Senior ASP.NET Developer jobs in Chicago, IL

Senior .NET Developer (Remote & possible FTE conversion)

Remote

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Today

Job Description: Job Title: Senior .NET Developer Duration: 3+ Months Contract with Possibility of FT Conversion Job Location: Remote (Raleigh, NC preferred location preferred) Role Overview: The Developer, Specialist performs thorough end-to-end analysis of complex business functionality, provides technical solutions for complex business requirements, and implements enterprise-grade software solutions. This role functions as an individual contributor, capable of working independent

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Contract, Third Party

Depends on Experience

Senior .NET Application Developer

Lisle, Illinois

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Today

CTG is seeking to fill a Senior .NET Application Developer position for our client in Lisle, IL. Location: Lisle, IL Duration: 12 months Hybrid role: 4 days in office Required Skills: 10+ years of professional software development experience, preferably with significant hands-on experience in the Microsoft technology stack.Strong experience with C#, .NET Framework, ASP.NET, ASP.NET Core, MVC, Web API, ADO.NET, Entity Framework, WCF, and related technologies.Experience developing and supporti

Full-time

USD 65.00 - 70.00 per hour

Senior .Net Developer

Remote

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11d ago

The AOC information & Technology Services Department is seeking a contract resource for the role of Senior Developer - Development Team, who can assist a development team in developing new software, maintaining existing enterprise systems, troubleshooting complex application issues, and supporting the modernization of KCOJ software solutions. Requirements for candidates are described below. Additionally, to ensure scheduled interviews are productive and results-oriented, please refer to the atta

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Contract, Third Party

Depends on Experience

Senior Software Developer

Remote

•

Today

ROLE: SENIOR SOFTWARE DEVELOPER (TESTER) REQUIRED: Active Public TrustRemoteFederal civilian agency experience IRS or Treasury experience preferred Experience supporting mission-critical production applications Experience operating in FISMA-regulated environments Experience with Agile, SDLC, and application lifecycle management processes Experience supporting production deployments and application maintenance Experience supporting application modernization and migration efforts Strong communica

Full-time

Senior Full Stack Developer (Remote)

Remote or Columbia, Maryland

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Today

At FEI Systems, we create innovative technology solutions to improve the delivery of health and human services because we know when cumbersome administrative processes stand in the way, those who need it most are often left without access to proper care and support. From comprehensive case management software to disaster recovery services and content management information systems used in delivering foreign aid, our solutions are improving the lives of millions of people. We're looking for a ful

Full-time

Senior Software Engineer / .NET / Hybrid in Chicagoland

Bolingbrook, Illinois

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Today

Software company looking to bring on a Senior Software Engineer. You'll be key to driving modernization and growth by developing technical solutions that enhance business operations. You will play an impactful part in modernizing legacy systems, transitioning from VB.NET to C#, and evolving web platforms from ASP.NET to Blazor. You'll also contribute to the ongoing development and improvement of the company's ERP system. This is a full-time position. They are located in the southwest suburbs of

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Full-time

$120000 - $137000

Lead .Net Developer

Lisle, Illinois

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Today

Position Overview We are looking for a skilled Lead .Net Developer to contribute to our Commercial Sales Experience (CSE) product initiative. The ideal candidate is proficient in the full software development lifecycle using an Agile framework, enhancing existing web applications, ensuring long-term application performance and can work effectively in a collaborative and fast-paced environment. Responsibilities Developing Web APIs in .NET CoreWriting extensive unit tests and Web API testingRe

Full-time

USD 112,000.00 - 168,000.00 per year

Developer, Senior Lead

Remote or Hybrid in Raleigh, North Carolina

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Today

The Developer, Specialist performs thorough end-to-end analysis of complex business functionality, provides technical solutions for complex business requirements, and implements enterprise-grade software solutions. This role functions as an individual contributor, capable of working independently and within teams, and serves as the technicalleadon development projects.Were looking for experience in: C# / .NET microservices REST API design JWT, OAuth, and API security AWS (API Gateway, IAM, ECS/E

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Full-time

Depends on Experience

Developer, Senior Lead Technical

Remote

•

Today

*ACENTRA HEALTH* *Developer, Senior Lead Technical Job Description* Remote US EST Time zone work schedule (Candidates in Raleigh NC preferred but not required) Role Overview The Developer, Specialist performs thorough end-to-end analysis of complex business functionality, provides technical solutions for complex business requirements, and implements enterprise-grade software solutions. This role functions as an individual contributor, capable of working independently and within teams, and serve

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Full-time

Depends on Experience

L&I IT Application Development - Senior/Specialist

Remote or Tumwater, Washington

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Today

Salary : $99,300.00 - $133,608.00 Annually Location : Thurston County - Tumwater, WA Job Type: Full Time - Permanent Remote Employment: Flexible/Hybrid Job Number: 2026-05972 Department: Dept. of Labor & Industries Division: Information Technology - Applications & Data Management Opening Date: 07/28/2026 Closing Date: 8/11/2026 11:59 PM Pacific Salary Information: The high end of the salary range, Step M is typically a longevity step Description Our Mission: Keep Washington Safe and Working!Our

Full-time

USD 99,300.00 - 133,608.00 per year

Senior Developer

Remote

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Today

Senior Developer - Remote Primary Location: Remote Frankfort Kentucky V-Soft Consulting is currently hiring for a Senior Developer - Remote for our premier client Frankfort, Kentucky. Education and Experience Bachelors degree in computer science, Mathematics, or related field 5+ yrs. job experience or associate degree in computer science/information technology (related field) with 2+ yrs. job-related experience 2+ year experience configuring, implementing, and troubleshooting enterprise applic

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Contract

Depends on Experience

Remote: Full Stack Developer, Senior

Remote

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Today

Job Description Precise Systems delivers integrated, mission-ready solutions that advance warfighter readiness and strengthen our nation's most critical defense programs. Through the power of our combined capabilities, we provide deep expertise in Advanced Engineering; Digital Transformation; Electromagnetic Warfare; Interactive Training & Simulation; Physical Sciences Research; Platform Lifecycle Support; and Foreign Military Sales. Unified by decades of trusted performance and expanded throug

Full-time

USD 120,000.00 - 145,000.00 per year

Lead Application Developer

Remote or Bethesda, Maryland

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Today

Analytica is seeking a Senior Developer / Task Lead to support a mission-critical, high-visibility federal government program. The ideal candidate will serve as a technical leader responsible for overseeing the design, development, and delivery of enterprise applications while ensuring alignment with federal compliance, performance, and security standards. This role combines hands-on development with leadership responsibilities across the full software development lifecycle. Analytica has been

Full-time

Senior .NET Developer / Cincinnati, OH/ Candidates - REMOTE

Remote or Cincinnati, Ohio

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Today

Greetings, We're seeking a Senior Full Stack Developer with strong backend expertise in .NET Core/.NET 8 and React.js on the frontend. Join a dynamic team building modern tech solutions for a leading financial and real estate client. Senior .NET Developer w/ React.js Application Developer Application Developer Cincinnati, OH - Hybrid Permanent IMPORTANT NOTE: This role requires the submission of a code exercise, which will take a senior developer 90 minutes (or longer) to complete. Please d

Full-time

Senior Software Engineer (.NET)

Chicago, Illinois

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Today

Senior Software Engineer (.NET) Remote Location: Remote (U.S.) Salary: $150,000$175,000 Base Salary Job Overview We are seeking an experienced Senior Software Engineer to join a growing software development team. In this role, you will contribute to the design, development, and enhancement of enterprise applications built on the Microsoft technology stack. You'll play a key role in delivering scalable, high-performance solutions while collaborating with cross-functional teams to build rel

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Full-time, Third Party

$150000 - $175000

Senior Technical Lead – C#/.NET | AWS | Microservices

Remote

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Today

*ACENTRA HEALTH* *Developer, Senior Lead Technical Job Description* *Remote US EST Time zone work schedule (Candidates in Raleigh NC preferred but not required)* RATE : 60 ON W2 Role Overview The Developer, Specialist performs thorough end-to-end analysis of complex business functionality, provides technical solutions for complex business requirements, and implements enterprise-grade software solutions. This role functions as an individual contributor, capable of working independently and withi

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Full-time

Depends on Experience

Healthcare Technical .Net Full Stack Lead - (HIPPA, CMS, AI/ML) (100% REMOTE)

Remote

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Today

Technical .Net Full Stack Lead Location: REMOTE Duration: 06+ months Key Responsibilities Health Care Experience is Mandatory Discover career satisfaction by design in this challenging position, where you will: Head up technical teams and workstreams as you design, develop, test and install complex database applications software with server, client and web components Keep the team on the same page by overseeing relationships between application architects and developers to ensure design requirem

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Third Party, Contract

$50 - $60

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