Senior Staff Software Engineer - Fullstack
Build full-stack applications and modernize legacy systems for space mission software, integrating distributed architectures, cloud services, and secure DevSecOps pipelines.
- Compensation
- $184K–$225K / yr
- Location
- Westminster, CO
- Work setup
- Onsite
- Seniority
- Staff
- Employment
- Full time
- Experience
- 12+ years
- Category
- Fullstack
- Posted
Skills
Must have
- 12+ years of relevant software engineering experience
- Bachelor’s degree in Software Engineering, Computer Engineering, or relevant field
- Technical leadership in software modernization or distributed systems
- Architect microservices, APIs, message buses, and high-availability systems
- Integrate and test software for space-based or ground mission systems
- Mentor junior engineers and guide design decisions
- Develop in C++, C#, Rust, Python, or Go
- SQL/NoSQL database design and integration
- Cloud services (AWS, Azure, or GovCloud variants)
- GitHub, Jira, and Confluence
- U.S. Citizenship and ability to obtain Secret security clearance
Nice to have
- Existing security clearance (TS/SCI preferred)
- Experience supporting DoD/IC programs
- Build software for spacecraft, OPS software, or flight/ground segment integration
- High-performance computing, distributed processing, or real-time systems
- DevSecOps, IaC, and automated test frameworks
- DLT, blockchain, or consensus protocols
- Modern UI/UX frameworks (React, Vue, Svelte, Blazor, etc.)
Full description
Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State.
At CesiumAstro, we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team.
We are seeking a Staff Software Engineer to support several new, space-centric programs across the DoW and IC. We are looking for engineers who thrive in a fast-paced startup environment and enjoy solving hard problems. Our culture is simple: work hard, solve real problems, build things that matter.
JOB DUTIES AND RESPONSIBILITIES
- Build modern full-stack applications in support of space mission systems.
- Integrate and modernize legacy space-related ground and flight software.
- Develop distributed applications leveraging microservices, cloud-native architectures, and Distributed Ledger Technology (DLT)/consensus frameworks.
- Support on-orbit and ground system integration & test, including emulation, simulation, and interface validation.
- Implement DevSecOps pipelines, automated testing, and secure software practices.
- Develop modern UI/UX interfaces for mission operators and analysts.
- Work closely with space system engineers, mission integrators, and operations teams.
- Contribute to a mission-focused engineering culture where your ideas truly shape the product.
JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS
- Bachelor’s degree in Software Engineering, Computer Engineering, or relevant field.
- 12+ years of relevant software engineering experience.
- Demonstrated technical leadership across software modernization or distributed systems
- Experience architecting microservices, APIs, message buses, and high-availability systems
- Expertise integrating and testing software for space-based or ground mission systems
- Ability to mentor junior engineers and guide design decisions