78 system developer jobs at 32 companies in Hillsboro, IL

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System Engineer (Unix)
Scott AFB, Illinois, United States
OnsiteFull Time
By Light Professional IT Services
By Light Professional IT Services: Provides IT systems engineering and cybersecurity solutions for federal agencies.
10+ YOEInstall, configure, and maintain UNIX/Linux and Microsoft server environments; troubleshoot systems; support production infrastructure; participate in on-call rotations; active DoD Secret clearance required.
Microsoft Windows Server 2012/2016, Azure, AWS, Linux, LDAP, Kerberos, Active Directory, SAN, NAS, Splunk, Cisco, McAfee, Solaris
1mo
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Information System Security Engineer
Scott Air Force Base, Illinois, United States
OnsiteFull Time
CSCI Consulting
CSCI Consulting: IT and financial management consulting for government and commercial clients.
3+ YOEActive Secret clearance, 3+ years cybersecurity engineering experience, hands-on STIG/SCAP/Tenable experience, CEH and DoD 8140.03M DCWF Basic Tier certification required, strong documentation and communication skills.
STIG Viewer, SCAP Compliance Checker, Tenable Security Center, Tenable Cloud Security, CyberArk Privileged Access Management (PAM)
1mo
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Software Developer - Grain Dryer Controls
Assumption, Illinois, United States
$70k-$90k/yr HybridFull Time
Grain & Protein Technologies
Grain & Protein Technologies: Designs and manufactures grain storage and protein production systems.
3+ YOEBachelor's in Computer Science, 3+ years developing and supporting distributed full-stack systems; backend, embedded, and AWS experience; familiarity with Python, Docker, Terraform, and embedded Linux.
Python, AWS, Docker, Terraform, Embedded Linux, ReactJS, TypeScript, PostgreSQL
2w
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Senior Software Engineer Applied AI
Springfield, Illinois, United States
RemoteFull Time
AMC Health
AMC Health: Provides remote patient monitoring and virtual care technology.
7+ YOE7+ years building and operating production backend systems, strong Python skills, production LLM/generative AI experience, distributed cloud systems experience, ML lifecycle proficiency, and disciplined data handling in regulated environments.
Python, AWS, LLMs, vector search, AI coding assistants
4d
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Senior Engineer-CAMPS Inc I
Scott AFB, Illinois, United States
OnsiteFull Time
OBXtek
OBXtek: Provides professional services and technical solutions to federal agencies.
Senior-level IT systems engineering experience, secret clearance, RMF knowledge, IA concepts, security assessments, system integration, cloud and Oracle migrations, and test development.
Oracle, Risk Management Framework (RMF), CMMI-Dev Level III, ITIL, Six Sigma, PMI, ISO
4d
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Missions Systems Software Engineer - Embedded (Associate, Experienced, Senior)
Berkeley, Missouri, United States
$99k-$217k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures commercial airplanes, defense systems, and space technology.
2+ YOE2+ years programming experience (Go, Java, C, C++, Rust, or Python); systems integration experience; strong verbal and written skills; ability to obtain U.S. security clearance.
Go, Java, C, C++, Rust, Python, Linux, VxWorks, Containers, Git, CI/CD, Cameo
3w
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Process Control Engineer
Granite City, Illinois, United States
$85k-$100k/yr OnsiteFull Time
United States Steel Corporation
United States Steel Corporation: Produces and sells flat-rolled and tubular steel products.
1+ YOEDevelop and maintain PLC-based process control systems, design and implement control upgrades, program and troubleshoot Level 1 systems, read P&ID and electrical schematics; 2-year technical degree or equivalent and 1+ year manufacturing experience.
Allen-Bradley Programmable Logic Controllers, Open VMS, Windows Server, SCADA, HMI
2mo
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Product Manager- Systems Engineer (Mid-Level & Lead)
Hazelwood or Saint Charles or Berkeley
$112k-$152k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
5+ YOEBachelor's degree in engineering or related field; experience in systems, software, hardware, or project engineering; knowledge of engineering disciplines; experience in product management or development.
3w
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Mechanical Engineer
St. Louis or Highland or Las Vegas
$90k-$130k/yr OnsiteFull Time
The Korte Company
The Korte Company: Design-build firm providing integrated construction and architectural services.
3+ YOE3+ years designing mechanical and plumbing systems, PE preferred, Bachelor\u000b's in engineering, Revit/Bluebeam/Microsoft Office experience, valid driver\u000b's license, ability to read drawings and coordinate MEP systems.
Revit, Bluebeam, Microsoft Office
2mo
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Power Systems Automation Engineer
Lakewood or Fairview Heights or Boerne
$84k-$144k/yr OnsiteFull Time
Schweitzer Engineering Laboratories
Schweitzer Engineering Laboratories: Manufactures digital systems that protect and automate power grids.
3+ YOEBachelor's in Electrical Engineering or Computer Science; 3+ years in power systems automation and communication; experience with utility/industrial power systems, SCADA and protocols.
SCADA, DNP3, Modbus, IEC 61850, Ethernet/IP, OPC UA, RTUs, RTACs, IEDs, SEL Relays, PLC, HMI, Serial Communications, Ethernet, Firewalls, Security Gateways, Terminal Servers, Cellular Routers, Managed Switches, SDN, IEC 61131-3, Structured Text, Wireshark
6d
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Engineer (Subtransmission Planning)
Collinsville or Belleville
$71k-$172k/yr OnsiteFull Time
Ameren
AmerenNYSE: AEE: Generates and distributes electric and natural gas utility services.
Bachelor of Science in Electrical Engineering (power) required; FE or PE preferred; experience with power system analysis and PSSE/PSCAD preferred; proficiency with Microsoft Word, Excel, Outlook, Visio; analytical and communication skills.
PSSE, PSCAD, Microsoft Word, Microsoft Excel, Microsoft Outlook, Microsoft Visio
2d
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Engineer - Unlicensed - 2026
Alton or United States
FieldFull Time
American Cruise Lines
American Cruise Lines: Operates small ship and river cruises within the United States.
Experience with diesel machinery, hydraulics, and electrical shipboard systems; TWIC card; ability to live onboard, work long hours, lift up to 50 lbs, pass pre-employment drug test, and perform emergency duties.
1mo
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Data Engineer 3 (Mid-Level, Enterprise Standards)
Scott Air Force Base, Illinois, United States
OnsiteFull Time
UNCOMN
UNCOMN: A technology and services firm delivering secure data, integration, and analytics solutions for public and private sector missions.
5+ YOEActive Secret clearance, 5+ years in data engineering/systems integration, experience developing enterprise data integration and governance, proficiency with multiple data tools (e.g., SQL, Python, Databricks), and ability to work on-site at Scott AFB.
SQL, Python, Spark, Databricks, Palantir Foundry/MSS, Advana, Qlik, Kibana, Tableau, Microsoft Power BI, Collibra, AWS Glue, Unity Catalog, REST APIs
2mo
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Mechanical Engineer III
Belleville or Newport or St Louis or Bellevue or Orlando or Milwaukee
$85k-$115k/yr OnsiteFull Time
RTM Engineering Consultants
RTM Engineering Consultants: Provides multidisciplinary engineering design and consulting services.
5+ YOE5+ years experience in mechanical systems design; HVAC; project management; AutoCAD and Revit; knowledge of building codes and standards.
AutoCAD, Revit, HVAC, Engineering Drafting Standards
1mo
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Building Engineer (2ND SHIFT)
St. Louis or Mascoutah
$62k-$75k/yr OnsiteFull Time
JLL
JLLNYSE: JLL: Global commercial real estate and investment management services.
5+ YOE5+ years maintaining commercial building systems; analyze and repair mechanical, electrical, plumbing, and HVAC systems; CMMS (Corrigo) experience; HS diploma/GED; physically able to access equipment; EPA 608 and BAS experience preferred.
CMMS, Corrigo, Building Automation Systems (BAS)
1mo
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Experienced Systems Project Engineer
Berkeley, Missouri, United States
$112k-$152k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designing and manufacturing commercial aircraft and defense systems.
4+ YOEBachelor's in engineering or related field, 4+ years relevant experience, project planning/management experience, active U.S. Secret security clearance and U.S. Person status required; experience with mission systems, Agile, export compliance, and Microsoft Office is beneficial.
Microsoft Outlook, Microsoft PowerPoint, Microsoft Excel, Microsoft Word
3d
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Systems Engineer
Scott Air Force Base, Illinois, United States
$40k-$80k/yr OnsiteFull Time
SAIC
SAICNYSE: SAIC: Provides engineering, IT, and mission support services to government.
4+ YOEBA/BS+4yrs, DoD Secret clearance, IAT Level II certification (e.g., Security+ CE), CE certification in technical area, Windows Server 2012/2016, Azure or AWS, Linux, LDAP/Kerberos/Active Directory, SAN/NAS, on-call availability.
Splunk, Cisco, McAfee, Microsoft Windows Server 2012, Microsoft Windows Server 2016, Azure, AWS, Linux, Solaris, LDAP, Kerberos, Active Directory, SAN, NAS
3d
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Systems Engineer
Scott AFB, Illinois, United States
OnsiteFull Time
SAIC
SAICNASDAQ: SAIC: Provides government and defense clients with technology and engineering services.
4+ YOEBA/BS+4 years experience, DoD Secret clearance, IAT Level II certification (eg Security+ CE, CySA+, GICSP, GSEC, CND, SSCP), CE certification for network or OS area, Microsoft Windows Server 2012/2016, Azure/AWS, Linux, production environment experience, on-call availability, strong troubleshooting and communication skills.
Microsoft Windows Server 2012, Microsoft Windows Server 2016, Azure, AWS, Linux, UNIX, RedHat, Splunk, Cisco, McAfee, LDAP, Kerberos, Active Directory, SAN, NAS
1mo
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Electrical Project Engineer
Lisle or Normal or Peoria or Champaign or Springfield or St. Louis
$99k-$149k/yr HybridFull Time
Farnsworth Group
Farnsworth Group: A nationally recognized architectural, engineering, and surveying firm providing design and consulting services.
8+ YOEBachelor's in electrical/architectural engineering, PE required, typically 8+ years electrical building systems design experience, proficiency in Revit and AutoCAD, strong technical leadership and client coordination skills.
Revit, AutoCAD, Bluebeam
3w
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Business Process Engineer
United States or O'Fallon
$68k-$144k/yr RemoteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
5+ YOEBachelor's degree in related field, 5+ years BPR/business analysis experience, 5+ years working with USTRANSCOM/defense transportation systems, knowledge of DOTmLPF-P, strong analytical and communication skills, US citizenship and ability to pass Tier 1 (Secret) investigation.
JTMS, SAP, ERP, BPMN 2.0, SAFe, DOTmLPF-P

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