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Senior Unix Engineer Jobs in Belleville, IL (NOW HIRING)

Elite Technical

Sr. Elastic Engineer

Scott Air Force Base, IL · On-site

$110K - $151K/yr

Sr. Elastic Engineer (Scott AFB) We are seeking a Sr. Elastic Engineer to join our clients Federal ... Unix, networking, and cloud platform knowledge (AWS, Azure, Google Cloud Platform). - Ability to ...

ECS

Sr. Elastic Engineer

Scott Air Force Base, IL · On-site

$100K - $138K/yr

ECS is seeking a Sr. Elastic Engineer to work in our Scott AFB, IL office. Are you passionate about ... Strong Linux/Unix, networking, and cloud platform knowledge (AWS, Azure, GCP). * Ability to mentor ...

Navtech, Inc.

Sr AWS Developer

Saint Louis, MO · On-site

Job Title: Sr AWS Developer Location: St Louis, MO - Remote Start Duration: 6+ Months Contract then ... Good background in Linux/Unix administration and Ability to spin off new instances. * VPC ...

JNIT INC

IT EDI Developer - Senior

Saint Louis, MO · On-site

Express Scripts POSITION SUMMARY : B2B/EDI engineer responsible for detail design, development ... QUALIFICATIONS • Advanced WTX/Mercator programming skills. • Advanced UNIX/Linux skills. • ...

JNIT INC

IT EDI Developer - Senior

Saint Louis, MO · On-site

Express Scripts POSITION SUMMARY : B2B/EDI engineer responsible for detail design, development ... Advanced UNIX/Linux skills. Advanced knowledge of client integration (B2B) concepts and Electronic ...

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All JobsUnix Engineer JobsSenior Unix Engineer JobsSenior Unix Engineer Jobs in Belleville, IL

Senior Unix Engineer information

See Belleville, IL salary details

$57.8K

$122.9K

$178.2K

How much do senior unix engineer jobs pay per year?

As of Aug 7, 2026, the average yearly pay for senior unix engineer in Belleville, IL is $122,925.00, according to ZipRecruiter salary data. Most workers in this role earn between $101,500.00 and $139,400.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a senior Unix engineer?

To thrive as a Senior Unix Engineer, you need deep expertise in Unix/Linux system administration, scripting, troubleshooting, and a relevant degree or equivalent experience. Familiarity with automation tools (such as Ansible or Puppet), shell scripting languages (like Bash or Perl), and certifications like RHCE or CompTIA Linux+ is highly valued. Strong problem-solving skills, effective communication, and the ability to mentor junior staff help set top performers apart in this role. These skills ensure reliable systems, smooth operations, and robust support for complex enterprise environments.

What does a senior Unix engineer do?

A Senior Unix Engineer is responsible for designing, implementing, and maintaining Unix-based systems within an organization. They handle advanced troubleshooting, system performance tuning, security configurations, and ensure the reliability and scalability of Unix infrastructure. In addition, they often mentor junior engineers, develop automation scripts, and collaborate with other IT teams to support business operations. Their expertise is crucial for managing large-scale, mission-critical environments.

What is the difference between Senior Unix Engineer vs System Administrator?

AspectSenior Unix EngineerSystem Administrator
CredentialsBachelor's in Computer Science, Unix/Linux certifications (e.g., RHCE, LPIC)Bachelor's in IT or related field, Linux/Unix certifications often preferred
Work EnvironmentDesigning, implementing, and maintaining Unix systems, often in enterprise environmentsManaging daily system operations, troubleshooting, and user support
Industry UsageTech, finance, healthcare, and large enterprisesVaries across industries, including small to large organizations
Search & Comparison IntentFocus on advanced Unix skills and system designFocus on operational support and system maintenance

The main difference is that Senior Unix Engineers focus on designing and optimizing Unix systems, while System Administrators handle daily operations and support. Both roles require similar certifications and work in related environments, but their responsibilities differ in scope and complexity.

What are some of the most common challenges faced by senior Unix engineers in a large enterprise environment?

Senior Unix Engineers in large enterprises often face challenges related to managing complex, heterogeneous server environments and ensuring high availability. Balancing routine maintenance, security patching, and system upgrades with the need to minimize downtime can be demanding. Additionally, staying up to date with evolving technologies and scripting languages, while coordinating with cross-functional teams like network, storage, and application groups, requires strong communication and problem-solving skills.
What are popular job titles related to Senior Unix Engineer jobs in Belleville, IL? For Senior Unix Engineer jobs in Belleville, IL, the most frequently searched job titles are:
What cities near Belleville, IL are hiring for Senior Unix Engineer jobs? Cities near Belleville, IL with the most Senior Unix Engineer job openings:
Senior Unix Engineer jobs near you
Infographic showing various Senior Unix Engineer job openings in Belleville, IL as of June 2026, with employment types broken down into 95% Full Time, 1% Part Time, and 4% Contract. Highlights an 88% Physical, 4% Hybrid, and 8% Remote job distribution, with an average salary of $122,925 per year, or $59.1 per hour.

Sr. Elastic Engineer

Elite Technical

Scott Air Force Base, IL • On-site

$110K - $151K/yr

Other

Re-posted 16 days ago

Job description

Sr. Elastic Engineer (Scott AFB)

We are seeking a Sr. Elastic Engineer to join our clients Federal team. This position is 100% onsite at Scott AFB. Relocation assistance is available for this long term FTE opportunity with our client.
We are seeking candidates with hands-on experience with Elastic Stack and enjoys designing, coding, and deploying complex systems. You will collaborate with engineering, DevOps, cloud, and client teams to deliver resilient, high-performance Elastic solutions while maintaining visibility into system health and operational workflows.
Key Responsibilities:
- Design, deploy, and maintain Elastic Stack environments, including Elasticsearch, Kibana, Logstash, Beats, and Fleet.
- Build and optimize ingestion pipelines, index strategies, search queries, dashboards, and automation workflows.
- Write scripts, automation, and integrations (Python, PowerShell, Bash, etc.) to streamline operations, data processing, and monitoring.
- Deploy Elastic across platforms, including on-premises, public cloud (AWS, Azure, Google Cloud Platform), GovCloud, and containerized environments (Kubernetes, Docker, OpenShift).
- Leverage automation and orchestration tools such as Terraform, Ansible, CI/CD pipelines, and Docker to manage deployments and operational tasks.
- Integrate Elastic with enterprise tools such as SIEMs, Splunk, CrowdStrike, and other telemetry sources.
- Monitor system health, troubleshoot performance issues, and optimize for reliability and scalability.
- Lead design reviews, provide guidance on Elastic best practices, and support knowledge sharing across teams.
- Maintain documentation for architectures, deployment patterns, runbooks, and operational best practices.
- Stay current with Elastic features, certifications, and emerging platform capabilities.

<>Requirementls

- Must have a Secret Clearance
- Elastic Certification is a big plus
- Must have tech stack: Elastic / ECK / Kubernetes - Would consider solid Elastic and Kubernetes exp that doesn''t have ECK
- Deep, hands-on expertise with Elastic Stack (Elasticsearch, Kibana, Logstash, Beats, Fleet).
- Strong scripting and automation skills (Python, PowerShell, Bash, etc.).
- Solid understanding of observability, logging, metrics, and distributed systems.
- Experience designing, deploying, and optimizing production-scale Elastic environments.
- Strong Linux/Unix, networking, and cloud platform knowledge (AWS, Azure, Google Cloud Platform).
- Ability to mentor, guide, and influence engineering teams on Elastic best practices.
- Prior experience in DevOps, Site Reliability Engineering, or cloud platform roles is a plus.

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