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Infrastructure System Engineer Jobs in O Fallon, MO

savealot

Infrastructure Engineer

Saint Ann, MO · On-site

$100K - $132K/yr

Purpose The Infrastructure Engineer performs a critical role in defining and implementing cloud ... Bachelor's degree in information systems, or related field, OR at least 3+ years of applicable ...

Save A Lot

Infrastructure Engineer

Saint Ann, MO · On-site

$79K - $100K/yr

Purpose The Infrastructure Engineer performs a critical role in defining and implementing cloud ... Bachelor's degree in information systems, or related field, OR at least 3+ years of applicable ...

CACI

Systems Engineer

Saint Louis, MO · Hybrid

Define system capabilities, performance requirements, and technology maturity constraints for ... or critical infrastructure programs. Knowledge of Model-Based Systems Engineering (MBSE ...

New

Maryville University

Cybersecurity Engineer

Saint Louis, MO · On-site

$80K - $115K/yr

... systems, networks, applications, and cloud infrastructure that support thousands of students ... As a Cybersecurity Engineer, you'll have the opportunity to: * Lead cybersecurity initiatives that ...

KBR

Chief Systems Engineer

Saint Louis, MO

Assis the government in modernization of infrastructure and capabilities. * Oversee and coordinate the work of Senior-, Mid-, and Junior-level contractor Systems Engineers. Required Qualifications ...

Control Devices LLC

Controls Engineer

Fenton, MO · On-site

$80K - $103K/yr

System architecture design (PLC/HMI/DCS, I/O, networks, computer infrastructure) * Electrical ... Robotic programming and support * HMI/SCADA application development and screen design * Design ...

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All JobsInfrastructure System Engineer JobsInfrastructure System Engineer Jobs in O'Fallon, MO

Infrastructure System Engineer information

See O Fallon, MO salary details

$43.5K

$118.9K

$170.3K

How much do infrastructure system engineer jobs pay per year?

As of Sep 1, 2026, the average yearly pay for infrastructure system engineer in O'Fallon, MO is $118,868.00, according to ZipRecruiter salary data. Most workers in this role earn between $100,600.00 and $131,900.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as an infrastructure system engineer?

To thrive as an Infrastructure System Engineer, you need a strong background in systems administration, networking, and IT infrastructure management, usually backed by a degree in computer science or a related field. Familiarity with tools like VMware, Microsoft Azure, AWS, Linux/Windows servers, and certifications such as CompTIA Network+, Microsoft Certified: Azure Administrator, or AWS Certified Solutions Architect are typically required. Problem-solving, teamwork, and effective communication are essential soft skills for collaborating across departments and responding to critical incidents. These skills and qualifications are crucial for maintaining reliable, secure, and scalable IT environments that support business operations.

What are some common challenges faced by infrastructure system engineers when managing large-scale systems?

Infrastructure System Engineers often encounter challenges such as ensuring system scalability, maintaining high availability, and minimizing downtime during updates or incidents. Monitoring and proactively addressing security vulnerabilities across complex, distributed environments is another critical aspect. Collaborating with cross-functional teams, such as development and operations, is essential to align infrastructure changes with business goals and rapidly address emerging issues. Staying current with evolving technologies and best practices helps in overcoming these challenges effectively.

What is the difference between Infrastructure System Engineer vs Network Engineer?

AspectInfrastructure System EngineerNetwork Engineer
CertificationsCompTIA Network+, Cisco CCNA, Microsoft certificationsCompTIA Network+, Cisco CCNA, Juniper JNCIA
Work EnvironmentData centers, server rooms, cloud environmentsNetwork operations centers, enterprise networks
Industry UsageIT infrastructure, cloud services, enterprise systemsTelecommunications, enterprise networking, internet service providers

While both roles require networking certifications and involve working with IT infrastructure, Infrastructure System Engineers focus on overall system architecture, servers, and cloud integration, whereas Network Engineers specialize in designing, implementing, and maintaining network hardware and connectivity. Understanding these differences helps employers and candidates align skills with job requirements.

How much do infrastructure system engineers get paid?

Infrastructure system engineers typically earn a median annual salary ranging from $70,000 to $110,000, depending on experience, location, and certifications. Salaries can be higher for those with specialized skills in cloud platforms, networking, or security, and often include benefits such as health insurance and retirement plans.

Is infrastructure system engineer a high paying job?

Infrastructure System Engineers typically earn competitive salaries that vary based on experience, location, and certifications such as Cisco or Microsoft. In general, they have higher earning potential compared to many entry-level IT roles due to their specialized skills in network, server, and system management.

What is an infrastructure system engineer?

An infrastructure system engineer designs, implements, and maintains the core technology systems that support an organization's IT environment, including servers, networks, and data centers. They often work with cloud platforms, scripting, and monitoring tools to ensure system reliability and security. Strong problem-solving skills and knowledge of networking, virtualization, and security are essential for this role.

What are popular job titles related to Infrastructure System Engineer jobs in O'Fallon, MO?

For Infrastructure System Engineer jobs in O'Fallon, MO, the most frequently searched job titles are:

What job categories do people searching Infrastructure System Engineer jobs in O'Fallon, MO look for?

The top searched job categories for Infrastructure System Engineer jobs in O'Fallon, MO are:

What cities near O'Fallon, MO are hiring for Infrastructure System Engineer jobs?

Cities near O'Fallon, MO with the most Infrastructure System Engineer job openings:

Infrastructure System Engineer jobs near you
Infographic showing various Infrastructure System Engineer job openings in O'Fallon, MO as of August 2026, with employment types broken down into 1% As Needed, 81% Full Time, 15% Part Time, and 3% Contract. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $118,868 per year, or $57.1 per hour.

Infrastructure Engineer

savealot

Saint Ann, MO • On-site

$100K - $132K/yr

Full-time

Re-posted 12 days ago

Job description

Purpose

The Infrastructure Engineer performs a critical role in defining and implementing cloud-based solutions and strategies. This role is responsible for leading complex efforts, mentoring others and leading level-3 support. This individual is a highly effective and experienced with various development tools, IT infrastructure components and has proven experience designing, developing, implementing technology solutions using Agile methodologies. The candidate will be supporting Infrastructure and Operations services, with a focus on cloud technologies.   

Responsibilities

  • Work with business and technology partners to understand needs from the client perspective
  • Drive technology discussions and facilitate decision with other teams within the organization
  • Collaborate cross-functionally to develop our target state cloud platform and infrastructure
  • Gather technical requirements, assess capabilities, and analyze findings to provide appropriate cloud platform solution recommendations and adoption strategy
  • Design, build, and deploy efficient solutions that improve efficiencies and add value to the business
  • Develop creative and efficient solutions for migration to cloud environments
  • Design and build technology solutions, including the process, integrations, and automation
  • Automate testing and execution of playbook actions
  • Identify and execute on opportunities to automate and simplify lifecycle management
  • Implement best-practice standards that will be leveraged by business units to streamline and simplify cloud platform operations
  • Operate and maintain cloud-based solutions to ensure high performance and reliability
  • Define and govern operational processes, guidelines, and standards that facilitate robust, scalable, cost-effective, and innovative services
  • Manage risk identification within the technical architecture in partnership with security teams
  • Ensure alerts and events are flowing across various cloud-based services and partners
  • Normal business hours and some after-hours/on-call responsibilities
  • Support projects and initiatives to deliver on strategic goals, including building automation to improve efficiencies
  • Work closely with agile teams to prioritize the implementation of user stories while balancing priorities, ensuring continuous delivery or business value
  • Track time and complete assignments on schedule
  • Build, maintain, and promote strong technical documentation
  • Mentor and cross-train team members
  • Keep abreast of and gain expertise in the evolving technology and understand how new technologies could be applied to our Cloud platform offerings
  • Develop and maintain an operational dashboard to track and report on the health of IT systems, including alignment or impact to business services
  • Executes POCs and feasibility studies to validate next-gen product concepts, technologies, and services leveraging results to guide business and technology decisions
  • Research, test, and understand the relevant products and product capability
  • Participate in the vendor community on relevant products and product capability

About You

  • Bachelor's degree in information systems, or related field, OR at least 3+ years of applicable experience 
  • Experience with Windows Server and/or Linux distributions, Windows Server 2012 or above, Linux distributions (Red Hat-based or Debian-based)
  • Experience developing infrastructure as code and with a least a couple of the following tools:
    • PowerShell
    • JSON
    • Python
    • Azure CLI
    • AWS CLI
    • Terraform
    • PowerCLI
    • Javascript
    • OAuth, webhooks, and REST API
  • A solid understanding of SNMP, Syslog, RMON, and other messaging and agent facilities
  • Experience supporting cloud-native applications in an agile manner using DevOps concepts and principles
  • Distributed systems design experience and integrating multiple systems using enterprise integration patterns and standard methodologies.
  • Proficiency in implementing Group Policy
  • Experience maintaining Active Directory
  • Basic networking skills used in troubleshooting client issues

 

Physical Requirements

  • Ability to travel up to ~10% of the time, which may include weekends and evenings, as needed
  • Most work is performed in a temperature-controlled environment
  • Incumbent may sit for long periods of time at a desk or computer terminal
  • Incumbent may use calculators, keyboards, telephone and other office equipment in the course of a normal workday
  • Stooping, bending, twisting and reaching may be required in completion of job duties

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