Full Stack Developer
321 The AgencyOrlando, Florida, United States
Posted January 12, 2026
Full Time
About the Company
At 321, you will be a technical leader responsible for building and maintaining sophisticated web applications, integrations, and digital experiences that power our client's marketing technology infrastructure.
Job Description
As a Full Stack Developer at 321, you will be a technical leader responsible for building and maintaining sophisticated web applications, integrations, and digital experiences that power our client's marketing technology infrastructure.
Requirements
- 5+ years of experience in full stack development, preferably supporting marketing technology or agency environments.
- Strong proficiency in back-end languages and frameworks (Node.js, Python, PHP, or similar) with experience building APIs and integrations.
- Expertise in front-end technologies including HTML, CSS, JavaScript, and modern frameworks (React, Vue, or Angular).
- Demonstrated experience with CRM and marketing automation platforms (HubSpot, Salesforce, High Level, or similar) including custom integrations and implementations.
- Solid understanding of UI/UX principles with ability to design intuitive, user-centered interfaces.
- Experience with database design and management (SQL and NoSQL databases).
- Proficiency with AI-assisted development tools such as Replit, GitHub Copilot, Cursor, or similar platforms.
- Experience with version control (Git), CI/CD pipelines, and modern development workflows.
- Understanding of web security best practices, HIPAA compliance considerations, and data protection standards.
- Strong problem-solving skills with ability to debug complex issues across multiple systems.
- Excellent communication skills with ability to explain technical concepts to non-technical stakeholders.
- Self-directed and proactive, with ability to manage multiple projects and priorities simultaneously.