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Senior Principal DevSecOps Engineer

Clearances Required: Active DoD Secret

Location: Huntsville, Alabama, United States

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Note: This is a contingent listing for a position that is planned to open up in February 2026. Interviews may begin in December or January.

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Job Description

TCS is searching for a Senior Principal Dev/Sec/Ops Engineer to join our strong team supporting our Ground-based Midcourse Defense (GMD) customer in Huntsville, AL. The GMD program is a portion of the Missile Defense Agency's (MDA) system to protect the US and our allies from ballistic missile attack. The selected candidate will use modern development automation and management tools to work in both Linux and Windows environments, in legacy and cloud environments.

Responsibilities:

• Design, develop, deliver, and sustain new and existing cybersecurity technologies in support of further development of the GMD weapon system.
• Create, modify, and document all enhancements efforts, to include system design documents, standard operating procedures, operations and maintenance manuals/procedures, software development plans, and related documentation.
• Program design, coding, testing, debugging, and documentation.
• Recommend and utilize the appropriate programming language for each component or workload based upon performance requirements, supportability, integration with existing components, maintainability, and other selection criteria deemed applicable.
• Review current systems and analyze business functions or processes to understand the needs for which applications are being designed.
• Recommend system capabilities and objectives for assigned projects.
• Conduct quality assurance reviews.
• Develop all components and services using industry best practices such as test-driven development, centralized source code management, code reviews, and automated testing.
• Utilize continuous integration / continuous deployment (CI/CD) workflows to the maximum extent possible for all published components.
• Produce DevOps best practice templates to enable rapid implementation of DevSecOps development workflows.
• Provide subject matter expertise during the review of potential technologies proposed for integration with the environment.
• Fully document development efforts using a combination of code comments, project issue tracking, change requests, and formal documentation.
• Ensure that software deployments minimally impact production workloads running in production environments.
• Perform analysis and tests, as needed, to aid the design process and to document the end item business functionality and system performance requirements.
• Identify emerging technologies, alternatives, and standards implementations, such as machine learning (ML) and artificial intelligence (AI), to provide better support for developers and application stakeholders.

Required Qualifications:

• Bachelor's degree in computer science, information systems, Cybersecurity, or a related field with 8 years of experience; OR Master’s degree with 6 years of related experience, or 4 years with a PhD.
• Must have a DOD 8140 IAT Level II certification (ex: Security + CE or CISSP)
• Strong systems administrator experience, specifically in Windows/Linux Operating Systems environments
• Experience working with cloud technologies and platforms such as Microsoft Azure, Amazon Web Services (AWS), and Google Cloud
• Proficiency with DevSecOps practices, approaches, requirements, and iteration plans for a largescale classified government system
• Proficiency in Agile practices and principles to deliver high quality products and services
• Proficiency with Atlassian JIRA, Confluence, GitLab/GitHub, Jenkins, and Nexus repositories
• Experience working with airgap environments, classified cloud environments, and government customer networks
• Experience with ATO’s, cyber security concepts and posture, and complex implementation of security configurations in cloud networks
• Experience with security coding standard best practices, static and dynamic scanning tools, i.e., SonarQube, Fortify, Coverity
• Experience and skills in agile software principles, particularly regarding building a plan or roadmap for multiyear program / product
• Proficiency with configuring and maintaining DevSecOps Continuous Integration/Continuous
• Deployment (CI/CD) pipeline tools including best practices, automated builds and tests, quality gates, software quality, and CI tools, i.e., Jenkins.
• Proficiency with deploying and maintaining applications on Kubernetes clusters
• Proficiency in briefing technical presentations to a government customer
• Experience leading complex diagnostics and implementation to quickly address issues and minimize impact to technical programs
• Experience with reverse engineering and troubleshooting of complex network architectures
• Ability to write and review software code (Java, Python, etc.)
• Current US Citizenship and active DoD Secret clearance or higher
• Must be able to support an in-person, closed-area work environment 100% of the time

Preferred Qualifications:

• Extensive experience with Kubernetes, Docker, and/or other cloud orchestration technologies.
• Comprehensive experience with Helm Charts and Ansible Technologies
• Comprehensive experience with configuration management tools, i.e., Git, GitHub, GitLab, Bitbucket, others.
• Extensive experience with branching strategies, gated commits and source-controlled management
• Comprehensive experience in programming and scripting experience in a UNIX environment (C++, Perl, Python, Bash, Ruby, Shell, Scripts).
• Extensive programming and scripting experience in a Windows environment (PowerShell, etc.)
• Comprehensive experience with PaaS (Platform as a Service) infrastructure
• Comprehensive experience with software development (i.e., Java/JavaScript, C++, C#, or any modern object-oriented language) and its life cycles

Benefits:

• Highlights of our benefits include Health/Dental/Vision, 401(k) match, Profit-Sharing, Flexible Time Off, STD/LTD/Life Insurance, Referral Bonuses, professional development reimbursement, vacation, sick leave, and maternity/paternity leave.

Apply online or visit us at www.tcs-inc.com/careers

TCS, Inc. is an EEO Employer.