Senior System Administrator/ Developer (DISA)

Horizon Industries; Washington (District of Columbia); Hybrid; USD 120,000 - 180,000; Full time

Benefits offered by this job

Healthcare benefits

401k with employer match

Educational assistance

Job summary

Horizon Industries Limited seeks a Senior System Administrator/Developer for IDEAS, a DISA-based contract writing system. Remote USA. Responsibilities include managing RHEL, WebLogic, Appian, and security patches, with DoD PKI and IAVA compliance and STIG support.

Candidate must have 10+ years IT experience and 5+ years RHEL in production, plus strong DISA/ACAS expertise. Secret clearance required and constant collaboration with ISSO and DB teams.

Qualifications

• 10+ years of IT experience with 5+ years in production RHEL administration.
• 5+ years administering Oracle WebLogic Server.
• Experience patching, tuning, and securing Apache HTTP and Java applications.
• Hands-on DISA STIG implementation, ACAS remediation, and IAVA in a DoD RMF environment.
• DoD PKI and SSL/TLS certificate management.
• Bash scripting for automation, and Splunk or comparable log analysis tool.
• Experience working through formal change control in a government-hosted environment.
• Experience on at least two projects in a large organization administering, operating, maintaining, and securing a large-scale application.

Responsibilities

• Own execution of system administration for IDEAS as Key Personnel, directing System Administrator support and coordinating with the Database Administrator and ISSO
• Administer RHEL, Apache HTTP, Oracle Java, and Oracle WebLogic in the Environments, including system builds and decommissions, user accounts, security groups, and file permissions
• In Staging and Production, administer application-layer components (Appian, Oracle apps, WebLogic) and submit Enterprise Change Requests to the CAB and DISA groups
• Test and document security patches for RHEL, Apache, Appian, Java, WebLogic, Oracle Service Bus, Tomcat in lower environments and schedule production deployment
• Serve as the named alternate to the ISSO for STIG checks, ACAS and HBSS findings, IAVA remediation, and POA&M inputs
• Manage the DoD PKI certificate lifecycle, including signature requests, installation, expiration tracking, CRLs, and removal of expired certs
• Automate log inspection with shell scripts and Splunk, and produce risk/trend reports
• Keep server components within two releases of vendor baseline
• Produce and maintain System Administration docs, SOPs, diagrams, and troubleshooting guides
• Support the base-year effort to achieve and maintain Authority to Operate

Skills

RHEL admin

Oracle WebLogic

Apache tuning

Java apps

DISA STIG & IAVA

PKI management

Bash scripting

Splunk

Change control

Tools

Splunk

ACAS

HBSS

Appian

Oracle Service Bus

Job description

REMOTE

Senior System Administrator/Developer

Location: Remote, USA

Security Clearance: Must possess an active Secret Clearance.

Who we are:

Horizon Industries Limited (Horizon) is a dynamic IT and Management Consulting firm based in the Washington, DC area. Founded in 1996, Horizon Industries Limited (Horizon) has evolved into a company of highly qualified professionals that provides full-cycle IT Consultant and Management support in both the private and public sectors.

Horizon’s culture is based on our core values, and we PRIDE ourselves on a diverse, employee, and family-centric approach.

Who we are looking for:

IDEAS is the Defense Information Systems Agency’s Appian-based contract writing system, hosted in the Impact Level 5 Appian Government Cloud with a Data Integration layer in DISA’s Stratus cloud. The Senior System Administrator is a Key Personnel position that owns system administration for IDEAS, keeps the environments patched, secure, and compliant, and serves as the named alternate to the ISSO for STIG, ACAS, and IAVA execution.

Responsibilities

• Own execution of system administration for IDEAS as Key Personnel, directing System Administrator support and coordinating with the Database Administrator and ISSO
• Administer RHEL, Apache HTTP, Oracle Java, and Oracle WebLogic in the Performance, Staging, and Development environments, including system builds and decommissions, user accounts, security groups, and file permissions
• In Staging and Production, administer application-layer components (Appian, Oracle applications, WebLogic) and submit Enterprise Change Requests to the Change Advisory Board and DISA OS, database, and web administration groups
• Test and document security patches for RHEL, Apache, Appian, Java, WebLogic, Oracle Service Bus, Tomcat, and ANT in lower environments using automated scripts, and schedule production deployment through the hosting provider’s Application Service Interruption process
• Serve as the named alternate to the ISSO for STIG checklist reviews, ACAS and HBSS findings, IAVA remediation, and POA&M inputs
• Manage the DoD PKI certificate lifecycle, including certificate signing requests, installation, expiration tracking, Certificate Revocation List updates, and removal of expired or revoked certificates
• Automate log inspection with shell scripting and Splunk, and produce ranked "worst actor" risk and trend reports
• Keep server application components within two releases of the vendor baseline
• Produce and maintain System Administration documentation, SOPs, System Security Plan inputs, system diagrams, administration and troubleshooting guides, and lists of critical services
• Support the base-year effort to achieve and maintain Authority to Operate

Required Qualifications

• 10+ years of IT experience, including 5+ years administering Red Hat Enterprise Linux in production
• 5+ years administering Oracle WebLogic Server
• Experience patching, tuning, and securing Apache HTTP and Java applications
• Hands-on DISA STIG implementation, ACAS remediation, and IAVA compliance in a DoD Risk Management Framework environment
• DoD PKI and SSL/TLS certificate management
• Bash scripting for automation, and Splunk or a comparable log analysis tool
• Experience working through formal change control in a government-hosted environment
• Experience on at least two projects in a large organization administering, operating, maintaining, and securing a large-scale application

Preferred Qualifications

• Oracle Service Bus and Apache Tomcat administration
• Prior DISA experience, including the Stratus cloud or DISA hosting coordination
• Prior IDEAS support
• eMASS, HBSS/ENS, and IAVA workflow experience
• Familiarity with Appian Cloud administration
• RHCSA or RHCE certification

Why you will succeed at Horizon:

Horizon works at the forefront of new features and development practices and supports its employees in being trained and certified in the latest and greatest. As we continue to expand and grow the Horizon brand around the globe, we want to ensure that our team members are growing with us as you are a vital part of our success story. This is a great opportunity for us to invest in our employees by supporting you with the right skills and tools to be successful in your careers..

Why you will love working with us/ Perks:

• A comprehensive benefits package including healthcare (medical, dental, vision, and disability)
• a 401k program where you are 100% vested from day one with an employer match after 90 days.
• an Educational Assistance program.
• a Student Loan Repayment Program
• Paid Time off
• Dynamics, passionate, multi-disciplinary team of creative minds to work with, and many more.

EOE/Vet/Disabled

Horizon is an Equal Employment Opportunity employer, and it is our policy to consider all applicants for employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, or national origin.