Senior Software Engineer - Space Systems, Stock Options

CesiumAstro; Westminster (CO); On-site; USD 133,000 - 161,000; Full time

Benefits offered by this job

Stock options

Health insurance

Dental insurance

Vision insurance

HSA

FSA

Life insurance

Disability insurance

Retirement plans

Job summary

CesiumAstro in Westminster, CO is seeking a Senior Software Engineer to drive space-centric programs across DoD/IC. You will build modern full-stack applications, modernize legacy ground and flight software, and develop distributed systems with microservices and cloud-native architectures.

The role requires a 5+ year software engineering background, expertise in C++, C#, Rust, Python, or Go, and experience with cloud services and DevSecOps.

Qualifications

• Bachelor's degree in Software Engineering, Computer Engineering, or relevant field.
• 5+ 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
• 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 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.

Skills

Software architecture

Microservices

DevSecOps

Cloud computing

Leadership

C++

C#

Rust

Python

Go

SQL/NoSQL

AWS

Azure

GitHub

Education

Bachelor's degree in Software Engineering, Computer Engineering, or relevant field

Tools

GitHub

Jira

Confluence

Job description

CesiumAstro in Westminster, CO is seeking a Senior Software Engineer to drive space-centric programs across DoD/IC. You will build modern full-stack applications, modernize legacy ground and flight software, and develop distributed systems with microservices and cloud-native architectures.

The role requires a 5+ year software engineering background, expertise in C++, C#, Rust, Python, or Go, and experience with cloud services and DevSecOps.