Devops Engineer with Security Clearance

Apex Systems is hiring for a DevOps Engineer to support our government client here in Wisconsin. The position is 100% remote but candidate must be local to WI- if interested, please apply directly or submit resume to Cameron at Title: DevOps Engineer Location: 100% remote (must reside in Wisconsin) Contract Position Job Description: We are seeking a skilled DevOps/Platform Engineer to manage, maintain, and optimize our on-premise commercial software applications built on PostgreSQL, Express.js, React, and Node.js. The ideal candidate will be responsible for deploying, monitoring, securing, and scaling the PERN stack infrastructure within a Linux-based virtualized environment. This role requires expertise in database administration, Linux system management, scripting/automation, and security best practices. This role also includes app administration, installation, deployments, configurations, versioning, app patching, performance monitoring and optimizations. Key Responsibilities: Platform Administration & Maintenance

• Manage and optimize PostgreSQL databases, including backups, replication, indexing, and query performance tuning.

• Deploy, configure, and maintain Express.js, React, and Node.js applications on Linux virtual machines. This includes NGINX and PM2 platforms.

• Oversee on-premises system infrastructure, ensuring high availability and performance.

• Implement and maintain CI/CD pipelines for automated deployments.

• Troubleshoot and resolve system, application, and network issues.
Security & Operations

• Review system hardening, data encryption, and access control policies align with security best practices.

• Work with other teams to monitor vulnerabilities and apply security patches and updates.

• Assist in defining firewall rules, intrusion detection, and role-based access control (RBAC).

• Review compliance with data governance and regulatory requirements.
• Ensure proper backup, disaster recovery, and redundant configurations. Support & Documentation
• Provide technical support for platform-related issues and troubleshooting.

• Maintain clear documentation for deployments, configurations, and troubleshooting guides.

• Train and support developers and IT staff on best practices and operational procedures. Required Skills & Qualifications:
• Strong expertise in PostgreSQL administration, including replication, backup strategies, and performance tuning.

• Experience deploying PERN stack applications in a cloud or on-premises environment.

• Knowledge of CI/CD tools like GitHub actions, Azure Devops pipelines, or Ansible for automation.

• Scripting and automation experience with Bash, Python or similar scripting. Preferred Qualifications:
• Prior experience in IT infrastructure, DevSecOps, or SRE roles.

• Proficiency in Linux app and database server administration, with experience such as Ubuntu or RHEL.

• Understanding of network security, firewalls, VPNs, and SSH hardening.

• Knowledge of OpenID Connect (OIDC) or Ldap as well as IAM tools such as Entra ID, Okta, Active Directory, or centralized authentication mechanisms.

• Familiarity with virtualization platforms (VMware or Hyper-V).