
Kristopher Prince
Verified Expert in Engineering
React Developer
Overland Park, KS, United States
Toptal member since May 6, 2026
Kristopher is a senior React and React Native engineer with 10+ years of experience shipping mobile and web products at scale. He works on greenfield product development, complex state management, and App Store and Play Store delivery. Kristopher is skilled at React 19, React Native, Expo, Next.js, TypeScript, Node.js, Postgres, and Supabase. He has additional experience in ESP32, BLE, and embedded prototyping.
Portfolio
Experience
- React - 10 years
- Mobile Development - 8 years
- React Native - 8 years
- TypeScript - 8 years
- Node.js - 6 years
- Supabase - 5 years
- Next.js - 3 years
- PostgreSQL - 3 years
Preferred Environment
MacOS, WebStorm, GitHub, Vercel, PostgreSQL, React, React Native, TypeScript, Node.js, Claude Code
The most amazing...
...thing I've shipped was Unleashed AI, a QR-coded pet platform with AI photo cleanup, lost pet alerts, and a full React Native back-end delivered end-to-end.
Work Experience
Senior React Native Developer
Black & Veatch
- Built and maintained an offline-first iOS and iPad time attestation app in React Native, backed by Azure Functions for sync and authentication.
- Served as the primary technical liaison between the development team and business stakeholders, translating product requirements into shipped work.
- Implemented full i18n internationalization with documentation and a Husky pre-commit script that enforced translation coverage and blocked untranslated keys.
- Designed and executed a stress testing strategy for two production applications using Azure Load Testing with Apache JMeter scripts, simulating incremental load increases across concurrent user tiers.
- Developed a custom Python script that parsed Azure Load Testing output and generated structured performance reports for engineering review.
Mobile Team Lead
Draiver
- Led the mobile team through a critical transition after a sudden senior departure in week two, inheriting a destabilized codebase and delivering the production release on the original deadline.
- Architected and managed a phased international rollout of two React Native apps across multiple regions using AppCenter's gradual release channels.
- Mentored a mid-level developer to full ownership of the application lifecycle, including releases, hotfixes, and direct stakeholder communication.
- Modernized the CI/CD pipeline with Jenkins and AppCenter, streamlining multi-platform releases across iOS, Android, and alpha test channels.
Senior Software Engineer
Intent
- Built a geospatial pipeline that automatically identified farm boundaries from tractor GPS telemetry and drone imagery, generating clean parcel overlays for downstream platform use.
- Architected scalable Node.js and PostgreSQL backends capable of processing large geospatial datasets with zero downtime during ingest and visualization.
- Developed a React data visualization application on AWS that automated geospatial workflows for non-technical business users, reducing manual map preparation work.
Lead Front-end Developer
6 Degrees Health
- Built MediVI, a HIPAA-compliant healthcare data platform delivering provider search, case submission, and live case updates to members across iOS, Android, and web.
- Migrated a C# monorepo to GoLang for an insurance provider network lookup service, improving performance and maintainability of a core HIPAA-regulated system.
- Architected React Native frontends in TypeScript for three internal insurance tools and managed CI/CD pipelines for both Android and iOS releases.
Senior Technology Specialist
VMLY&R
- Took ownership of an over-engineered offshore React Redux codebase and delivered a Hill's Pet Nutrition product recommendation tool to PetSmart veterinary locations, replacing the previous failed delivery attempt.
- Built a collaborative authoring application for NWEA MAP assessment question writers, enabling real-time multi-user question development workflows across distributed teams.
- Worked across multiple high-profile enterprise clients over three years, translating creative and product requirements into shipped React applications.
Experience
Engineering Portfolio
http://dontpanic.fyiContents include live engineering decision writeups, a code gauntlet, a schema-to-table demo, testing and CI tabs, Swagger/tRPC examples, and a Poker Defense game with a live Supabase leaderboard. The mobile section showcases shipped React Native work: Derby Day Pool (a Kentucky Derby betting pool app on TestFlight), Unleashed AI (a QR-coded pet platform with AI photo cleanup, a lost pet network, and a full React Native back end), and Proof (a BLE scale-bar inventory app).
MenuTranslator
https://kcmenu.buildPrototypeWorkshop
Education
Bachelor's Degree in Computer Science
DeVry University - Kansas City, MO, USA
Certifications
React Native – The Practical Guide
Udemy
AWS Serverless APIs and Apps – A Complete Introduction
Udemy
React – The Complete Guide 2024 (Including React Router and Redux)
Udemy
Understanding Typescript
Udemy
Build a RESTful API with Node.js, Express, and PostgreSQL
Udemy
Node.js – The Complete Guide (MVC, REST APIs, GraphQL, Deno)
Udemy
Node.js – API Development with Swagger
Udemy
The Complete Leadership Mastery Course
Udemy
React Query/TanStack Query: React Server State Management
Udemy
Learn How to Code: Google's Go Programming Language
Udemy
Skills
Libraries/APIs
React, Node.js, React Query, OpenAPI, REST APIs, React Router, Claude API, Google Maps API, Google Places API, Stripe API
Tools
Claude, WebStorm, GitHub, Expo, Apache JMeter, Jenkins, Visual Studio App Center, Claude Code
Languages
TypeScript, JavaScript, Go, GraphQL, Python
Frameworks
React Native, Redux, Next.js, Tailwind CSS, Swagger, Express.js
Paradigms
Rapid Mobile Application Development (RMAD), Mobile Development, HIPAA Compliance
Platforms
AWS IoT, AWS Lambda, Amazon Web Services (AWS), MacOS, Vercel, Azure Functions, iOS, Android, Drone CI
Storage
PostgreSQL, Amazon DynamoDB, PostGIS
Other
Communication, Software Development, Mobile App Development, Web Development, Front-end Development, i18n, CI/CD Pipelines, Full-stack, Artificial Intelligence (AI), Prompt Engineering, Internet of Things (IoT), Architecture, Technical Leadership, Railway, Supabase, Anthropic, Tanstack Query, Application State Management, Leadership, Team Management, API Gateways, Serverless, Azure Load Testing, iPadOS, Team Leadership, Team Mentoring, Enterprise Software, AI/ML Workloads, Resend, Geospatial Data, GPS, Telemetry, HIPAA, SOX Compliance, Geofencing, AI Programming, Push Notifications
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