Senior Space Software Engineer - Mission-Critical Systems

CesiumAstro; Denver (CO); On-site; USD 184,000 - 225,000; Full time

Benefits offered by this job

Stock options

Health benefits

Dental

Vision

HSA

FSA

Life insurance

Disability

Retirement plans

Job summary

CesiumAstro in the United States is hiring a Staff Software Engineer to lead space-centric software initiatives, building modern full-stack applications and modernizing legacy space-ground systems. You will design distributed, high-availability solutions and mentor junior engineers in a fast-paced startup-like environment.

The role requires 12+ years of experience, strong DoD/IC DevSecOps exposure, and expertise in C++, C#, Rust, Python, or Go, with cloud services and database design.

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.
• Experience with DoD/IC programs, ATO processes, or DevSecOps on classified systems.
• Experience developing in C++, C#, Rust, Python, or Go.
• Experience with SQL/NoSQL database design and integration.
• Experience with cloud services (AWS, Azure, or GovCloud variants).
• Experience with GitHub, Jira, and Confluence.
• U.S. Citizenship is required for this position along with the ability to obtain a Secret security clearance.
• Ability to travel up to 10%.

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 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.

Skills

12+ years experience

Technical leadership

Microservices architecture

APIs & messaging

Cloud services

GitHub/Jira/Confluence

Mentoring

DevSecOps on classified systems

Programming languages

Education

Bachelor’s degree in Software/Computer Engineering or related field

Tools

C++

C#

Rust

Python

Go

SQL/NoSQL

AWS/Azure GovCloud

Job description

CesiumAstro in the United States is hiring a Staff Software Engineer to lead space-centric software initiatives, building modern full-stack applications and modernizing legacy space-ground systems. You will design distributed, high-availability solutions and mentor junior engineers in a fast-paced startup-like environment.

The role requires 12+ years of experience, strong DoD/IC DevSecOps exposure, and expertise in C++, C#, Rust, Python, or Go, with cloud services and database design.