Senior Systems Engineer

Apex Systems; San Diego (CA); On-site; USD 120,000 - 160,000; Full time

Benefits offered by this job

Medical, dental, vision insurance

401K with company match

HSA (Health Savings Account)

Employee Assistance Program (EAP)

Certification training benefits

Job summary

Everforth Apex Systems in San Diego, CA, seeks a Senior Systems Engineer to support a mission-critical enterprise network. You will serve as a senior technical resource for DNS infrastructure, cybersecurity compliance, and Tier III operational support across secure environments.

The role requires hands-on engineering for DNS, DNSSEC, Infoblox DDI, VMware/Hyper-V, and scripting. You will develop system diagrams, SOPs, and guidance while ensuring service availability and adherence to RMF security

Qualifications

• Bachelor's degree in IT, CS, Engineering, or related field; 4 years of experience may substitute.
• 5+ years of experience supporting enterprise systems, network engineering, cybersecurity, or infrastructure operations.
• Expertise in enterprise DNS administration, Infoblox DDI, DNSSEC, IPAM, ISC BIND, TCP/IP networking, VMware/Hyper-V, PowerShell, Linux/Unix, shell scripting, Oracle databases, configuration management, root cause analysis, Tier III support, and cybersecurity compliance.
• DoD 8570 IAT Level III certification (e.g., CASP+, CISSP, CCNP Security) and a Computing Environment Certification.

Responsibilities

• Provide engineering, integration, implementation, and operational support for enterprise DNS infrastructure and related network services.
• Plan, design, test, validate, and deploy system enhancements and technology upgrades.
• Maintain configuration baselines and oversee enterprise infrastructure changes to ensure service availability and compliance.
• Install, configure, and maintain servers, virtualized environments, databases, security appliances, and supporting technologies within secure lab and production environments.
• Administer and support enterprise DNS services, including DNSSEC signing and validation.
• Configure and manage Infoblox DDI platforms, Grid Management, and IP Address Management solutions.
• Perform advanced troubleshooting and root cause analysis for DNS-related issues and service outages.
• Implement and maintain Risk Management Framework security controls and cybersecurity requirements.
• Evaluate system vulnerabilities and support remediation activities associated with security findings.
• Develop and maintain system diagrams, architecture documents, standard operating procedures, and technical guidance materials.

Skills

Enterprise DNS

DNSSEC

Networking

Tier III Support

Cybersecurity Compliance

Education

Bachelor's Degree in IT / CS / Engineering or related

Tools

Infoblox DDI

DNSSEC

IPAM

ISC BIND

VMware

Hyper-V

PowerShell

Linux/Unix

Shell Scripting

Oracle Databases

Configuration Management

Job description

Job#: 3057495

Job Description:

Senior Systems Engineer

Location: San Diego, California (On-site)

Role Overview

This organization is seeking a Senior Systems Engineer to support a mission-critical enterprise network environment. The selected candidate will serve as a senior technical resource responsible for enterprise Domain Name System infrastructure, cybersecurity compliance, systems engineering, and Tier III operational support across secure network environments. This position requires a strong blend of systems engineering, network infrastructure, and operational support expertise to ensure service availability and compliance.

Key Responsibilities

• Provide engineering, integration, implementation, and operational support for enterprise DNS infrastructure and related network services.
• Support planning, design, testing, validation, and deployment of system enhancements and technology upgrades.
• Maintain configuration baselines and oversee enterprise infrastructure changes to ensure service availability and compliance.
• Install, configure, and maintain servers, virtualized environments, databases, security appliances, and supporting technologies within secure lab and production environments.
• Administer and support enterprise DNS services, including DNSSEC signing and validation.
• Configure and manage Infoblox DDI platforms, Grid Management, and IP Address Management solutions.
• Perform advanced troubleshooting and root cause analysis for DNS-related issues and service outages.
• Implement and maintain Risk Management Framework security controls and cybersecurity requirements.
• Evaluate system vulnerabilities and support remediation activities associated with security findings.
• Develop and maintain system diagrams, architecture documents, standard operating procedures, and technical guidance materials.

Required Qualifications

Education: Bachelor's Degree in Information Technology, Computer Science, Engineering, or a related discipline. An additional 4 years of relevant experience may be substituted in lieu of a degree.

Experience: 5+ years of experience supporting enterprise systems, network engineering, cybersecurity, or infrastructure operations, preferably within federal government environments.

Technical Skills: Enterprise DNS Administration, Infoblox DDI, DNSSEC, IPAM, ISC BIND, TCP/IP Networking, VMware, Hyper-V, PowerShell, Linux/Unix Administration, Shell Scripting, Oracle Databases, Configuration Management, Root Cause Analysis, Tier III Support Operations, and Cybersecurity Compliance.

Certifications: DoD 8570 IAT Level III Certification (such as CASP+, CISSP, CCNP Security, or equivalent) and a Computing Environment Certification.

Preferred Qualifications

• Experience supporting unclassified and classified enterprise network environments.
• Experience with enterprise DNS architectures supporting global operations.
• Knowledge of vulnerability remediation processes.
• Experience with Solaris environments and security appliances.
• Familiarity with Visio, Microsoft Office Suite, and enterprise ticketing systems.

Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Everforth Apex team member can provide.

Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.

UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.

© 2026 Everforth, Inc. All rights reserved.

Everforth Apex Systems is part of the Commercial Segment of Everforth, Inc.

NYSE: EFOR

4400 Cox Road

Suite 200

Glen Allen, Virginia 23060

Everforth Apex is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Benefits Department at [email protected] or 804-523-8228. (Do not submit resumes or solicit consultants to this email address). UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex.