Software Engineer II – Flight Software

Sierra Space

. Design, develop, and test software applications for space systems and technologies .

Posted 10/27/2026full-timeCentennial • Colorado • United StatesJuniorMid-Level💰 $105,534 - $145,109 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in software design, development, and testing for space systems, with a strong foundation in programming languages such as Python or C++. Proficient in Agile methodologies and capable of obtaining a U.S. Security Clearance.

Highest-signal resume keywords

Software Development PrinciplesPython or C++ ProficiencyAgile and Scrum/Kanban ExperienceSpacecraft Flight Software DevelopmentU.S. Security Clearance Eligibility

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Software DesignSoftware TestingDebuggingCode ReviewStatic AnalysisAutomated TestingRequirements TrackingSoftware Design PatternsScripting LanguagesAutomation Tools

Soft Skills

CollaborationProblem-SolvingIndependent WorkCommunication

Tools & Technologies

GitVersion Control SystemsContinuous IntegrationAutomated Build ToolsCCSDSC2MSOMSUCISysMLUML

Industry Keywords

Space SystemsSoftware ApplicationsMission Management SoftwarePayload Control SoftwareSpace Technology Trends

Tech Stack

Tools & technologies

PythonC++

About the role

Key responsibilities & impact

Design, develop, and test software applications for space systems and technologies
Write clean, maintainable code adhering to best practices and coding standards
Collaborate with team members to understand project requirements
Contribute to innovative software solutions
Use Git and version control systems to manage code changes
Participate in code reviews to ensure code quality and development-standard adherence
Troubleshoot and resolve software-related issues
Document software designs, configurations, processes, and procedures
Stay current with software development and space technology trends
Work independently and as part of a team to deliver high-quality software solutions

Requirements

What you’ll need

Bachelor's degree in a related field or equivalent work experience in lieu of degree
Typically, 2+ years of related experience
Strong understanding of at least one programming language and general knowledge of others
Strong understanding of software development principles
Ability to design, code, test, and debug complex software applications
Experience with Agile and Scrum/Kanban methodologies
Ability to work independently and as part of a team
Ability to obtain and maintain a U.S. Security Clearance
U.S. Citizenship status is required
Preferred: proficiency in Python or C++
Preferred: experience with spacecraft flight software development
Preferred: familiarity with CCSDS, C2MS, OMS, and UCI
Preferred: experience developing mission management and/or payload control software
Preferred: experience with requirements tracking, code reviews, static analysis, repositories, and automated build tools
Preferred: familiarity with scripting languages and automation tools
Preferred: experience with continuous integration and automated testing
Preferred: knowledge of Software Design Patterns
Preferred: familiarity with SysML/UML
Preferred: experience setting up static analysis tools

Benefits

Comp & perks

Medical, dental, and vision plans
401(k) with 150% match up to 6%
Life insurance
3 weeks paid time off
Personal and professional development opportunities
Reasonable accommodations for applicants with disabilities