Photonics Engineer: Epitaxial Structures & Devices

Aegiq Ltd.; Sheffield; On-site; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Competitive salary

Annual leave 25 days

Sheffield-based workplace

Excellent transport links

Growth opportunities

Collaborative environment

Job summary

Aegiq, a Sheffield-based quantum technology company, is seeking a Photonics Engineer to join the team developing next-generation quantum photonic devices. You will design and optimise III-V heterostructures, focusing on InP and GaAs systems, and translate epitaxial designs into manufacturable specifications through close collaboration with partners.

You will model band structures, strain, and thermal effects, and use TCAD and Python tools to drive design from simulation to wafer-scale

Qualifications

• Degree in Physics, Materials Science, Electrical Engineering or related semiconductor discipline; advanced postgraduate study or equivalent experience.
• Strong understanding of III-V semiconductor physics, including band structures and optical transitions.
• Experience designing or developing InP and/or GaAs-based structures (ternary/quaternary alloys).
• Understanding of heterostructure design, quantum wells, strain engineering and device performance.
• Practical experience with TCAD or numerical device simulation and using results to guide design.
• Knowledge of MOCVD/MOVPE or MBE growth and how epitaxial design influences manufacturability.
• Ability to analyze device behaviour, assess modelling assumptions and identify risks.
• Clear communication and collaboration across physics, design, fabrication and testing teams.

Responsibilities

• Design and optimise complex III-V heterostructures, including quantum dots and wells, for optical/electronic performance.
• Model electronic band structures, confinement and transport; evaluate emission wavelength and quantum effects.
• Engineer band structures and optical properties for advanced photonic devices.
• Analyse lattice mismatch and strain to minimise defects in metamorphic structures.
• Investigate heat transport and temperature effects on device performance.
• Develop modelling workflows using TCAD and Python-based analysis.
• Translate epitaxial designs into material specs and growth requirements with partners.
• Interpret HR-XRD, PL, SIMS, TEM data to refine designs and validate models.
• Collaborate across quantum physics, photonics design, and fabrication teams to deliver hardware.

Skills

Semiconductor physics

III-V materials

Epitaxial design

Modelling & simulation

Scientific programming

Epitaxial manufacturing

Engineering approach

Communication & collaboration

Education

Physics

Materials Science

Electrical Engineering

Tools

TCAD

nextnano

Crosslight

Silvaco

Sentaurus

Python

Job description

Aegiq, a Sheffield-based quantum technology company, is seeking a Photonics Engineer to join the team developing next-generation quantum photonic devices. You will design and optimise III-V heterostructures, focusing on InP and GaAs systems, and translate epitaxial designs into manufacturable specifications through close collaboration with partners.

You will model band structures, strain, and thermal effects, and use TCAD and Python tools to drive design from simulation to wafer-scale