Ground Software Engineer Senior - Security Clearance; Field-; Grand Forks

York Space Systems was founded to radically improve spacecraft affordability and reliability, transforming, and enabling next- generation space mission operations worldwide. Today, York is one of the most innovative aerospace companies, specializing in end-to-end customer solutions and the rapid production of spacecraft platforms. York’s complete Space Segment Solution includes spacecraft production, payload integration, system integration & test, launch services, ground segment services, and mission operations, enabling customers to leverage York’s existing technology solutions to get to orbit rapidly and responsively.

We’re looking to expand our team across the board.

York is seeking a Senior Full Stack Software Engineer who thrives working independently and is passionate about building software that pushes the bounds of what's possible. Our software is a modern web-based application (React/Type Script, C# .NET) with a microservice infrastructure (Docker, Kafka, REST) that operators use to monitor and control constellations of spacecraft across several active missions.

In this role, you will be embedded at or near a Mission Operation Center (MOC) local to you, serving as the primary technical point of contact for that facility. You'll operate with a high degree of autonomy — often as a team of one or two — while staying closely integrated with our primary office in Denver, CO for feature development, technical direction, and longer-term project work.

This is not a traditional office role. You must be comfortable owning problems end-to-end without immediate peer support, communicating proactively across time zones, and context-switching between hands-on operational support and collaborative product development.

• You'll work closely with satellite operators, customers, and the Denver engineering and UI/UX teams to tackle hard problems like:
• Collision avoidance, conjunction analysis, and orbit-raising maneuver planning
• Operation center failover and continuity of control
• Cross-satellite network maintenance and space-to-ground link management
• Ground station contact scheduling and pass optimization
• Multi-vehicle mission coordination

Your work will be deployed in a MOC where it will directly support active missions in orbit.

• Team structure:
  Field-based; typically 1–2 engineers on-site, integrated with a remote team of 6–8 developers
• Remote Policy:
  On-Site
• Travel:
  Must be willing and able to travel to Denver, CO for onboarding, training, and periodic team collaboration
• On-Call:
  Must be available for on-call support to serve the MOC local to you

• Serve as the primary technical resource for your local MOC, providing direct support to operators and resolving issues with a high degree of independence
• Provide on-call support for mission-critical operations by responding to incidents and escalations at your assigned facility
• Integrate remotely with the Denver ground software teams for feature development, longer-term technical work, sprint ceremonies, and cross-team coordination
• Develop key user-facing features to support both current and future missions using Type Script, React, C#, MSSQL, InfluxDB, Kafka, and Python
• Translate designs and requirements into high-quality, maintainable code
• Build reusable components, shared libraries, and scalable services for use across the platform
• Engineer algorithms and business logic to promote scalability and automation
• Write unit and integration tests, including tests against simulation tools to validate behavior against realistic mission scenarios
• Write documentation for internal users and customers

• Act as the technical face of the engineering team at your local site,…