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# Software Engineer III with Security Clearance

- **Company:** Sierra Nevada Corporation.
- **Location:** Littleton, CO, United States
- **Experience:** Expert
- **Salary:** $108,497.0 - $149,183.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), JavaScript (Programming Language), .NET Framework, C Sharp (Programming Language), C++ (Programming Language), Static Program Analysis, Software Documentation, Software Quality, Code Review, Data Structures, Software Debugging, Desktop Computing, Linux, Hardware Design, Industry Standard Architecture, Python (Programming Language), Windows Presentation Foundation, Scrum Methodology, Red Hat Enterprise Linux, Software Tools, Software Engineering, Software Requirements Analysis, Systems Integration, TypeScript, C4ISR, ReactJS, Information Technology, Windows Services, Software Performance, Vulnerability Analysis
- **Published:** November 1, 2026
- **Apply:** https://www.adzuna.com/details/5879424053

## About the Role

* Drive continuous improvement initiatives to enhance software performance and quality. Qualifications You Must Have: * Bachelor's degree in Computer Science, Software Engineering, or related field.
 * 6+ years of experience in experience in software development.
 * Higher level relevant degree may substitute for experience.
 * Proficiency in programming languages such as Java.
 * Practical knowledge of engineering principles and practices.
 * Experience working in multi-disciplinary teams.
 * The ability to obtain and maintain a Secret U.S. Security Clearance is required. Qualifications We Prefer: * Experience with Linux (RHEL) and windows services
 * Knowledge of tactical/moving map software integration
 * Knowledge with hardware integration and protocol development
 * Background in Aerospace and Defense industry.
 * Understanding of industry standard software languages and frameworks such as C#, C++, Java, Python, Java Script/Typescript, React, WPF, and .NET
 * Experience with software tools for requirements tracking, code reviews, static analysis, library and artifact repository, and automated build.
 * Knowledge of software development methodologies such as Agile/Scrum, Waterfall, and Spiral.
 * Experienced with data structures. Essential Functions: * Ability to work on a computer for extended periods.
 * Hand/finger dexterity for coding and testing.

## Description

Do you enjoy developing new products and services? Join us! Our Software Engineers work in an agile, collective environment. As a Software Engineer III, you will lead the design, development, and optimization of complex software systems for aerospace applications. You will collaborate with cross-functional teams to ensure software meets stringent performance and quality standards. The ISR (Intelligence, Surveillance & Reconnaissance), Aviation, and Security (IAS) business area is a leader in ISR and aviation, it is a leading prime manned and unmanned aircraft systems integrator for innovative, high-performance ISR and aviation systems. Its end-to-end Command, Control, Computers, Communications and Intelligence, Surveillance & Reconnaissance (C4ISR) capabilities encompass design, integration, test, certification, ground/flight training and complete logistics support. IAS tailors solutions to customer cost, performance, and schedule requirements and designs to consistently exceed
expectations - with an unrivaled record of on time and on (or under) budget deliveries. Responsibilities: * Lead the design, development, and testing of complex software components.

 * Debug and troubleshoot advanced software issues.
 * Write and maintain detailed code documentation.
 * Conduct thorough code reviews and provide mentorship to junior engineers.
 * Collaborate with team members to ensure code quality and adherence to standards.
 * Support the integration of software with hardware systems.
 * Define software requirements and specifications in collaboration with stakeholders.