c# Jobs in Chicago, IL

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Sr. Full Stack C# React Developer

Randstad Digital

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Remote or Redmond, Washington, USA

Contract

job summary: Full Stack C#/React Developer needed for a Contract opportunity with Randstad Technologies client in Redmond WA. Our client is looking for a senior full stack developer. This role involves development using React components, which is a valuable skill in the current market. You will also contribute to cost-saving initiatives, particularly in the support experience area. location: Redmond, Washington job type: Contract salary: $63 - 68 per hour work hours: 8am to 5pm education
Posted 17 hours ago | Updated 2 hours ago

Principal Software Engineer (Wynsure/C#/C++/Java/AWS)

AFLAC

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Remote

Full-time

Salary Range: $119,000 - $169,000 Job Posting End Date: 7/14/25 We've Got You Under Our Wing We are the duck. We develop and empower our people, cultivate relationships, give back to our community, and celebrate every success along the way. We do it all The Aflac Way . Aflac, a Fortune 500 company, is an industry leader in voluntary insurance products that pay cash directly to policyholders and one of America's best-known brands. Aflac has been recognized as Fortune's 50 Best Workplaces for Di
Posted 2 days ago | Updated 2 hours ago

Dot Net with Angular and C#

Sriven Systems Inc.

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Remote

Contract

Dot Net with Angular and C# Remote We Need Tek systems Formers only BARD MIGRATIONS Number of OEs needed: 1Working on: You ll help migrate Apps from .NET and Dev Lab to MIA.Looking for:C#.NET CoreContainerizationKubernetesCloudWCFSenior-level ownership: Able to independently design, build, and review significant features.Communication: Clear and proactive in sharing progress, blockers, and design rationale.Collaboration: Willing to work closely with internal engineers as peers in an Agile team
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Posted 23 hours ago

Senior Full Stack Developer (C# / React.js)-W2 Contract

Donato Technologies Inc

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Chicago, Illinois, USA

Contract

We are looking for a talented and motivated C# and React Developer to join our development team. The ideal candidate will have experience building scalable web applications using C# (.NET) on the backend and React.js on the frontend. You will work closely with cross-functional teams including UX/UI designers, product managers, and QA engineers to deliver high-quality, maintainable software. Key Responsibilities Design, develop, and maintain web applications using C# (.NET Core / ASP.NET) and Re
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Posted 3 days ago | Updated 19 hours ago

C++/C# Developer ? Application Integration Support

The Dignify Solutions, LLC

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Remote or Columbia, Maryland, USA

Contract, Third Party

Job Responsibilities: Develop, maintain, and enhance application code using C++ and C# to support ongoing integration, maintenance, and enhancement needs across multiple transit system initiatives. Perform code analysis, debugging, and resolution of software defects reported from field operations or testing environments. Participate in peer code reviews, design reviews, and software quality assurance processes to maintain high development standards. Develop unit tests and integration tests to va
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Posted 3 days ago | Updated moments ago

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 11 days ago

Senior Developer Tech Lead Position - C# with Workflow Orchestration tools using WSO2 or MuleSoft or Mendix or Appian.

Digipulse Technologies, Inc

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Remote

Full-time, Third Party

(Job Description) - Hands-On Senior Developer Tech Lead Position 1. Strong proficiency in C# for scalable, maintainable development. 2. Hands-on experience with Workflow Orchestration tools using WSO2 or MuleSoft or Mendix or Appian. 3. Expertise in API Management/Gateway platforms such as WSO2 or Apigee or Mulesoft. 4. Lead the design and development of enterprise-grade APIs and Microservices. 5. Design and implement event-driven architecture using Kafka or RabbitMQ. 6. Provide technical leader
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Posted 3 days 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 11 days ago

Senior C# Full Stack Developer

Precision System Design Inc.

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Remote

Contract

Our Fortune 100 direct client is hiring for experienced Senior Full Stack Developers to work on large-scale IT projects. You would be designing and coding in a variety of technologies supporting and developing an Vue/Angular UI application, with C# back-end microservices. The ideal candidate will have strong C# development experience, has worked with front-end technologies such as angular, and back-end experience with SQL Server. This role can be done fully remotely following an EST work schedul
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Posted 10 days ago | Updated 6 hours ago

Gameplay Engineer - C#

SGS Consulting

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Remote

Contract

Responsibilities: Create NPC tools to demonstrate NPC behaviors in Open WorldsCreate both simple and complex examples that can be used both for creator samples and for AI training.Requirements: BS in Computer Science/Engineering or equivalent industry experience.3-5 years game development experience.Proficiency in C#Ability to work independently with minimal outside supervision.Ability to multi-task, prioritize and be flexible able to adapt plans and react to change in a diverse, fast-paced, and
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Posted 42 days ago | Updated 9 days 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 11 days ago | Updated 5 hours ago

C# Developer

Headway Tek Inc

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US

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

1.C# Dev -AKS & Azure Requirement: C#, Asp.Net Azure Kubernetes Services (AKS) or Kubernetes Azure Cosmos DB REST API/ Microservices MS Experience Knowledge of Al Other requirements: Communication: Good Onsite/Offshore Co- ordination Passionate about Learning Should be able to work in couple of overlap PST hours Should work in PST time zone
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Posted 21 days ago | Updated moments ago

MES Developer with .net and C#

Indotronix International Corp

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Remote

Contract

Role: MES Developer Location: Remote Pay Rate: $77/Hr on W2 Duration: 6+ Months Location: Remote, required to be within 1-2 hour commutable distance in one of the following client office locations: - Corning, NY - Charlotte, NC - Vineland, NJ - Phoenix, AZ - Hemlock, MI - Hickory, NC - Blacksburg, VA - Keller, TX - Boston, MAKey Responsibilities: Strategic view and understanding of Siemens Opcenter/Camstar Execution to lead design and development efforts across client. Design, implement,
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Posted 10 days ago

C# Developer

Kforce Technology Staffing

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Remote or Boca Raton, Florida, USA

Contract

RESPONSIBILITIES: Kforce has a client that is seeking a C# Developer in Boca Raton, FL. Key Responsibilities: * Architect, develop, and maintain a modern full-stack multi-tenant SaaS platform using .NET 9, C#, and Azure * Apply Domain-Driven Design () and clean architecture principles to support scalability, maintainability, and long-term growth * Build intuitive and responsive front ends using Telerik UI for ASP.NET Core, Bootstrap, Razor Pages, HTML, jQuery, and JavaScript * Design and implem
Posted 10 days ago | Updated 3 hours 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 37 days ago | Updated 2 hours ago

Remote Position: Need C# & .Net developer with PeopleSoft / workday integration Exp

Svam International, Inc.

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Remote

Third Party, Contract

C# & .Net developer with PeopleSoft / workday integration Exp Long term contract Remote Position Job Description: Design, develop, and deploy scalable and resilient microservices using C# and the .NET framework. Proficiency in C# and the .NET framework (.NET Core, Core) are required skills.Ability to collaborate with cross-functional teams to define, design, and develop new features and services.Experience developing and maintaining robust, efficient, and secure RESTful APIs to facilitate seam
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Posted 9 days ago | Updated 1 day ago

.NET Microservices Developer - (C#, .NET Core, ASP.NET, SQL Server)

Cloud and Things

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New York, USA

Contract, Third Party

Our goal is to solve problems and deliver results for our clients. At Cloud and Things, you can be a part of transforming the public sector's IT environment. Our team is on the forefront of helping to solve the government's most complex IT challenges. If you are seeking a role that offers the opportunity to work on rewarding projects, consider a career with Cloud and Things. *This is an exempt position. Salary commensurate with experience* Overview: We are seeking a .NET Microservices Developer
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Posted 8 days ago | Updated 1 day ago

C#.NET API Developer

TriCom Technical Services

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Remote

Contract

C#.NET API Developer Summary This C#.NET API Developer will focus on developing financial applications, creating workflows, and API integration. Responsibilities Support the company's financial systems.Develop Web-based solutions for internal customers business needs using C#/MVC.NET and MS SQL.Develop methods and processes to interact with various Cloud-based APIs using SOAP and RESTful APIs.Develop and maintain data synchronization between various systems within and between the company and o
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Posted 18 days 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 52 days ago | Updated 24 days ago

C# Software Developer

Zachary Piper Solutions, LLC

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Remote

Full-time

Piper Companies is seeking a C# Software Developer to join a leading shipping and logistics organization. The C# Software Developer will work on backend development, automate workflows, and assist in designing cloud-based applications, with an emphasis on data. Responsibilities of the C# Software Developer include: Lead the design, development, testing, and deployment of .NET C# applications. Architect complex data structures for rate audits of parcel carrier invoice files. Design, develop, an
Posted 50 days ago | Updated 25 days ago