Application Engineer IV

Annapolis Junction, MD

Reflexive Concepts is seeking a skilled Application Engineer IV to join our team!

Qualifications:

Eight (8) years of experience supporting projects and programs similar in scope and complexity
Bachelors Degree in Computer Science or a related field

Description:

Work across multiple hosting platforms supporting Linux VMs. This position allows you to learn about the product as well as dive deep into area of VM Management/DevOps.

Duties and Responsibilities:

Server Certificate life cycle, monitoring VM health status, update software on VMs (manually and through YUM repos), making sure VMs satisfy latest security requirements
Monitoring and managing production Linux VMs - stand-alone VMs and those integrated in a Kubernetes cluster across multiple hosting platforms
Maintain Ansible playbooks to push out changes to VMs and monitor the Kubernetes clusters through Rancher or Kubernetes commands to ensure the clusters nodes and pods are healthy and running smooth. Administer, secure, and maintain Linux virtual machines (RHEL 8/9) across multiple cloud platforms (OpenStack, VMware, AWS)
Troubleshoot production Linux VMs and Kubernetes clusters, ensuring node and pod health through Rancher or Kubernetes
Support Apache NiFi deployments performing configuration updates, monitoring dataflows, and resolving connectivity or resource-related issues
Manage the full certificate lifecycle (server and PKI), ensuring systems meet current security and compliance standards (STIG/SSP)
Perform software updates, patching, and system hardening through YUM and enterprise repositories
Work directly with development teams and end users to deliver operational support ranging from basic configuration changes to complex cluster builds
Analyze logs, troubleshoot performance issues, and identify root causes of VM, container, or application-level problems

Required:

Troubleshooting experience (VM & application logs & tracking down sources/causes of VM or application issues)
Strong Linux skills (RHEL 8/9)
Experience with Kubernetes, Docker, and Rancher for containerized workloads
Familiarity with Apache NiFi or similar data integration tools
Working knowledge of Ansible for automation and configuration management
Hands-on experience managing VMs in OpenStack, VMware, or AWS
Ability to troubleshoot SSH, performance, and network-related issues in Linux environments
Experience applying security hardening (STIG, STE/STN) and maintaining compliance documentation (SSP)
Experience with network flow monitoring tools
Active Security + Certification

Desired: