The startup develops a satellite digital twin platform that utilizes simulation software to enhance the design and testing workflows of spacecraft systems. This technology enables engineering teams to create robust space systems more efficiently, ensuring safer operations and minimizing space debris through streamlined functional testing processes.
Funding
$2.4M raised to dateRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.


Founders
Product
Problem
Space mission design, operations, and engineering teams often rely on disparate tools and models, leading to fragmented data, delays, and errors. Traditional simulation tools focus on isolated assets rather than holistic systems, resulting in inefficient testing and training, especially as missions scale to constellations.
Solution
Zendir provides a digital twin platform that bridges the gap between design, testing, and operations, offering a single source of truth for engineering, operations, and mission planning teams. The platform enables users to build high-fidelity models of space missions, integrate external software, and develop custom applications. With digital twins of each satellite in a constellation, operators gain real-time insights and transition from simulation to reality, reducing risk and ensuring mission success as designs scale. The platform includes Nominal Studio for drag-and-drop mission design, Nominal Editor for customizable digital twin sandboxes, and Nominal API for constellation-scale compute.
Target Audience
The primary users are space mission designers, engineers, and operators involved in satellite and constellation development, as well as organizations seeking to train AI agents for autonomous mission support.
Features
- Drag-and-drop interface (Nominal Studio) for rapid mission design and planning
- Growing digital library of COTS components, mission templates, and training scenarios
- Ability to scale single spacecraft designs into full constellations with a few clicks
- Import custom components and digital twins from Nominal Editor into Nominal Studio
- System-of-systems simulation architecture for building high-fidelity models
- Open architecture for integrating existing tech stacks and creating custom applications
- REST API (Nominal API) for scaling simulations from single satellites to constellations
- Ability to train AI agents for autonomous mission support using simulated data streams