Senior Software Engineer

Posting Date: 09/17/2026 Security Clearance Required: TS/SCI w/ Poly

Remote Type: OnsiteTime Type: Full time

Contact Email: careers@mantech.comApply: https://careers.mantech.com/en_US/careers/JobDetail/Senior-Software-Engineer/66124Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we've been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH!MANTECH seeks a motivated, career and customer-oriented Senior Software Engineer to join our team in San Antonio, TX.The Linux Orchestration Services (LOS) team which is the standard of excellence for all things Linux within the organization. The selected candidate will play a critical role in overseeing the design, implementation, and maintenance of the organization's cloud-compute infrastructure. The ideal candidate will have a strong background in the Linux Operating System and automation technologies. Responsibilities include, but are not limited to: Develop prototypes, models, or conceptual designs to innovate solutions for mission requirements. Evaluate new and existing technologies to solve operational problems effectively. Identify capability gaps and innovate mitigations to address these gaps. Evaluate, develop, or test computer code and tools to achieve performance objectives. Apply computer security principles to ensure robust mitigation of various attack vectors. Utilize general knowledge of data models and protocols to conduct agile DevOps via Continuous Integration/Continuous Development (CI/CD) principles.

Minimum Qualifications: Bachelor's degree with 12 years OR associate's degree with 15 years OR 20 years (no degree requirement) of relevant Software Engineering experience Proficient in Linux systems & Strong skills in languages such as Python, JSON, Yaml, Bash, etc. Experience with cloud computing platforms (e.g., AWS/Lambda, Azure, Google Cloud Provider) or Hyper-Converged Infrastructure (HCI) technologies Expertise in automation tools (such as Ansible) and frameworks for streamlining processes and workflows Familiarity with containerization technologies such as Docker and container orchestration platforms like Kubernetes, ECS (Elastic Container Service), EKS (Elastic Kubernetes Service), etc. Proficient in version control systems like GIT and skilled in maintaining comprehensive documentation for developed capabilities Knowledge of applying DISA STIG standards Preferred Qualifications: Experience with Red Hat Satellite and Red Hat Image Builder Red Hat Certified Engineer (RHCE) Certificate Microsoft Azure products, VMWare (VSphere), OpenStackExperience/Knowledge of Virtual Desktop deployment and configuration automation (Terraform, Puppet, Chef, Salt, etc.)Experience with Infrastructure as Code (IaC) Expertise in managing and arranging JIRA projects, backlogs, sprints. Postgres, JavaScript, HTML, web/frontend

Clearance Requirements: Must have a current/active Top Secret/SCI with Polygraph

Physical Requirements: The person in this position must be able to remain in a stationary position 50% of the time. Occasionally move about inside the office to collaborate with other leaders/teams, use standard office automation equipment, and virtual communicationMANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation. If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.