/Companies

Cascade Space

YC X25

San Francisco, US · Founded 2025 · 7 employees · Hiring · 23 known investors

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Cascade Space develops software tools and infrastructure for designing, building, testing, and operating spacecraft communication systems. The company serves aerospace and space companies seeking to accelerate development with reduced team requirements.

Also known as Heliosphere Network Corporation · Cascade · Cascade Space Inc. · Heliosphere Network

Founders & leadership· Y Combinator alumni (X25)

Cascade Space was founded in 2025 by Jacob Portukalian and Arlen Abraham.

JPJacob Portukalian
Jacob PortukalianCo-Founder / CEOJacob Portukalian has worked as a communications systems architect at SpaceX, Tyvak, and Astra. He founded Cascade Space to develop communications infrastructure for space exploration.
AAArlen Abraham
Arlen AbrahamCo-Founder & CTOArlen Abraham has worked across aerospace, consumer goods, communications, and energy sectors, with experience spanning hardware, software, and product development.
EN
Emma NelsonExec Assistant

Investors · 23

Rolling Fun GPlisted by Rolling Fun GPLynnwood

How we know: Y Combinator's founder network · Not right? Tell us

Aliaksandr Hudzilinreported

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Capitalize VCreportedChicago · $100K – $200K

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Nova Threshold Trust Limitedreported

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Olive CapitalreportedAtherton

How we know: Y Combinator's founder network · Not right? Tell us

Tekedia CapitalreportedLagos · $1K

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Valkyrie Ventures Management, LlcreportedPark City

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Also in the syndicate · 3

Liquid 2 VenturesNova ThresholdValkyrie Ventures

Funding

SEC filings, press & company announcements

$5.9M disclosed across 1 of 4 rounds · 2025–2026

Source: company announcements and press reports — follow each round's link for the claim.

Company profile

researched Aug 2026

Cascade Space is a space communication systems company founded in 2025 and based in San Francisco. It develops tools and infrastructure for designing, building, testing and operating spacecraft communication systems, positioning itself as a commercial alternative to NASA's Deep Space Network, which the company describes as oversubscribed and unavailable for commercial missions. Its stated goal is to let customers ship faster with smaller teams.

The company has two main product lines. Cascade Designer is a browser-based tool for link budget design and simulation, with a drag-and-drop editor, a library of generic RF components and a catalog of commercially available parts from suppliers such as Plane Wave and Orbital Systems, support for vendor-supplied or user-uploaded 3D antenna patterns, CCSDS demodulator blocks computing C/N0, Eb/N0 and margin, team sharing with read-only or edit access, and an API for batch analysis of full mission trajectories from a trajectory CSV. Designer is built on spacelink, the company's open-source Python library for space communications modeling. The second line, Cascade Array, is ground infrastructure: rather than single large dishes, the company plans arrays of smaller dishes, which it argues are cheaper to build, more reliable and offer dynamic aperture size and pricing with build costs that fall over time.

On the infrastructure roadmap, the company states that its first ground station, Earth Station Zero, will be online and downlinking data from the Moon in 2026, with plans to scale to a global network by 2028; its website also advertises new capacity coming online in 2027.

Compiled by commissioned research from 9 cited public sources — announcements, filings, and press listed under research sources below.

Key figures

latest reported
HeadcountAug 20267
Open rolesJan 20251 job postings
Seed funding raisedJul 2025$5.9M
Seed funding raisedJul 2025$5.9M
Team sizeJan 20257 people
Team sizeJan 20257 people

Company-reported or press-reported figures, each dated to when it was claimed — not independently audited.

Related companies · 6

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Capella SpaceCapella Space designs, builds, and operates synthetic aperture radar (SAR) satellite constellations that provide all-weather, day-and-night Earth observation imagery at sub-0.25m resolution. It offers an automated end-to-end tasking and data delivery platform serving defense and intelligence, maritime, disaster response, and infrastructure monitoring customers.
Ares IndustriesAres Industries designs and manufactures precision missiles (Maverick and Goose) for military defense, built at volume with five-figure unit costs for use by the U.S. and allied forces.
Forge AutomationForge Automation manufactures custom metal parts on demand for mechanical engineers, with parts delivered within four days through an online CAD upload process. The company operates software-controlled factories to shorten typical lead times in the custom machining industry.
Kalam LabsKalam Labs designs and manufactures high-altitude hydrogen-based unmanned aerial vehicles and stratospheric platforms for military and defense applications, including surveillance systems, autonomous weather platforms, and stealth strike swarms capable of operating at 100,000+ feet. The company serves the Indian armed forces with edge-of-space aerial warfare technology developed and manufactured in India.

Companies working in the same space as Cascade Space.

Timeline · 6

launches, deals, and filings
Jul 2025
Cascade Space announces $5.9M seed funding

Cascade Space announced a $5.9 million seed round to build an end-to-end platform for space communication system design, test and operation, with funding directed at development of the Cascade Portal. Participants included Nova Threshold, Undeterred Capital, Y Combinator, Night Capital, Olive Capital, Valkyrie Ventures, Karman Ventures, Palm Drive Capital, Garage Capital, TRAC, Aurelia Foundry, Hawktail, MGV.VC, Pioneer Fund and Liquid 2 Ventures.

$5.9M source ↗

Jan 2025
Participation in Y Combinator Spring 2025 batch

Cascade Space is listed as an active company in Y Combinator's Spring 2025 batch, with Tom Blomfield as primary partner.

source ↗

Jan 2025
Launch of Cascade Designer

Cascade Space launched Cascade Designer, spacecraft communication system design software with a graphical editor, link margin calculation, trajectory analysis via API and team sharing.

source ↗

Jan 2025
Open-source release of spacelink Python library

Cascade Space released spacelink, an open-source Python library for link budget and communication system analysis, which underpins the Cascade Portal/Designer implementation.

source ↗

Jan 2025
Launch of deep space communications as a service

An earlier company launch presented deep space communications as a service, aimed at lunar missions.

source ↗

Jan 2025
Release of spacelink open-source Python library

The company open-sourced spacelink, a Python library of communication system analysis functions used in the Cascade Portal and Cascade Designer implementations.

source ↗

Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.

Legal entities · 1

corporate structure
Heliosphere Network Corporation

In the news

▸Research sources · 9

primary sources listed

9 public sources were cited for this profile; the first-party ones are listed here.

Frequently asked questions

What does Cascade Space do?
Cascade Space builds design software and a deep space ground station network for spacecraft communication systems.
Who founded Cascade Space?
Cascade Space was founded by Jacob Portukalian, Arlen Abraham in 2025.
Who are Cascade Space's investors?
Cascade Space's investors include Aurelia Foundry, HAWKTAIL, MGV.VC, Pioneer, Rolling Fun GP, TRAC (Third Round Analytics Capital), Undeterred Capital, Y Combinator and 12 more.
How much funding has Cascade Space raised?
Cascade Space has disclosed $5.9M raised across 1 of its 4 known rounds.
Where is Cascade Space headquartered?
Cascade Space is headquartered in San Francisco, US.