18 junior platform engineer jobs at 12 companies in O'Fallon, IL
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Geospatial CI/CD & Platform Automation Engineer – Multiple Positions at Junior/Mid/Senior Levels
Sun Prairie or St. Louis or St. Charles
OnsiteFull Time
1+ YOEUS citizen with active/current Top Secret/SCI clearance, bachelor’s in CS/engineering, 1+ years CI/CD/platform automation experience, hands-on with GitHub Actions/Azure DevOps/Jenkins, Docker, Python, IaC (Ansible/Terraform/AWS CDK), Linux, and cloud (AWS/Azure).
GitHub Actions, Azure DevOps, Jenkins, Docker, Python, JavaScript, Conda, ArcGIS API, SBOM, Ansible, AWS CDK, Terraform, YAML, Rust, Kubernetes, SAST, DAST, AWS, Azure, Linux
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Geospatial CI/CD & Platform Automation Engineer – Multiple Positions at Junior/Mid/Senior Levels
Springfield or Vienna or St. Louis or Sun Prairie
OnsiteFull Time
1+ YOEUS citizen with active Top Secret/SCI clearance, bachelor’s in CS/Engineering (master’s preferred),1+ years DevOps/CI/CD experience, CI/CD tools, Python/JS scripting, IaC, Docker, Linux, cloud exposure.
GitHub Actions, Azure DevOps, Jenkins, GitLab CI, Python, JavaScript, Ansible, AWS CDK, Terraform, Docker, Conda, ArcGIS API, Rust, Kubernetes, AWS, Azure, S3, SBOM
1mo
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Electronic Warfare Engineer
Hazelwood, Missouri, United States
$92k-$152k/yr OnsiteFull Time
2+ YOEBachelor's in engineering or related field, 2+ years (Level 2) or 5+ years (Level 3) related experience, active U.S. Secret security clearance, experience with requirements, modeling, simulation, testing, and DoD platform integration.
Cameo, Agile, Scrum
5d
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Enterprise Voice Engineer
Scott Air Force Base, Illinois, United States
OnsiteFull Time
2+ YOEActive U.S. citizenship and Secret clearance, DoD-8570 IAT Level 2 (Security+ CE or equivalent), experience with Cisco/Avaya/Oracle voice platforms, SIP expertise, and 2–8 years of relevant experience depending on degree.
Cisco Unified Communications Manager (CUCM), Cisco Unity, Cisco Unified Border Element (CUBE), Oracle Session Border Controller (SBC), Avaya Aura Application Server, Cisco, Juniper, Oracle SBC, SRTP, BGP
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Enterprise Voice Engineer II
Scott Air Force Base, Illinois, United States
$71k/yr OnsiteFull Time
2+ YOEActive TS/SCI clearance, DoD 8750 IAT Level II or Security+ CE, BS (2-4 yrs) or MS (alternative), experience with Cisco/Avaya/Oracle voice platforms, SIP signaling, routing/switching and large-scale voice troubleshooting.
Cisco Unified Communications Manager (CUCM), Cisco Unity, Cisco Unified Border Element (CUBE), Oracle Session Border Controller (SBC), Avaya Aura Application Server, Cisco, Juniper, SIP, Secure Real-Time Transport Protocol (SRTP), G.711, G.729, DTMF, IPSec, MPLS, BGP, QoS
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Software Development Engineer II – CI/CD & Platform Automation (Mission-Focused)
Redlands or St. Louis or Vienna
$97k-$162k/yr OnsiteFull Time
2+ YOE2+ years DevOps/CI-CD/platform automation experience; hands-on with CI/CD pipelines, Docker, Python/JavaScript, IaC (Terraform/AWS CDK/Ansible), cloud (AWS/Azure); US citizenship and active Top Secret/SCI clearance required; Bachelor's in a STEM field.
GitHub Actions, Microsoft Azure DevOps, GitLab CI, Jenkins, YAML, Docker, Conda, Python, JavaScript, Rust, Ansible, AWS CDK, Terraform, Kubernetes, Amazon S3, Microsoft Azure Blob Storage, Software Bill of Materials (SBOM), SAST, DAST
2mo
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Software Development Engineer II- CI/CD & Platform Automation Engineer (DevOps)
St. Louis or Redlands or Vienna
$97k-$162k/yr OnsiteFull Time
2+ YOE2+ years DevOps/CI-CD experience; design and maintain CI/CD pipelines, containerization (Docker), Python/JavaScript scripting, IaC (Terraform/Ansible/AWS CDK), cloud (AWS/Azure), secure build practices, and active Top Secret clearance with SCI eligibility; Bachelor's in STEM.
GitHub Actions, Azure DevOps, Azure Pipelines, GitLab CI, Jenkins, Docker, Conda, Python, JavaScript, YAML, Ansible, AWS CDK, Terraform, Kubernetes, S3, Blob Storage, ArcGIS API, SBOM, SAST, DAST
2mo
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Software Development Engineer II- CI/CD & Platform Automation Engineer (DevOps)
Redlands or St. Louis or Vienna
$97k-$162k/yr OnsiteFull Time
2+ YOE2+ years DevOps/CI-CD experience; hands-on GitHub Actions/Azure DevOps/Jenkins; Python/JavaScript scripting; Docker, Conda, Ansible, Terraform/AWS CDK; AWS/Azure exposure; US citizenship with active/top secret (TS/SCI) clearance; bachelor\u0002s in STEM.
GitHub Actions, Azure DevOps, Azure Pipelines, GitLab CI, Jenkins, Docker, Conda, Python, JavaScript, Rust, Ansible, AWS CDK, Terraform, S3, Blob Storage, Kubernetes, YAML, ArcGIS API, SBOMs (software Bill of Materials), SAST/DAST
2mo
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Software Development Engineer II- CI/CD & Platform Automation Engineer (DevOps)
Redlands or St. Louis or Vienna
$97k-$162k/yr OnsiteFull Time
2+ YOERequires 2+ years DevOps/CI-CD experience, hands-on pipeline design (GitHub Actions/Azure Pipelines/Jenkins), Docker, Python/JavaScript, IaC (Terraform/Ansible/AWS CDK), cloud (AWS/Azure), SBOM and secure build practices, US citizenship with Top Secret/SCI clearance, Bachelor's in STEM.
GitHub Actions, Microsoft Azure DevOps, Jenkins, Microsoft Azure Pipelines, GitLab CI, Docker, Python, JavaScript, Rust, Conda, YAML, Ansible, AWS CDK, Terraform, Kubernetes, S3, Microsoft Azure Blob Storage, SBOM, SAST, DAST, ArcGIS API, AWS, Microsoft Azure
1mo
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SailPoint Engineer
Scott Air Force Base, Illinois, United States
$87k-$198k/yr HybridFull Time
Experience with SailPoint and IAM platforms, identity lifecycle implementation and integrations (ServiceNow, Workday, SAP, Oracle, AWS/Azure), LDAP/Active Directory/Azure AD knowledge, ability to mentor junior staff, Secret clearance, HS diploma/GED.
SailPoint, SailPoint IIQ, Ping, Virtru, ServiceNow, Workday, SAP, Oracle, AWS, Azure, LDAP, Active Directory, Azure AD, CyberArk, BeyondTrust
4w
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Data Engineer
Carmel or St. Louis
HybridFull Time
2+ YOE2+ years building data engineering or data platform solutions; experience with Python/Java/Scala, SQL, Spark/Databricks/Snowflake/Redshift/Azure Fabric/AWS Glue/Azure Data Factory, and AWS or Azure; strong collaboration and communication skills.
Python, Java, Scala, SQL, Spark, Databricks, Snowflake, Redshift, Azure Fabric, AWS Glue, Azure Data Factory, AWS, Azure, CI/CD, infrastructure-as-code, Claude Code, Cursor, Kiro, NoSQL
1mo
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Software Development Engineer II – CI/CD & Platform Automation (Mission-Focused)
Redlands or St. Louis or Vienna or Washington
$97k-$162k/yr OnsiteFull Time
2+ YOE2+ years DevOps/CI-CD experience; hands-on with GitHub Actions/GitLab CI/Azure Pipelines/Jenkins, Docker, Python/JavaScript, IaC (Ansible/AWS CDK/Terraform), cloud (AWS/Azure); US citizenship and active Top Secret/SCI clearance; Bachelor's in STEM.
GitHub Actions, GitLab CI, Microsoft Azure DevOps, Microsoft Azure Pipelines, Jenkins, YAML, Python, JavaScript, Docker, Conda, Rust, Ansible, AWS CDK, Terraform, SBOM, S3, Blob Storage, Kubernetes, SAST, DAST, ArcGIS API
1mo
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Software Development Engineer II – CI/CD & Platform Automation (Mission-Focused)
Redlands or St. Louis or Vienna
$97k-$162k/yr OnsiteFull Time
2+ YOE2+ years DevOps/CI/CD experience; hands-on with GitHub Actions/Azure DevOps/Jenkins, Docker, Python; experience with IaC (Terraform, AWS CDK, Ansible); active Top Secret/SCI clearance and US citizenship; bachelor’s degree in STEM.
GitHub Actions, Azure DevOps, Azure Pipelines, GitLab CI, Jenkins, Docker, YAML, Python, JavaScript, Conda, Ansible, AWS CDK, Terraform, ArcGIS API, Kubernetes, SBOM (software Bill of Materials), SAST, DAST, S3, Blob Storage, Rust
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Senior Data Solution Architect/Engineer
Gray Summit, Missouri, United States
$78k-$103k/yr HybridFull Time
2+ YOEMaster's in Computer Science/Engineering/Data Science and 2+ years as a data scientist/engineer; experience with Python, R, SQL/Scala, Power platform, Azure, VB6, SSAS/SSIS/SSRS, and data pipeline/ML model development.
ETL tools, SQL Databases, Data Warehousing, Data Modeling, Python, R, SQL, Scala, Power BI, Power Automate, Power Apps, Power Pivot, Microsoft Fabric, VB6, Azure Functions, Data Lake, APIs, SSAS, SSIS, SSRS, T-SQL
5d
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Construction Engineer II
New Florence or St. Louis
OnsiteFull Time
1+ YOEBachelor’s in Construction Management (or equivalent),1+ years construction experience with trade contractor/GC,OSHA 10 required (OSHA 30 preferred),self-perform and estimating experience preferred,proficient in Microsoft Office and CM platforms.
CMiC, Bluebeam, Procore, Microsoft Office
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Enterprise Voice Engineer
Scott Air Force Base, Illinois, United States
$52k-$56k/yr OnsiteFull Time
2+ YOEU.S. citizen with active Top Secret/SCI clearance; BS degree with 2+ years relevant experience (or MS with less); DoD 8750 IAT II or Security+ CE; experience with Cisco/Avaya/Oracle voice platforms, SIP, routing/switching, and voice fault analysis.
Cisco Unified Communications Manager (CUCM), Cisco Unity, Cisco Unified Border Element (CUBE), Oracle Session Border Controller (SBC), Avaya Aura Application Server, Cisco, Juniper, SIP, SRTP, G.711, G.729, DTMF, IPSec, MPLS, BGP, QoS
1d
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Crypto Requirements Analyst - Cyber Capability Center - TS/SCI/SAP Eligibility
Scott Air Force Base, Illinois, United States
OnsiteFull Time
2+ YOETS/SCI/SAP eligibility, US citizenship, 2+ years cryptographic key management and COMSEC experience including KMI, staff-level coordination experience, familiarity with Envision and Microsoft 365 Power Platforms.
Key Management Infrastructure (KMI), Envision, Microsoft 365 Power Platforms, Task Management Tool (TMT)
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Intern - AI/ML Data Engineering - Onsite - St. Louis
Saint Louis, Missouri, United States
OnsitePart Time, Internship
Currently pursuing a Bachelor's or Master's in CS, Data Science, Engineering, Math or related; basic programming (Python preferred); foundational statistics/ML and data analysis knowledge; exposure to SQL, Python libraries, cloud platforms, and Git; ≤2 years professional experience preferred.
Python, Pandas, NumPy, scikit-learn, PySpark, SQL, Microsoft Azure, Copilot Agents, Microsoft Power BI, Tableau, Git
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