Senior ASP.NET Developer jobs in Phoenix, AZ

Remote

•

3d 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

Easy Apply

Contract

Depends on Experience

Senior Full Stack .NET Developer - California or Hawaii

Remote or Hybrid in Honolulu, Hawaii

•

10d ago

Internal Position Title: Application Developer Come join our development team! We are a small, experienced and supportive team that enjoys solving challenging problems, reviewing ideas, sharing knowledge and building reliable solutions together. We value practical approaches, thoughtful technical discussions and an environment where everyone can contribute and continue developing professionally. We are looking for a hands-on Senior Full Stack .NET Developer to maintain and enhance business-crit

Easy Apply

Full-time

145000 - 160000

Senior .NET Applications Developer

Phoenix, Arizona

•

Today

Posting Date 10/20/26 Application Deadline 10/27/26 Pay Range $87,000 - $156,500 annually Salary offers are based on the candidate's equivalent experience and internal equity with other employees within the same job classification. This position is not eligible for overtime compensation. Job Type Unclassified Department Enterprise Technology About the Position Enterprise Technology and Innovation is seeking a highly skilled Senior .NET Applications Developer who is passionate about buildi

Full-time

USD 87,000.00 - 156,500.00 per year

Senior Application Developer

Remote or Lynnfield, Massachusetts

•

Today

Job Description Senior Application Developer About the Role We are seeking a highly skilled Senior Application Developer / Technical Lead to design, develop, support, and enhance enterprise web applications using modern Microsoft technologies. The ideal candidate will have strong experience with Angular, C#, .NET, IIS, Identity Management solutions, GitHub, Azure DevOps (ADO), and application security remediation practices. This role requires a hands-on technical leader who can collaborate ac

Full-time

USD 96,250.00 - 125,000.00 per year

Senior Full Stack .NET Developer - California or Hawaii

Remote or Hybrid in Sacramento, California

•

21d ago

Easy Apply

Full-time

145000 - 160000

Senior Full Stack .NET Developer

Remote

•

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

•

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

L&I IT Application Development - Senior/Specialist

Remote or Tumwater, Washington

•

Today

Salary : $99,300.00 - $133,608.00 Annually Location : Thurston County - Tumwater, WA Job Type: Full Time - Permanent Remote Employment: Remote Optional Job Number: 2026-08592 Department: Dept. of Labor & Industries Division: Information Technology Opening Date: 10/23/2026 Closing Date: 11/8/2026 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 Values: Customer Focus, One L&I,

Full-time

USD 99,300.00 - 133,608.00 per year

Sr. .NET Developer

Remote or McLean, Virginia

•

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 Engineer-Puerto Rico Remote

Remote or San Juan, San Juan

•

Today

Position:Senior .NET Engineer Experience:8+Years Work Mode:Puerto Rico Remote Contract: 12+Month We are Lokking for a Dot net Full stack Developer-Puerto Rico Remote Frontend Development Develop and maintain responsive, modular, and high-quality Angular applications. Implement UI components using TypeScript, HTML5, CSS\LESS\SCSS, and RxJS reactive patterns. Manage global and component-level state using NgRx. Write robust unit tests using Jest to ensure high code quality and maintainability

Full-time

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

Remote or Cincinnati, Ohio

•

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 ASP.NET Developer jobs in Phoenix, AZ, USA