Muon Space
Space is quiet until it is not. A signal crosses the atmosphere, a sensor wakes up, and somewhere on Earth a decision changes course. That is the lane Muon Space is driving in. Founded in 2021 and headquartered in Mountain View, California, Muon Space is building mission optimized satellite constellations designed to turn raw orbital vantage points into real world intelligence for climate monitoring, national security, and commercial operators who need answers before the moment passes. The company pairs software, hardware, and operations into a single vertical stack, then builds the satellites that carry it all into orbit. Think less science project, more orbital production line with purpose.
Behind that push is a founding crew that reads like a mission control roll call. Jonny Dyer, CEO and co-founder, works alongside Pascal Stang, CTO, Paul Day, VP Production, Dan McCleese, Chief Scientist, and Reuben Rohrschneider, Chief Mission Architect. The leadership bench runs deep with Gregory Smirin, President alongside Gautier Brunet, VP Product, Ryan Gray, CFO, Melissa Lawrence, VP People Operations, Tracy Morgan, VP Growth, Carl Nardell, VP Mission Engineering, Jonathan Nutzmann, Senior Director of Hardware, Cathy Olkin, VP Infrared Missions & Data, Jeremy Pack, VP Engineering, and Shirley Paley, Chief Legal Officer helping translate complex missions into working systems that survive launch, vacuum, and the brutal honesty of space.
Investors have noticed the trajectory. In August 2024, Muon Space secured a $56M Series B round and reported more than $100M in committed customer contracts that same year. One standout agreement came with Sierra Nevada Corporation to build 3 satellites for the Vindler RF mission. Momentum continued in June 2025 when an oversubscribed $89.5M Series B1 round closed, combining equity and credit facilities and bringing total Series B financing to $146M. Backers including Congruent Ventures, Activate Capital, Acme Capital, Costanoa Ventures, Radical Ventures, and ArcTern Ventures are betting that better sensors and faster constellation deployment will reshape how Earth intelligence reaches the ground.
Muon Space calls its platform Halo, and the name fits. Halo connects MuSim, a digital simulation environment that models entire missions before metal meets vacuum, with MuOS middleware that keeps spacecraft, payloads, and ground systems speaking the same language. Beneath that layer sits MuSat and MuCore, standardized satellite building blocks designed for high mix manufacturing. Instead of building 1 satellite at a time like a custom instrument, Muon Space tunes a repeatable system for each mission. In a world where data from orbit often arrives too late to matter, that shift from bespoke to scalable could be the difference between observation and action.
Scale is not theoretical here. In San Jose, California, Muon Space operates a 130,000-square-foot advanced manufacturing facility built to support production of up to 500 satellites per year in the 100–500 kg class. Roughly 70,000 sq ft are dedicated to manufacturing and another 30,000 sq ft to cleanrooms across multiple ISO classes. A 300 kW rooftop solar array powers operations while UL 2050 certified security infrastructure enables sensitive defense work. The company also deepened its vertical stack with the acquisition of propulsion startup Starlight Engines, pulling propulsion closer to the same production heartbeat as the spacecraft themselves.
Muon Space is hiring across hardware, software, mission engineering, science, and operations. Engineers here do not just design components. They own systems from concept through launch and into orbit where real missions unfold. The jobs board tells the story. Staff mission lead systems engineers guiding spacecraft from model to orbit. RF scientists extracting meaning from signals. Mechanical, electrical, and software builders shaping the Halo platform. Satellite operators keeping eyes on orbit long after launch day fades into the rearview.
Muon Space is not chasing noise. It is building the infrastructure for persistent Earth intelligence, 1 constellation at a time. If the next decade of climate monitoring, national security sensing, and commercial geospatial awareness depends on better signals from orbit, the Muon may end up carrying more weight than its particle sized name suggests. Follow the trajectory or join the mission. The hiring board is already open.
