Senior ASP.NET Developer jobs in Philadephia, PA

Wilmington, Delaware

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23d ago

Senior .NET Full Stack Developer emphasizing backend for platform integrations and payments processing in our core banking systems. You''ll drive secure, scalable solutions for transaction workflows, third-party gateways, and regulatory-compliant payment platforms. Key Responsibilities Develop backend services in .NET Core/8+ for payments processing, including ISO 20022/SWIFT message handling, real-time rails (FPS, RTP), and full lifecycle from initiation to settlement/reconciliation.Integrate p

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Full-time

Up to 115000

Senior .NET Developer

Philadelphia, Pennsylvania

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2d ago

Overview Amyx is seeking to hire a .Net developer to support the DLA DMLSS Apps Dev contract in the Philadelphia area. This Position is for a Senior .Net Developer with experience in Web application development. This includes development in ASP.NET Web Forms, ASP.NET MVC, C# consoles, and Angular. Oracle Database and Informatica PowerCenter experience are a plus. Responsibilities 1. Senior .Net developer - comfortable architecting, designing, coding, testing, and troubleshooting Windows and we

Full-time

Senior .NET Developer

Pennsylvania

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Yesterday

TransUnion's Job Applicant Privacy Notice Personal Information We Collect Your Privacy Choices Team Overview The DHI and DataLink Support organization is responsible for developing and supporting critical insurance technology products that help TransUnion deliver data-driven solutions to customers across the insurance industry. This team consists of four product-focused development teams supporting multiple business-critical applications that contribute to TransUnion's insurance solutions portfo

Full-time

USD 90,000.00 - 150,000.00 per year

Senior .NET Developer

Pennsylvania

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Yesterday

Full-time

USD 90,000.00 - 150,000.00 per year

Sr .NET Developer

King of Prussia, Pennsylvania

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Today

Overview Job Title: Sr .NET Developer Location: Hybrid - King of Prussia, PA (4 days onsite/1 day remote) Job Type: Independent Contract (Contractor / Non-Employee) Start Date: ASAP Pay Rate: $68-70/hr 1099 / C2C Contract Length: 12+ Months Role Summary We are seeking an experienced Senior .NET Developer with strong technical expertise and demonstrated leadership capabilities to lead a team of developers while remaining actively involved in software design, development, and delivery. The idea

Full-time

USD 68.00 - 70.00 per hour

Sr. Full Stack .NET Developer (Azure + Angular) - 3626915

Wilmington, Delaware

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Today

Lighthouse Technology Services is partnering with our client to fill their Full Stack .NET Developer (Azure + Angular) position! This is a 12+ month contract opportunity and will be hybrid in Wilmington, DE. This role will be a W2 employee of Lighthouse Technology Services. Position Overview: We're seeking a Full Stack .NET Developer with deep hands-on experience across Microsoft's development stack and strong proficiency in Azure Cloud and Angular frameworks. This role will support a major ba

Full-time

USD 65.00 - 80.00 per hour

Senior .Net Developer

Remote

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8d 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

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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

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

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

Senior Developer

Remote

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9d ago

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

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

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 ASP.NET Developer jobs in Philadelphia, PA, USA