AI Fullstack Engineer Intern

Let's Code; Denver (CO); Hybrid; USD 6,700 - 8,900; Part time

Job summary

Gesture is seeking an AI Full Stack Engineer Intern to work on production-facing features across its consumer application and Reach360 platform. You will gain hands-on experience across frontend, backend, APIs, databases, and AI-driven workflows while collaborating with seasoned engineers.

The internship blends full-stack development with agentic AI, offering mentorship, real-world project exposure, and a fast-paced startup culture that rewards ownership and adaptability.

Qualifications

• Pursuing a degree in Computer Science, Software Engineering or related field.
• Experience with LangChain, LangGraph, or other agentic AI frameworks.
• Familiarity with the Fern stack: Firebase, Express, React, and Node.js preferred.
• Experience with Google Cloud Platform (GCP) preferred.
• Familiarity with modern frontend frameworks, especially React.
• Knowledge of backend development using Node.js or Python; REST APIs and databases.

Responsibilities

• Build and ship features across frontend, backend, and internal tools.
• Design and prototype agentic workflows using LangChain or LangGraph.
• Write clean, tested, and maintainable code.
• Work with APIs, databases, and frontend frameworks to deliver end-to-end functionality.
• Participate in code reviews and sprint planning.
• Debug and resolve issues across the stack.
• Collaborate with product and design teams to convert requirements into working software.
• Contribute to technical documentation and engineering best practices.

Skills

Problem-solving

Time management

Organizational skills

Fast-paced work ability

Education

Pursuing CS/Software Eng degree

Tools

LangChain

LangGraph

Firebase

Express

React

Node.js

GCP

REST APIs

Git

Job description

Job Type: Internship

Compensation: $600–$800/month

Industry: E-commerce / Marketing Technology / AI

Gesture is an AI-driven connection company focused on creating meaningful real-world interactions between consumers and brands. Its products include a consumer gifting application and Gesture Reach360, a tangible marketing platform designed to connect brands with their target customers.

About the Role

Gesture is looking for a curious and motivated AI Full Stack Engineer Intern to work on production-facing features across its consumer application and Reach360 platform.

The role combines full-stack development with agentic AI, giving interns an opportunity to build and ship features across the frontend, backend, APIs, databases, and AI-driven workflows while working closely with experienced engineers.

Responsibilities

• Build and ship features across frontend, backend, and internal tools.
• Design and prototype agentic workflows using LangChain or LangGraph.
• Write clean, tested, and maintainable code.
• Work with APIs, databases, and frontend frameworks to deliver end-to-end functionality.
• Participate in code reviews and sprint planning.
• Debug and resolve issues across the entire stack.
• Collaborate with product and design teams to convert requirements into working software.
• Contribute to technical documentation and engineering best practices.

Requirements

• Currently pursuing a degree in Computer Science, Software Engineering, or a related field.
• Experience with LangChain, LangGraph, or other agentic AI development frameworks.
• Familiarity with the Fern stack: Firebase, Express, React, and Node.js is strongly preferred.
• Experience with Google Cloud Platform (GCP) is strongly preferred.
• Familiarity with modern frontend frameworks, preferably React.
• Knowledge of backend development using Node.js, Python, or a similar language.
• Understanding of REST APIs, databases, and Git.
• Strong problem-solving skills and attention to detail.
• Good time-management and organizational skills.
• Ability to work in a fast-paced environment and adapt to changing priorities.
• Personal projects, coursework, or internship experience in software development are beneficial.

What You'll Gain

• Real-world experience building and shipping full-stack and agentic AI features.
• Hands-on experience with production software.
• Mentorship and collaboration with an experienced engineering team.
• Exposure to a rapidly growing technology-driven company.
• Networking opportunities with industry professionals.
• Experience with modern development tools and AI frameworks.
• Professional development and career-growth support.
• Collaborative and friendly work environment.
• Free Gestures for friends and family.

Company Culture

Gesture promotes a KPI-driven and high-performance culture and looks for motivated individuals with a startup mindset. The role is suited for candidates who are comfortable taking ownership, adapting quickly, and contributing in a fast-moving environment.

The company emphasizes growth from a ground-floor opportunity, with the potential to develop alongside the organization.

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