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Tier 3 Systems Engineer Jobs in Missouri (NOW HIRING)

Systems Engineer 3 LOCATION: Berkeley, MO PAY RATE: $78.00/hour We are a national aerospace and ... Bonus potential + Priority access via Tier 1 supplier * Openings Nationwide: Thousands of ...

Job#: 3042793 Systems Engineer 3 Location: Berkeley, Missouri (Onsite) Role Overview Our organization is seeking a Systems Engineer to apply an interdisciplinary, collaborative approach to the ...

... 3+ years of work-related engineering experience with a relevant Master's or PhD Prior Systems Engineering experience to include but not limited to system design, functional decomposition ...

Systems Engineer 3

Berkeley, MO · On-site

$89.54 - $96.43/hr

Boeing Defense, Space & Security (BDS) for Air Dominance is seeking an Experienced Contract Reliability & Maintainability Systems Engineer (Level 3) to support the Systems Engineering Integration ...

Support system architecture development and decomposition using MBSE (SysML/Cameo) to define ... Experience: Candidates must have 3+ years of related engineering experience with a Bachelor ...

Sr Systems Engineer

Saint Louis, MO · On-site +1

$101K - $139K/yr

* Work with operational IT technical leads, senior developers to identify tasks and various needs ... Tier 3 support for Application Management systems in both non-prod and prod environments.

Systems Engineer / FSR

Saint Louis, MO · On-site

$123K - $156K/yr

We have a top-tier portfolio of businesses, including Cubic Transportation Systems (CTS) and Cubic ... This role requires strong systems-engineering experience, sound technical judgment, and the ability ...

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Tier 3 Systems Engineer information

What is a Tier 3 systems engineer?

Tier 3 Systems Engineers are highly skilled IT professionals who handle the most complex technical issues within an organization’s IT infrastructure. They provide advanced support, troubleshoot escalated problems, and often design or implement system improvements. Tier 3 engineers typically possess deep expertise in areas like networking, server management, security, and cloud technologies. They may also mentor lower-tier support staff and contribute to strategic IT planning.

What are the key skills and qualifications needed to thrive as a Tier 3 systems engineer, and why are they important?

To thrive as a Tier 3 Systems Engineer, you need advanced expertise in systems administration, troubleshooting, and network infrastructure, often supported by a degree in computer science and certifications like CompTIA, Microsoft, or Cisco. Familiarity with enterprise operating systems, virtualization platforms, cloud services, and monitoring tools is typically required. Excellent problem-solving, communication, and collaboration skills distinguish top performers in resolving complex technical issues. These skills and qualifications are vital for ensuring system reliability, minimizing downtime, and supporting business-critical IT operations.

What are some common challenges faced by Tier 3 systems engineers, and how can they be addressed?

Tier 3 Systems Engineers often handle the most complex technical issues that lower-tier support cannot resolve, which can be challenging due to the need for deep technical expertise and swift problem-solving. They may also encounter pressure to resolve critical incidents quickly to minimize business disruption. Collaborative troubleshooting with other IT teams, continuous learning to stay updated on emerging technologies, and strong documentation practices are key strategies to manage these challenges effectively. Building good communication skills also helps in explaining complex solutions to non-technical stakeholders.

What is the difference between Tier 3 Systems Engineer vs Tier 2 Systems Engineer?

AspectTier 3 Systems EngineerTier 2 Systems Engineer
CertificationsAdvanced certifications like Cisco CCNP, Microsoft MCSEEntry to mid-level certifications like CompTIA Network+, Cisco CCNA
Work EnvironmentComplex troubleshooting, advanced system design, client escalationRoutine support, basic troubleshooting, user assistance
ResponsibilitiesHandling complex issues, system upgrades, architecture planningResponding to user tickets, basic maintenance, issue resolution

The main difference between a Tier 3 Systems Engineer and a Tier 2 Systems Engineer lies in their level of expertise and responsibilities. Tier 3 Engineers handle more complex problems, system architecture, and advanced troubleshooting, often requiring higher certifications. Tier 2 Engineers focus on routine support and basic troubleshooting. Both roles are essential in IT support hierarchies, but Tier 3 Engineers typically work on more advanced projects and escalated issues.

What are popular job titles related to Tier 3 Systems Engineer jobs in Missouri?

For Tier 3 Systems Engineer jobs in Missouri, the most frequently searched job titles are:

What cities in Missouri are hiring for Tier 3 Systems Engineer jobs?

Cities in Missouri with the most Tier 3 Systems Engineer job openings:

Infographic showing various Tier 3 Systems Engineer job openings in Missouri as of August 2026, with employment types broken down into 1% As Needed, 88% Full Time, 7% Part Time, 3% Contract, and 1% Nights. Highlights an 89% Physical, 3% Hybrid, and 8% Remote job distribution.

Help Desk Tier III (Systems Administrator)

D&G Support Services, LLC

Saint Louis, MO • On-site

$60K - $80K/yr

Full-time

Retirement, PTO

Posted 11 days ago


Job description

Help Desk Analyst (Systems Administrator)

ON SITE | Scott AFB, Illinois | Shift Work | Ability to Obtain Secret Clearance

NO RELOCATION AVAILABLE- Position is ONSITE @ Scott Air Force Base- Illinois.

If you enjoy solving technical problems, supporting mission-critical logistics systems, and helping users keep essential applications running, we would love to talk.

Why This Role Exists

The work we do has real impact, and the people behind it matter just as much.

D amp;G is seeking a Help Desk Analyst (Systems Administrator) to support the United States Transportation Command (USTRANSCOM) Integrated Data Environment amp; Global Transportation Network Convergence (IGC) Program. IGC provides a centralized platform for accessing common data, business services, and material asset visibility, delivering integrated logistics information that supports Combatant Commands, Military Services, and other Federal agencies.

This role is ideal for someone who enjoys troubleshooting complex technical issues, supporting enterprise applications, and ensuring mission-critical systems remain available for users across the Department of Defense logistics enterprise.

What You Will Do

• Monitor, troubleshoot, and support IGC production applications while responding to user incidents submitted through support tickets, email, phone, and in-person requests.
• Diagnose and resolve hardware, software, application, and system issues in a timely manner.
• Provide technical guidance and user support for application functionality, troubleshooting, and issue resolution.
• Test and evaluate new technologies to improve or enhance existing systems and processes.
• Monitor system health, performance, and usage, producing reports and recommendations as needed.
• Collaborate with software developers, system administrators, QA teams, and other cross-functional stakeholders to resolve technical issues.
• Document, track, and maintain detailed records of incidents, resolutions, and system changes.
• Maintain and update internal IT procedures, technical documentation, and knowledge base articles.
• Participate in system maintenance activities and support continuous process improvements.
• Support additional technical and program requirements as assigned by the Program Manager.

What We Are Looking For

Required

• Bachelor's degree in Information Technology, Cybersecurity, Data Science, Information Systems, Computer Science, or a related technical field.

OR

• Bachelor's degree in any field and one of the following certifications:
• CompTIA Cloud+
• SSCP
• CompTIA Security+
• GIAC Security Essentials (GSEC)

• Experience with PowerShell, Bash, or Python.
• Experience supporting enterprise technologies such as TCP/IP, DHCP, DNS, VPNs, VMware, Hyper-V, or KVM.
• Strong analytical, troubleshooting, and problem-solving skills.
• Excellent written and verbal communication skills.
• Ability to obtain and maintain a DoD Secret security clearance.

Preferred

• Experience supporting Federal Government IT systems.
• Experience supporting Department of Defense enterprise environments.
• Experience with enterprise service desk operations and ticket management systems.
• Familiarity with Windows Server administration, virtualization technologies, and enterprise networking concepts.

Clearance and Eligibility

• Ability to obtain and maintain a DoD Secret security clearance.
• This role is restricted to U.S. person(s) (U.S. citizens, permanent residents, and other protected individuals under 8 U.S.C. 1324b(a)(3)).

Location

• On site at Scott Air Force Base, Illinois. - NO RELOCATION AVAILABLE.
• Shift work is required to support operational requirements.

Who We Are

At D amp;G Solutions, people come first; our teammates, customers, and the communities we serve.

We are one of the fastest growing companies in the Washington, DC area and proud to be recognized nationally as a Best Place to Work. As an 8(a), Service-Disabled Veteran-Owned, and Women-Owned Small Business, we bring ownership, accountability, and care to everything we do.

Our teams are welcoming, collaborative, and deeply committed to mission success. We believe great work happens when people feel supported, respected, and trusted, and we work hard to create that environment every day.

We also believe in giving back and proudly support organizations such as Homes for Our Troops, SemperK9, and Wreaths Across America.

What We Offer

Competitive salary | Comprehensive benefits | 401(k) | Bonus opportunities | Education reimbursement | Generous paid time off

Final Note

If you want to work for a company that cares about its people, contribute to a mission that truly matters, and be part of a team where you are valued for who you are as well as what you do, we would love to hear from you.