Available for hire

Hi, I'm David R

Full-Stack Developer specializing in full-stack applications, database optimization, and business intelligence. I turn complex technical challenges into measurable business results.

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// Measurable Impact

$80K+

Annual Cost Savings

Medical billing application

5 Hours

Daily Time Reduction

Database optimization

75%

Process Acceleration

Workflow automation

60%

Productivity Increase

ETL pipeline engineering

// Technical Skills

Frontend

React.js JavaScript (ES6+) HTML5/CSS3 Tailwind CSS WPF

Backend

Node.js Express.js C# (.NET) Python RESTful APIs

Database

SQL Server T-SQL MongoDB Database Design Query Optimization

Tools & DevOps

Git JIRA CI/CD Render Agile/Scrum

// Professional Experience

OneKey MLS

2022

4 months

Software Developer (Contract)

▹ Reduced daily batch processing by 5 hours through T-SQL optimization
▹ Automated realtor data lifecycle with Python & HubSpot API
▹ Built real estate property update workflows with OData APIs

T-SQL Python HubSpot API OData SQL Server

FONAR Corporation

2019 - 2022

3.5 years

Software Developer

▹ Led full-stack C# WPF application from conception to deployment
▹ Architected production database schema and complex stored procedures
▹ Engineered ETL pipeline saving 15 hours/week per employee
▹ Achieved $80K annual savings and 80% reduction in insurance rejections

C# WPF .NET SQL Server Python SSIS Git

Sikorsky (Lockheed Martin)

2018 - 2019

1.5 years

Business Intelligence Developer

▹ Migrated legacy Hyperion infrastructure to Tableau & Power BI
▹ Built automated dashboards for helicopter manufacturing workflow
▹ Enabled real-time decision-making vs. delayed manual reporting

Tableau Power BI SSRS SQL Server Hyperion

// Featured Project

Full-Stack Notes Application

Production MERN stack web application with cloud deployment

Source Live Demo

Frontend

React.js with Vite bundler, deployed as static site on Render

Backend

Node.js/Express RESTful API with CRUD operations

Database

MongoDB Atlas with Mongoose ODM, automatic backups

DevOps

CI/CD via GitHub integration, separate frontend/backend deployments

Status: Live in production with authentication feature in development

Let's Build Something Together

Looking for a full-stack developer who delivers results?
Let's talk about your next project.

D-rz@live.com LinkedIn