Company Description OldRex Technologies is a mission-driven technology company founded by U.S. Coast Guard veterans and rooted in precision, readiness, and service. The team translates complex operational requirements into practical, high-impact digital solutions for government and commercial clients. This background provides a distinctive “always ready” mindset that shapes how projects are planned, executed, and supported. Applicants can expect a culture that values reliability, attention to detail, and clear communication. Professionals who thrive in structured, purpose-oriented environments will find meaningful work and growth opportunities here.
Location: Arlington, VA
Clearance: TS/SCI
Requirements
· 3-5 professional experience designing, implementing, administrating and maintaining enterprise GIS systems (PROD and DEV)
· Broad system administration experience on Windows and/or Linux
· Experience with at least one RDBMS, including SQL query writing (such as SQL Server, Oracle, PostgreSQL)
· Experience with Esri software including ArcGIS Enterprise and Portal for ArcGIS and their associates APIs or interfaces
· Working knowledge of at least one scripting or programming language (such as Python, PowerShell, Javascript, C#)
· Familiarity with network concepts and topics (such as domains, directories, DNS, HTTPS, firewalls, proxies, load-balancing)
· Familiarity with authentication concepts and topics (such as SAML, Web Tier, OIDC)
· Familiarity with cloud-based system operations (SysOps)
· TS/SCI US Security Clearance
· Bachelor's in Computer Science, Mathematics, Geographic Information Systems (GIS) or STEM related field
Recommended Qualifications
· Master's in Computer Science, Mathematics, Geographic Information Systems (GIS) or STEM related field
· One or more industry-standard IT certifications (such as Esri, CompTIA, Microsoft, Amazon)
· Experience with Esri software including ArcGIS Pro, ArcGIS Notebook Server, ArcGIS Monitor and their associates APIs or interfaces
ArcGIS Enterprise Administrator in Washington at OldRex Technologies
This position is listed as full time and onsite. It was posted last week.