321 The Agency ยท 5 hours ago
Full Stack Developer
United States
Full-time
Remote
Senior Level
5+ years exp321 The Agency is seeking a Full Stack Developer to lead the development and maintenance of sophisticated web applications and digital experiences. The role involves both back-end and front-end development, leveraging AI-assisted tools to enhance delivery and innovation while collaborating with various teams to meet client needs.
AdvertisingDigital MarketingMarketing
Responsibilities
Build and maintain robust API integrations connecting CRM platforms (HubSpot, Salesforce, High Level), marketing automation tools, and third-party services
Design and implement database architectures that support complex marketing workflows, customer journey tracking, and campaign performance analytics
Develop server-side logic, authentication systems, and data processing pipelines to support client marketing initiatives
Create and maintain RESTful APIs and webhooks that enable seamless data flow between platforms and applications
Design and develop responsive, high-performance web applications and client-facing interfaces with exceptional user experiences
Translate strategic requirements and creative briefs into functional, intuitive digital products
Implement modern front-end frameworks and best practices to ensure accessibility, performance, and cross-browser compatibility
Collaborate with creative team members to bring design concepts to life while maintaining technical feasibility and scalability
Conduct user testing and iterate on interfaces based on feedback and analytics
Leverage AI development tools like Replit, GitHub Copilot, and other AI-assisted coding platforms to accelerate development cycles and improve code quality
Explore and implement emerging AI technologies to enhance client solutions, including automation, personalization, and intelligent decision-making
Build prototypes and proof-of-concepts rapidly using AI-powered development environments
Stay current on AI development tools and techniques, sharing knowledge with the broader team
Partner with Client Success, Digital, and Creative teams to scope technical requirements and translate business objectives into technical solutions
Provide technical guidance on feasibility, timelines, and architecture decisions for client projects
Document code, systems, and processes to ensure knowledge transfer and maintainability
Troubleshoot complex technical issues across the full stack and provide solutions that balance immediate needs with long-term stability
Support technical aspects of client onboarding, particularly for CRM implementations and marketing automation projects
Qualification
Required
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
Preferred
Experience with healthcare, legal, or other regulated industry technical requirements
Company
321 The Agency
321 The Agency is a digital advertising and digital marketing company.
11-50 employees
Funding
Current Stage
Early StageLeadership Team
Carey Sobel
Partner + Chief Strategy Officer
Company data provided by crunchbase