14 senior software engineer jobs at 9 companies in Freeport, IL

3w
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Principal Engineer, Software Engineering
Rockford, Illinois, United States
$127k-$205k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
8+ YOE3+ MgmtBachelor's in CS/EE or related with 8+ years (or Master's with 5+ years); 5+ years embedded C; 3+ years leading 10–20 person teams; 3+ years DO-178B/C and generator/bus power control software experience; U.S. work authorization required without sponsorship.
embedded C, DO-178B/C
1mo
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Software Engineer – Test Equipment (Onsite)
Rockford, Illinois, United States
$87k-$165k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Provides advanced aerospace and defense systems and services.
5+ YOEU.S. citizenship required. STEM degree (Bachelors with 5+ yrs or Advanced Degree with 3+ yrs). Experience developing software that interfaces with hardware-based test/HIL/ATE systems; Python, C++, TCL/Bash, Linux/Windows; configuration management and OOD.
Python, TCL, C++, Bash, LabVIEW, Linux, Windows, Automatic Test Equipment (ATE), Hardware-in-the-Loop (HIL)
2mo
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Software Developer 2
Monroe, Wisconsin, United States
OnsiteFull Time
Colony Brands
Colony Brands: Operates multi-channel retail brands and catalog sales for consumer products.
5+ YOEBS or equivalent, 5+ years software development experience, 3+ years with .NET Core/C#, REST APIs, microservices, MySQL/Dynamo, Azure DevOps, Git, AWS; strong problem solving, Agile collaboration, and mentoring ability.
.NET Core, C#, RESTful API, Python, microservices, MySQL, Dynamo, Azure DevOps, Azure Pipelines, Git, AWS, CI/CD
4d
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Principal Engineer, Software Engineering
Rockford, Illinois, United States
$135k-$205k/yr HybridFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
5+ YOE3+ MgmtBachelor's degree +8 years (or master’s +5) in Computer Science/Electrical Engineering, 5+ years embedded C, 3+ years leading teams, DO-178C experience, US work authorization without sponsorship.
C, DO-178C
1w
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Principal Engineer, Software Engineering
Rockford, Illinois, United States
$135k-$205k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
8+ YOEBachelor's in CS/EE/EElec and 8+ years (or Master's and 5+ years); 5+ years embedded C; 3+ years DO-178C; software for generator/bus power control; authorized to work in U.S. without sponsorship.
embedded C, DO-178C
2w
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Senior Engineer
Beloit, Wisconsin, United States
$115-$130/hr OnsiteFull Time
Mid-States Concrete Industries
Mid-States Concrete Industries: Produces and installs precast concrete building systems.
3+ YOEBSc in Civil Engineering, ability to obtain EIT within 12 months, 3+ years precast/prestressed concrete design experience, knowledge of ASCE/ACI/IBC/PCI, Microsoft Office, structural analysis software.
Microsoft Word, Microsoft Excel, Microsoft Outlook
1mo
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Senior Web/App Engineer
Janesville, Wisconsin, United States
$118k-$142k/yr OnsiteFull Time
Blain's Farm & Fleet
Blain's Farm & Fleet: Retailer of farm, home, automotive, and outdoor goods.
5+ YOE5+ years software development experience; proficiency in Java, C#, Python, JavaScript; strong system architecture, design patterns, data modeling, cloud and application security knowledge; bachelor's in CS/Engineering preferred; experience with SaaS platforms (Adobe, Oracle) preferred.
Java, C#, Python, JavaScript, Adobe, Oracle
1mo
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Software V&V Lead (Verification & Validation Lead)
Rockford, Illinois, United States
OnsiteFull Time
BizTech Fusion
BizTech Fusion: An IT professional services and consulting firm delivering technology solutions to public and private sector clients.
10+ YOE10 years' relevant experience; aerospace domain mandatory; expertise in building instrumentation, SCA and coverage analysis; 6+ years RTRT and DO-178B/C experience; proficiency in C and Ada; experience with DOORS, Polarion, Synergy, SVN.
SCA (Structural Coverage Analysis), RTRT, DO-178B/C, C, Ada, DOORS, Synergy CM/Change, Polarion, SVN
2w
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Manager, Facilities & Software Validations
Rockford, Illinois, United States
$109k-$123k/yr OnsiteFull Time
PCI Pharma Services
PCI Pharma Services: Integrated pharmaceutical development, manufacturing, and global packaging services.
6+ YOEBachelor's degree in engineering/life sciences/computer science, 6+ years validation experience in regulated industry, CSV/GAMP5 knowledge, supervisory experience, strong validation lifecycle and regulatory knowledge.
Computer System Validation (CSV), GAMP 5
3d
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Senior Truss & Engineered Wood Designer
Belvidere, Illinois, United States
$60k-$80k/yr OnsiteFull Time
QXO
QXONYSE: QXO: Tech-enabled distributor of building materials and products.
5+ YOE5+ years residential roof and floor truss design experience; proficiency sizing LVLs, I-Joists, PSL, Glulam; experience with truss and engineering software; AutoCAD LT and Microsoft Office proficiency.
Alpine, MiTek, MBA, Eagle Metal, Forte, BC Calc, Simpson Connector Selector, AutoCAD LT, Microsoft Office
2mo
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Junior Estimator
Rockford, Illinois, United States
OnsiteFull Time
MasTec
MasTecNYSE: MTZ: Infrastructure engineering and construction for energy, utilities, and communications.
5+ YOEBachelor's in civil/structural engineering or construction management preferred; 5 years heavy civil estimating; accurate takeoffs, cost estimates, contract review, site assessments, estimating software use, and risk analysis; able to lift 25 lbs and travel between IL and IN offices.
1mo
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Scientist, Computational Chemist & MLOps Engineer
Madison or Pasadena or San Diego or Verona
$100k-$125k/yr OnsiteFull Time
Arrowhead Pharmaceuticals
Arrowhead PharmaceuticalsNASDAQ: ARWR: Develops RNAi medicines to treat genetic and intractable diseases.
Bachelor's or Master's in a related field; strong Python, Linux, and Git skills; foundational statistics and ML knowledge; experience with biological/omics datasets, reproducible workflows, and scientific software; PhD preferred for senior levels.
Python, Linux, Git, HPC
2mo
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Junior Estimator
Rockford, Illinois, United States
OnsiteFull Time
MasTec
MasTecNYSE: MTZ: Infrastructure construction and engineering services provider.
5+ YOEBachelor's preferred in civil/structural engineering or construction management, 5 years heavy civil estimating experience, proficiency with estimating software, perform takeoffs, review contracts, and conduct site visits.
1mo
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Construction Project Manager
Springfield or Rockford or Peoria or Naperville
$120k-$160k/yr FieldFull Time
MasTec
MasTecNYSE: MTZ: Infrastructure construction and engineering services provider.
5+ YOE5+ years project management experience in road/highway projects, knowledge of estimating/scheduling software, OSHA 30, bachelor's in construction management/civil engineering preferred, ability to manage budgets, contracts, subcontractors, and field operations.
HCSS, B2W, P-6, Microsoft Project, HCSS Heavyjob, Procore, Vista Viewpoint