Lead Infrastructure Engineer: Networking & Security

Mainstay Maritime; Duluth (MN); On-site; USD 120,000 - 180,000; Full time

Job summary

Mainstay Maritime is seeking a senior IT Infrastructure Engineer to design, implement, and optimize the core IT backbone for vessels and offices. You will troubleshoot complex issues, enforce security controls, and guide scalable, reliable infrastructure across locations.

The role requires strong automation skills (Terraform/Ansible/Python), advanced networking expertise, and travel to support onboard systems and onshore offices. A background in security and vulnerability management is essential.

Qualifications

• Bachelor’s degree in computer science or a related field.
• 7+ years of experience in multiple core infrastructure technologies.
• Recognized Networking Certification (e.g., CCNA, Fortinet NSE, Palo Alto NSE), or
• A combination of education and experience equivalent to the above

Responsibilities

• Build, configure, and deploy complex network and infrastructure solutions that support vital business operations.
• Administer, maintain, and support core infrastructure to ensure reliability, scalability, and security. Implement network security policies and controls that monitor for threats, perform other security-related tasks that enhance data security.
• Maintain policy and process for infrastructure vulnerability management, penetration testing, and compliance.
• Leverage automated workflows for infrastructure provisioning, deployment, and centralized management to promote efficiency, scalability, and cybersecurity.
• Investigate and resolve complex technical issues to minimize operational downtime and protect against data loss.
• Collaborate with business systems team to ensure vessel and office access to critical business applications and to maintain related onboard workstations.

Skills

Advanced networking

Enterprise storage

Virtualization

Security best practices

Analytical thinking

Education

Bachelor’s degree in computer science or related field

Tools

Terraform

Ansible

Python

Job description

Mainstay Maritime is seeking a senior IT Infrastructure Engineer to design, implement, and optimize the core IT backbone for vessels and offices. You will troubleshoot complex issues, enforce security controls, and guide scalable, reliable infrastructure across locations.

The role requires strong automation skills (Terraform/Ansible/Python), advanced networking expertise, and travel to support onboard systems and onshore offices. A background in security and vulnerability management is essential.