.NET Developer Legacy System Decommissioning (On-Site, NYC)

.NET Developer – Onsite | New York, NY

Job Type: Contract
Client: OATH
Location: 66 John Street, 11th Floor, New York, NY 10038
Work Schedule: 35 hours per week, Monday–Friday
Work Arrangement: Onsite — physical presence in the office is required five days per week
Openings: 1

Position Overview

OATH is seeking an experienced .NET Developer to support the development of its Special Education Hearings Division Case Management System. This system will manage hearings from intake through disposition, including an online filing and case-status portal, hearing workflows, scheduling, reporting, and integration with Department of Education and State Education Department systems.

The ideal candidate will have strong full-stack development experience with C#, ASP.NET MVC, .NET Core, Entity Framework, SQL Server 2019, and Angular 8.

Key Responsibilities

• Design, develop, and enhance case management workflows using C#, ASP.NET MVC, .NET Core, and SQL Server 2019.
• Build responsive user interfaces using HTML5, CSS3, JavaScript, and Angular 8.
• Develop an online submission portal with embedded business rules and workflows, including mobile access for checking case status and reviewing and approving documents.
• Implement workflows for processing submitted forms, scheduling hearings, and managing hearing-room calendars.
• Develop REST and SOAP web services to exchange information and process data files from external agencies.
• Integrate Active Directory authentication and implement user permissions and role-based access controls.
• Develop and integrate reports using SQL Server Reporting Services (SSRS) and Crystal Reports.
• Implement error and warning handling to support hearing-related activities.
• Develop Microsoft Edge-compatible integrations for scanning and audio/video recording services.
• Apply Service-Oriented Architecture (SOA), MVC, and appropriate software design patterns.
• Use Database Access Application Block (DAAB) and Exception Handling Application Block (EHAP) where required.
• Write and execute unit tests, resolve defects, and prepare application deployments for sanity, regression, functional, and QA testing.
• Collaborate with technical teams, stakeholders, and subject matter experts throughout development and delivery.

Required Qualifications

• Minimum of 4 years of relevant experience meeting the Programmer 2 labor-category requirements.

• Strong hands-on experience with:

  • C#, ASP.NET MVC, and .NET Core.
  • Entity Framework Core or Entity Framework 6.
  • Code First or Database First development, LINQ, EF migrations, query optimization, and complex data relationships.
  • SQL Server 2019, including database design, optimized SQL queries, stored procedures, and performance tuning.
  • RESTful API development and integration using ASP.NET Core Web API.
  • SOAP web services, WSDL, and XML.
  • HTML5, CSS3, and JavaScript ES6+.
  • Angular 8, including single-page applications, components, directives, services, and routing.
  • SSRS and Crystal Reports, including report development, deployment, and application integration.
• Strong understanding of MVC architecture and design patterns, including Repository, Factory, and Singleton.
• Experience with unit testing using xUnit, MSTest, or NUnit, and familiarity with Test-Driven Development (TDD).
• Proficiency with Git for source control and team collaboration.
• Hands-on experience with CI/CD practices using Azure DevOps, Jenkins, or GitLab CI.
• Experience implementing authentication and authorization using OAuth, JWT, and role-based access control.
• Strong analytical, troubleshooting, and problem-solving skills.
• Excellent verbal and written communication skills, with the ability to work effectively with executives, managers, technical teams, and non-technical stakeholders.

Preferred Qualifications

• Experience designing and developing microservices-based applications.
• Experience optimizing frontend, backend, and database performance.
• Familiarity with Docker and Kubernetes for application containerization and deployment.

Screening and Onboarding Requirements

• The selected candidate must complete fingerprinting and criminal background screening, including New York State DCJS and FBI record checks, and receive OATH clearance before contract award.
• A signed non-disclosure agreement is required.

• Candidates must provide at least three references from current or former clients for whom they performed similar work. Each reference must include:

  • Name and address.
  • Phone number and email address.
  • A brief description of the work performed.
• Interviews may be conducted in person and/or by telephone.