Demo

Senior Network Firewall Administrator

Sentinel Technologies
Lakewood, CO Contractor
POSTED ON 3/15/2025
AVAILABLE BEFORE 9/10/2025

MOTIVATED…..make IT happen!

 

 

Sentinel Technologies, Inc. has been rated a top workplace every year since 2012!

 

About Us:      

Sentinel delivers solutions that can efficiently address a range of IT needs - from security, to communications, to systems & networks, to software applications, to cloud and managed services; all of which include our staffing solutions for our clients. Since 1982, Sentinel has grown from providing technology maintenance services to our current standing as one of the leading IT services and solutions provider in the US. We have aligned with many of today’s global technology leaders including Cisco, Dell, VMware and Microsoft. Sentinel services customers both nationally and internationally with primary support operating centers in Downers Grove (HQ), Chicago, and Springfield, IL; Phoenix, AZ.; Lansing, and Grand Rapids, MI; Milwaukee, WI; and Denver, CO.

 

If you are MOTIVATED… you can make IT happen at Sentinel. Our commitment to our employees is to create a work environment that encourages creativity, an entrepreneurial spirit, fosters growth through certification and hands-on training, and values a team-oriented culture with rewards based on impact!

 

If you share our passion about what technology can do and want to be part of a top workplace environment - we’d like to have you join our team.  Learn more at www.sentinel.com/careers.

 

As part of Sentinel's employment process, candidates will be required to complete a background check. Only those who meet the minimum requirements will be contacted. No phone calls please.

 

Sentinel is proud to be an equal opportunity employer including disability and veterans. In accordance with Title VII and state regulations, all qualified applicants will receive consideration for employment without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, marital status, pregnancy, genetics, disability, military, veteran status or any other basis protected by law.

 

If you are an individual with a disability and need assistance in applying for a position, please contact SentinelHR1@sentinel.com.

JFNDNP

 

 

As a Senior Network Firewall Administrator, you will be responsible for the evaluation, design, installation, configuration, operation, and maintenance of enterprise-level next-generation Firewall technologies such as Cisco ASA, Firepower and Identity Service Engine (ISE) technologies, Intrusion Prevention Systems (IPS), and Virtual Private Networks (VPN) in an enterprise 24x7 environment. You will have the opportunity to participate and lead technical research, documentation and projects with a primary focus on Data Center, Cloud, Campus, and Branch network security. You will also participate in after-hours projects as needed.

 

This is a contract opportunity requiring you to be onsite in Lakewood, CO 2 days a week.

 

 

  • Functional knowledge with layer 2 and layer 3 technologies with a focus on Cisco networking
  • Detailed experience with routing protocols including Enhanced Interior Gateway Routing Protocol (EIGRP), and Border Gateway Protocol (BGP)
  • Detailed experience with Data Center and Campus Core firewall design, traffic flow analysis, segmentation, and Implementation
  • Functional knowledge of Software Defined Networking concepts including Software Defined Data Center and Software Defined Wide Area Networks (SDWAN)
  • Able to recommend, implement and maintain security measures on various network devices
  • Working knowledge of virtual servers and operating systems
  • Working knowledge of encryption technologies, web services and database systems
  • Strong proficiency in scripting languages such as Python and YAML
  • Experience using automation tools such as Ansible and Terraform; familiarity with RESTful API integrations and version control systems
  • Detailed experience in the principles, design and implementation of TCP/IP networks including OSI model, routing, VLAN’s, QoS tuning and capacity management
  • Legally authorized to work in the US without sponsorship
  • Must demonstrate a “can-do” attitude
  • We focus on candidates that display our “ACE” factor - Attitude, Compassion, and Enthusiasm to deliver quality solutions with exceptional customer service.

We focus on candidates that display our “ACE” factor - Attitude, Compassion, and Enthusiasm to deliver quality solutions with exceptional customer service.

 

Compensation Range: 

$57-72/hr

 

What you get:

We offer weekly competitive pay, medical, dental, vision, 401K and more.

Salary : $57 - $72

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