Ayar Labs logo

Engineer, Product and Test Hardware Design

Ayar Labs San Jose, California, United States

onsite
Posted Aug 12, 2026

**Role & seniority: ** Hardware Engineer, Product & Test Hardware Design (mid-level/early-career; 1+ years experience)

**Location & work type: ** San Jose, CA — on-site

**Stack / tools: **

  • EDA: Cadence schematic + PCB layout (or similar)

  • Hardware documentation: schematics, mechanical drawings, PCB layouts, BOMs

  • Test & lab equipment: automated test equipment (ATE) instruments; optical/electrical instrumentation

  • Scripting (preferred): Python

  • Domain: transmission line theory; impedance control; differential signaling; PAM4/NRZ; RF signals

  • Top 3 responsibilities:

    • Design/develop probe cards and load boards for production testing (using inputs from Design/Product)

    • Design/develop small circuit boards for characterization testing and support bring-up/debug

    • Partner with vendors to source test hardware and provide lab support (rework/soldering/troubleshooting)

  • Must-have skills:

    • BSEE (or equivalent) + 1+ years

    • High-density multi-layer PCB design and multi-layer MLO probe cards

    • Ability to read/use mechanical drawings, schematics, PCB layouts, BOMs

    • Cadence (or equivalent) schematic/PCB layout experience

    • Strong RF/high-speed fundamentals: transmission lines, impedance control, differential signaling; PAM4/NRZ

  • Nice-to-haves:

    • ATE integration/configuration experience

    • Python for experiment/analysis automation

    • Electro-optical / photonics circuit design & valid

Full Description

Engineer, Product & Test Hardware Design

Location: San Jose (on-site)

Ayar Labs is shattering AI data bottlenecks by moving data at the speed of light. As pioneers of co-packaged optics (CPO), we are using light instead of electricity to move data faster, further, and with a fraction of the energy needed to fuel the explosive growth of AI models.

Backed by industry giants like NVIDIA, AMD and Intel and manufactured in partnership with the world’s leading semiconductor ecosystem, Ayar Labs’ co-packaged optics solution is key to unleashing next-generation AI scale-up architectures.

Ayar Labs is growing rapidly to meet the demand for Optical Interconnects at production scales. The Product and Test Engineering team at Ayar Labs is hiring a Hardware Engineer to support the development and maturity of the production Test systems. Using schematics, drawings, and direct interaction with our Design and Product teams, this person will develop and bring up the probe cards and circuitry we use to test our next-generation TeraPHY and SuperNova devices.

Key Responsibilities

  • Design and develop probe cards and load boards for Production Test based on inputs from Design and Product teams
  • Design and develop small circuit boards and related hardware for Characterization Test based on inputs from Product and Test teams
  • Work with vendors to source high-quality probe cards, load boards, and other circuitry to support Production and Characterization Test
  • Perform bring-up and debugging for Test hardware
  • Operate test equipment, and troubleshoot basic issues related to optical instrumentation, electrical components, and software
  • Maintain and support test equipment, including installing hardware and software
  • Provide hardware technical support to both internal teams and external customers
  • Provide lab support for Characterization Test hardware (rework, soldering, and troubleshooting)

Basic Qualifications

  • BSEE ,or equivalent, and 1+ year(s) of industry experience designing high-density multi-layer printed circuit boards (PCBs) and multi-layer organic (MLO) probe cards
  • Strong knowledge of how to read and use engineering mechanical drawings, schematics, PCB layouts, and Bills of Materials
  • Experience using Cadence schematic and PCB layout tools (or similar EDA tools)
  • Deep understanding of transmission line theory, impedance control, differential signaling, PAM4/NRZ channels, and RF signals

Preferred Qualifications

  • Hands-on experience with Automated Test Equipment instruments, configurations, and hardware integration
  • Experience using Python software to automate experiments and analyses
  • Knowledge of electro-optical device circuit design, testing, and validation
  • Fundamental understanding of semiconductor electronics, optics, and photonics

Salary Range: $130,000 - $160,000

NOTE TO RECRUITERS

  • Principals only. We are not accepting resumes from recruiters for this position. Remuneration for recruiting activities is only applicable subject to a signed and executed agreement between the parties. Please don’t send candidates to Ayar Labs, and do not contact our managers.

Ayar Labs is an Equal Opportunity Employer and is strongly committed to all policies which will afford equal opportunity employment to all qualified persons without regard to age, sex, national origin, race, color, ethnicity, creed, religion, gender identity, sexual orientation, disability, veteran status, or any other characteristic protected by law. It is the policy of Ayar Labs to provide reasonable accommodation when requested by a qualified applicant or employee with a disability, unless such accommodation would cause an undue hardship. Veterans are more than welcome and encouraged to apply.

PCB DesignHardware EngineeringProbe CardsLoad BoardsCadenceSchematic CaptureTransmission Line TheoryImpedance ControlDifferential SignalingPAM4NRZRF SignalsAutomated Test EquipmentPythonSolderingPhotonicsmulti-location

Cookies & analytics consent

We serve candidates globally, so we only activate Google Tag Manager and other analytics after you opt in. This keeps us aligned with GDPR/UK DPA, ePrivacy, LGPD, and similar rules. Essential features still run without analytics cookies.

Read how we use data in our Privacy Policy and Terms of Service.