About Coalfire

Coalfire is on a mission to make the world a safer place by solving our clients’ hardest cybersecurity challenges. We work at the cutting edge of technology to advise, assess, automate, and ultimately help companies navigate the ever-changing cybersecurity landscape. We are headquartered in Chicago, Illinois with offices across the U.S. and U.K., and we support clients around the world.

But that’s not who we are – that’s just what we do.

We are thought leaders, consultants, and cybersecurity experts, but above all else, we are a team of passionate problem-solvers who are hungry to learn, grow, and make a difference.

Position Summary

Are you interested in a dynamic summer internship experience with a cybersecurity company?

Coalfire is looking for Summer 2026 interns to support our team. Depending on your preference and location in proximity to one of our offices, this role can be a remote, hybrid, or in office position.

Our intern program is 10-weeks in length, going from end of May to August. It is a PAID internship program!

We are targeting students graduating between December 2026 and June 2027.

We are looking for passionate professionals with the academic and practical experience, along with the drive, acumen, and aptitude, to support our Division Hex – Pen Testing team.

Learn more about Division Hex at https://coalfire.com/services/security.

What We Offer:

Professional Development: Mentorship from experienced professionals and opportunities for skill-building and career growth.

Hands-On Experience: Practical experience working on real projects and gaining insights into industry practices.

Networking: Opportunities to connect with industry professionals and fellow interns.

What You’ll Do

Assist in conducting security assessments on a wide variety of technologies and implementations.
Gain exposure to working with clients on technical security or compliance activities.
Learn from experienced professionals how to conduct penetration testing, code reviews, social engineering, red team engagements, and physical security assessments.
Contribute to the Coalfire Division Hex Penetration Testing Team overall success by helping the team meet business objectives.
Gain a comprehensive understanding of cybersecurity while helping the team with research, security documentation, and process improvement.

Why You’ll Want to Join Us

At Coalfire, you’ll find the support you need to thrive personally and professionally. In many cases, we provide a flexible work model that empowers you to choose when and where you’ll work most effectively – whether you’re at home or an office.

Regardless of location, you’ll experience a company that prioritizes connection and wellbeing and be part of a team where people care about each other and our communities. You’ll have opportunities to join employee resource groups, participate in in-person and virtual events, and more.

At Coalfire, equal opportunity and pay equity is integral to the way we do business. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. Coalfire is committed to providing access, equal opportunity, and reasonable accommodation for individuals with disabilities in employment, its services, programs, and activities. To request reasonable accommodation to participate in the job application or interview process, contact our Human Resources team at [email protected].

Penetration Testing Intern

Division Hex

Coalfire

What You’ll Do