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Tier 3 Systems Engineer Jobs in Arizona (NOW HIRING)

FlexTG

Systems Engineer - ITSM

Mesa, AZ · Hybrid

$95K - $110K/yr

Independently troubleshoot and resolve Tier 3 systems and infrastructure issue * Perform root cause ... engineers * Perform routine system maintenance and monitor system performance to maximize uptime ...

GDIT

$100K - $136K/yr

Provide Tier III support for EPDNS and DNSrelated infrastructure, performing advanced ... The Senior Systems Engineer must have: Education: Bachelor's Degree. An additional 4 years of ...

GDIT

$88K - $115K/yr

Lead/Manage/Support full lifecycle Tier III engineering activities within the ITEF, including patch ... The Systems Engineer Senior must have: Education: Bachelor of Arts/Bachelor of Science or ...

FlexTG

Systems Engineer CRM Dynamics365

Mesa, AZ · Hybrid

Troubleshoot and resolve Tier 3 system and application issues , including root cause analysis ... Engineer, Systems Administrator, or similar role * Strong hands-on experience with Microsoft ...

CPS, LLC

Senior Systems Engineer (SYSMAN)

Sierra Vista, AZ · On-site

$93K - $127K/yr

... III), you will support SysMan Enterprise technologies to automatically and persistently consolidate ... You will assess SysMan Tier 0 architecture and current hardware limitations and assist the ...

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Tier 3 Systems Engineer information

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 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 popular job titles related to Tier 3 Systems Engineer jobs in Arizona? For Tier 3 Systems Engineer jobs in Arizona, the most frequently searched job titles are:
What job categories do people searching Tier 3 Systems Engineer jobs in Arizona look for? The top searched job categories for Tier 3 Systems Engineer jobs in Arizona are:
What cities in Arizona are hiring for Tier 3 Systems Engineer jobs? Cities in Arizona with the most Tier 3 Systems Engineer job openings:
Tier 3 Systems Engineer jobs near you
Infographic showing various Tier 3 Systems Engineer job openings in Arizona as of August 2026, with employment types broken down into 86% Full Time, and 14% Contract. Highlights an 100% In-person job distribution.

Systems Engineer - ITSM

FlexTG

Mesa, AZ • Hybrid

$95K - $110K/yr

Full-time

This job post has expired today. Applications are no longer accepted.

Job description

Company Overview 
FlexTG is the largest Brand-Neutral Managed Print Services provider with an industry-leading Nationwide footprint. We are service and solutions professionals, providing support to clients of all sizes and industries from coast to coast. Our vast support network and unique proprietary technology make us more than Best-in-Class - we are in a class of our own. 

Position Summary
The Systems Engineer is responsible for designing, implementing, securing, and maintaining the core technology services that support an organization’s productivity and operational resilience. This role requires hands‑on technical expertise, strong problem‑solving skills, and the ability to operate effectively in complex environments. The Systems Engineer plays a key part in ensuring reliable systems, driving continuous improvement, and supporting both IT and business operations. 
The salary range for this role is $95,000-$110,000

Essential Functions and Responsibilities  

  • Administer and support enterprise infrastructure and platform systems, ensuring comprehensive oversight of critical services

  • Independently troubleshoot and resolve Tier 3 systems and infrastructure issue

  • Perform root cause analysis (RCA) for Tier 3 incidents, documenting findings, corrective actions, and preventative recommendations, and implementing approved corrective changes for review by senior engineers

  • Perform routine system maintenance and monitor system performance to maximize uptime, availability and reliability across hybrid environments

  • Integrate and support hybrid/cloud infrastructure leveraging integration platforms where applicable

  • Execute backup, recovery, and resilience activities in alignment with documented disaster recovery and business continuity plans, including periodic restore validation and documentation of gaps and remediation actions

  • Collaborate on adoption strategies, migration planning, and infrastructure modernization projects, contributing technical input during said initiatives

  • Maintain and enhance automation tools and scripts, contributing improvements within established frameworks and automation standards, including development of new workflows where needed to reduce manual effort and configuration drift

  • Identify and escalate Tier 4 or systemic risks, including architectural gaps, recurring failure patterns, or vendor-level defects requiring senior ownership, and provide supporting analysis and recommended options to accelerate decision-making. 

  • Ensure ITSM practices align with ITIL's best practices to improve service quality and customer satisfaction

  • Implement ServiceNow REST APIs, web services, and custom scripts to connect with external systems for efficient ticket sharing

  • Work with ServiceNow's ITSM/CSM/FSM/HRSD modules to enhance ticket management and overall business effectiveness

Qualifications and Experience
Minimum Qualifications: 

  • 3+ years of proven experience working within IT or a related field in a System Administrator or equivalent role.

  • Bachelor’s degree in IT related discipline or equivalent professional experience

  • Strong critical thinking abilities with a track record of analyzing issues and developing effective solutions.

  • Solid problem-solving skills and the ability to remain effective under pressure. 

  • Ability to manage multiple priorities and work independently with minimal supervision.

  • Strong communication skills with the ability to collaborate across technical and non-

    technical teams. 

  • ITIL Foundation certification is preferred.

  • Hands-on experience with ServiceNow ITSM tool configuration, customization, and integration.

Preferred Qualifications: 

  • ITIL Foundation certification.

  • ServiceNow CSA or CSD.

  • Hands-on experience with ServiceNow ITSM tool configuration, customization, and integration.

  • Experience with disaster recovery planning and enterprise backup technologies.

  • Familiarity with hybrid or cloud environments (e.g., Azure, AWS, or similar).

  • Experience with automation, scripting, or modern systems management tools.

  • Understanding of security best practices and basic compliance requirements

 
Disclaimer 
This job description is not designed to cover or contain a comprehensive list of activities, duties or responsibilities that are required of the employee. Duties, responsibilities, and activities may change, or new ones may be assigned at any time with or without notice. The job description does not constitute an employment contract or guarantee of employment. The organization reserves the right to hire, fire, or discipline the employees at its discretion. 

EEO Statement 
FlexTG provides equal employment opportunities to all employees and applicants for employment. The Company prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, sexual orientation, gender identity or expression, national origin or ancestry, citizenship or immigration status, physical or mental disability, genetic information (including testing and characteristics), pregnancy (including childbirth, lactation and related medical conditions), protected veteran status, uniformed servicemember status, or any other characteristic protected by federal, state or local laws.  This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, benefits, leaves of absence, compensation, and training.  

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