Web API Development jobs in United States

Senior .Net Application Developer

ASSYST, Inc. · Posted Nov 7, 2026

Rockville, Maryland, United States
Full-time · Senior

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Senior .NET Application Developer to support development, modernization, enhancement and maintenance of enterprise web applications and workflow solutions.

Responsibilities

Design, develop, enhance, modernize, and maintain .NET web applications and Web APIs.
Maintain existing applications built using MVC and Clean Architecture.
Support process flows and workflow applications currently implemented through the HighGear low-code/no-code platform.
Gather and translate user enhancement requests into functional requirements, technical designs, and production-ready solutions.
Perform database administration, development, integration, reporting, and data migration using Microsoft SQL Server and Oracle.

Requirements

Master's degree (MS) in Computer Science, Information Technology, or a related computer field.
Nice to have: Previous government or public-sector project experience

Skills

.NET web application development Web API development MVC Clean Architecture Microsoft SQL Server

Application Consultant

Application Consultant

Compensation

Responsibilities

Requirements

Skills

Senior .Net Application Developer

Responsibilities

Requirements

Skills