C# jobs in Illinois

Senior Fullstack Developer (C#, AWS, Angular)

Remote or Hybrid in Cleveland, Ohio

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Today

Precision is seeking a Senior Full Stack Developer for a contract position supporting our Fortune 100 client. This fully remote role requires work during Eastern Time business hours and focuses on building and supporting software across the UI, backend, APIs, databases, and cloud. You will develop with C#/.NET and Angular while designing APIs and microservices. Strong AWS experience is essential, including DynamoDB, SQS, SNS, S3, Lambda, and Terraform. The role also includes technical documentat

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Contract

DOE

Senior Software Engineer / .Net / C# /

Chicago, Illinois

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Today

Senior Software Engineer (Principal Level) Full-Time | Hybrid (3 Days Onsite) | Chicago, IL | Modern Software Development & Investment Technology A technology-driven investment organization is seeking a Senior Software Engineer to join its growing engineering team. This full-time opportunity is ideal for an experienced software professional who enjoys building scalable applications, driving platform innovation, and partnering closely with business stakeholders. The role offers the opportunity

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Full-time

$140000 - $180000

Jr. Software Developer C#

Remote

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Yesterday

Software Developer About The Opportunity The Intersect Group is partnering with a respected organization in the consumer finance industry that is committed to delivering innovative technology solutions that improve business operations and customer experiences. The company values collaboration, continuous learning, and technical excellence while fostering an environment where employees can develop their skills and make a meaningful impact. This is an opportunity to join a stable, technology drive

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Contract

Depends on Experience

IT Application Development - Senior/Specialist (Olympia)

Remote or Olympia, Washington

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Today

Salary: $99,300.00 - $133,608.00 Annually Location : Thurston County - Olympia, WA Job Type: Project (limited duration) Remote Employment: Flexible/Hybrid Job Number: 2026-08394 Department: Dept of Children, Youth, and Families Division: Information Technology Opening Date: 10/16/2026 Closing Date: 11/1/2026 11:59 PM Pacific Description Our vision is to ensure that "Washington state's children and youth grow up safe and healthy-thriving physically, emotionally and educationally, nurtured by fami

Full-time

USD 99,300.00 - 133,608.00 per year

Senior Fullstack Developer (C#, AWS, Angular)

Remote or Hybrid in Cleveland, Ohio

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Today

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Contract

DOE

Mainframe Developer with C#

Remote

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3d ago

Hiring, Greetings from Modern Agile Technologies. Position: Mainframe Developer (C#/.NET) Location: Remote Type: Contract (W2 Only) Required Skills: Strong experience in Mainframe technologies (COBOL, JCL, CICS, DB2, VSAM).Hands-on experience in C#/.NET development.Experience with SQL Server and database design.Knowledge of mainframe modernization, integration, and API development.Health care knowledge (preferred)

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Contract

Depends on Experience

Senior .NET Application Developer Application Support & Release Management

Lisle, Illinois

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4d ago

Role: Senior .NET Application Developer Application Support & Release Management Duration: 6-12+ Months Contract Location: Lisle, IL (4 days Onsite) In-person Interview in Lisle, IL Must Have Skills .Net Developer Skill 1 8 + Years of exp in .NET development Skill 2 3 + Years of Exp in React Skill 3- 4+ Years of exp in application support We are seeking a hands-on Senior .NET Application Developer with 58 years of experience to support and enhance enterprise console and web applications. T

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Contract, Third Party

45 - 55

Senior Software Engineer - .NET, C#, WPF

Remote

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Today

Job Description A Global Software Engineering company is seeking a Senior Software Engineer to develop and extend business applications for enterprise clients while providing technical leadership and mentorship to the development team. Working within an Agile Scrum environment, you will build and enhance applications across desktop and mobile platforms, including WPF, UWP, iOS, and Android. This role combines hands-on software development with project ownership, client engagement, and solution

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Full-time

$115000 - $130000

Senior Programmer (C# .Net)

Remote or Hybrid in Los Angeles, California

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Today

Job Title: Senior C# .NET Developer Remote Duration: 12 Months Skills Required The Senior Programmer will possess knowledge and experience in applications software development principles and methods sufficient to participate in the design, development, testing and implementation of new or modified applications software; operating systems installation and configuration procedures; organization's operational environment; software design principles, methods and approaches; principles, methods and

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Third Party, Contract

Senior Software Engineer (C#, Python or Java) - FTE Conversion

Remote

•

Yesterday

Title: Senior Software Engineer (C#, Python or Java) Location: Remote Duration: Full-Time Employment Conversion At Solventum, we enable better, smarter, safer healthcare to improve lives. As a new company with a long legacy of creating breakthrough solutions for our customers toughest challenges, we pioneer game-changing innovations at the intersection of health, material and data science that change patients' lives for the better while enabling healthcare professionals to perform at their best

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Contract

Depends on Experience

Senior Software Engineer

Remote

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3d ago

Payrate: $70.00 - $70.44/hr.SummaryAs a Senior Software Engineer, you will be a driver for many of our projects here at Company. You will interface with technical teams, lead projects, and mentor more junior engineers. You should be thorough in your designs and implementation, passionate about code quality, performance, and continuous improvement. You should be able to take a holistic view of software development; keeping the big picture in mind and seeing a project through from beginning to end

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Contract

$70 - $70.44

Jr - Mid level C# .Net Full Stack developer IOT

Remote

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4d ago

Jr - Mid level C# .Net Full Stack developer IOT Client is unable to sponsor visa at this time, so looking for USC. Required 26 years full-stack development shipping production software React / TypeScript + .NET C# or Python backend IoT protocol experience (MQTT, AMQP) or edge software integration Software packaging: installers, containers, or update agents AI tools in daily dev (Cursor, Copilot, Claude Code) CI/CD familiarity (GitHub Actions or equivalent) Nice to Have Medical device soft

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Contract

Depends on Experience

Full Stack Developer / C# .NET / Vue / Azure / Remote

Remote

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Today

A leading food services and facilities management organization is seeking a Full Stack Developer for a remote contract opportunity. This role will support application modernization initiatives and the migration of enterprise applications to Microsoft Azure, utilizing technologies including C#, .NET, Vue/Nuxt, SQL, and RESTful APIs to build and enhance business-critical solutions. What sets this opportunity apart is the chance to work on modernizing and rebuilding applications in a collaborative

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Contract

$45 - $75

IA-DOM-DOIT-SDP6-Full Stack .NET Developer - - .NET and Front-End Focus

Remote

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3d ago

Full Stack .NET Developer - - .NET and Front-End Focus Primary Location: Des Moines, IA V-Soft Consulting is currently hiring for a Full Stack .NET Developer - - .NET and Front-End Focus for our premier client in Des Moines, IA. Education and Experience: Bachelor's degree in Human-Computer Interaction (HCI), design, computer science, or a related field, or equivalent professional experience. A graduate degree in HCI is preferred. A degree in design or HCI combined with a solid coding background

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Contract, Third Party

$56.2

Managing Engineer (C#/ASP.NET)

Remote

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Today

At Allstate, great things happen when our people work together to protect families and their belongings from life's uncertainties. And for more than 90 years, our innovative drive has kept us a step ahead of our customers' evolving needs. From advocating for seat belts, air bags and graduated driving laws, to being an industry leader in pricing sophistication, telematics, and, more recently, device and identity protection. Job Description The Managing Engineer (C#/ASP.NET) leads a team of softwa

Full-time

USD 100,000.00 - 170,500.00 per year

Software Engineer III: Backend C#

Remote

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Today

Jack Henry, provides advanced bill payment and money transfer solutions to banks and credit unions. We offer modernized smart technology, including AI driven, security, cloud-based software, and fraud monitor, to deliver engaging payment solutions to customers. Our solutions help financial institutions to meet the payment expectations of today and the payment innovation needs of tomorrow. Payments become smarter, engaging, and predictive with Payrailz. We are looking for a software engineer who

Full-time

.Net Software Developer :: Remote

Remote or New Jersey

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Today

.Net Developer/.Net Software Developer California, MD, US Remote, but in office on occasion or as needed Fulltime-- This software developer analyzes, designs and develops computer software required to support hardware or technical service products. Performs systems modeling, simulation and analysis. Reviews system architecture, selects, and implements appropriate development and support tools to ensure product performance. The products are components of the military aviation mission planning e

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Full-time

Venafi Engineer (PKI Specialist)

Chicago, Illinois

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11d ago

A client of Innova Solutions is immediately hiring for a Venafi Engineer (PKI Specialist). Position type: Contract Duration: 12 to 18 months Location: 5 days onsite in Chicago, IL / Denver, CO / Washington, DC. As a Venafi Engineer (PKI Specialist),you will: Top Skills: 5+ years of experience in PKI engineering and certificate lifecycle management Hands-on experience with Venafi TPP, TLS Protect, or similar certificate management platforms. Experience in automation scripting (PowerShell or C

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Contract

Depends on Experience

Software Developer

Remote or St. Louis, Missouri

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Today

Software Developer Location: Remote Type: Long Term Contract Overview We are seeking a skilled Software Developer with strong expertise in C# .NET, SQL Server, Azure, Angular, and deployment pipelines. The ideal candidate will also have experience developing with Claude AI tooling, bringing modern AI integration into enterprise applications. This role offers the opportunity to work on innovative projects in a fully remote environment. Responsibilities Design, develop, and maintain application

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Full-time, Part-time, Contract, Third Party

USD 60-70

Lead Software Engineer

Hybrid in Chicago, Illinois

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5d ago

Lead Software Engineer Salary: Open + Bonus Location: Chicago, IL Hybrid: 3 days onsite, 2 days remote *We are unable to provide sponsorship for this role* Qualifications A minimum of 8 years of professional software engineering experience .NET (C#) React (or Next.js) Microsoft Azure Azure App Service Azure Container Apps/AKS Azure SQL Azure Service Bus Azure OpenAI Service Must have built production applications in Azure from the ground up. System design and cloud architecture. REST/Gra

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Full-time

Depends on Experience

C# jobs in Illinois, USA