Principal Software Engineer
Epsilon Systems Solutions· enterprise· Defense & Space· Oct 5, 2026 · 23d ago
San Diego, CA
In office
Principal
$166K–$250K
12+ years exp
Job description
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Back to Job Openings 2026-354 | Principal Software Engineer - ACS
START YOUR APPLICATION 2026-354 | Principal Software Engineer - ACS
Job ID: 2026-354
Date Posted: Sep 22, 2026
Department: Software Products
Location: San Diego, California
Salary Range: $166,000.00 to $250,000.00 per Year
This is a reasonable estimate for this role. Individual salaries are determined by a variety of factors including, but not limited to: business considerations, local market conditions, and internal equity, as well as candidate qualifications, such as skills, education, and experience.
Minimum Experience: 12 Year(s)
Minimum Education: Bachelor's Degree
Epsilon C5I (www.epsilonsystems.com/c5i), focused on software development and systems engineering for complex command, control, intelligence, and combat systems is seeking a Principal Software Engineer for work in San Diego, CA. Our engineering efforts provide the warfighter with common enterprise solutions to improve information sharing and combat effectiveness. If you have a passion for excellence in engineering and enjoy working on challenging projects in a fast-paced, team-oriented environment – read on!
Summary:
Our software teams employ an Agile Scrum process to rapidly design, code, and integrate capabilities into a mature Platform as a Service (PaaS) solution. Work includes developing and integrating applications that provision loosely coupled systems and capabilities which can be reused, discovered, and linked to build mission threads. DevSecOps and operations responsibilities also apply. The team uses Government Furnished DevSecOps tool suites (Atlassian products, such as JIRA, BitBucket, and Confluence.) This position is specifically for a position on the Agile Core Services (ACS) Development Team.
Duties and Responsibilities:
• Participate in a highly collaborative team within an AGILE software development and integration environment.
• Assist with trouble tickets with the ability to create, update, and close tickets, and track items to resolution (Confluence, JIRA).
• Integrate multi-functional applications into container-based support services.
• Write well designed, testable, and efficient code that meets technical requirements.
• Assist in the troubleshooting of code defects and deployment of timely fixes.
• Document code utilizing government identified configuration management tools.
• Deploying, installing, and troubleshooting software at the Fleet and Navy test facilities. Findings related to troubleshooting software code issues will be reported.
• Review and provide feedback on project technical documentation pertinent to Fleet.
• Design, implement, develop, and integrate software that powers infrastructure services to support data mediation, orchestration, and machine-to-machine messaging.
• Plans, designs, integrates, and tests software, network, and/or hardware products from initial specifications to final rollout and maintenance.
• Effectively mentor and knowledge share with more junior team members.
• Lead a subset of the engineering team by directing tasking and managing requirements.
• May be asked to support the ACS Operations Team, supporting installations and system maintenance ranging from locally to internationally at labs, naval shore sites, and onboard naval vessels.
• This position may require travel from San Diego to CONUS and OCONUS locations. The expected travel requirement is approximately 4 weeks per year (10%).
Required Qualifications:
• Bachelor’s Degree in Computer Science, Engineering, or a related technical discipline, or the equivalent combination of education, technical training, or work/military experience.
• Twelve or more (12+) years’ experience in a software engineering role.
• A minimum of DoD Information Assurance Technical (IAT) Level II Certification or eligibility is required for this position.
• At least four (4+) years of experience with technologies like Red Hat OpenShift Container Platform, Kubernetes, Docker, Helm and/or other container orchestration platforms.
• Experience with Virtual Machines (VMWare etc.), Amazon Web Services (AWS), Containers, Ansible, and Python.
• Experience with troubleshooting complex operating systems and networks in a RedHat Enterprise Linux (RHEL) environment.
• Experience demonstrating competencies including researching, analyzing, installing, and testing software updates, patches and hotfixes. Experience troubleshooting software code issues and reporting on findings.
• Good interpersonal skills and the ability to communicate with all levels of business users and management.
• Ability to work individually and on team projects in an environment of teamwork and cooperation.
• Excellent written, oral, and presentation skills.
• Effective team player with highly proficient customer service skills.
• Applicant must be able to obtain and maintain an active DoD Secret Security Clearance.
• Pursuant to the various government contractual requirements, all applicants must be U.S. Citizens.
Additional preferred qualifications:
• Active DoD Secret clearance or Top Secret clearance with SCI Eligibility.
• Certifications such as CompTIA Security+ or CompTIA Linux+
• Familiarity with DNS, LDAP, PKI, and other infrastructure services.
• Exposure to working with DISA, NIST, or STIG security guidelines and how to adhere to them.
Pay Range:
The salary range for this role is $166,000 - $250,000 annually. This is a reasonable estimate for this role. Individual salaries are determined by a variety of factors including, but not limited to: business considerations, local market conditions, and internal equity, as well as candidate qualifications, such as skills, education, and experience.
ADA Notations:
• Regular communication (hearing/speaking).
• Noise conditions range from very quiet to very noisy.
• Prolonged use of computer (typing/keyboarding).
• Frequently required to sit for long periods of time, stand, walk, and may occasionally lift and move at least 25 pounds.
• Ability to travel by car, air or other means of transportation, if required.
Epsilon Systems Solutions, Inc. is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics.
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