Full Stack Developer — Internal Apps & Automation

United Contractor Services, LLC; Kennesaw (GA); On-site; USD 85,000 - 125,000; Full time

Job summary

United Contractor Services is seeking a Full Stack Developer to build, enhance, and support internal applications and tools used by field and office teams. The role covers frontend interfaces, back-end services, databases, and the APIs that tie them to core business platforms.

The ideal candidate is hands-on and analytical, can write clean code, design data models, debug production issues, and collaborate with accounting, operations, or a project team to translate needs into working software.

Qualifications

• 3+ years of professional software development across front end and back end.
• Proficiency in at least one back-end language (C#, Python, JavaScript/Node).
• Front-end experience with HTML, CSS, JavaScript and a modern framework (React, Angular, Vue).
• Strong SQL and relational database design skills.
• Hands-on experience building and consuming REST/JSON APIs, including authentication (OAuth, tokens).
• Experience with source control and standard development workflows (Git).
• Proven ability to translate business requirements into working software.
• Strong troubleshooting and root‑cause analysis skills.
• Comfortable working independently and owning outcomes.

Responsibilities

• Build and maintain internal web applications across UI, business logic, APIs, and databases.
• Design and optimize relational database schemas and queries.
• Develop and consume REST APIs and webhooks to move data between internal applications and core business platforms.
• Write readable, testable code and participate in code reviews.
• Partner with accounting, operations, HR, project teams, and IT to translate workflows into software.
• Identify manual processes that can be replaced with purpose-built tools or automation.
• Turn business requirements into technical designs and data models.
• Test, deploy, monitor, and support applications in production.
• Troubleshoot defects, performance, and data integrity issues.
• Implement logging, validation, and error handling.
• Document architecture, data models, field definitions, and rules.
• Establish standards for source control, API usage, authentication, and change management.
• Ensure security and audit compliance.
• Evaluate new frameworks/tools to improve delivery.
• Improve scalability and performance of existing apps.
• Proactively suggest improvements to leadership.

Skills

Full stack development

Backend languages

JavaScript/Node.js

SQL

REST APIs

Git

Analytical thinking

Independent worker

Tools

Viewpoint Vista

Procore

ADP

Paylocity

Job description

United Contractor Services is seeking a Full Stack Developer to build, enhance, and support internal applications and tools used by field and office teams. The role covers frontend interfaces, back-end services, databases, and the APIs that tie them to core business platforms.

The ideal candidate is hands-on and analytical, can write clean code, design data models, debug production issues, and collaborate with accounting, operations, or a project team to translate needs into working software.