectrum analyzers, and probe stations.

Culture & Benefits

• Flexible, human-centric work culture focused on work-life harmony.
• Autonomy and continuous learning opportunities supporting professional and personal development.
• Benefits package including insurance, pension, and virtual stock options.
• Open, inclusive, and collaborative work environment that values individuality, innovation, and growth.