Senior Integrated Photonics Engineer - Active Devices and Circuits

PsiQuantum'smission is to build the first useful quantum computers-machines capable of delivering the breakthroughs the field has long promised. Since our founding in 2016, our singular focus has been to build and deploy million-qubit, fault-tolerant quantum systems.

Quantum computers harness the laws of quantum mechanics to solve problems that even the most advanced supercomputers or AI systems will never reach. Their impact will span energy, pharmaceuticals, finance, agriculture, transportation, materials, and other foundational industries.

Our architecture and approachisbased on silicon photonics. Byleveragingthe advanced semiconductor manufacturing industry-including partners like GlobalFoundries-we use the same high-volume processes that already produce billions of chips for telecom and consumer electronics. Photonics offers natural advantages for scale: photonsdon'tfeel heat, are immune to electromagnetic interference, and integrate with existing cryogenic cooling and standard fiber-optic infrastructure.

In 2024,PsiQuantumannounced government-funded projects to support the build-out of our first utility-scale quantum computers in Brisbane, Australia, and Chicago, Illinois. These initiatives reflect a growing recognition that quantum computing will be strategically and economically defining-and that now is the time to scale.

PsiQuantumalso develops the algorithms and software needed to make these systems commercially valuable. Our application, software, and industry teams work directly with leading Fortune 500 companies-including Lockheed Martin, Mercedes-Benz, Boehringer Ingelheim, and Mitsubishi Chemical-to prepare quantum solutions for real-world impact.

Quantum computing is not an extension of classical computing. Itrepresentsa fundamental shift-and a path to mastering challenges that cannot besolvedany other way. The potential is enormous, and we have a clearpathto make it real.

Come join us.

Position summary:
PsiQuantum is seeking an Integrated Photonics Engineer - Active Devices andCircuits to help develop active components and circuits for the world's first fault-tolerant quantum computer.The hiring level and scope for this role will be calibrated to the selectedcandidate's experience and strengths. Candidates with relevantPhD/postdoctoral exposure, as well as those with additional industryexperience, are encouraged to apply.

The candidate will independently own the design, modeling, testing, characterization, and data analysis of active photonic devices and circuits. The Photonics Engineer will collaborate closely with teams across PsiQuantum-including electronics, manufacturing, test, packaging, and system validation-to achieve these goals. A successful candidate is expected to have hands-onexperience and knowledge in active photonic technologies such as electro-opticphase shifters, switches, modulators, and related components.

Responsibilities:

• Design, simulate, andoptimizenovel integrated photonic devices and photonic integrated circuits for quantum computing

• Take a leading role in photonictapeouts, including hands-on layout, DOE and circuit design, planning, and interfacing with stakeholders such as packaging teams and electronic driver designers

• Collaborate with dedicated test and lab teams to

• Plan and execute automated high-volume tests

• Develop new test methods when needed

• Develop and implement new analysis methods as necessary

• Analyze measurement data and interpret analysis results to understandand improve components and circuits

• Collaborate across multidisciplinary engineering teams to build, test, andcharacterize high-performance photonic chips and assemblies, includingassembly-levelcharacterization of builds that integrate photonic circuits,PCBs, drivers, and related hardware.

• Mentor junior staff members

Qualifications:

• MS or PhD in electrical engineering, applied physics, optical engineering,or related discipline

• PhD with relevant exposure to integrated photonics and electro-opticdevicesrequired; 3+ years of industry experience in integrated photonicstechnologiesisstronglypreferred, experience includes:

• Deepexpertisein integrated photonic devices-including bothpassive and active components-with a strong focus on electro-opticphase shifters and modulators (e.g., in thin-film lithium niobate,BTO, doped silicon, or III-V materials such asInP, GaAs,AlGaAs,InGaAsP); experience with high-speed operation (10 GHz bandwidthand beyond) and experimental characterization is a strong plus.

• Experience in the design and modeling of photonic and electro-opticcomponents using industry-standard tools such as AnsysLumerical,Tidy3D, COMSOL Multi-physics, Meep, etc.

• Knowledge inmodeling ofphotonic circuits (e.gusingLumericalInterconnect or SAX) is a plus.

• KnowledgeRF concepts, signalintegrityand experience withsimulation tools such as HFSS and ADSisa plus.

• Experience with photonictapeoutsand understanding of thefoundry process.

• Photonic layout experience(usinge.g.IPKISS,GDSFactory, etc.)

• Understanding orhands onexperience with photonic packaging is aplus.

• Understanding ofphotonic-electronic interfaces (drivers, TIAs, etc.)is a plus.

• Deepexpertisein the characterization of integrated passive andactive photonic components; hands-on experience with high-speedcharacterization techniques-such as S-parameter measurements,large-signal time-domain analysis of active photonic devices, andassembly-level characterization-is strongly preferred. Familiaritywith lab equipment such as oscilloscopes, signal generators, VNAs,high-speed probes, and related RF/photonic test setups isa strongplus.

• Proficientin programming languages such as Python andMatlab.

• Strong data analysis skills, including visualization and making data-drivendesign decisions

• Collaborative in a multi-disciplinary startup environment.

• Ability to work independently with limited direction.

• Experience in project planning and management.

• Proven team player with an ability to work with local and remote teammembers

• Excellent verbal and written communication skills withanability tocommunicate effectively to various audiences.

• Strong critical thinking, creative, innovative, analytical, anddetailorientedproblem-solving skills.

[We are open to adjusting the compensation to experience level]

PsiQuantum provides equal employment opportunity for all applicants and employees. PsiQuantum does not unlawfully discriminate on the basis of race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), gender identity, gender expression, national origin, ancestry, citizenship, age, physical or mental disability, military or veteran status, marital status, domestic partner status, sexual orientation, genetic information, or any other basis protected by applicable laws.

Note: PsiQuantum will only reach out to you using an official PsiQuantum email address and will never ask you for bank account information as part of the interview process. Please report any suspicious activity to recruiting@psiquantum.com.

We are not accepting unsolicited resumes from employment agencies.