C# Developer Jobs in Illinois

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Java / C#.NET Software Engineer - Platform Engineer

Request Technology, LLC

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Oak Brook, Illinois, USA

Full-time

NO SPONSORSHIP SOFTWARE ENGINEER PLATFORM ENGINEER - Java / C#.NET SALARY: $97k -$184k plus 15% bonus LOCATION: Oak Brook, IL hybrid 3 days onsite Java & C# .Net developer, who can take Java technology and redesign it in .NET They want to move away from Java totally and eventually do all .NET (backend development/middleware enhancements) Any product development is a plus Internet of things IoT Looking for a candidate to architect and enhance core middleware that powers cloud IoT platform design
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Posted 60+ days ago | Updated 1 day ago

Software Engineer - Blazor / C# / Angular

Request Technology, LLC

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Chicago, Illinois, USA

Full-time

NO SPONSORSHIP Backend C# Developer / Blazor / Angular CONSULTANT SALARY: Our Rate: open LOCATION: Chicago, IL Onsite 5 days a week Duration minimum one year Looking for a candidate with 1-2 years blazor, strong backend c# and previous angular rest api experience must have knowledge of ui/ux must know unit testing As a software consultant, you will assist a group of top-caliber developers responsible for doing test-driven development of software components using C# in multiple layers including
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Posted 60+ days ago | Updated 1 day ago

.Net, C#, C++ Lead Engineer

Photon

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Remote

Contract

Greetings everyone, I hope you are staying safe. We are hiring a .Net, C#, C++ Lead Engineer to join our Digital Engineering team. Who are we? For the past 20 years, we have powered many Digital Experiences for the Fortune 500. Since 1999, we have grown from a few people to more than 4000 team members across the globe that are engaged in various Digital Modernization. For a brief 1 minute video about us, you can check ;/u> Job Title: .Net, C#, C++ Lead Engineer Location: Remote Job Description:
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Posted 42 days ago | Updated 13 days ago

Senior C#/React Native Mobile Engineer/Entertainment/Remote

Motion Recruitment Partners, LLC

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Remote or Philadelphia, Pennsylvania, USA

Full-time

A large company in the entertainment industry is hiring for a senior .NET/React Native developer. The firm needs someone with a strong background in .NET and React Native and has a background in entertainment and streaming to do full stack development on a customer facing product used by thousands of people daily. *This role is remote, but requires that you work EST hours* The company's main focus will be expanding, improving, and upgrading their customer facing platform. They are looking to bri
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Posted 27 days ago | Updated 5 hours ago

QA Automation Engineer (C#, Selenium)

People Force Consulting Inc

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Remote

Contract

Role - Automation Tester Duration: This is 3 months Contract to Hire Location Fully Remote Key Skills: C#, Selenium, Advanced Automation Consult with client, understand the QA ecosystem and define automation charter and frameworks.Design, build and maintain automation frameworks.Enable the automation teams to design, develop and maintain automation scripts, automate API testing based on project needs and integrate the automation suite in the CI Pipeline.Should handle client and team with resp
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Posted 33 days ago | Updated 17 hours ago

Microsoft Application Developer

DivIHN Integration Inc.

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Springfield, Illinois, USA

Contract

DivIHN (pronounced divine ) is a CMMI ML3-certified Technology and Talent solutions firm. Driven by a unique Purpose, Culture, and Value Delivery Model, we enable meaningful connections between talented professionals and forward-thinking organizations. Since our formation in 2002, organizations across commercial and public sectors have been trusting us to help build their teams with exceptional temporary and permanent talent. Visit us at to learn more and view our open positions. Please apply o
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Posted 11 hours ago | Updated 5 hours ago

Applications Development Sr Programmer Analyst - C# .Net- AVP - Houston (Hybrid)

Citi

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Remote or Houston, Texas, USA

Full-time

About the Role: The role is for an AVP analyst / developer within the Commodities Technology Front Office Risk team in Houston.Citi are now one of the largest Commodities players in the banking sector, having grown rapidly over the past five years and we have ambitious plans to further develop our Commodities platform. Our technology challenges are therefore fast-moving and varied. The team develops and supports a strategic platform which calculates, manages and stores intra-day and EOD risk dat
Posted 60+ days ago | Updated 9 hours ago

Sr. C#/.NET Integration Engineer (Apache NiFi/FHIR API's)

ConsultNet, LLC

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Remote or Dallas, Texas, USA

Full-time

Sr. C#/.NET Integration Engineer (Apache NiFi/FHIR API's) Remote (MST, Central or Eastern Time Zone) 6-12-month Contract or Contract to Hire Pay Rate: 75-80/hr A rapidly growing technology-driven organization focused on streamlining how sensitive records are managed, processed, and shared. They specialize in transforming manual, compliance-heavy workflows into secure, efficient digital solutions-helping clients improve access, accuracy, and overall operational performance across regulated env
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Posted 1 day ago | Updated 9 hours ago

Software Engineer II (Python or C#/.Net) Remote

ConsultNet, LLC

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Remote or Birmingham, Alabama, USA

Full-time

Software Engineer II (Python or C#/.Net) Remote (EST or CST) 8 month contract Pay Rate: $50.00 to $52.00 per hr. We're looking for a hands-on Software Engineer II to support a major migration from a legacy system to a modern enterprise data platform. This role is part of an ongoing transformation project that began in early 2025. You'll help accelerate development by contributing to backend services and high-performance data pipelines in a collaborative Agile environment. Key Responsibilities De
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Posted 41 days ago | Updated 9 hours ago

Early in Career Windows Software Engineer (C++, C#)

Rockwell Automation

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Remote or Phoenix, Arizona, USA

Full-time

Rockwell Automation is a global technology leader focused on helping the world's manufacturers be more productive, sustainable, and agile. With more than 28,000 employees who make the world better every day, we know we have something special. Behind our customers - amazing companies that help feed the world, provide life-saving medicine on a global scale, and focus on clean water and green mobility - our people are energized problem solvers that take pride in how the work we do changes the world
Posted 8 days ago | Updated 9 hours ago

Senior Software Engineering (RPA - Automation Anywhere 360 & C# .NET)

Mastercard

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Remote or O'Fallon, Missouri, USA

Full-time

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we're helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest po
Posted 60+ days ago | Updated 9 hours ago

Hedge Fund Software C# FIX/Order Management Software Engineer

Case Interactive

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Remote

Full-time

Senior Software Developer COMPANY Fund Solutions COMPANY is a Fin Tech company headquartered in New York, with offices also in Belfast, Shanghai, and Sydney. COMPANY develops financial software and provides product integration and implementation services for asset managers. COMPANYs products are used by portfolio managers, traders, research analysts, risk managers, accountants and operations. We look for people with a passion for finance and an understanding of how to use technology to solve bu
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Posted 60+ days ago | Updated 3 days ago

C#/Blazor Consultant

Request Technology, LLC

•

Chicago, Illinois, USA

Third Party, Contract

Onsite in Chicago, IL. 5 days a week A prestigious company needs a C#/Blazor Consultant. This person will need heavy C# full stack experience, along with 1-2 years of Blazor experience. Qualifications: Proficiency in C# (Proficiency in C++ is acceptable)Experience using gitExperience doing test-first development with continuous integrationExperience doing both front-end and back-end web development with REST APIsProficiency in at least at least one modern SPA framework like React, Angular, etc.P
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Posted 60+ days ago | Updated 21 days ago