Full-Stack Software Engineer – Own, Build, and Ship (Onsite)

United Contractor Services, LLC; Kennesaw (GA); On-site; USD 90,000 - 130,000; Full time

Job summary

United Contractor Services in Kennesaw, GA is seeking a full-stack developer to design, build, and own internal software used across accounting, HR, IT, and operations. You’ll work end-to-end across the stack, from UI to database, with a focus on reliability, performance, and data integrity.

This on-site role requires strong problem-solving and collaboration with cross-functional teams. You’ll turn business requirements into scalable software, participate in architecture decisions, and help

Qualifications

• 3+ years of full-stack development across front end and back end.
• Experience with C#, Python, or JavaScript/Node.
• Proficient in HTML/CSS/JS and modern frameworks (React/Angular/Vue).
• Strong SQL and relational database design skills.
• Experience building REST/JSON APIs with OAuth or token-based auth.
• Git and standard development workflows; ability to own work end-to-end.

Responsibilities

• Design, build, and own internal web applications from UI to DB.
• Create relational schemas, efficient queries, and stored procedures.
• Develop and consume REST APIs and webhooks to connect internal apps.
• Keep code maintainable, tested, and reviewed with the team.
• Handle testing, deployment, monitoring, and data integrity.
• Document architecture, data models, and business rules.

Skills

Full-stack dev

C#, Python, JS

Frontend: HTML/CSS/JS

SQL/DB design

REST APIs/OAuth

Git workflows

On-site GA

Tools

Viewpoint Vista

Procore

ADP/Paylocity

Azure

Job description

United Contractor Services in Kennesaw, GA is seeking a full-stack developer to design, build, and own internal software used across accounting, HR, IT, and operations. You’ll work end-to-end across the stack, from UI to database, with a focus on reliability, performance, and data integrity.

This on-site role requires strong problem-solving and collaboration with cross-functional teams. You’ll turn business requirements into scalable software, participate in architecture decisions, and help