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1787 - Application Systems Integration Engineer III

Sigma Defense Open
On-site San Diego Full-time Mid-level Software Engineering

At a glance

Mid-level Software Engineering role at Sigma Defense. San Diego · full-time · $120,000–$150,000 base.

SalaryStated by Sigma Defense
$120,000 – $150,000
Base salary for this role, in USD per year, as published in the posting.
This role, from Sigma DefenseOur estimate for the market: $126,838–$173,750Median $148,375
The range includes the market median of $148,375 for mid-level software engineering roles in San Diego.
Worked out from 23 postings that stated pay, median $148,375. Last updated Nov 7, 2026.
RoleSoftware Engineering
SeniorityMid-level
LocationSan Diego
WorkplaceOn-site
EmploymentFull-time
Base pay$120,000–$150,000
PostedOct 29, 2026
Role brief

techroles summary, based on the employer's posting.

What you'll do

  • Turn application integration needs into detailed solutions, then document the Network POR design and HACSIM updates
  • Connect network systems engineers, testers and application providers so integration work stays coordinated
  • Help test applications and systems in the lab, resolving issues that arise during integration
  • Review technical materials and update specifications, change records and fleet readiness documentation
  • Maintain tactical-network mockups and automate repeatable integration work with PowerShell and Ansible

What you bring

  • Five to ten years of relevant experience, including work with tactical data feeds and multicast video
  • Hands-on background with Terraform or another IaaS or infrastructure-as-code approach
  • A bachelor's degree, Security+ CE or CISSP, and at least one listed platform certification
  • U.S. citizenship and an active Secret clearance, or the ability to obtain one

Who this fits

This is an onsite role in San Diego focused on hands-on integration engineering, testing and automation. You should be comfortable supporting CI/CD work for HACSIM and maintaining integration processes. A Secret clearance or higher is required, though sponsorship may be available for the right candidate.

From the employer

Sigma Defense is seeking an Application Systems Integration Engineer III to join our team in San Diego, CA. The Integration Engineer (IE) is responsible for providing detailed integration solution analysis during the ASI Process.

Equal Opportunity Employer/Veterans/Disabled: Sigma Defense Systems is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

Requirements

  • 5 - 10 years of relevant experience.
  • Experience with Terraform or other Infrastructure as a Service or Infrastructure as Code (IaaS/IaC).
  • Experience with integration with tactical data feeds.
  • Experience with Multicast video.
  • Must be a U.S. citizen.

Mandatory Certifications:

  • Security+ CE or CISSP
  • At minimum one of the following operating system/platform certifications:
    • Linux
    • Windows
    • VMware
    • Cisco

Computer Programs/Software:

  • OpenShift
  • Cisco
  • VMWare
  • Windows
  • Linux
  • Ansible
  • PowerShell
  • Python

Personnel Clearance Level:

  • Candidate must possess or have the ability to obtain an active Secret security clearance or higher.
  • Clearance may be sponsored for the right candidate.

Education Requirements:

  • Bachelor's degree from an accredited college or university.

Essential Job Duties (not all-inclusive):

  • Candidate will identify areas for improvement, innovation, simplification and subsequently take the lead on executing on those plans.
  • Elaboration of integration requirements initially gathered by the Application Engineer.
  • Act as liaison between Network POR Systems Engineering/tester and application provider.
  • Develop integration solutions and prepare Network POR design documentation, such as the HACSIM (CANES) to include all updates and development of the HACSIM pre and post test as well as fleet HACSIM updates.
  • Support application/system testing in lab and mitigate any integration issues.
  • Participate in technical reviews and assist in development/revision of specifications, Specification Change Notices (SCN), Ship Change Documents (SCD), Request for Changes (RFC), Engineering Change Notices (ECN), Fleet Readiness Certification Boards (FRCB), Field Changes (FCs).
  • Maintain and validate engineering mockups of tactical network systems.
  • Responsible for documenting repeatable processes and procedures for these integrations.
  • Integration points: Active Directory and OpenAM, MS Exchange, VMWare, AWS, OpenShift, MS Systems Center solutions, System Incident and Events Management, IIS, JBOSS, Cisco Integrated Services Engine, and Group Policy Management.
  • Responsible for automating these processes using PowerShell and Ansible along with Git/BitBucket for script and configuration data management.
  • Work will comprise the Continuous Integration/Continuous Delivery (CI/CD) of the CANES Hosted and Connected Systems Integration Manual (HACSIM). The HACSIM ASI Automation Tool is a complex product.

Salary Range: $120,000 - $150,000 annually.

Benefits

  • Dental and Vision Insurance
  • Medical Insurance to Include HSA, FSA, and DFSA Plans
  • Life and AD&D coverage
  • Employee Assistance Program (EAP)
  • 401(k) Plan with Company Matching Contributions
  • 160 Hours of Paid Time Off (PTO)
  • 12 (Floating) Holidays
  • Educational Assistance
  • Highly Competitive Salary
Opportunity

Software Engineering work from LinkedIn, X, Reddit and Upwork, in one list.

Each morning you get everything that fits, strongest first.

Software Engineering$120k+

Find me work

By the team behind techroles.

Find me work
Opportunity

Software Engineering work from LinkedIn, X, Reddit and Upwork, in one list.

Each morning you get everything that fits, strongest first.

Find me work

By the team behind techroles.