> Markdown version of [/jobs/ext/4618304-silicon-photonics-engineer](https://www.wearedevelopers.com/jobs/ext/4618304-silicon-photonics-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Silicon Photonics Engineer

- **Company:** 5V Tech
- **Location:** San Francisco, CA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Data Analysis, Data Centers, Python (Programming Language), MATLAB, Test Data, PIC Microcontroller, Hardware Acceleration
- **Published:** November 7, 2026
- **Apply:** https://www.juju.com/job/28_25303_f5ba9efd95248131f3e85823072c7113

## About the Role

* 5+ years working in silicon photonics or integrated photonics in industry
 * Hands-on experience designing PIC components such as ring or Mach-Zehnder modulators, germanium photodetectors, and grating or edge couplers
 * Proficiency with photonic simulation tools such as Lumerical, FDTD or eigenmode solvers
 * Experience taking designs through tape-out with a silicon photonics foundry
 * Lab experience with optical test equipment and high-speed characterisation
 * Understanding of high-speed optical links, PAM4 signalling and link budgets
 * Strong data analysis skills using Python or MATLAB
 * MS or PhD in Electrical Engineering, Physics, Optics or a related field, * Experience with co-packaged optics or optical I/O
 * Experience with 200G per lane or higher data rates
 * Knowledge of laser integration or III-V heterogeneous integration
 * Exposure to thin-film lithium niobate or silicon nitride platforms

## Description

This is a hands-on engineering role based in the San Francisco Bay Area for a photonics specialist who wants their work shipping in production AI hardware, not sitting in a research paper. You'll design, simulate, characterise and bring up silicon photonic devices and circuits for co-packaged optical engines used in high-bandwidth data centre networking. Working alongside packaging, electrical, laser and systems teams, you'll help turn photonic designs into high-volume products that directly shape how the world's largest AI systems are built., * Design and simulate silicon photonic components including modulators, photodetectors, waveguides and couplers

 * Develop photonic integrated circuits for co-packaged optics and high-speed optical interconnect
 * Run optical and electro-optical characterisation of devices and PICs at wafer and die level
 * Work with foundry partners on PDKs, process variation and tape-out readiness
 * Partner with packaging teams on fiber attach, laser integration and optical coupling
 * Collaborate with electrical, SerDes and systems teams on link budgets and performance targets
 * Analyse test data to drive design iterations, yield improvements and production readiness
 * Contribute to architecture decisions for next-generation optical engines