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Splendare

Electrical Engineer Intern

WindBorne Systems · Redwood City, CA

On-siteInternship$33/hr
Raised $37.1M in Aug 2026Posted Aug 12, 2026
Apply now ↗

Design, bring up, and test embedded electronics for weather balloons and ground systems, from PCB prototypes through manufacturing support. Work across PCB design, firmware bringup, and bench and environmental testing, and support deployed hardware via telemetry.

What you'll do

  • Design, prototype, and test PCBs for flight and ground systems
  • Develop firmware for bringup and testing of boards
  • Troubleshoot issues on existing hardware
  • Conduct bench and environmental testing under extreme conditions
  • Coordinate PCBA manufacturing for R&D and production

Requirements

  • Strong fundamentals in embedded circuit and system design
  • Hands-on experience troubleshooting circuit boards and electronic assemblies
  • Proficiency reading schematics and datasheets
  • Familiarity with embedded firmware development (C/C++)
  • Familiarity with SPI, I2C, UART
  • Experience with PCB layout tools (Altium)
  • Comfort with oscilloscopes, multimeters, and logic analyzers
  • Interest in the underlying physics

Nice to have

  • Bachelor's degree or higher in Electrical Engineering or related field
  • Interest in RF system development and antenna design
  • Deep knowledge of power management circuit design
  • Ability to hand solder 0402 components

Skills

Altium DesignerAntenna DesignCC++Embedded SystemsI2CLogic AnalyzersMultimetersOscilloscopesPCB DesignPower Management Circuit DesignRF DesignSPISolderingUART

Outlined skills are listed as required.

Full original description

Help design, bring up, and test embedded electronics for WindBorne’s weather balloons and ground systems, from PCB prototypes through manufacturing support.

About this role

WindBorne Systems is supercharging weather models with a unique proprietary data source: a global constellation of next-generation smart weather balloons targeting the most critical atmospheric data. We design, manufacture, and operate our own balloons, using the data they collect to generate otherwise unattainable weather intelligence.

Our mission is to eliminate weather uncertainty, and in the process help humanity adapt to climate change, be that predicting hurricanes or speeding the adoption of renewables. We are building a future in which the planet is instrumented by thousands of our microballoons, eliminating gaps in our understanding of the planet and giving people and businesses the information they need to make critical decisions. The founding team of Stanford engineers was named Forbes 2019 30 under 30 and is backed by top investors including Khosla Ventures.

WindBorne is looking for an Embedded Electrical Engineer to run hardware design, initial bringup, hardware debug, and manufacturing support of a number of key elements of our flight hardware and ground support systems. We're seeking someone who can jump between PCB design in the morning, debugging firmware in the afternoon, and searching DigiKey at night; someone who finds satisfaction in making things work in theory, in practice, and at scale, and in running through those stages as quickly as PCBA turnaround times permit.

This role is for someone who would be unfulfilled designing predictable power supplies or standard microcontroller boards. Instead, you’ll be creating systems that can reliably operate from -70°C to +40°C using components that are entirely unrated for such a task, while counting every gram and milliwatt.

We aren't looking for someone who wants to spend weeks designing the theoretically perfect circuit. Rather, we need someone who can quickly ship a design that doesn’t appear to be broken, and who genuinely enjoys spending a day at the bench playing electrical whac-a-mole when something inevitably is. The ideal candidate will understand and contribute to the big picture to ensure effort is directed only where it is most useful, while spending most of the day on the messy details of building the world’s largest balloon constellation.

Responsibilities

  • Design, prototype, and test PCBs for critical new flight and ground systems
  • Develop firmware for initial bringup of new boards and custom testing of existing boards
  • Troubleshoot and resolve (only the most pressing) issues on existing hardware
  • Conduct comprehensive bench and environmental testing to validate electrical systems under extreme conditions
  • Work closely with mechanical engineers to ensure proper integration on a vehicle with about as many structural PCBs as custom 3D parts
  • Support flight operations with troubleshooting of deployed hardware via realtime telemetry
  • Coordinate PCBA manufacturing for both R&D and production

Skills and qualifications

Required

  • Strong fundamentals in embedded circuit and system design
  • Hands-on experience troubleshooting circuit boards and electronic assemblies
  • Proficiency with reading schematics and datasheets
  • Familiarity with embedded firmware development (C/C++)
  • Familiarity with common communication protocols (SPI, I2C, UART)
  • Experience with PCB layout and design tools (we use Altium)
  • Comfort with lab equipment including oscilloscopes, multimeters, and logic analyzers
  • Interest in the underlying physics
  • Being the type of person who enjoys applying increasingly cursed out of the box solutions in order to reduce part count and complexity

Nice to have

  • Bachelor's degree or higher in Electrical Engineering or related field
  • Interest in RF system development and antenna design
  • Deep knowledge of power management circuit design
  • Ability to solder 0402 components by hand without wanting to cry

Location

1600 Bridge Pwky, Redwood City, CA. In person required.

Base pay: $33 / hour

Employment type: Internship

Work arrangement: On-site

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