Principal Firmware Engineer
Coherent
Listing collected from Coherent's career site. NextChapter is independent of Coherent.
Horsham, PA · Posted July 8, 2026
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November 2026
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- #17Best cities for AI-skill jobs in the Northeast11% · of 70
- #21Best cities for director and executive jobs in the Mid-Atlantic27% · of 85
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- Best cities for engineering pay after cost of living #1 San Mateo ($216k)
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- Employers with the most engineering jobs #1 Amazon (2,992 roles)
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About the job
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 You’ll Do
Firmware Development – 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 – 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:
🤝 Integrity – Create an environment of trust.
✨ Collaboration – Innovate through the sharing of ideas.
🎯 Accountability – Own the process and the outcome.
🌍 Respect – Recognise the value in everyone.
🚀 Enthusiasm – 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.