Principal Firmware Engineer

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๐Ÿ“ Horsham, PA, United StatesFull time

About this role

Join Coherent to develop firmware for advanced optical amplifier modules, optical transport subsystems and micro-optics products.

You will develop new products while supporting existing platforms, working closely with customers and cross-functional engineering teams to define requirements and deliver effective technical solutions.

What Youโ€™ll Do

Firmware Development โ€“ 80%

  • Design and develop embedded firmware, control algorithms and reusable features across multiple optical products.
  • Create firmware test processes and perform functional, unit and robustness testing.
  • Improve code reusability, execution efficiency and product performance.
  • Maintain accurate and up-to-date firmware documentation.
  • Collaborate with optical, hardware and test engineers to improve firmware and development processes.
  • Clarify customer requirements and recommend appropriate technical solutions.


Technical Leadership and Support โ€“ 20%

  • Mentor junior firmware engineers and provide technical guidance.
  • Lead code reviews and promote consistent coding standards.
  • Support customers, New Product Introduction and manufacturing teams.
  • Resolve sustaining issues, fix legacy-product defects and implement new customer-requested features.


About You

  • Degree in Electrical Engineering, Computer Science or a related discipline.
  • Eight or more years of experience developing embedded and real-time control systems using microcontrollers and FPGA-based hardware.
  • Advanced embedded C++ programming and object-oriented design experience.
  • Knowledge of NIOS, ARM and GNU toolchains.
  • Practical Agile development experience, including CI/CD and DevOps practices.
  • Experience using laboratory debugging tools, including oscilloscopes and logic analysers.
  • Knowledge of digital signal processing and control theory, including filters and open- and closed-loop systems.
  • Strong analytical, structured problem-solving and communication skills.
  • Ability to work independently, manage priorities and deliver against demanding schedules.
  • Experience working within global, cross-cultural teams.


Experience in optical communications and assembly-language programming would be advantageous.

Our ICARE Values

Everything we do is guided by our ICARE values:

  • ๐Ÿค Integrity โ€“ Create an environment of trust.
  • โœจ Collaboration โ€“ Innovate through the sharing of ideas.
  • ๐ŸŽฏ Accountability โ€“ Own the process and the outcome.
  • ๐ŸŒ Respect โ€“ Recognise the value in everyone.
  • ๐Ÿš€ Enthusiasm โ€“ Find a sense of purpose in work.
Coherent is a global leader in lasers, engineered materials and networking components. We are a vertically integrated manufacturing company that develops innovative products for diversified applications in the industrial, optical communications, military, life sciences, semiconductor equipment, and consumer markets. Coherent provides a comprehensive career development platform within an environment that challenges employees to perform at their best, while rewarding excellence and hard-work through a competitive compensation program. It's an exciting opportunity to work for a company that offers stability, longevity and growth. Come Join Us!

Note to recruiters and employment agencies: We will not pay for unsolicited resumes from recruiters and employment agencies unless we have a signed agreement and have required assistance, in writing, for a specific opening.


Frequently Asked Questions

Is the salary disclosed for the Principal Firmware Engineer position at Coherent Corp. US?
The salary for this Principal Firmware Engineer role at Coherent Corp. US is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Principal Firmware Engineer position at Coherent Corp. US located?
This Principal Firmware Engineer role at Coherent Corp. US is based in Horsham, PA, United States. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Principal Firmware Engineer role at Coherent Corp. US full-time or part-time?
This is listed as a Full time position. It is posted as a Principal Firmware Engineer role at Coherent Corp. US.
How do I apply for the Principal Firmware Engineer position at Coherent Corp. US?
Click the "Apply Now" button on this page. You will be redirected to Coherent Corp. US's official application portal hosted on oraclecloud where you can submit your application directly.
When was the Principal Firmware Engineer job at Coherent Corp. US posted?
This Principal Firmware Engineer position at Coherent Corp. US was posted on Jul 8, 2026. Apply as soon as possible โ€” early applications are often reviewed first.
Principal Firmware Engineer
Coherent Corp. US
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