Intern, Infrastructure Cybersecurity - Summer 2027

Mansfield Energy Corp; Gainesville (GA); On-site; USD 24,000 - 34,000; Full time

Job summary

Mansfield Energy Corp invites applications for a Summer Intern in Infrastructure Cybersecurity at our corporate headquarters in Gainesville, GA. This onsite internship runs May 24, 2027 to August 6, 2027, with a pay rate of $21/hour and a full-time schedule.

You will collaborate with network, systems, and security engineers on vulnerability management, monitoring, incident response, hardening, IAM, and compliance. Gain hands-on experience across enterprise security in a real environment.

Qualifications

• Pursuing a degree in Cybersecurity, CS, IT or related field.
• Understanding of networking fundamentals (TCP/IP, DNS, DHCP, routing, VLANs).
• Familiarity with Windows and Linux operating systems.
• Understanding of core security concepts (least privilege, defense in depth, authentication and encryption).
• Strong analytical, problem-solving and written communication skills; able to handle confidential information.

Responsibilities

• Vulnerability management: assist with scanning, triage and remediation tracking with owners.
• Security monitoring and incident response: review alerts and assist investigations.
• Network and infrastructure hardening: firewall reviews, segmentation validation, secure configurations for servers, devices and cloud resources.
• Identity and access management: assist with user access reviews and MFA coverage reporting.
• Compliance and documentation: gather evidence and create/update procedures, runbooks and diagrams.
• Collaboration: work with infrastructure, cloud and application teams to define goals and deliverables.

Skills

Networking basics

Windows & Linux

Security concepts

Analytical skills

Discretion

Education

Cybersecurity/CS/IT degree

Job description

As a Summer Intern in Infrastructure Cybersecurity, you will collaborate with a team of network, systems, and security engineers to protect and strengthen the company’s technology environment. This is a hands‑on role where you’ll contribute to real‑world projects, gaining experience in network security, vulnerability management, identity and access management, and security compliance.

Internship Details

• General: Full-time, Monday – Friday, onsite paid internship
• Pay: $21/hour
• Dates: May 24, 2027, through August 6, 2027 (Required)
• Location: Corporate headquarters, Gainesville, GA (Onsite Required)

Key Responsibilities

• Vulnerability Management:
• Assist with vulnerability scanning, triage and prioritize findings, and track remediation with system owners.
• Security Monitoring & Incident Response:
• Review alerts from endpoint, identity, and network security tools, and support the investigation and documentation of security events under supervision.
• Network & Infrastructure Hardening:
• Support firewall rule reviews, network segmentation validation, and secure configuration baselines for servers, network devices, and cloud resources.
• Identity & Access Management:
• Assist with user access reviews, multi‑factor authentication coverage reporting, and cleanup of stale or over‑privileged accounts.
• Compliance & Documentation:
• Help gather evidence for internal security assessments, and create or update procedures, runbooks, and network diagrams.
• Collaboration:
• Work closely with infrastructure, cloud, and application teams to define project goals and deliverables and promote secure practices.

Skills & Qualifications

• Currently pursuing a degree in Cybersecurity, Computer Science, Information Technology, or related field.
• Understanding of networking fundamentals (TCP/IP, DNS, DHCP, routing, VLANs).
• Familiarity with Windows and Linux operating systems.
• Understanding of core security concepts (least privilege, defense in depth, authentication and encryption).
• Strong analytical, problem‑solving, and written communication skills.
• Ability to handle confidential information with discretion.

Preferred

• Progress toward an industry certification (CompTIA Security+, Network+, or Cisco CCNA).
• Exposure to cloud platforms (Azure) and Microsoft 365 security.
• Scripting experience (PowerShell or Python).
• Hands‑on lab, homelab, or capture‑the‑flag (CTF) experience is a plus.

What We Offer

• Mentorship from seasoned Infrastructure and Cybersecurity professionals.
• Hands‑on experience securing a real enterprise environment.
• Opportunity to work on impactful, high‑visibility projects.
• A supportive and innovative work culture.
• Potential for future opportunities.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status.