Senior ASP.NET Developer jobs in Phoenix, AZ

Phoenix, Arizona

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Today

United States This position is not eligible for employer sponsorship. Applicants must be legally authorized to work and must not require employer sponsorship. Location: 2727 N Central Ave, Phoenix, Arizona 85004 United States of America This position is 100% remote, but you must reside in the U.S. To ensure a fair and consistent evaluation process, candidates are expected to complete all interviews and assessments independently and without the use of artificial intelligence tools (including AI

Full-time

USD 90,000.00 - 120,000.00 per year

Senior .Net Software Engineer

Tempe, Arizona

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13d ago

Vaco is partnering with a national wealth management technology organization to hire a Senior Software Engineer focused on backend .NET development, API design, and modernization of core platform applications. This role will be part of a new Tempe-based engineering team and will serve as one of the most senior individual contributors locally. The immediate focus is modernizing legacy applications, including rewriting older systems into modern .NET. This is a backend-heavy role centered on C#, .N

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Full-time

Depends on Experience

Senior Full Stack .NET Developer - Remote

Remote or New York, New York

•

Today

Job Role: Senior Full Stack .NET Developer Location: New York City, NY - Hybrid Duration: Long Term Project No C2C only W2 Job Summary: We are seeking an experienced Senior Full Stack .NET Developer to join our team in New York City. The ideal candidate will have strong full-stack development expertise with Angular 15+, C#/.NET, MS SQL Server, RESTful APIs, cloud platforms, and modern DevOps/CI/CD practices. Key Responsibilities: Design, develop, test, and maintain scalable full-stack web app

Contract

$DOE

Enterprise Architect IV

Remote

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4d ago

Lead Full-Stack Application Developer (.NET / Azure)1-Year Contract-to-Hire -Remote / Hybrid Hourly Rate range is $83 -$96 Candidates requiring visa sponsorship now or in the future are NOT ELIGIBLE to apply for this opportunity. C2C or 1099 not available for this opportunity! Potential candidates will need to have the ability to work W2 on Prominent payroll during the contract period.Ready to Accelerate Your Career?We're looking for a Lead Full-Stack Application Developer who wants more than ju

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Contract

Depends on Experience

Sr .Net Developer

Remote

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5d ago

Must Haves: API Development experience, .Net core stack esponsibilities: Design, develop, and maintain high-quality, production-grade software solutions aligned with enterprise standards, using Microsoft .NET (Framework and .NET Core), C#, SQL Server, and integrated system components.Contribute across all phases of the software development lifecycle, ensuring adherence to documented processes, coding standards, and quality guidelines.Collaborate with cross-functional team members to design scala

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Full-time, Third Party

65 - 70

Full Stack .Net Developer / Senior .Net Developer / .Net Developer / Dot Net Developer /

Remote

•

Today

Hiring: Full Stack .NET Developer | 8+ Years Experience We are looking for an experienced Full Stack .NET Developer to join our team and work on scalable, enterprise-grade applications. Experience: 8+ Years Must-Have Skills: C# / .NET / .NET Core Core / Web API REST APIs & Microservices React.js or Angular JavaScript / TypeScript SQL Server & Entity Framework Azure / AWS Git & CI/CD Agile/Scrum Strong OOP & Design Patterns Looking for: Strong hands-on developers who can work across Front

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Full-time, Third Party

$100,000 - $130,000

Senior .NET Developer (Billing Platform)

Remote

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13d 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 Database Developer

Remote or Chicago, Illinois

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Today

RESPONSIBILITIES: Kforce has a client in Chicago, IL that is seeking a Senior Database Developer. Key Responsibilities: * Analyze existing database architecture, decipher complex logic, and assess current data models * Partner with business stakeholders and product owners to gather and translate requirements into scalable database solutions * Design and develop new data models, schemas, and database objects aligned with business needs and performance standards * Build and optimize tables, store

Contract

$50 - $50 hourly

Application Developer - Senior

Remote

•

Today

Description Synergy Business Innovation & Solutions is a premier implementer of cutting-edge software solutions. Synergy brings the experience and expertise necessary to deliver capability that provides tangible ROI to our customers. Our core areas of expertise are in the fields of Digital Transformation, Cloud Solutions, SaaS and Low-Code/No-Code Solutions, Emerging Technologies, Data Analytics and Visualization, Information Assurance, and Business Process Re-Engineering. Synergy offers its e

Full-time

USD 100,000.00 - 120,000.00 per year

.NET Core Senior Software Engineer

Chandler, Arizona

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Today

Overview We are seeking a full-time .NET Core Senior Software Engineer in our Chandler, AZ location. In this role, you will be responsible for providing technical leadership and project planning for software development for Garmin's commercial aviation products as an individual contributor. Essential Functions Serves in a leadership capacity as an individual contributor for carrying out software development in C#/.NET Core framework and other selected languages for new products and/or applicati

Full-time

IT Application Development - Sr/Spec (ITAD-SS/ETS)

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: Remote Optional Job Number: 2026-07498 Department: Health Care Authority Division: ETS Opening Date: 09/09/2026 Closing Date: 9/23/2026 11:59 PM Pacific Salary Information: The high end of the salary range, Step M is typically a longevity step Description IT Application Development - Sr/Spec (ITAD-SS/ETS) 71115338 Help build the future of Washington's healthcare

Full-time

USD 99,300.00 - 133,608.00 per year

Senior .Net Developer

Remote

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4d ago

HRA JOB TITLE: Senior .Net Developer PROJECT DESCRIPTION: ITS serves all DSS program areas to fulfill their IT needs. To meet the business needs and ITS' workload, ITS is seeking qualified candidates in the areas of Database design, architecture, and development, including base definition, structure, documentation, long-range requirements, operational guidelines, and protection. Ensures accuracy and completeness of data in master files and various support tools, such as base dictionaries. Establ

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Contract, Third Party

Depends on Experience

.NET Developer Technical Lead

Remote

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13d 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 .NET Engineer-Puerto Rico Remote

Remote or San Juan, San Juan

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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 Backend .NET Software Engineer

Remote

•

Today

Company Description Experian is a global data and technology company, powering opportunities for people and businesses around the world. We operate across a range of markets, from financial services to healthcare, automotive, agribusiness, insurance, and many more. Experian invests in people and new advanced technologies to unlock the power of data. We have an amazing team of 25,200 people in 32 countries. Job Description We help healthcare providers and insurers ensure accurate patient eligi

Full-time

USD 119,219.00 - 214,594.00 per year

Senior Software Engineer, Full Stack

Remote

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Today

Lyric is the trusted leader in healthcare decision intelligence. Built on more than 35 years of proven results, Lyric combines responsible AI with clinical, payment, regulatory, and policy expertise to deliver transparent, auditable insights in milliseconds across real-time claims workflows. Lyric augments human decision-making so health plans can make faster, more accurate payments while maintaining full control. Today, Lyric supports 200 million lives, with nine of the top 10 U.S. health plans

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