Parttime React Js Developer Jobs in Colorado (NOW HIRING)

Location: ONSITE / IN-OFFICE Denver

Internship Duration: 6 MONTHS

Department: AI Operations and Engineering

Type: Internship | Part-Time | Paid | $800-$1600 per month

Immediate Openings Only: Please note that this internship is for candidates who can interview and start right away. Gesture is NO LONGER accepting future-dated applications for Summer 2026. PLEASE DO NOT APPLY UNLESS you are available to begin interviewing asap, and if selected, you can start immediately

About Gesture

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.

Where We're Headed
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 compoundspredicting 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 measuredat 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.

About the Role

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 Do

AI 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 Exposure
Frontend
React, React Native, TypeScript and FERN stack

Backend
Python (FastAPI, Express)

Data & Storage
Firestore, PostgreSQL, BigQuery

Cloud & Infrastructure
Google Cloud Platform (Firebase, Cloud Functions, Pub/Sub, Cloud Run)
AWS (select services)
Docker, GitHub Actions, CI/CD pipelines

AI / Machine Learning
TensorFlow, PyTorch, scikit-learn
OpenAI and LangChain frameworks for LLM-driven personalization

CRM / Marketing Platforms
Twilio Segment, Zoho CRM, Voucherify, OneSignal
Preferred Core Skills and Competencies and Technical Skills
AI / Machine Learning
Fundamental understanding of predictive modeling and recommender systems
Familiarity with prompt engineering or LLM APIs
Interest in behavioral scoring and personalization systems

Full Stack Engineering
Experience with React or React Native
Proficiency in backend development with Python
Exposure to Firebase or GCP services is a strong plus

Data Architecture
Understanding of API integrations, ETL, and third-party data flows

DevOps & Deployment
Some experience with Docker, testing frameworks, and automated pipelines
Interest in serverless infrastructure and continuous deployment

Security and Compliance
Awareness of data handling best practices, including privacy and regulatory considerations

Behavioral 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
Preferred Background
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
What You'll Gain at Gesture
Meaningful, Shippable Work
Every 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 development

Leadership 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 level

AI 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

Application Process - Interested candidates should submit the following

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.

Download The Gesture App

We strongly encourage all applicants to download the Gesture app and explore our platform firsthand. You can also visit gesture.vip to learn more about our mission, technology, and culture.

Culture

At Gesture, we operate with a KPI-driven, pacesetting culture one that rewards sharp, motivated, high-performing individuals who take initiative and execute with excellence.

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.