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IDR is seeking a Senior F5 Engineer to join one of our top clients for an opportunity in Englewood, CO. In this role, you will help ensure application delivery, traffic management, and web application security remain resilient, high-performing, and secure across a distributed, cloud-integrated enterprise environment. You’ll modernize and optimize an F5 BIG-IP ecosystem while partnering with engineering stakeholders to improve scalability, automation, and operational reliability.
Position Overview for the Senior F5 Engineer:
- Own hands-on administration, optimization, and operational support of an enterprise F5 BIG-IP environment
- Enhance availability, performance, and security for mission-critical applications through load balancing, SSL/TLS, and WAF best practices
- Develop and maintain F5 iRules and tune WAF/ASM policies to meet evolving application needs
- Support modernization efforts that integrate SaaS and cloud-based security/application delivery capabilities
- Mentor junior engineers and contribute to standards-based engineering practices and continuous improvement
Requirements for the Senior F5 Engineer:
- Bachelor’s degree in Computer Science, Computer Engineering, or a related technical field
- 5+ years supporting medium to large enterprise network/infrastructure environments with deep, hands-on F5 BIG-IP experience (LTM, DNS/GTM, WAF/ASM, SSL offload, DR/BC)
- Experience developing F5 iRules (Tcl) and performing WAF/ASM policy tuning and optimization
- Familiarity with F5 Distributed Cloud and SaaS-based WAF/security services in modern enterprise environments
- Experience with infrastructure automation tools (Python and/or Ansible and/or Git) plus strong networking fundamentals (TCP/IP, HTTP/HTTPS, SSL/TLS, DNS)
What’s in it for you?
- Competitive compensation package
- Full Benefits; Medical, Vision, Dental, and more!
- Opportunity to get in with an industry leading organization.
Why IDR?
- 25+ Years of Proven Industry Experience in 4 major markets
- Employee Stock Ownership Program
- Dedicated Engagement Manager who is committed to you and your success.
- Medical, Dental, Vision, and Life Insurance
- ClearlyRated’s Best of Staffing® Client and Talent Award winner 12 years in a row.
- pay transparency: 79.47/hr W2
- #LI-Onsite
IDR is an equal opportunity employer. We provide reasonable accommodations for disabled employees and do not discriminate based on race, color, religion, sex, sexual orientation, gender identity or expression, national origin, age, disability, veteran status, marital status, criminal history, or any other protected category under applicable federal, state, or local laws. We consider all qualified applicants, including those with criminal histories, in compliance with applicable Fair Chance laws.
To comply with civil rights laws, we invite applicants to voluntarily self-identify their race, ethnicity, gender, and veteran status. This information is confidential, optional, and will not affect your application. You may access this form here.
Pursuant to pay transparency laws, salary ranges and benefits will be disclosed where required by law. Compensation is based on factors such as experience, skills, and qualifications.
If you require a reasonable accommodation during the application or interview process, please contact Human Resources at hr@idr-inc.com

