Mid-Level Software Engineer position at Leidos.| United States of America

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Leidos Mid-Level Software Engineer

Experience: 12-years

Pattern: Full time

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Huntsville, AL....United States of America

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Looking for an opportunity to make an impact? At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. Your greatest work is ahead! Leidos’ Defense Systems Uncrewed Systems Integration and Test is seeking a motivated and ambitious Mid-Level Software Engineer to join the Software, Simulation, Systems Engineering and Integration Directorate (S3I) Joint Technology Center – Systems Integration Lab (JSIL) Technology and Certification Center. This position Develops technical solutions that require collaboration with internal experts, deep analyses and understanding of impact on end-product/solution. You will also develop solutions to technical problems and issues that are unclear and require deep technical knowledge. If this sounds like the kind of environment where you can thrive, keep reading! Leidos Defense Sector provides a diverse portfolio of systems, solutions, and services covering land, sea, air, space, and cyberspace for customers worldwide. Solutions for Defense include enterprise and mission IT, large-scale intelligence systems, command and control, geospatial and data analytics, cybersecurity, logistics, training, and intelligence analysis and operations support. Our team is solving the world’s toughest security challenges for customers with “can’t fail” missions. To explore and learn more, click here ! Are you ready to make an impact? Share your resume with us today! Primary Responsibilities Performs hands-on software system development from lab to field application Determines computing system requirements Analyzes system capabilities to resolve problems on program intent, output requirements, input data acquisition, programming techniques and controls Prepares operating instructions Designs and develops autonomous services, desktop applications, scripts, and utility programs. End product is special use and customized software Participates in technical design sessions and collaborates with stakeholders to establish the foundational architecture for new software applications Develops rapid prototypes and proof-of-concept applications to validate design decisions and mitigate technical risks early in the development lifecycle Basic Qualifications BS degree in computer science or related technical degree plus 6-12 years+ professional software development experience or MS degree in computer science or related technical degree plus 2-8 years+ professional software development experience Proficiency in C# and the .NET ecosystem (equivalent Java experience may be substituted) Experience with software application architectural design patterns and decision-making for scalable, maintainable applications Experience with system integration, message handling, and data exchange protocols Strong understanding of software development lifecycle, version control, and agile methodologies Good understanding of markup languages (e.g., XML, YAML, HTML) Good understanding of DevSecOps practices and CI/CD pipelines Good understanding of API inputs and outputs Familiarity with Windows and Linux OS Understanding of cybersecurity principles and secure coding practices Strong analytical and organizational skills to handle multiple tasks and projects and to work independently Excellent written and verbal communication skills. Must be a U.S. citizen Must be able to obtain and maintain a Secret clearance. Must be a resident of Huntsville, AL or willing to relocate to the Huntsville, AL area. Preferred Qualifications Proficiency in one or more of the following scripting languages: Bash, Python, or PowerShell Experience with containerization (Docker, Kubernetes), microservices, or cloud-based architectures Effective written and oral communication skills are also required to work with all levels of staff and managers Proficiency in Microsoft Office If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: April 22, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $87,100.00 - $157,450.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Mid-Level Software Engineer job opportunity at Leidos.

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