Senior Frontend Software Engineer - Ground Software

York Space Systems•Greenwood Village, CO

14h•$120,000 - $190,000•Hybrid

About The Position

York Space Systems is seeking a Senior Frontend Software Engineer passionate about building software that pushes the boundaries of what's possible. The role involves working on a modern web-based application (React/TypeScript, C# .NET) with a microservice infrastructure (Docker, Kafka, REST) used by operators to monitor and control spacecraft constellations. As a senior member, you will own the frontend experience end-to-end, from design system management to real-time telemetry dashboards. You will collaborate with UI/UX, backend engineers, and operators to build interfaces that are fast, reliable, and intuitive, tackling challenges such as visualizing live satellite states, surfacing alerts, designing data transfer workflows, and ensuring UI functionality during control transfers. You will also drive frontend best practices and mentor junior engineers. Prior space-industry experience is not required.

Requirements

Bachelor's degree in Computer Science or related field
6+ years of software engineering experience with a strong focus on frontend and web application development
Deep proficiency in modern React, including component architecture, performance optimization, and state management patterns
Strong expertise in TypeScript and its application in large-scale frontend codebases
Experience building and maintaining design systems and shared component libraries
Proficiency with common front-end tooling such as Yarn, Babel, and Material-UI
Experience with Git in a collaborative, multi-contributor environment
Familiarity with backend APIs and the ability to design and consume REST APIs effectively
Demonstrated ability to mentor engineers and drive frontend code quality through reviews and design discussions
Proven ability to collaborate across engineering, UI/UX, and operational stakeholders
Exceptional 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

Nice To Haves

Experience with modern state management tools such as TanStack Query
Experience with WebAssembly (WASM) for performance-critical frontend workloads
Experience with WebGL or other canvas-based rendering for data-rich environments
Experience with offline-first development architecture and local data synchronization strategies

Responsibilities

Lead development of user-facing features using TypeScript and React, collaborating closely with UI/UX and backend engineers to deliver cohesive, performant experiences
Translate designs and requirements into high-quality, maintainable code that meets both functional and visual standards
Build and own reusable components, shared libraries, and design systems that scale across the platform
Engineer frontend algorithms and business logic to support scalability, automation, and near-real-time data presentation
Write unit tests and documentation for internal users and customers
Participate in agile ceremonies including sprint planning, standups, and retrospectives
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 establish and advocate for frontend best practices and design system standards across the team
Other duties as assigned