Ground Software Engineer Senior

York Space Systems; Greenwood Village (CO); Hybrid; USD 120,000 - 180,000; Full time

Job summary

York Space Systems is seeking a Senior Full Stack Software Engineer to build a modern web-based platform (React/TypeScript, C# .NET) with a Docker/Kafka microservice stack used to monitor and control spacecraft across missions.

You will own end-to-end features, mentor engineers, and collaborate with operators, customers, and UI/UX to solve hard problems like collision avoidance and ground station optimization. Hybrid work policy—4 days in office.

Qualifications

• Bachelor's degree in Computer Science or related field.
• 6+ years of full-stack software engineering experience.
• Strong expertise in C# with multithreaded apps and real-time data handling.
• Strong React proficiency and modern architecture knowledge.
• Experience designing and consuming REST APIs at scale.
• Experience with SQL databases and query optimization.
• Proficiency with Git in a collaborative environment.
• Ability to mentor engineers and drive code quality.
• Excellent communication across technical and non-technical audiences.

Responsibilities

• Develop key user-facing features using TypeScript, React, C#, MSSQL, InfluxDB, Kafka, and Python.
• Translate designs into high-quality, maintainable code.
• Build reusable components and scalable services across the platform.
• Engineer algorithms for scalability and automation.
• Write unit and integration tests and documentation.

Skills

Full-stack software engineering

React

C#/.NET

REST APIs

SQL databases

Git collaboration

Mentor engineers

Agile ceremonies

Security clearance or ability

TypeScript

Education

Bachelor's degree in Computer Science or related field

Tools

Docker

Kafka

MSSQL

InfluxDB

Python

Yarn

Babel

Material-UI

Job description

York Space Systems is seeking a Senior Full Stack Software Engineer who is passionate about building software thatpushes the bounds ofwhat'spossible. Our software is a modern web-based application (React/TypeScript, C# .NET) with a microservice infrastructure (Docker, Kafka, REST) that operators use tomonitorand control constellations of spacecraft across several active missions.

As a senior member of the team,you'lltake end-to-end ownership of complex features, drive technical planning and breakdown, and actively invest in the growth of the engineers around you.You'llwork closely with engineers, satellite operators, customers, and UI/UX to tackle hard problems like:

• Collision avoidance,conjunction analysis, and orbit-raising maneuver planning
• Operation center failover and continuity of control
• Cross-satellite network maintenanceand space-to-ground link management
• Ground station contactscheduling and pass optimization
• Multi-vehicle mission coordination

Your work will be integrated with our in-house simulation software and deployed in Mission Operation Centers where it directly supports active missions in orbit.

Priorspace-industryexperienceisnotrequired.

PositionDetails

• Teamsize:6-8developers
• RemotePolicy:Hybrid(4daysinoffice)

Responsibilities

• Develop key user-facing features to support both current and future missions using TypeScript, 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 tests and documentation for internal users and customers
• Write integration tests against simulation tools to validatebehavior against realistic mission scenarios
• Participate in agile ceremonies including sprint planning, standups, and retrospectives
• Other duties as assigned

Team Leadership

• Collaborate with engineers, operators, UI/UX, and customers across departments
• Mentor junior and mid-level engineers through code reviews, pair programming, and design discussions
• Contribute to sprint planning, technical scoping, and cross-team alignment on feature work
• Help establishand advocate for engineering best practices across the team

RequiredQualifications

• Bachelor's degree in Computer Scienceor related field
• 6+ years of full-stack software engineering experience
• Deep expertisein strongly typed backend languages, particularly C#, including multithreaded applications, concurrency patterns, and near-real-timedata handling
• Strong proficiencyin modern React and its core principles, includingcomponentarchitecture and performance optimization
• Experience designing and consuming REST APIs at scale
• Experience with SQL databases, including schema design and query optimization
• Proficiencywith common front-end tooling such as Yarn, Babel, and Material-UI
• Experience with Git in a collaborative, multi-contributor environment
• Demonstrated ability to mentor engineers and drive code quality through reviews and design discussions
• Proven ability to collaborate across engineering, design, and operational stakeholders
• Exceptionnal problem-solving skills with the ability to navigate ambiguous requirements independently and drive to resolution
• Strong verbal and written communication skills, including presenting technical concepts to non-technical audiences
• Ability to thrive in a fast-paced, mission-driven environment
• Active security clearance or ability to obtain one

PreferredQualifications

• Experience working across a polyglot stack including Python, Kafka, andInfluxDB
• Experience with modern state management tools such as TanStackQuery
• Experience designing and executing forward and backward compatible database migrations and deployment strategies in live production environments
• Experience with feature flagging strategies, including gradual rollouts, environment-based toggles, and flag lifecycle management
• Experience with container-based installation and deployment strategies, including Docker and CI/CD pipeline integration
• Experience managing backend caching layers, including cache invalidation strategies and distributed cache patterns in resource-constrained environments
• Familiarity with modern security practices including API token management, CUI or classified information handling, and/or air-gapped environments