IT Developer Jobs in Illinois

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Senior Staff IT Developer

Right Skale, Inc.

•

Illinois, USA

Third Party

The Staff/Senior Staff IT Developer (Application Security) will design and secure internal applications, conduct security code reviews, perform penetration testing, and collaborate with cross-functional teams in an Agile environment. Key Responsibilities: Design secure, scalable IT solutions focused on performance. Conduct security code reviews for quality and best practices. Identify and remediate vulnerabilities (e.g., XSS, SQLi, CSRF, SSRF). Perform web app penetration testing (manual/automa
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Posted 4 days ago

Senior Developer - IT

United Airlines

•

Chicago, Illinois, USA

Full-time

Description United's Digital Technology team is comprised of many talented individuals all working together with cutting-edge technology to build the best airline in the history of aviation. Our team designs, develops and maintains massively scaling technology solutions brought to life with innovative architectures, data analytics, and digital solutions. Team Overview: The Crew Technology team provides web and mobile digital solutions to the largest frontline employee group at United. 45 thousa
Posted 14 days ago | Updated 9 hours ago

Senior Backend Developer - IT (IoT)

United Airlines

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Chicago, Illinois, USA

Full-time

Description United's Digital Technology team is comprised of many talented individuals all working together with cutting-edge technology to build the best airline in the history of aviation. Our team designs, develops and maintains massively scaling technology solutions brought to life with innovative architectures, data analytics, and digital solutions. Job overview and responsibilities The Senior Software Developer will be responsible for the development of critical applications within Above T
Posted 35 days ago | Updated 9 hours ago

Developer - .Net, C# Information Technology

United Airlines

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Chicago, Illinois, USA

Full-time

Description Find your future at United! We're reinventing what our industry looks like, and what an airline can be - from the planes we fly to the people who fly them. When you join us, you're joining a global team of 100,000+ connected by a shared passion with a wide spectrum of experience and skills to lead the way forward. Achieving our ambitions starts with supporting yours. Evolve your career and find your next opportunity. Get the care you need with industry-leading health plans and best-i
Posted 37 days ago | Updated 9 hours ago

Senior Developer - .Net, C# Information Technology

United Airlines

•

Chicago, Illinois, USA

Full-time

Description Find your future at United! We're reinventing what our industry looks like, and what an airline can be - from the planes we fly to the people who fly them. When you join us, you're joining a global team of 100,000+ connected by a shared passion with a wide spectrum of experience and skills to lead the way forward. Achieving our ambitions starts with supporting yours. Evolve your career and find your next opportunity. Get the care you need with industry-leading health plans and best-i
Posted 37 days ago | Updated 9 hours ago

Sr Developer, Software (IT)

DaVita Inc.

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Remote or DeLand, Florida, USA

Full-time

Posting Date 06/12/2025 3000 DaVita Way, Deland, Florida, 32724-2039, United States of America Developer, IT Software (Labs) General Purpose of the Job The Developer, IT Software (Lab) designs and develops .NET applications. Specifically, this position may develop applications using a combination of .NET technologies (e.g., C# and ASP.Net) and database objects (e.g., tables, triggers, packages, stored procedures and functions). This position also writes technical specifications, supports qua
Posted 60+ days ago | Updated 9 hours ago

Sr Developer

Randstad Digital

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Remote or Cleveland, Ohio, USA

Contract

job summary: For this contractor assignment, looking for four IT Apps Programmer Senior who will work on the System Prerequisites project under the Home Financial System Integration Program. location: Cleveland, Ohio job type: Contract salary: $58.57 - 68.75 per hour work hours: 8am to 5pm education: Bachelors responsibilities: Day-to-Day Responsibilities: - Analyzing requirements for software programs - Writing or modifying code for complex programs, components, or applications - Writi
Posted 5 days ago | Updated moments ago

IT Apps Programmer Sr (Specialized)

Randstad Digital

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Remote or Cleveland, Ohio, USA

Contract

job summary: For this contractor assignment, seeking two developers with strong cloud experience that will work in a fast paced, collaborative environment, with groups in both IT and business areas: designing, coding, unit testing in a variety of technologies supporting backend, API, database, Cloud and UI. location: Cleveland, Ohio job type: Contract salary: $65 - 75 per hour work hours: 8am to 5pm education: Bachelors responsibilities: Day-to-Day Responsibilities: - Working with story
Posted 4 days ago | Updated moments ago

Staff IT Engineer

Circles Inc.

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Remote or San Francisco, California, USA

Full-time

Circle is a financial technology company at the epicenter of the emerging internet of money, where value can finally travel like other digital data - globally, nearly instantly and less expensively than legacy settlement systems. This ground-breaking new internet layer opens up previously unimaginable possibilities for payments, commerce and markets that can help raise global economic prosperity and enhance inclusion. Our infrastructure - including USDC, a blockchain-based dollar - helps busines
Posted 29 days ago | Updated 9 hours ago

Splunk ITSI Engineer-Offshore- India - Bngaluru based or Nearshore/Latin America

AptoNet Inc

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Remote

Contract

At Lilly, we unite caring with discovery to make life better for people around the world. We are a global healthcare leader headquartered in Indianapolis, Indiana. Our 35,000 employees around the world work to discover and bring life-changing medicines to those who need them, improve the understanding and management of disease, and give back to our communities through philanthropy and volunteerism. We give our best effort to our work, and we put people first. We re looking for people who are det
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Posted 33 days ago | Updated 4 hours ago

Direct Client:: W2 contract:: Need Sr. Fullstack Java Developer with ThymeLeaf & Healthcare experience:: 100% remote

Synergy Technologies, LLC

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Remote

Contract

W2 contract to Fulltime position No Sponsorship required = Role: Sr. Fullstack Java Developer Location: 100% remote Job Description: Sr. React Developers are responsible for the development, programming, and coding of Information Technology solutions using ReactJS, Redux, D3 and NodeJS to enable Client Customer Experience applications. Senior IT Developers are responsible for documenting detailed system specifications, participation in unit testing and maintenance of planned and unplanned i
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Posted 3 days ago | Updated 3 days ago

Senior IT Security Engineer (Hybrid Work Schedule)

Virginia Jobs

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Remote or Richmond, Virginia, USA

Full-time

Title: Senior IT Security Engineer (Hybrid Work Schedule) State Role Title: Salary Non-Specified Hiring Range: $121,581 - $155,000 Pay Band: UG Agency: Virginia Retirement System Location:Virginia Retirement System Agency Website:;br> Recruitment Type: General Public - G Job Duties Hybrid Work Schedule: this position will work onsite two days a week (Tuesday and Wednesday) and 3 days remotely (Monday, Thursday and Friday). VRS is seeking a highly skilled and experienced Senior IT Security Engi
Posted 60+ days ago | Updated 9 hours ago

Principal Engineer - IT Critical Infrastructure

United Airlines

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Arlington Heights, Illinois, USA

Full-time

Description Job overview and responsibilities The Principal Engineer is responsible for the design, testing, evaluation, implementation, and support of various platforms (hardware, operating systems, software, and systems tools). Provide consultation and direct technical support in life cycle planning, problem management, integration, and systems programming. Implement releases, upgrades, and/or changes into the environment. This position will define the IT provisioning, implementation, and sup
Posted 3 days ago | Updated 9 hours ago

It Support Engineer

TEKsystems

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Remote or New York, New York, USA

Full-time

Position Summary: This is a customer oriented support role centered on providing first-level technical support towards end user desktop, laptop, mobile device, application and peripheral installation, configuration and issues. A tech savvy individual with willingness to interact with users live or through other digital communication methods to provide guidance, troubleshooting and issue resolution and deliver on tech requests, tasks and projects are important aspects of this position. A good und
Posted 2 days ago

It Support Engineer

TEKsystems

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Remote or New York, New York, USA

Full-time

Description Peterson Management engages in a range of activities, including investment management for the Peterson family, and provides management and operational support, including Finance, Legal, Human Resources, and Information Technology, to the Peter G. Peterson Foundation, Peterson Center on Healthcare and other entities. Department Summary The Information Technology department supports the Peter G. Peterson Foundation (PGPF), The Peterson Center on Healthcare LLC, Peterson Health Techno
Posted 3 days ago | Updated 2 days ago

Principal ServiceNow Developer/Architect (US Remote Available)

Splunk Inc.

•

Colorado, USA

Full-time

Description Splunk, a Cisco company, is building a safer and more resilient digital world with an end-to-end full stack platform made for a hybrid, multi-cloud world. Leading enterprises use our unified security and observability platform to keep their digital systems secure and reliable. Our customers love our technology, but it's our caring employees that make Splunk stand out as an amazing career destination. No matter where in the world or what level of the organization, we approach our wor
Posted 60+ days ago | Updated 9 hours ago

IT Engineer III

Allwyn Corporation

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Remote

Contract

Position: IT Engineer Location: Remote Duration: Long Term Job Description: Enhance Cloud engineering practice by automating manual business and IT processes in Amazon Web Services (AWS) with common Infrastructure as Code services such as CloudFormation, CodePipeline, SSM Automation Documents, Config Rules.Build CI/CD pipeline configurations to orchestrate provisioning and deployment of both large and small scale systems.Write unit tests and integration tests to validate infrastructure code.Id
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Posted 10 days ago | Updated 6 days ago

Senior IT Service Desk Engineer

Coinbase

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Remote

Full-time

Ready to be pushed beyond what you think you're capable of? At Coinbase, our mission is to increase economic freedom in the world. It's a massive, ambitious opportunity that demands the best of us, every day, as we build the emerging onchain platform - and with it, the future global financial system. To achieve our mission, we're seeking a very specific candidate. We want someone who is passionate about our mission and who believes in the power of crypto and blockchain technology to update the
Posted 2 days ago | Updated 9 hours ago

IT Software Engineer 4

SmallArc, Inc

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Chicago, Illinois, USA

Full-time

Position: IT Software Engineer 4 Location: Chicago, IL (Hybrid in-office 2 days per week) Duration: 12 months Education & Experience Requirements: Bachelor s degree in Computer Science, Electrical Engineering, or a related field with 8+ years of experience, OR Master s degree with 6+ years of experience Required Technical Skills: 7+ years of hands-on experience developing software applications using Java 17 Proven expertise in many of the following areas: o Scalable application design, develop
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Posted 18 days ago

IT Cloud Engineer - Remote

Mayo Clinic

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Remote or Rochester, Minnesota, USA

Full-time

Job Description Work will primarily be performed remotely but may require incumbent to be on site. Mayo Clinic is seeking a highly skilled and motivated Cloud Engineer to join our team. The ideal candidate will develop and implement innovative cloud-based operational capabilities that support key business initiatives aligned with Mayo Clinic's strategic goals. This role requires demonstrated experience in leveraging DevOps and FinOps methodologies to optimize customer workflows and maximize bus
Posted 2 days ago | Updated 9 hours ago