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Tier Three Engineer Jobs in Missouri (NOW HIRING)

GRVTY

Senior VDI Engineer

Arnold, MO · On-site

$92K - $126K/yr

In addition to architecting and designing, the VDI Engineer will provide TIER 3/4 support to system administrators in order to resolve VDI issues. * Provide guidance on optimization of desktops for ...

The Structures Company

Systems Engineer 3

Berkeley, MO · On-site

$78/hr

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 ...

Advantage Tech

Sr. Infrastructure Engineer

Kansas City, MO · On-site

$105K - $143K/yr

Position Summary The Network Engineer is responsible for designing, maintaining, and supporting the ... Provide Tier 3 support for complex infrastructure and network incidents. Security & Compliance

MetroStar

$150K - $175K/yr

The Sr. Software Engineer III designs, develops, tests, and maintains enterprise software ... Must possess an IT-II (Non-Critical Sensitive) security clearance or Tier 3 (T3) background ...

GRVTY

Senior VDI Engineer with Security Clearance

Arnold, MO · On-site

$92K - $126K/yr

In addition to architecting and designing, the VDI Engineer will provide TIER 3/4 support to system administrators in order to resolve VDI issues. * Provide guidance on optimization of desktops for ...

GRVTY

Senior VDI Engineer with Security Clearance

Arnold, MO · On-site

$92K - $126K/yr

In addition to architecting and designing, the VDI Engineer will provide TIER 3/4 support to system administrators in order to resolve VDI issues. * Provide guidance on optimization of desktops for ...

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Showing results 21-40

All JobsTier Three Engineer JobsTier Three Engineer Jobs in Missouri

Tier Three Engineer information

What is the difference between Tier Three Engineer vs Tier Two Engineer?

AspectTier Three EngineerTier Two Engineer
CertificationsAdvanced certifications (e.g., Cisco CCNP, CompTIA Network+)Entry to mid-level certifications (e.g., Cisco CCNA, CompTIA A+)
Work EnvironmentComplex troubleshooting, system design, and advanced supportRoutine maintenance, basic troubleshooting, and user support
Employer & Industry UsageIT service providers, large enterprises, network infrastructureSmall to medium businesses, internal IT teams
Search & Comparison IntentUnderstanding advanced support roles, career progressionBasic support roles, entry-level positions

In summary, a Tier Three Engineer handles more complex issues, requires advanced certifications, and works in larger, more technical environments compared to a Tier Two Engineer, who focuses on routine support and basic troubleshooting.

What is a Tier Three Engineer?

A Tier Three Engineer is a senior technical support professional responsible for resolving complex issues that cannot be handled by lower support levels. They often have advanced knowledge of systems, networks, or software, and may work with specialized tools or certifications to diagnose and fix critical problems. This role typically requires strong problem-solving skills and experience in technical environments.
What are popular job titles related to Tier Three Engineer jobs in Missouri? For Tier Three Engineer jobs in Missouri, the most frequently searched job titles are:
What job categories do people searching Tier Three Engineer jobs in Missouri look for? The top searched job categories for Tier Three Engineer jobs in Missouri are:
What cities in Missouri are hiring for Tier Three Engineer jobs? Cities in Missouri with the most Tier Three Engineer job openings:
Tier Three Engineer jobs near you
Infographic showing various Tier Three Engineer job openings in Missouri as of August 2026, with employment types broken down into 1% As Needed, 86% Full Time, 10% Part Time, and 3% Contract. Highlights an 94% Physical, 3% Hybrid, and 3% Remote job distribution.

Software Developer 700

Freedom Technology Solutions Group

Saint Louis, MO • On-site

Full-time

Medical, Life, Retirement, PTO

Re-posted 6 days ago

Job description

Freedom Technology Solutions Group is seeking a Software Developer to add to our Platform Mission Applications Team. The Platform Mission Applications team members are responsible for integrating, deploying and ensuring Continuous Delivery (CD) of Mission Partner Mission Applications across all the fabrics utilizing tools such as Istio, Kiali, K9s, Grafana, Keycloak, Gitlab, Kustomize, Helm and ArgoCD. We develop deployment and integration manifests used to create required kubernetes objects, resources, policies, and components in order to deploy Mission Partners applications into our ecosystem.
What You'll Do
The Platform Mission Applications team members are responsible for integrating, deploying and ensuring Continuous Delivery (CD) of Mission Partner Mission Applications across all the fabrics utilizing tools such as Istio, Kiali, K9s, Grafana, Keycloak, Gitlab, Kustomize, Helm and ArgoCD. We develop deployment and integration manifests used to create required kubernetes objects, resources, policies, and components in order to deploy Mission Partners applications into our ecosystem.
Platform Mission Apps Development & Engineering (MADE): This team focusses on automation development and sustainment (i.e. GitLab Mission Partner self service deployment pipelines, and Infrastructure as Code). MADE also develops and maintains the Mission Apps Padawan site. Platform Mission Apps Customer Empowerment (MACE): This team focuses on Mission Partner onboarding (e.g. mission manifest project development/integration, mission-bootstrap integration), configuration management sustainment, and catalog sustainment.
Platform Mission Apps Tier 3 (MAT3, read "MATE"): This team focuses on Mission Partner Tier 3 support to include SOP/troubleshooting guide sustainment and sustaining Mission Applications infrastructure (e.g. mTLS gateways, third party tools, and Istio/Kyverno configurations and policies).
Key Technologies:
  • Linux
  • Containerization (Docker, Kubernetes, ...)
  • AWS Services
  • GitLab
  • Data Types: Structured and Unstructured, Parquet, JSON, XML, etc.
  • Prometheus, Grafana, ELK stack
  • Kustomize and Helm

Required Qualifications:
  • IAT or IAM Level II DoD 8570 Certification
  • Active TS/SCI clearance
  • Ability to access secure facilities with SIPR & JWICS
  • Experience with microservice orchestration, with a heavy emphasis on Kubernetes
  • Experience with Kustomize and Helm
  • Experience with Linux
  • Experience with GitOps and CI/CD, with a heavy emphasis on Gitlab
  • 5+ years of experience in application deployment and release management.
  • 3+ years of experience with containerization technologies (Docker, Kubernetes, OpenShift).
  • 3+ years of experience with CI/CD tools (Jenkins, GitLab CI, CircleCI, ArgoCD).
  • Experience with infrastructure as Code (IaC) using Terraform, Ansible, or similar tools.
  • Experience with monitoring and logging tools (Prometheus, Grafana, ELK stack).
  • Proficiency in at least one scripting language (Python, Bash).
  • Strong understanding of application deployment strategies (blue/green, canary).

Desired Qualifications:
  • Experience with advanced application and network troubleshooting, database administration, and PKI management
  • Experience with cloud providers, with an emphasis on AWS services.
  • Experience with Agile Methodologies.
  • Experience with various forms of automation, including simple batch scripting, pipeline automation, Kubernetes operators, and infrastructure-as-code (including terraform and ansible)
  • Experience with cloud-native application architectures.
  • Experience with service mesh technologies (Istio, Linkerd).
  • Experience with security scanning and vulnerability management tools.
  • Experience with platform engineering concepts.

What's in It for You?
Flexible work environment
A team mentality - work with friendly, like-minded professionals
Work with innovative, cutting edge technologies
Enjoy extremely competitive compensation and benefits
A work-life balance you can count on
Opportunities to grow and advance your career on our dime
The Benefits You Get with Freedom
Amazing benefits including matching 401k, fully paid medical, and more
Generous paid time off - including paid site closure days
Competitive salary offerings
Paid training and tuition reimbursement
Referral bonuses
Fully paid life and disability
Annual logo wear allowance
Company sponsored events (game nights, holiday party, summer party, happy hours)
Interested in learning more about Freedom and our culture? Contact us today! We're constantly hosting hiring events in our office and elsewhere, to help you get a sense of what life is like at Freedom before joining the team.
As an Equal Opportunity Employer, we do not discriminate on the basis of race, color, religion, sex, age, marital status, disability or veteran status
Applicant Federal & E-Verify Postings
VEVRAA Federal Contractor
Accessibility: If you need an accommodation as part of the employment process, please contact Human Resources at
Phone: 410-290-9035
Email: recruiting@goftsg.com
Equal Opportunity Employer, including disabled and veterans.
If you want to view the EEO Law poster, please choose your language: English - Spanish - Arabic - Chinese
If you want to view the EEO Law Supplement poster, please choose your language: English - Spanish - Chinese
If you want to view the Pay Transparency Policy Statement, please click the link: English

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