Senior ASP.NET Developer jobs in Chicago, IL

Chicago, Illinois

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Today

Job#: 3057858 Job Description: Summary: We are seeking an experienced Senior Database Developer for a temporary engagement to lead a critical initiative to redesign and modernize a legacy system for a financial services client. This role will focus on analyzing existing database architecture, translating complex business logic into scalable solutions, and building high-performance, compliant data models. The ideal candidate will play a key role in delivering robust, auditable, and secure data s

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Full-time

$50 - $50 per hour

Senior .NET Developer – Payment Systems & Integrations

Hybrid in Lisle, Illinois

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Today

Job Title: Senior .NET Developer Digital Payments & Subscription Billing Location: Lisle, Illinois (Hybrid, Onsite 4 Days per Week) Position: 6-12 Months Contract, Right to Hire TalentFish is casting a line for a Senior .NET Developer Digital Payments & Subscription Commerce. This is a 612 month contract opportunity with the potential to convert to full-time. Candidates must reside in the Chicagoland area and be able to work onsite 4 days per week. The Senior .NET Developer will support and

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Contract

65 - 75

Certified Microsoft .NET web Developer IV

Remote

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2d ago

Certified Microsoft .NET web Developer IV Primary Location: Madison, WI V-Soft Consulting is currently hiring for a Certified Microsoft .NET web Developer IV for our premier client in Madison, WI. Education and Experience Performs front-end and back-end development of web applications and web APIs (web services). (5-8+ years)Experience with ASP.net and SSRS reporting (5-8+ years)SQL Backend and stored procedure experience (5-8+ years)Development and Support experience on web-based applications

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Third Party, Contract

$63.38

Sr .Net AI Developer

Westchester, Illinois

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Today

Hello Everyone, Hope you are doing good My name is Pavan and I work with SPAR Information System., I have a great opportunity for you, please find the job details below, if you are interested in applying please send me your updated resume and best time for you to discuss about this opportunity in details. Position: Backend .NET Developer with AI bent of Development Approach Location: Westchester, IL 3 days onsite in a week Duration: 6+ Months We are seeking skilled .NET Developer with strong e

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

Senior .NET Full Stack Developer - FHIR

Remote

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20d ago

Role: Senior .NET Full Stack Developer - FHIR Location: Remote Duration: 6+ months Job description: We are seeking a highly experienced Senior .NET Full Stack Developer with FHIR expertise to support a large-scale application modernization initiative. The ideal candidate will have strong hands-on experience in C#/.NET 8+, React, TypeScript, REST APIs, FHIR, microservices, Azure Cloud, and event-driven architecture. This is a hands-on technical leadership role involving modernization of le

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Contract

Depends on Experience

Senior .NET Web Developer (Certified) - REMOTE (WI Resident/MUST Relocate to WI)

Remote

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7d ago

Job Description: Crop to Crop resumes are accepted Location Requirement: Onsite, hybrid or remote: Candidates must be WI residents or willing to relocate to WI prior to starting the role. 100% remote work is an option. Can accommodate if candidate wants to work onsite. The Certified Microsoft .NET Web Developer IV is responsible for day-to-day maintenance of applications and support for business requests. The person in this role will manage integrations. This project requires knowledge of full

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Third Party, Contract

Depends on Experience

Senior Full Stack .NET Developer

Remote

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Today

Job Title: Senior Full Stack .NET Developer Job Location: Remote Job Type: Full Time Job Description: Develop scalable web applications using .NET and ASP.NET Core. Build responsive frontend applications using React or Angular with TypeScript. Develop REST APIs and backend services using C#. Work with Entity Framework Core, SQL Server, and Azure SQL. Integrate applications with external APIs and enterprise systems. Implement authentication, authorization, logging, caching, and error handling.

Full-time

Senior Backend .NET Developer

Remote

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Today

Job Title: Senior Backend .NET Developer Job Location: Remote Job Type: Full Time Job Description: Develop backend services and REST APIs using C# and .NET. Build business and domain logic using SOLID and Clean Architecture principles. Work with Entity Framework Core, LINQ, SQL Server, and Azure SQL. Design integrations with enterprise and third-party systems. Implement asynchronous processing, background services, and messaging. Work with Azure Service Bus and other messaging technologies. I

Full-time

Sr. .NET Developer

Remote or McLean, Virginia

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Today

Public Trust Eligibility Required About Aretum Aretum is a mission-driven organization committed to delivering innovative, technology-enabled solutions to our customers across defense, civilian, and homeland security sectors. Our teams work at the intersection of strategy, technology, and transformation, helping agencies solve their most critical challenges. We believe in investing in our people and creating a culture where collaboration, inclusion, and professional growth are at the forefront

Full-time

USD 120,000.00 - 150,000.00 per year

Senior .Net Full Stack Developer

Remote

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Today

Senior .NET Full-Stack DeveloperExperience: 11+ years Employment Type: Contract W2 only About the RoleWe are looking for a Senior .NET Full-Stack Developer to design, build, and ship scalable, secure web applications across the full stack. You will own features end to end, make architectural decisions, mentor developers, and work closely with product, QA, and DevOps teams to deliver high-quality software. Key ResponsibilitiesDesign and develop enterprise-grade applications using C#, .NET 6/7/8,

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Contract

Depends on Experience

Senior Software Engineer - .NET & React

Chicago, Illinois

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Today

About Northern Trust As a global leader in innovative wealth management, asset servicing, asset management and banking services, Northern Trust (Nasdaq: NTRS) is proud to guide the world's most successful individuals, families, corporations and institutions. Since 1889, we have aligned our efforts with our three guiding Principles That Endure: Service, Expertise, and Integrity. Together, they reflect the three cornerstones of business conduct which we strive to instill in our employees, whom we

Full-time

USD 114,500.00 - 194,700.00 per year

Sr. Software Engineer

Chicago, Illinois

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Yesterday

We're building a relationship-oriented bank for the modern world. We need talented, passionate professionals who are dedicated to doing what's right for our clients. At CIBC, we embrace your strengths and your ambitions, so you are empowered at work. Our team members have what they need to make a meaningful impact and are truly valued for who they are and what they contribute. To learn more about CIBC, please visit CIBC.com Who You Are The successful candidate will be a technically strong, de

Full-time

USD 130,000.00 - 135,000.00 per year

Senior Manager, Application Development (.Net, React, Databricks)

Chicago, Illinois

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Today

We're building a relationship-oriented bank for the modern world. We need talented, passionate professionals who are dedicated to doing what's right for our clients. At CIBC, we embrace your strengths and your ambitions, so you are empowered at work. Our team members have what they need to make a meaningful impact and are truly valued for who they are and what they contribute. To learn more about CIBC, please visit CIBC.com What You'll Be Doing As a Senior Manager, Application Development at

Full-time

USD 160,000.00 - 180,000.00 per year

Senior .NET Developer (Billing Platform)

Remote

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16d ago

Role OverviewContribute to development of a billing/claims platform supporting high-volume transactional systems Build and scale backend services and enterprise applications Improve and evolve existing systems and architecture Design scalable, maintainable, and extensible solutions Participate across the full SDLC, including design, development, testing, and deployment Collaborate cross-functionally to translate business requirements into technical solutions Ensure code quality through test auto

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Full-time

Depends on Experience

Senior .NET Software Engineer

Remote

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10d ago

Job Title: Senior .NET Software EngineerExperience: 6+ Years Mandatory Skills: .NET, C#, React, SQL Server Job DescriptionWe are looking for an experienced Senior .NET Software Engineer with strong expertise in .NET, C#, React, and SQL to develop, customize, implement, and support enterprise-level digital banking applications.The ideal candidate should have strong problem-solving skills, experience in client-facing technical roles, and the ability to deliver secure, scalable, and high-performan

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Full-time

Up to $135,000

Senior Manager, Application Development (.Net, React, Databricks)

Chicago, Illinois

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Today

We're building a relationship-oriented bank for the modern world. We need talented, passionate professionals who are dedicated to doing what's right for our clients. At CIBC, we embrace your strengths and your ambitions, so you are empowered at work. Our team members have what they need to make a meaningful impact and are truly valued for who they are and what they contribute. To learn more about CIBC, please visit CIBC.com What You'll Be Doing As a Senior Manager, Application Development at

Full-time

USD 160,000.00 - 180,000.00 per year

Sr. Software Engineer

Chicago, Illinois

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Today

Full-time

USD 130,000.00 - 135,000.00 per year

IT Application Development - Senior/Specialist

Remote or Olympia, Washington

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Today

Salary: $99,300.00 - $133,608.00 Annually Location : Thurston County - Olympia, WA Job Type: Full Time - Permanent Remote Employment: Flexible/Hybrid Job Number: 2026-0195 Department: Board of Industrial Insurance Appeals Opening Date: 11/06/2026 Closing Date: 12/6/2026 11:59 PM Pacific Description This is an anticipated opening. The Board of Industrial Insurance Appeals (BIIA) is offering a challenging and rewarding opportunity for the right individual to make a difference through serving the s

Full-time

USD 99,300.00 - 133,608.00 per year

Sr Manager, Software Engineering

Chicago, Illinois

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Today

We're building a relationship-oriented bank for the modern world. We need talented, passionate professionals who are dedicated to doing what's right for our clients. At CIBC, we embrace your strengths and your ambitions, so you are empowered at work. Our team members have what they need to make a meaningful impact and are truly valued for who they are and what they contribute. To learn more about CIBC, please visit CIBC.com What you'll be doing As a member of CIBC Bank US team, the Sr. Manag

Full-time

USD 155,000.00 - 185,000.00 per year

.NET Developer Technical Lead

Remote

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16d ago

OverviewWe are looking for a hands-on Technical Lead and experienced .NET engineer to help lead the development of a newly formed Adherence Engineering Team. This team will design and build technology solutions that help medical practices improve patient vaccination adherence through targeted outreach and automation. Early pilot programs have already demonstrated strong results, showing over a 10% increase in vaccination rates when practices leverage patient outreach tools. This team will play a

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Full-time

Depends on Experience

Senior ASP.NET Developer jobs in Chicago, IL, USA