SysGit

SysGit, operated by Prewitt Ridge, Inc., develops a collaboration platform for requirements management and model-based systems engineering (MBSE) aimed at teams building complex hardware, particularly in the U.S. defense industrial base. The platform lets users create, iterate, review and share requirements and system models in a single machine-readable format, applying software development practices such as version control, branching, merging, diffing, pull requests and CI/CD to hardware engineering workflows.

The product comprises three areas: requirements management (capture, decomposition, verification, traceability and impact analysis with graphical, tabular and code views); system modeling and MBSE built on SysML v2, including views and viewpoints for different stakeholders and design reviews conducted as pull requests; and systems engineering automation, which uses CI/CD pipelines for automated model testing and validation plus AI features such as requirements generation from other engineering artifacts and generating part breakdown structures from PDFs and productivity-suite documents. The company positions the platform for government acquisition leaders as a way to embed iterative development across defense program lifecycles and reduce reliance on bespoke, vendor-locked tools.

The company's earlier product, Verve, was a requirements management and digital thread platform that maintained a graph of engineering data and decisions, captured data provenance, and propagated changes to the tools engineering teams already used, applying machine learning and advanced data techniques. Verve was described as reducing change-propagation work from months to hours and the time to build from six months to six hours.

Founding story

Co-founders Steve Massey and Zeke Brechtel met as systems engineers at SpaceX and worked in systems engineering at SpaceX and Slingshot Aerospace between 2012 and 2019. Massey supported the launch of more than two dozen spacecraft during a period spanning the early Falcon 9 missions through Falcon Heavy, and the pair also worked on internal projects such as the SpaceX Hyperloop Pod. They observed that requirements management was a persistent bottleneck — a "messy human layer" involving coordination across dozens of specialized teams and data sharing between widely varying tools and formats — and that a single spreadsheet error could propagate through an entire system and surface only after hardware was built and tested. They became involved in early automation efforts and in the wider digital engineering community, and founded Prewitt Ridge in 2019 with the initial goal of making engineering parameters accessible as numeric data through an API and shareable across tools.

Business model

The company licenses proprietary software to enterprise and government customers. Its end user license agreement covers installation of the software on customer-selected servers ("Authorized Deployments") with license scope defined per order by number of authorized users, deployments and projects, plus optional paid support services including implementation, workflow customization, troubleshooting and training. Sales are transacted through ordering documents that set out fees, and the product is positioned to run on a customer's existing Git infrastructure rather than as a fully vendor-hosted walled-garden platform.

Software licensing under an end user license agreement, priced per order according to the number of authorized deployments, authorized users and authorized projects, with additional fees for support services such as implementation, workflow customization, training and maintenance.

Traction

The company has been awarded $2.2 million in U.S. SBIR awards from the Department of Defense and completed a pair of engagements with the Air Force Research Laboratory. Its Verve platform was used by space companies including Muon Space and Hydrosat, and the company worked with the U.S. Space Force and U.S. Air Force. In 2023 it deployed on a pilot supporting a major defense acquisition system. The company states it is assessed 'Awardable' for DoD work in the CDAO Tradewinds Solutions Marketplace and maintains active deployments supporting key programs. It received an honorable mention in Fast Company's 2024 World Changing Ideas Awards.

Latest developments

The company rebranded from Prewitt Ridge to SysGit, making SysGit the name of both the company and the product, and describing the change as the culmination of a process begun more than a year earlier. It cited a team drawn from SpaceX and Slingshot Aerospace, an 'Awardable' assessment in the CDAO Tradewinds Solutions Marketplace, and active deployments supporting key programs. Product direction has shifted to a patented Git-based data architecture leveraging providers such as GitHub and GitLab, and to SysML v2 as the modeling foundation, with AI-assisted automation in development. A February 2026 post introduced a purpose-built collaborative SysML v2 IDE. The EULA for SysGit software was last updated in November 2025.