Systems Engineer III

Job Summary:
Our client is seeking a Systems Engineer III to join their team! This position is located in Denver, Colorado.


We are seeking a Systems Engineer III to serve as a subject matter expert in DNS within our high-velocity lab environment. This role is responsible for the ownership, maintenance, and technical evolution of DNS infrastructure, ensuring the agility and stability required for complex research and development.



Duties:

• Own and manage lab DNS/DHCP/IPAM (DDI) services, including configuration, proactive monitoring, and high-tier troubleshooting
• Architect and implement automated DNS workflows using Terraform, Ansible, or Python to support ephemeral lab deployments and CI/CD pipelines
• Manage IP address space allocation (IPAM) across disparate lab segments to prevent overlaps and ensure accurate resource tracking
• Integrate DNS resolution across hybrid-cloud environments, ensuring seamless connectivity between on-premises hardware and public cloud instances
• Support network-level services such as PXE boot, DHCP Relay, and SRV record management for specialized lab equipment and application testing
• Configure and maintain DNS security features, including DNSSEC and Response Policy Zones (RPZ), to support security research and hardened test environments
• Perform deep-packet analysis using tools like Wireshark or tcpdump to resolve complex resolution issues within non-standard network topologies
• Lead DNS-related infrastructure projects, from initial capacity planning to the decommissioning of legacy lab systems
• Collaborate with cross-functional teams to provide customized DNS solutions for high-performance computing and low-latency application testing
• Drive the adoption of infrastructure-as-code (IaC) best practices to ensure repeatable and version-controlled DNS configurations
• Provide technical guidance and mentorship to junior engineers regarding DNS protocols and systems administration

Desired Skills/Experience:

• 4+ years of hands-on experience managing and maintaining enterprise or lab-grade DNS environments
• Strong mastery of DNS architecture, recursive versus authoritative resolution, and protocol-level operations
• Experience with DDI platforms such as Infoblox, BlueCat, or BIND/ISC DHCP
• Proficiency in Linux/Unix systems administration and shell scripting for task automation
• Familiarity with virtualization and container platforms (VMware, OpenStack, Kubernetes) and their specific DNS requirements
• Proven ability to manage complex projects in a fast-paced, experimental environment
• Strong collaboration skills with the ability to translate research needs into technical system requirements
• Excellent problem-solving skills, with a focus on root-cause analysis in multi-vendor environments

Benefits:

• Medical, Dental, & Vision Insurance Plans
• Employee-Owned Profit Sharing (ESOP)
• 401K offered

The approximate pay range for this position is between $42.00 and $52.00 . Please note that the pay range provided is a good faith estimate. Final compensation may vary based on factors including but not limited to background, knowledge, skills, and location. We comply with local wage minimums.


At KellyMitchell, our culture is world class. We're movers and shakers! We don't mind a bit of friendly competition, and we reward hard work with unlimited potential for growth. This is an exciting opportunity to join a company known for innovative solutions and unsurpassed customer service. We're passionate about helping companies solve their biggest IT staffing & project solutions challenges. As an employee-owned, women-led organization serving Fortune 500 companies nationwide, we deliver expert service at a moment's notice.


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