Job Description
Job Description
SENIOR .NET APPLICATION DEVELOPER
HYBRID
ROCKVILLE, MD
CONTRACT DURATION at least a year
W-2 OR C2C
1) The Contractor shall provide expert-level experience support to the Department of Health
and Human Services (HHS) Applications Team. Support includes application development,
modernization, enhancement, maintenance, requirements gathering, and technical
documentation for existing and legacy systems slated for replacement or upgrade.
Services will encompass multiple applications utilizing comparable technology stacks,
including but not limited to:
Direct Purchase Order (DPO): Process flows and associated workflows currently
executed via the HighGear low-code/no-code platform.
Contract Management: Process flows and workflows associated with the agency
contract tracking system.
Process flows and workflows associated with HR tracking system
Process flows and workflows associated with Contract Actions such as
a. New contracts
b. Solicitations
All Current Request Types (e.g. inflationary adjustments, budget modifications,
Liquidate POs, Changes to Funding codes, etc.
Expert-level experience in the following technical and professional competencies:
a) Application Development: Minimum 7 years of experience developing modern .NET
Web Applications and Web APIs.
b) Application Maintenance: Minimum 7 years of experience maintaining .NET Web
Applications utilizing MVC, Clean, architecture.
c) Database Administration & Engineering: Minimum 7 years of experience with
Microsoft SQL Server and Oracle database administration, coding, integration, and
reporting.
d) Programming Languages: Proficiency in VB.NET, C#, Blazor, React, .NET, HTML,
and SQL.
e) Data Management: Demonstrated expertise in mapping and migrating data between
disparate database systems to Microsoft SQL Server.
f) Requirements Engineering: Proven ability to translate user enhancement requests into
functional requirements, system designs, and production-ready implementations.
g) Identity & Access Management: Experience in integrating applications with Single
Sign-On (SSO) and Microsoft Entra ID (formerly Azure AD).
h) AI Integration: Demonstrated Experience with leveraging AI tools (such as Microsoft
Copilot) safely, securely, and in compliance with organizational policies.
i) DevOps & Deployment: Experience publishing .NET deployment packages across
Development (DEV), Testing (TEST), and Production (PROD) environments.
j) UI/UX & Design: Minimum 7 years of experience applying responsive design
principles and executing UI/UX best practices. Accessible UI that are at least WCAG
2.1 AA compliant.
k) Project Governance: Demonstrated Experience working and collaborating within
structured project environments alongside an assigned Project Manager.
\nCompany Description
System One is a leading provider of specialized, highly technical services and solutions to critical infrastructure, technology, life sciences, and government sectors. We partner with large private and public organizations who trust us to execute their complex, mission-critical initiatives through our outsourced services and workforce solutions.
Company Description
System One is a leading provider of specialized, highly technical services and solutions to critical infrastructure, technology, life sciences, and government sectors. We partner with large private and public organizations who trust us to execute their complex, mission-critical initiatives through our outsourced services and workforce solutions.