Mid Developer jobs in Illinois

At World Wide Technology, we work together to make a new world happen. Our important work benefits our clients and partners as much as it does our people and communities across the globe. WWT is dedicated to achieving its mission of creating a profitable growth company that is also a Great Place t

Judge Group, Inc.

Requirements Must have: - 4-7 years of professional back-end development experience - Strong practical knowledge of C#.NET, .NET Core, and REST API development - Comprehensive understanding of data model design and development - Experience with enterprise integration and security best practices - Fa

RESPONSIBILITIES: Kforce has a client that is seeking a Front end Developer (Angular) in Saint Louis, MO. Key Responsibilities: * Develop and implement complex, scalable user interfaces using Angular and .NET Core for web and mobile applications * Ensure responsive design and accessibility complianc

Join our dynamic team as a Software Developer II where you will analyze, design, test, modify and implement software systems designed to support new or existing business initiatives. We are seeking passionate problem solvers with a mastery of PowerBuilder and Oracle, with the ability to work indepen

McCarthy Holdings

## POSITION SUMMARY McCarthy is seeking a full-time Senior Application Developer located in St. Lous, MO who as part of the Enterprise Solutions and Analytics team, will play a crucial role in building our application and integration portfolio, supporting our existing systems and driving innovation

Your Next Career Move Starts Here! The Role: Front-End Developer (Angular) Location: St. Louis, MO Type: Contract What You ll Do: Our client has an immediate need for a Front-End Developer to join their team. This role will support an application development project, and responsibilities will includ

Description SR. PYTHON DEVELOPER This position is based out of our St Louis, MO office About ArchKey ArchKey is one of the nation’s largest privately held specialty trade installation and integrated facility service companies. We are a leader in designing, building and maintaining electrical, techno

FEDITC, LLC is a fast-growing business supporting DoD and other intelligence agencies worldwide. FEDITC develops mission critical national security systems throughout the world directly supporting the Warfighter, DoD Leadership, & the country. We are proud & honored to provide these services

National Information Solutions Cooperative (NISC)

Company Overview: For more than 50 years, NISC has developed and implemented enterprise-level and customer-facing software solutions for over 960+ utilities and broadbands across North America. Our mission is to deliver technology solutions and services that are Member-focused, quality driven and va

Golden Technology

Your Next Career Move Starts Here! The Role: Backend Developer Location: St. Louis, MO (onsite) Type: Contract What You'll Do: Develop and maintain back-end services and REST APIs using C# and .NET Core. Knowledge of MVC and microservice architectural pattern. Understanding of agile development meth

Focus Financial Partners Inc.

The Salesforce Senior Developer will be responsible for designing, developing, and maintaining custom Salesforce solutions that support key business processes. Reporting to the Head of CRM, this role will play a critical role in advancing the organization’s Salesforce capabilities by delivering high

# Senior Mobile Lead Developer(Reactnative) - R01563454 About Brillio: Brillio is one of the fastest growing digital technology service providers and a partner of choice for many Fortune 1000 companies seeking to turn disruption into a competitive advantage through innovative digital adoption. Brill

Perficient

Job Description We currently have a career opportunity for a Lead RPA Developer to join our company. Job Overview: We are seeking a dynamic and experienced RPA Lead to spearhead our enterprise automation initiatives, transforming how we operate through smart automation and process excellence. The id

Berkeley, Missouri Job ID JR2026504663 Category Security Clearance Role Type Onsite Post Date Apr. 07, 2026 Job Description At Boeing, we innovate and collaborate to make the world a better place. We’re committed to fostering an environment for every teammate that’s welcoming, respectful and inclusi

At World Wide Technology, we work together to make a new world happen. Our important work benefits our clients and partners as much as it does our people and communities across the globe. WWT is dedicated to achieving its mission of creating a profitable growth company that is also a Great Place t

.NET Application Developer - Senior Hybrid On-Site Contract to Hire position W2 Candidates only please. We can not use Corp to Corp (C2C) candidates for this position. Hybrid On-Site with 2 days/week in office Rate: $58-60/hr. W2 with benefits The ideal candidate will be familiar with the full softw

Position Summary We are seeking an experienced and motivated Technical Support Developer to act as the bridge between the technical infrastructure and end-users, troubleshoot complex software issues, debug code and implement solutions. This person will investigate production incidents, perform root

Position Summary We are seeking an experienced and motivated Technical Support Developer to act as the bridge between the technical infrastructure and end-users, troubleshoot complex software issues, debug code and implement solutions. This person will investigate production incidents, perform root

Req Number: 39221 Location: Hazelwood, MO Postal Code: 63042 Country: United States Posted Date: 8/1/2025 About FlightSafety International FlightSafety International is the world’s premier professional aviation training company and supplier of flight simulators, visual systems and displays to commer

Kforce Technology Staffing

Requirements Must have: - Bachelors degree in Computer Science or a related field, or equivalent professional experience - Practical programming and scripting skills in PowerShell, SQL, VBS, .NET, and using REST/SOAP services for integrations - Strong familiarity with Azure platforms, including Azur