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.
Why Join Us
We are seeking a Detection and Response Engineer to join our Defensive Services team, supporting SIEM monitoring and alerting, threat hunting, and purple team activities that help our clients meet both federal compliance and commercial security requirements. If you're passionate about defending organizations against evolving threats, driven to innovate, and thrive in a collaborative, high-performing environment, we'd love to have you on our team. Join us in our mission to make the world a safer place through proactive cybersecurity and operational excellence.
What You'll Do
- Collect, analyze, and operationalize threat intelligence to inform proactive detection and threat‑hunting activities, driving measurable security posture improvements across client environments.
- Develop, optimize, and maintain custom detection and threat‑hunting queries across two or more SIEM platforms, tuning alerts for improved fidelity and building dashboards and saved searches that support repeatable, operational use cases.
- Plan and lead cyclical, hypothesis‑driven threat hunts using threat intelligence and behavior‑based analytics; identify detection gaps and telemetry blind spots, and translate hunt outcomes into detection improvements, alert tuning, and updated runbooks.
What You'll Bring
Bonus Points
- Professional services background: Prior experience supporting external clients from within a consulting or professional services organization.
- Automation capabilities: Experience automating workflows in GitLab or GitHub with Terraform and Ansible.
- Compliance frameworks: Understanding of FedRAMP, FISMA, HIPAA, HITRUST, PCI, and similar regulatory standards.
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. And you’ll enjoy competitive perks and benefits to support you and your family, like paid parental leave, flexible time off, certification and training reimbursement, digital mental health and wellbeing support membership, and comprehensive insurance options.
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].