DevOps Engineer III

Platform Engineer Candidates MUST be WI residents or willing to relocate to WI at their own expense prior to starting. This position can work 100% remotely (within the state of WI). We are seeking a skilled 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: 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). Samprasoft