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Senior Infrastructure Engineer Jobs in O Fallon, IL

Boeing

Senior DevSecOps Engineer

Berkeley, MO · On-site

$107K - $147K/yr

Senior DevSecOps Engineer Company: The Boeing Company The Boeing Company is currently seeking a ... Leads the creation and maintenance of Infrastructure as Code (IaC) and automation to simplify ...

Boeing

Senior DevSecOps Engineer

Berkeley, MO · On-site

$107K - $147K/yr

Senior DevSecOps Engineer Company: The Boeing Company The Boeing Company is currently seeking a ... Leads the creation and maintenance of Infrastructure as Code (IaC) and automation to simplify ...

AB InBev

Senior Engineer, Platform Services

Saint Louis, MO · On-site

$101K - $139K/yr

The Sr. Engineer, Platform Services is a senior-level individual contributor responsible for ... This role partners closely with Software Engineering, Cloud Infrastructure, Security, Enterprise ...

Navtech, Inc.

Sr AWS Engineer

Saint Louis, MO · On-site

$101K - $139K/yr

I have an opportunity for a "Sr AWS Engineer" - (St Louis, MO - Remote). and I am looking for a ... Infrastructure Build RESPONSIBILITY: * Daily support for redshift and snowflake * Develop new ...

Husch Blackwell Llp

Senior Software Engineer

Saint Louis, MO · On-site +1

$114K - $151K/yr

The Senior Software Engineer designs, builds, and maintains the technical systems and application infrastructure that power high-quality, human-centered information experiences. This role is ...

Husch Blackwell LLP

Senior Software Engineer

Saint Louis, MO · On-site +1

$114K - $151K/yr

The Senior Software Engineer designs, builds, and maintains the technical systems and application infrastructure that power high-quality, human-centered information experiences. This role is ...

MasTec Industrial

Sr. Project Engineer

Saint Louis, MO · On-site

$96K - $125K/yr

Overview: The Sr. Project Engineer role will oversee and execute the project controls and ... In infrastructure, we specialize in general heavy civil construction, underground utilities ...

MasTec Industrial

Sr. Project Engineer

Saint Louis, MO · On-site

$96K - $125K/yr

Overview: The Sr. Project Engineer role will oversee and execute the project controls and ... In infrastructure, we specialize in general heavy civil construction, underground utilities ...

bioMérieux

Sr. Software Engineer

Hazelwood, MO · On-site

$115K - $152K/yr

The Senior Software Engineer works within established architectural frameworks, enhances CI/CD and ... Implements infrastructure as code (IaC) solutions using AWS CloudFormation, containerized ...

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Showing results 21-40

All JobsInfrastructure Engineer JobsSenior Infrastructure Engineer JobsSenior Infrastructure Engineer Jobs in O'Fallon, IL

Senior Infrastructure Engineer information

See O Fallon, IL salary details

$21K

$118.4K

$163.7K

How much do senior infrastructure engineer jobs pay per year?

As of Aug 8, 2026, the average yearly pay for senior infrastructure engineer in O'Fallon, IL is $118,438.00, according to ZipRecruiter salary data. Most workers in this role earn between $101,200.00 and $137,600.00 per year, depending on experience, location, and employer.

What is a senior infrastructure engineer?

Senior Infrastructure Engineers are experienced IT professionals responsible for designing, implementing, maintaining, and optimizing an organization’s core technology infrastructure. This includes servers, networks, cloud environments, and related systems that support business operations. They often lead projects, troubleshoot complex issues, and ensure the reliability, security, and scalability of the infrastructure. In addition to technical expertise, they may mentor junior engineers and collaborate with other departments to align technology with business goals.

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

AspectSenior Infrastructure EngineerNetwork Engineer
CredentialsBachelor's in Computer Science or related, certifications like Cisco CCNA/CCNP, AWS, or AzureBachelor's in Computer Science or related, Cisco CCNA/CCNP, CompTIA Network+
Work EnvironmentDesigning, implementing, and maintaining IT infrastructure, servers, cloud servicesConfiguring, managing, and troubleshooting network hardware and connectivity
Employer & Industry UsageTech companies, data centers, large enterprisesTelecommunications, IT service providers, corporate networks

While both roles require networking knowledge and certifications, Senior Infrastructure Engineers focus on overall infrastructure design and cloud integration, whereas Network Engineers specialize in network hardware and connectivity. The Senior Infrastructure Engineer role is broader, often overseeing multiple systems, while Network Engineers concentrate on network-specific tasks.

What are the key skills and qualifications needed to thrive as a senior infrastructure engineer, and why are they important?

To thrive as a Senior Infrastructure Engineer, you need deep expertise in network architecture, server management, cloud platforms, and a relevant degree or certifications like AWS Certified Solutions Architect or Microsoft Certified: Azure Administrator. Proficiency with infrastructure-as-code tools (e.g., Terraform, Ansible), virtualization platforms, and monitoring systems is typical in this role. Strong problem-solving skills, leadership, and effective communication help you manage complex projects and collaborate across teams. These skills ensure reliable, secure, and scalable IT environments that support organizational goals.

What are some common challenges faced by senior infrastructure engineers when supporting large-scale systems?

Senior Infrastructure Engineers often encounter challenges such as ensuring high availability and reliability of systems, managing complex migrations, and optimizing performance under heavy workloads. Coordinating with development and security teams is essential to implement infrastructure changes without disrupting services. Additionally, staying ahead of evolving technologies and automating routine tasks can be demanding but crucial for efficiency and scalability. Successfully navigating these challenges requires strong technical expertise, proactive problem-solving, and effective cross-team communication.
What cities near O'Fallon, IL are hiring for Senior Infrastructure Engineer jobs? Cities near O'Fallon, IL with the most Senior Infrastructure Engineer job openings:
Senior Infrastructure Engineer jobs near you
Infographic showing various Senior Infrastructure Engineer job openings in O'Fallon, IL as of August 2026, with employment types broken down into 85% Full Time, 7% Part Time, 5% Contract, and 3% Nights. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $118,438 per year, or $56.9 per hour.

Senior Elastic Engineer with Security Clearance

Zachary Piper Solutions, LLC

Caseyville, IL • On-site

$190K - $230K/yr

Other

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

Job description

Zachary Piper Solutions is seeking an experienced Senior Elastic Engineer to support a high-visibility federal modernization effort focused on migrating enterprise security logging and observability platforms from Splunk to Elastic. This position will support mission-critical infrastructure at Scott Air Force Base, IL , where the selected engineer will lead Elastic architecture, Kubernetes deployments, and custom data ingestion solutions within a secure DoD environment. The ideal candidate will have deep expertise with the Elastic Stack, Kubernetes/ECK deployments, and designing scalable, production-grade logging and security platforms. SECRET CLEARANCE REQUIRED Key Responsibilities * Design, deploy, and maintain enterprise Elastic Stack environments supporting security logging, search, and observability. * Lead migration efforts from Splunk to Elastic while ensuring minimal operational disruption. * Build and implement custom data ingestion pipelines for enterprise security and operational data. * Configure and manage Index Lifecycle Management (ILM) policies and data retention strategies. * Deploy and administer Elastic Cloud on Kubernetes (ECK) environments using Kubernetes operators. * Optimize Elastic cluster performance, scalability, reliability, and availability across production environments. * Troubleshoot complex Elastic infrastructure, Kubernetes, and distributed system issues. * Support security-focused logging, SIEM integrations, and enterprise observability initiatives. * Develop automation and operational best practices for Elastic platform administration. * Maintain technical documentation, deployment standards, and operational procedures. Qualifications * 7+ years of experience supporting Elastic engineering, platform engineering, Site Reliability Engineering (SRE), or infrastructure engineering. * Strong hands-on experience designing and administering enterprise Elastic Stack environments. * Experience building custom data ingestion pipelines and managing large-scale logging platforms. * Advanced Kubernetes experience with Elastic Cloud on Kubernetes (ECK) deployments preferred. * Experience troubleshooting complex Elastic architectures and distributed environments. * Ability to work onsite at Scott Air Force Base, IL. * Active Secret Clearance required (Interim Secret or Interim Top Secret may be considered).
Nice-to-Haves * Experience leading Splunk-to-Elastic migration projects. * Experience supporting SIEM, security logging, and enterprise observability platforms. * Familiarity with Kubernetes operators and containerized infrastructure. * Experience supporting DoD, federal, or classified environments. * Elastic certifications (Engineer, Security, or Observability). Soft Skills * Strong analytical and problem-solving abilities. * Ability to independently design and implement complex Elastic solutions. * Comfortable working in fast-paced, mission-critical environments. * Excellent communication and collaboration skills across engineering and government stakeholders. * Self-motivated with the ability to work independently while supporting a highly technical team. Compensation & Benefits * Compensation: $190,000-$230,000 annually. * Fully funded, long-term federal engagement supporting a major enterprise modernization initiative. * Opportunity to lead a high-impact Splunk-to-Elastic migration for a mission-critical DoD customer. * Relocation assistance available (approximately $5,000+) #LI-JN1 #LI-ONSITE

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