About the role

Development Engineer for simulation and design of III/V laser diodes at Lumics GmbH. Focused on high-tech solutions in the industrial field.

Responsibilities

Simulation and design of epitaxial structures (heterostructures) for III/V semiconductor laser diodes in the mid-infrared (MIR) range (GaAs-, InP- or GaSb-based systems)
Development and optimization of quantum wells, barriers, waveguides and doping profiles with a particular focus on brightness, efficiency and reliability
Use and further development of simulation and design software (e.g., HAROLD, LUMERICAL, APSYS, MATLAB or comparable tools), including development of custom models where applicable
Conceptualization, simulation and further development of chip and heterostructure designs for III/V semiconductor laser diodes based on physical models (band structure, carrier dynamics, recombination mechanisms, thermal management)
Analysis of the physical relationships between the epitaxial structure and the optoelectronic properties of the devices
Validation of simulation results through close collaboration with process development and manufacturing
Independent planning, execution and development of experiments for analysis (LIV measurements — CW/pulsed, near- and far-field measurements, etc.), and use of characterization methods such as PL, XRD, TEM, SIMS or TLM
Collaboration with process development and manufacturing to transfer new chip and epitaxy concepts into series production
Opportunity to help shape and publish scientific results in both internal and external professional forums

University degree (Diploma, Master's or PhD) in Physics, Electrical Engineering, Materials Science or a related field with a focus on semiconductor devices
Solid knowledge in the simulation and development of heterostructures for III/V semiconductors (band structures, transport mechanisms, quantum wells/wires, non-radiative mechanisms)
Proven experience in designing III/V laser diodes, ideally in the wavelength regions relevant to us
Confident handling of device simulation tools or willingness to develop custom physical models/tools
Basic understanding of epitaxial processes and their influence on device design is helpful but not a primary part of the role
Enjoy analytical work, problem solving and interdisciplinary collaboration
Very good German and English skills, both written and spoken.

30 days of vacation per year to support a healthy work–life balance
A varied and challenging role with many opportunities to shape your work at a modern location
Flat hierarchies and short decision-making processes with plenty of scope for personal responsibility
Flexible working hours
Regular cross-team knowledge transfer
Numerous additional benefits such as employee and retail discounts, on-site cafeteria, sports facilities (e.g., volleyball court, private fitness room), bike leasing and regular company events