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WindBorne Systems

Atmospheric data collection via controllable balloons

Forward Deployed Operator

Full-TimeUpdated on 10/15/2026
$90k - $120k+ Stock options
Mid
Palo Alto, CA, USA+1 moreMore locations: Redwood Shores, Redwood City, CA, USA
In PersonIn-person work is required at the Redwood Shores location, with travel all over the world for operations.
Business & StrategyBusiness Operations

About the job

Requirements
  • When procedures do not exist, create them and take initiative on work that needs to be done.
  • Show genuine curiosity about how the world works and interest in learning about balloons, atmospheric science, radio, airspace, and defense technology; prior background in these areas is not required.
  • Be able to explain the technology and operations to customers and build their trust, communicating effectively with external collaborators.
  • Be comfortable with uncertainty and shifting priorities as procedures, hardware, and customer priorities change.
Responsibilities
  • Own end-to-end operational performance across a rotating set of projects.
  • Coordinate with engineering on technology readiness, manufacturing on hardware volume, and the Flight Control team on in-flight priorities during military exercises, then communicate results to the customer.
  • Coordinate operational rollouts of new hardware, such as ocean sensing buoys or radio ground stations.
  • Identify recurring bugs that affect constellation-wide performance.
  • Oversee the constellation’s response to tropical storms by gathering relevant data, avoiding other meteorological aircraft in the region, creating visualizations, and communicating findings.
  • Travel internationally to conduct unusual operations, including balloon recovery and establishing temporary launch sites.
  • Work on documentation and tooling as needed and shepherd groups of balloons across long distances.

About the company

WindBorne Systems collects and sells atmospheric data using a fleet of specialized, controllable balloons. These balloons navigate through different layers of the atmosphere to capture specific data "slices" repeatedly, providing 10 to 100 times more information per dollar than traditional methods. Unlike static sensors or standard weather balloons, this system can be steered to specific altitudes and locations globally to meet the needs of weather forecasters and climate researchers. The company's goal is to provide a more cost-effective and comprehensive way to monitor the Earth's atmosphere at scale.

Company Size

51-200

Company Stage

Series B

Total Funding

$58M

Headquarters

Redwood City, California

Founded

2015

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Simplify's Take

What believers are saying

  • August 2026 Series B raised $37 million, funding compute and network expansion.
  • WindBorne said revenue tripled in 2026 alongside balloon network growth.
  • WeatherMesh-6 claims top benchmark accuracy, strengthening sales to traders and agencies.

What critics are saying

  • October 2025 United 737 collision exposed aviation liability and forced transponder changes.
  • Tomorrow.io's 2026 NOAA contracts and expanding satellite fleet intensify commercial competition.
  • Private-sector adoption remains thin; government agencies still anchor revenue and bargaining power.

What makes WindBorne Systems unique

  • WindBorne pairs autonomous balloons with WeatherMesh-6, a proprietary forecasting stack.
  • NOAA assimilates WindBorne observations into GFS, validating the data product.
  • Its 600-balloon, 20-launch-site network creates a hard-to-replicate atmospheric dataset.

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Benefits

  • Health Insurance
  • Dental Insurance
  • Vision Insurance
  • Unlimited Paid Time Off
  • 401(k) Company Match
  • Stock Options

Growth & Insights and Company News

Headcount

6 month growth

2%

1 year growth

-1%

2 year growth

-1%
TechJuice
Oct 14th, 2026
Why the US Air Force wants data from A startup's 700 floating balloons.

Why the US Air Force wants data from A startup's 700 floating balloons. By Abdul Wasay | 4 hours ago | WindBorne Systems has won a contract worth up to $49 million from the US Air Force. The government awarded this deal without competitive bidding because it determined that WindBorne was the only company that could meet its data collection needs. As a result, this contract also marks the largest in the company's history. However, the Air Force has only ordered $1.7 million in services so far under its pay-as-needed structure. The deal specifically involves the 557th Weather Wing and the 16th Weather Squadron. Under this arrangement, WindBorne will supply weather data from its fleet of roughly 700 autonomous balloons. These patented balloons weigh under 2 kilograms each and can stay airborne for over 50 days, with the company's record standing at 104 days. In addition, one balloon has completed a double circumnavigation of the globe in a single flight. WindBorne was founded at Stanford University and is now based in Palo Alto, California. CEO John Dean and CTO Andrey Sushko lead the company. Furthermore, the startup raised $37 million in its Series B round at a $250 million valuation. Khosla Ventures and Galvanize co-led that round, while TransLink Capital and Lux Capital also participated. The balloons steer themselves by releasing sand ballast or venting gas to ride different wind currents. Because of this design, they collect up to 150 times more data per cost dollar than conventional weather balloons. Moreover, each flight records dozens of vertical atmospheric profiles measuring temperature, wind speed, pressure, and humidity. The World Meteorological Organization notes that 85% of the atmosphere remains inadequately measured, so this data fills a critical gap. On top of that, WindBorne released its WeatherMesh 6 AI model in early summer 2026. This transformer-based system generates a 10-day forecast in under 60 seconds on a single GPU. That makes it over 1,000 times faster than traditional physics-based models. It also achieves 3-kilometer resolution across the US and Europe. Chief Product Officer Kai Marshland says the model is "as accurate five days out as a traditional forecast is the day before." Additionally, it performs up to 30% better than the European Centre for Medium-Range Weather Forecasts model and 11% better than Google DeepMind's GraphCast. In August 2026, WindBorne became the first company to send an unpowered flight into a typhoon's eye. Sushko called this mission "one of the first times that a deep-learning model was used for actual operational decisions." Similarly, the company had previously sent six balloons through Hurricane Milton in October 2024. Meanwhile, WindBorne has also held a separate Navy contract since July 2024 to extend WeatherMesh into subseasonal forecasting. Beyond the military, WindBorne has served NOAA as an operational customer since early 2023. The company also works with the National Center for Atmospheric Research and the Defense Innovation Unit. Furthermore, it now sells forecasts to investment funds that predict commodity prices. Governments worldwide spend roughly $10 billion per year on weather observation, and WindBorne estimates the total addressable forecasting market at $100 billion. The company also plans to scale to 10,000 balloons by 2028 with around 300 launches per day from approximately 30 sites. It is currently replacing satellite communications on its balloons with a mesh radio network. On top of that, WindBorne has started dropping aerial sensor packages that become floating ocean buoys after descent. Dean calls the resulting dataset a "planetary nervous system."

BlueBoffin
Oct 12th, 2026
WindBorne wins a hefty US Air Force contract for its balloon data.

WindBorne wins a hefty US Air Force contract for its balloon data. Published: 2026-10-12 18:19 | Source: TechCrunch " AI A Silicon Valley startup that uses weather balloons and AI to predict the weather won a U.S. military contract worth almost $50 million. The U.S. Air Force has awarded WindBorne Systems a contract worth up to $49 million to buy data collected by the company's fleet of autonomous weather balloons. WindBorne Systems currently has around 700 weather balloons flying globally, collecting atmospheric sensor readings that are sold to customers and used to feed the company's AI weather forecasting model. The contract is the largest the company has participated in and will support the continued growth of the constellation and research and development to improve the hardware and performance of the balloons. WindBorne Systems has developed a deep-learning weather forecasting model called WeatherMesh 6, which provides more accurate forecasts than traditional models. The company has worked closely with the U.S. government and has become the first organization to send an unpowered flight system to collect data in the eye of a typhoon. The use of AI in weather forecasting has become more prevalent in recent years, with models built by frontier labs and government agencies proving more accurate than traditional forecasts. WindBorne Systems' contract with the U.S. Air Force is a significant development in the field of AI weather forecasting, as it demonstrates the potential for AI to be used in operational decisions. The company's ability to maneuver its balloons using wind and weather models has also enabled it to collect data in previously inaccessible areas, such as the eye of a typhoon. The contract is expected to support the continued growth of WindBorne Systems and the development of its AI weather forecasting capabilities. The company has raised $37 million in a Series B round to continue scaling its business and has released the latest version of its forecasting model, which provides more accurate forecasts than traditional models. The use of AI in weather forecasting has the potential to revolutionize the field, enabling more accurate and efficient forecasting. WindBorne Systems' contract with the U.S. Air Force is a significant step towards this goal, demonstrating the potential for AI to be used in operational decisions and enabling the collection of data in previously inaccessible areas. The company's deep-learning weather forecasting model, WeatherMesh 6, is a key component of this effort, providing more accurate forecasts than traditional models. The contract is also expected to support the continued growth of WindBorne Systems, enabling the company to further develop its AI weather forecasting capabilities and expand its operations. In the future, the use of AI in weather forecasting is expected to become even more prevalent, with models built by frontier labs and government agencies continuing to improve in accuracy and efficiency. WindBorne Systems is well-positioned to play a key role in this development, with its contract with the U.S. Air Force demonstrating the potential for AI to be used in operational decisions. The company's ability to collect data in previously inaccessible areas, such as the eye of a typhoon, is also expected to enable new insights and discoveries in the field of weather forecasting. Overall, the contract between WindBorne Systems and the U.S. Air Force is a significant development in the field of AI weather forecasting, demonstrating the potential for AI to be used in operational decisions and enabling the collection of data in previously inaccessible areas. The company's deep-learning weather forecasting model, WeatherMesh 6, is a key component of this effort, providing more accurate forecasts than traditional models. The contract is also expected to support the continued growth of WindBorne Systems, enabling the company to further develop its AI weather forecasting capabilities and expand its operations. No more hand-written code" or AI-free art for delayed Marvel/Star Wars shooter. Russian bloggers warn Russia's hyper-centralized digital economy is vulnerable. Learn how to run OpenAI GPT-6 Sol, Luna, and Astra on Amazon Bedrock through global cross-Region inference from Singapore, Jakarta, Thailand, Malaysia, and Taipei. This post covers the Converse and OpenAI-compatible APIs, IAM and SCP permissions, quota sizing, and monitoring inference from your source Region. Learn how to deploy decision models with llama.cpp on Amazon SageMaker AI. This technical how-to serves OpenAI-compatible chat completions with the AWS Deep Learning Container for llama.cpp, then extends the runtime with SemIf to return probabilities over declared options on CPU or GPU. Published: 2026-10-12 16:45 | Source: TechCrunch " AI Journalists, entrepreneurs, and even some public relations professionals will tell you that the PR process is broken. But could AI actually make things better? Published: 2026-10-12 16:27 | Source: TechCrunch " AI Blueprints AI, a bootstrapped startup based in Santa Monica, developed software that produces code-compliant construction blueprints from a photo, PDF, or sketch.

TechCrunch
Oct 12th, 2026
WindBorne wins US Air Force weather balloon data contract worth up to $49M

The US Air Force will buy data from WindBorne Systems' fleet of autonomous weather balloons under a contract worth up to $49 million. It is the largest contract the startup has taken part in. The Air Force pays only for data it needs and can order specific regions at specific times. It has so far ordered $1.7 million worth, and executives expect more orders. WindBorne, founded in 2015 and based in Redwood City, California, has about 700 balloons collecting atmospheric readings. It sells the data and feeds it into its own AI weather forecasting model. In August, it said it had raised a $37 million Series B round. The contract was awarded without competitive bidding.

Intelprise
Oct 12th, 2026
WindBorne wins a hefty US Air Force contract for its balloon data.

WindBorne wins a hefty US Air Force contract for its balloon data. On October 12, 2026 A Silicon Valley startup that uses weather balloons and AI to predict the weather won a U.S. military contract worth almost $50 million.

Fundraise Insider
Aug 10th, 2026
WindBorne raises $37M Series B for AI weather forecasting.

WindBorne raises $37M Series B for AI weather forecasting. August 10, 2026 Fundraise Insider tracks newly funded startups each week and delivers verified sales leads of C-suite contacts straight to your inbox, so you reach the right people while the funding is still fresh. See pricing. WindBorne Systems has raised an oversubscribed $37 million Series B co-led by Khosla Ventures and Galvanize, with TransLink Capital, Lux Capital and existing investors participating. Total funding now exceeds $62 million. The company pairs hardware with models. It flies autonomous long duration sensing balloons, more than 600 of them aloft at any given time, and feeds the readings into its own AI forecasting system. The bet is that better observations, not just better models, are what improve a forecast. Both sides of the business tripled over the past year. The global balloon network tripled in size and revenue tripled alongside it. WindBorne recently released WeatherMesh-6, which the company says ranks as the most accurate weather forecasting model in the world on publicly available benchmarks. Based in Redwood City, California, the company will use the money to expand the balloon constellation, secure more compute, and build the next generation of WeatherMesh models and weather intelligence products.