reflexiveconcepts.catsone.com

System Administrator II

Ansible Bash CentOS Confluence Fiber +14 skills

System Administrator (Level 2) providing end-to-end support for a multi-vendor high-performance storage environment across dispersed sites: Linux administration, hardware troubleshooting, capacity planning, and day-to-day monitoring. Core stack is RHEL-family Linux, Lustre/HPC storage fabrics, with TS/SCI full-scope poly and DoD 8570 IAT II required.

System Administrator II

Ansible Bash CentOS Confluence Git +13 skills

Reflexive Concepts is hiring a Level 2 System Administrator in Annapolis Junction, MD, to monitor, troubleshoot, and maintain Linux-based high-performance computing systems supporting a national security mission. Requires 5 years of sysadmin experience, RHEL-family Linux and Bash skills, DoD 8570 IAT Level II certification, and an active TS/SCI clearance with full-scope polygraph.

System Administrator III

Ansible Bash CentOS Confluence Git +13 skills

Monitors, troubleshoots, and maintains Linux-based high-performance computing systems supporting a national security mission. Day-to-day work spans OS installs, file systems, TCP/IP networking, BASH scripting, and on-call support on RHEL/CentOS/Rocky/SLES/Ubuntu, with an active TS/SCI clearance and full-scope polygraph required.

System Administrator III

Ansible Bash CentOS Confluence Fiber +14 skills

Level 3 System Administrator providing end-to-end support for a multi-vendor, high-performance storage environment across dispersed sites: Linux administration (RHEL-family), fiber channel fabrics, Lustre/HPC storage troubleshooting, capacity planning, and monitoring. Requires TS/SCI with full-scope poly, DoD 8570 IAT II cert, and on-call availability.

Cloud Systems Administrator II

Ansible Cloud Docker Helm Kubernetes +3 skills

Cloud Systems Administrator II supporting a team that vets and onboards Defense Industrial Base (DIB) companies for the CCC Partnerships Team. Day-to-day work centers on Linux administration (SSH, RPM/YUM) and cloud/DevOps tooling: Docker, Kubernetes, Traefik, Helm, Ansible, CloudFormation, and Terraform, plus eVo, CoDE, and WandS.

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DevOps Engineer III

Ansible Argo CD Athena AWS CI/CD +21 skills

DevOps Engineer III working on-site in a SCIF at Annapolis Junction, MD supporting government/intel programs: builds infrastructure as code with Python, Ansible, and Terraform; runs Kubernetes, Docker, and NiFi workloads; manages GitLab/Argo CD CI/CD and AWS. Requires an active TS/SCI with CI polygraph and on-call support.

Database Engineer III

Bash Cloud Linux MongoDB Oracle +1 skills

Designs, develops, and administers relational databases for a cleared government program, working from requirements through system acceptance testing. Core stack is Oracle (Database, Enterprise Manager, Data Guard) on Linux with Bash scripting; MongoDB is a plus.

System Administrator

Ansible Automation AWS Bash CI/CD +16 skills

System administrator on a cleared government program: day-to-day operations, monitoring, and Tier 1/2 support for enterprise Windows and Linux infrastructure, plus modernization work spanning on-prem, hybrid, and AWS cloud using Terraform, Ansible, Docker, and CI/CD tooling. Requires active TS/SCI with Full Scope Polygraph.

DevOps Engineer

Ansible AWS CI/CD DevOps Docker +10 skills

DevOps Engineer at Reflexive Concepts in Annapolis Junction, MD, deploying and troubleshooting distributed web applications: installing/configuring complex software, managing network servers, and monitoring performance. Core stack is Linux, AWS, Docker/Swarm, Terraform, Ansible, and GitLab CI/CD, with a rotating on-call pager week every 4-6 weeks.

System Administrator III

Ansible Atlassian Automation Bash Big Data +16 skills

System Administrator III at Reflexive Concepts to sustain a large-scale Linux cluster supporting a critical (cleared) government mission at Fort Meade: installing COTS/GOTS/FOSS software, day-to-day operations, monitoring, security compliance, and automation with Ansible/SaltStack. Requires an active TS/SCI with FS polygraph and Security+.

DevOps Engineer

Agile Ansible Atlassian Automation AWS +12 skills

Reflexive Concepts is hiring a DevOps Engineer in Laurel, MD to support cloud migration and operations on a cleared (TS/SCI + Full Scope Polygraph) program. Day-to-day work spans AWS cloud transitions, automation with Ansible and Terraform, CI/CD with Jenkins and GitLab, patching, and containerized deployments.

NewBe an early applicant North AmericaSenior

Senior Systems Administrator

Active Directory Ccna Linux Nessus Networking +3 skills

Reflexive Concepts is hiring a Senior Systems Administrator in Linthicum, MD to support secure enclave development networks. Day-to-day work spans Windows Server/Active Directory, VMware virtualization, networking, NetApp storage, and security compliance (RMF, ACAS); an active TS/SCI clearance with full-scope polygraph is required.

DevOps Kubernetes Support

Ansible API Automation CI/CD Confluence +25 skills

DevOps engineer supporting Reflexive Concepts' Zero Trust ICAM program for DoD customers: maintaining CI/CD pipelines, deploying and troubleshooting containerized workloads in Kubernetes and Linux environments, and keeping deployment configs, monitoring, and release documentation in order under senior engineers' guidance.

Database Engineer II

Ansible Automation AWS Azure Bash +20 skills

Database Engineer II supporting the DEFSMAC team on-site in Annapolis Junction, MD: designing and tuning PostgreSQL/PostGIS schemas and queries, maintaining HA and replication, monitoring performance, and automating tasks with Bash/Python. Requires an in-scope polygraph (within 7 years) and five years of DBE experience.

System Administrator II

Ansible CI/CD Cloud DevOps Firewall +2 skills

System Administrator supporting the DEFSMAC team in Annapolis Junction, MD: managing and monitoring Linux servers, networks, and cloud environments, building CI/CD pipelines, and automating with tools like Ansible and Terraform. Requires 10 years of SA experience (degree substitutable) and an in-scope polygraph within 7 years.

System Administrator I

Ansible Bash CentOS Confluence Git +13 skills

Level 1 System Administrator monitoring, troubleshooting, and sustaining Linux-based systems for a national security mission (Y4 Desktop Services) at Fort Meade, MD. Core work is RHEL-family Linux admin, BASH scripting, and TCP/IP networking; requires DoD 8570 IAT II certification and an active TS/SCI with full-scope polygraph.

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System Administrator III

Colombia

System Administrator III supporting a government agency's IT environment from a contractor site in Colorado. Day-to-day work spans Tier 1/2 help desk, monitoring and troubleshooting of client/server/storage/network and mobile devices, and administration of UNIX and Windows systems plus Cisco routers and switches.

Cisco Help Desk SOA Unix

NewBe an early applicant North AmericaLead

DevOps Engineer III

ActiveMQ Agile Ansible Automation AWS +32 skills

DevOps Engineer III on-site in Columbia, MD: builds release pipelines, automates deployments, and serves as technical lead on an Agile team managing Linux/AWS platform infrastructure. Core stack includes Git, Jenkins/Bamboo, Docker, Kubernetes, Puppet/Ansible, MySQL, and Elasticsearch.

System Administrator I