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Jobs in O'Fallon, United States

5 open roles read nightly from companies’ own hiring pages. Each one links to the original ad.

Jobs in O'Fallon at a glance

Open roles
5
Remote
0%
Posted in the last 30 days
0
Advertised pay, middle half (all of Illinois)
$78K – $186Kmedian $133K

From the 4,293 jobs in Illinois that state yearly pay in USD: the top of each advertised range. Updated nightly.

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1–5 of 5 jobs

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United States ×Illinois ×O'Fallon ×Clear all

  • Data Engineer (Various Locations)

    8 weeks ago

    Agile Defense · Peterson Space Force Base, Colorado, United States +11

    On-siteFull-timeMid level$135K – $165K a yearData & AI

    Supports the development and maintenance of secure data pipelines, ETL/ELT workflows, and analytics-ready datasets. Works with data scientists, engineers, and mission stakeholders to process structured and unstructured data using Databricks, Spark, Palantir Foundry, Maven Smart…

  • MSS Developers (Various Locations)

    2 months ago

    Agile Defense · Peterson Space Force Base, Colorado, United States +11

    On-siteFull-timeMid level$135K – $165K a yearData & AI

    Build and maintain operator-facing dashboards, applications, and decision surfaces aligned to J7 mission workflows; Create intuitive, self-service capabilities that empower operators to explore data independently; Build automated workflows that deliver timely insights to…

  • IT Audit Analyst

    2 months ago

    Significance, Inc. · O'Fallon, Illinois, United States

    On-siteEntry level$48K – $56K a yearFinance

    At Significance, we believe the best results come from investing in great people. As a woman-owned consulting firm supporting federal civilian and Department of Defense customers, we bring together talented professionals who are passionate about solving complex challenges and…

  • Internal Controls and Audit Support Analyst

    2 months ago

    Significance, Inc. · O'Fallon, Illinois, United States

    On-siteEntry level$60K – $68K a yearCustomer success & support

    At Significance, we believe the best results come from investing in great people. As a woman-owned consulting firm supporting federal civilian and Department of Defense customers, we bring together talented professionals who are passionate about solving complex challenges and…

  • Strategy Analyst

    20 months ago

    NextGen Federal Systems · O'Fallon, Illinois, United States

    On-siteFull-timeOperations

    Provide functional, technical, and analytical support to develop the AMC/MAF operational mission and C2-focused vision.; Provide synchronization, integration, 618 AOC and Air Force Forces (AFFOR)functional area management support, and interoperability of MAF-centric and AMC C2…

Updated 07 Nov 2026 10:21 UTC from the OptiTalent job library.