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Job Details

Principal Infrastructure Engineer


Applications Engineer


Reston, Virginia, United States


This role provides IT infrastructure engineering, administration, and operations. This role maintains enterprise server infrastructure to ensure proper configuration, availability, performance, capacity, and maintenance (including application of the latest patches and upgrades). This role monitors technology obsolescence, manages upgrades, and evaluates alternatives across on-premises and cloud IT infrastructures, both virtual and physical. This role monitors operations and collects and evaluates metrics to manage IT infrastructure services and for inclusion into project KPIs and Service Level Agreements (SLA). This individual performs risk assessment, risk mitigation analysis, vendor trade studies, and appropriate documentation to ensure IT infrastructure services are available according to established Service Level Agreements (SLA). This role ensures continuity of operations including disaster recovery.

Primary Responsibilities:

  • This role is responsible for installation, configuration, administration, support, and maintenance of systems, including associated hardware and cloud resources.

  • Duties include updating to new technologies, tuning performance, defining storage needs, and prioritizing the implementation of critical system patches.

  • This infrastructure includes on-premises and cloud resources.

Basic Qualifications:

  • Experience applying expertise on multiple complex work assignments.

  • Experience supporting a broad range of assignments requiring originality and innovation in determining how to accomplish tasks.

  • Experience developing methodologies and presenting solutions to problems.

  • Experience contributing to deliverables and meeting performance metrics.

Candidate must have a Bachelor’s degree with 12+ years of prior relevant experience or Master’s with 10+ years of prior relevant experience. Will consider work experience in lieu of a degree.

Candidate must have an active TS/SCI with a polygraph

Original Posting Date:


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 $108,550.00 - $196,225.00

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.