Full Stack & AI Engineering Intern - Denver On-Site

Location: ONSITE / IN-OFFICE Denver Internship Duration: 6 MONTHSDepartment: AI Operations and EngineeringType: Internship | Part-Time | Paid | $800-$1600 per month

Gesture is where technology meets humanity — a place where innovation, emotion, and impact collide.

 We’re a fast-growing tech company using AI, machine learning, and intelligent logistics to power a first-of-its-kind platform that connects people and brands through real-world, tangible experiences. From our mobile app to our B2B Reach360 platform, Gesture blends data, emotion, and automation to build the future of human connection — at scale.

Inside our Denver Office, you’ll find an environment that moves with the pace and precision of Silicon Valley but with the heart of something far greater.We run on cutting-edge tools, creative experimentation, and raw ambition.

Every project, every campaign, every moment you work on here matters — because it’s seen, felt, and experienced by real people around the world.

At Gesture, you’ll work alongside some of the smartest, most driven operators, engineers, and creatives in the industry — people who think big, move fast, and care deeply about the work they do.This is a front-row seat to the future of connection.

If you want to help build something that’s changing how the world interacts, welcome to Gesture.

Gesture is investing aggressively in AI-driven intelligence to power the next generation of marketing and commerce using a gift-centric approach. Our roadmap focuses on:Building intelligence that anticipates, adapts, and compounds—predicting intent, optimizing campaigns in real time, and delivering deeply personalized experiences driven by real-world behavior, all through systems that continuously learn and improve with every interaction.This is not surface-level automation. We’re building intelligence directly into the core of how campaigns are planned, executed, and measured—at scale.At Gesture, you’re not joining a static MarTech company.

You’re joining a team building the infrastructure for how brands will compete in a post-digital-fatigue world.

Gesture is building the next evolution of emotionally intelligent consumer engagement. As an Engineering Intern, you will work alongside senior engineers and product leaders to develop AI-driven tools for our Operations (Marketing, Sales, Fulfillment) team to utilize to optimize and scale our model.This role is hands-on. You will contribute production-level code to systems utilized internally to drive automation, keeping our team working on projects that truly move the needle while learning how engineering, product, and data come together inside a fast-growing technology company.What You'll DoAI Engineering and Personalization Development• Support the design and implementation of data models, predictive pipelines, and recommendation logic for personalization across the internal Gesture ecosystem.• Contribute to algorithms that translate user behavior into engagement cycles, rewards, and individualized experience pathways.Loyalty and Engagement Infrastructure• Assist in building backend components that power user incentives, behavioral triggers, and reward systems.• Help develop logic that connects user signals (sending patterns, interaction frequency, referrals, etc.) to loyalty outcomes and campaign eligibility.Full Stack Feature Development• Collaborate with the mobile team (React Native) to integrate AI-driven recommendations, dynamic feeds, and adaptive notification patterns.• Develop backend services that support A/B testing, targeted campaigns, personalized prompts, and customer journey flows.Systems Integration and Data Flows• Work on API integrations between Firebase, Zoho CRM, Segment, Voucherify, and internal data systems.• Assist in ETL workflows, data ingestion, and ensuring data quality across the ecosystem.Scalability, Performance, and Quality• Participate in performance optimization, load testing, and architecture enhancements.• Learn best practices for building systems designed to scale to millions of users.Cross-Functional Collaboration• Work with product, data science, marketing, and design teams to convert behavioral insights into consumer-facing features.Technical Stack ExposureFrontendReact, React Native, TypeScript and FERN stackBackendPython (FastAPI, Express)Data & StorageFirestore, PostgreSQL, BigQueryCloud & InfrastructureGoogle Cloud Platform (Firebase, Cloud Functions, Pub/Sub, Cloud Run)AWS (select services)Docker, GitHub Actions, CI/CD pipelinesAI / Machine LearningTensorFlow, PyTorch, scikit-learnOpenAI and LangChain frameworks for LLM-driven personalizationCRM / Marketing PlatformsTwilio Segment, Zoho CRM, Voucherify, OneSignal

AI / Machine Learning• Fundamental understanding of predictive modeling and recommender systems• Familiarity with prompt engineering or LLM APIs• Interest in behavioral scoring and personalization systemsFull Stack Engineering• Experience with React or React Native• Proficiency in backend development with Python• Exposure to Firebase or GCP services is a strong plusData Architecture• Understanding of API integrations, ETL, and third-party data flowsDevOps & Deployment• Some experience with Docker, testing frameworks, and automated pipelines• Interest in serverless infrastructure and continuous deploymentSecurity and Compliance• Awareness of data handling best practices, including privacy and regulatory considerationsBehavioral Traits• Customer-obsessed and motivated by improving user experience• Strong ownership mentality with the ability to move ideas from concept to production• Analytical and creative problem-solving ability• Rapid learner with curiosity about new AI tools, frameworks, and SDKs• Emotionally intelligent, understanding the human impact of technology• Clear communicator who collaborates effectively across teams

• Pursuing a degree in computer science, engineering, data science, or equivalent technical experience• Prior work or project-based experience in full stack development, AI engineering, or mobile app development• Exposure to personalization engines, loyalty systems, or recommendation algorithms is a plus• Startup or fast-paced engineering environment experience is beneficial

Meaningful, Shippable WorkEvery intern contributes to features that go live in the product. No shadow projects.Professional Development and Mentorship• Direct mentorship from senior engineers• Biweekly sessions with executives and division leads• Structured growth guidance and portfolio developmentLeadership and Strategy Exposure• Invitations to the Founders’ Roundtable where strategy, scaling, and fundraising are discussed• Opportunities to observe how product and technical decisions are made at leadership levelAI Innovation Environment• Access to Gesture’s internal AI Playground for prototyping and experimentation• Guided learning on how AI integrates with product, logistics, and consumer experience

A resume outlining relevant experience.

A brief cover letter highlighting your key skills, achievements, and what excites you about this opportunity.

Any project work, portfolio samples, or coursework that demonstrate your passion and abilities.


The ideal candidate will thrive in a startup environment, embodying curiosity, grit, and a builder’s mindset. This is a ground-floor opportunity to grow alongside one of the most exciting and innovative companies redefining connection through technology.Apply today to join Gesture and be part of the team that’s redefining how the world connects.Join the Movement
! If you’re ready to lead by doing, grow fast, and make an impact that matters — we want to hear from you.