Photonics Circuit Designer (f/m/d)

We are seeking a skilled Photonics Circuit Designer at Black Semiconductor to own the schematic, layout, and physical implementation of our photonic integrated circuits. You will translate photonic device concepts and architecture requirements into PDK-compliant, tape-out-ready PIC blocks and full chip assemblies.

Working closely with the Photonics Architect, device and simulation teams, EIC designers, and packaging engineers, you will drive circuit-level implementation from validated concepts through layout, verification, and foundry submission. Your work will ensure alignment between circuit design, simulation models, manufacturing requirements, and physical implementation.

This role bridges photonic circuit design, IC implementation, and semiconductor manufacturing.

To join our team, you should be excited to

• Own PIC schematic capture and physical layout implementation, including photonic components, links, and full chip assemblies using industry-standard photonic IC design flows.
• Define PIC floor plans, waveguide routing, and PIC/EIC interconnect structures, balancing optical performance, electrical integration, and packaging constraints.
• Develop and maintain PDK-based design workflows, including pcells, compact/behavioral models, and design rules to ensure consistency between layouts, netlists, and simulation models.
• Drive verification and tape-out readiness, including DRC/LVS execution, extraction debugging, verification closure, and coordination with foundry partners.
• Automate and improve design workflows through scripting, regression testing, layout checks, and data analysis.
• Document implementation decisions and communicate design trade-offs across architecture, simulation, EIC, packaging, and product teams.

Your Qualifications

• Bachelor's or Master's degree in Electrical Engineering, Photonics, Physics, or a related technical field, with strong fundamentals in optics, electromagnetics, and semiconductor device physics.
• 5+ years of experience in PIC schematic capture and mask layout, including code-based or GUI-based design using Cadence Virtuoso, Synopsys photonic design flows, or equivalent tools.
• Experience implementing photonic IC designs using foundry PDKs, including layout constraints, process rules, and manufacturability considerations.
• Strong DRC/LVS experience, including verification debugging and closure.
• Practical understanding of photonic device behavior, including waveguides, coupling, loss budgets, and layout trade-offs.
• Experience taking photonic designs through tape-out and foundry submission.
• Strong Python scripting skills for layout automation, regression flows, verification workflows, and data analysis.
• Ability to collaborate across photonics, EIC, packaging, simulation, and product teams to resolve design trade-offs.
• Experience with PIC design and verification workflows, including Cadence Virtuoso or Synopsys photonic flows, Ansys Lumerical (FDTD, MODE, CHARGE/HEAT, INTERCONNECT), foundry PDKs, DRC/LVS toolchains, Python-based automation (NumPy, SciPy, pandas), Git, and standard IC design workflows.
• Experience with PIC/EIC co-design, 2.5D/3D packaging floor planning, or advanced package integration will be considered a plus.
• Experience with Verilog-A or compact model development for photonic devices will be considered a plus.
• Experience in semiconductor product development, including reliability, qualification, and production requirements will be considered a plus.

Our work culture

People Over Processes. At Black Semiconductor, flexibility is key—we ensure work adapts to life, not the other way around. We champion work-life harmony, where careers are meaningful and enriching. Our processes are human-centric, allowing you to focus on what matters

Let’s grow together. Your potential is our priority. We provide the autonomy to make a lasting impact and nurture your growth through a culture of continuous learning. We invest in your journey for professional and personal development

Your Health and Future Matter. Your well-being is paramount. We offer a comprehensive benefits package with outstanding insurance, pension and virtual stock options for your mental, physical, and financial health. Your peace of mind is our priority - in the present and future

We Live Openness. Collaboration and inclusivity are the cornerstones of our culture. We practice openness, fostering trust and respect. Individuality is our collective strength, fueling innovation and driving us forward

We connect chips – and people. We encourage qualified individuals from any background to apply. We foster an inclusive and supportive work environment that values collaboration, innovation, and growth. Join our team and be part of an organization dedicated to making a difference in the industry

If your application results in an employment relationship, your Applicant Data will be transferred to our personnel records and processed in accordance with applicable legal requirements; otherwise, your Applicant Data will be retained for up to six (6) months after completion of the recruitment process. Read more about our privacy policy here. https://www.blacksemi.com/privacy-policy

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Source: Statistisches Bundesamt (Destatis), table; dl-de/by-2-0; StarIn's calculation

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