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Sr, Full Stack .NET Developer

Company:
Siritech Solutions Corp
Location:
Austin, TX
Posted:
September 26, 2026
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Description:

Job Description

Senior Full Stack .NET Developer (.NET Core, React, Azure, Power BI)

Total RequiredExperience in Years: 14+ Years

Mode of Work: 100% OnsiteAusti, TX (Texas Local Candidates Only)

Seeking an experienced Senior Full Stack .NET Developer to design, develop, modernize, and support enterprise applications and reporting solutions for large-scale government and healthcare initiatives. The consultant will work closely with business stakeholders, architects, and cross-functional IT teams to deliver scalable, secure, cloud-enabled solutions using .NET Core, React JS, SQL Server, Oracle, Power BI, and Azure technologies.

The ideal candidate will possess extensive experience in full-stack application development, legacy modernization, cloud platforms, Oracle-to-SQL Server migrations, DevOps automation, and enterprise reporting within government or regulated environments.Key Responsibilities:

Design, develop, and maintain enterprise applications using .NET Core and C#.

Build modern frontend applications using React JS, JavaScript, HTML, and CSS.

Develop RESTful APIs and backend services.

Design, develop, and optimize SQL Server databases, stored procedures, views, and functions.

Perform Oracle database integration and legacy data migration to SQL Server.

Develop and maintain Power BI dashboards, paginated reports, and data models.

Design and deploy cloud-native applications using Microsoft Azure.

Implement CI/CD pipelines and automated deployment processes.

Troubleshoot production issues across the full technology stack.

Perform unit testing, integration testing, regression testing, and defect resolution.

Convert legacy applications into modern web-based solutions.

Transform and migrate legacy data into new enterprise platforms.

Collaborate with business analysts and architects to translate business requirements into technical solutions.

Prepare technical specifications, solution designs, architecture diagrams, and operational documentation.

Mentor junior developers and promote coding standards and best practices.

Participate in Agile ceremonies including sprint planning, backlog refinement, daily standups, and release planning.

Monitor application performance, security, availability, and scalability.

Support DevOps, governance, and production deployment activities.Required Skills:

.NET Core

C#

ASP.NET Core

React JS

JavaScript

HTML5

CSS3

SQL Server

Oracle Database

Oracle Data Migration

SQL Performance Tuning

Data Modeling

Power BI

Paginated Reports

Azure Cloud

Azure App Services

Azure Storage

CI/CD Pipelines

Git

Azure DevOps

DevOps

REST APIs

Full Stack Development

Legacy Application Modernization

Legacy Data Migration

Agile Scrum

Application Architecture

Technical Documentation

Section 508 AccessibilityPreferred Skills:

Enterprise Application Architecture

Cloud-Native Development

Microservices

API Integration

Azure Functions

Entity Framework Core

PowerShell

Docker

Kubernetes

Government IT Systems

Healthcare Systems

Secure Application DevelopmentRequired Qualifications:

Bachelor\'s Degree in Computer Science, Information Systems, Business, or related field (or equivalent work experience).

Minimum 14 years of Full Stack .NET development experience.

Extensive experience with .NET Core, C#, React JS, JavaScript, HTML, and CSS.

Strong experience with SQL Server, including data modeling, performance tuning, and query optimization.

Experience with Oracle database development and Oracle-to-SQL Server migration.

Extensive Power BI experience, including dashboards, paginated reports, and data transformation.

Hands-on experience with Microsoft Azure cloud services.

Experience with CI/CD pipelines, Git, and DevOps tools.

Experience modernizing legacy applications into web-based solutions.

Experience migrating enterprise data from legacy systems.

Strong analytical, troubleshooting, communication, and collaboration skills.

Experience working within Agile/Scrum environments.

Minimum 6 years of experience supporting Texas State Agencies or other State Healthcare Agencies.

Experience working within government or other regulated environments.Preferred Qualifications:

8+ years supporting enterprise government or healthcare systems.

Experience leading enterprise modernization initiatives.

Experience mentoring development teams.

Experience designing scalable cloud-native enterprise applications.

Experience implementing accessibility standards (Section 508).Deliverables:

Enterprise Web Applications

REST APIs

React Frontend Components

SQL Server Database Objects

Oracle Migration Solutions

Power BI Dashboards & Reports

Azure Cloud Deployments

CI/CD Pipelines

Legacy Modernization Solutions

Technical Design Documents

Architecture Diagrams

Test Plans & Results

Production Deployment Documentation

Knowledge Transfer DocumentationEducation:

Bachelor\'s Degree in Computer Science, Information Systems, Business, or related field (or equivalent work experience).

Full-time

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