Portfolio

Evan Ritzcovan

Frontend systems, modern UX, and agentic AI workflows.

Frontend engineer transitioning into agentic AI development, focused on building responsive interfaces, structured workflows, and practical AI-driven user experiences.

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Projects

Selected work

A collection of full-stack and frontend systems including authenticated applications, API-driven products, interface design work, and applied LLM-based features.

Featured

AI habit tracker

Structured behavior change with AI-generated action plans.

A mobile habit-building and habit-breaking application that generates structured, checklist-driven plans using OpenAI, helping users focus on daily execution through streaks, tracking, and a focused Today view.

Problem

Most habit apps focus on tracking alone and leave users guessing how to actually change behavior. This project combines structured AI-generated plans with daily execution workflows to reduce friction between intention and action.

Highlights

AI-generated habit plans with structured JSON schema validation and actionable checklist steps
Plan versioning system with regeneration, difficulty adjustment, and rollback support
Full-stack architecture using React Native, Supabase Auth/Edge Functions, and AI orchestration workflows

React NativeExpoTypeScriptSupabaseOpenAI API

View on GitHub

More projects

Smaller systems, experiments, and completed builds beyond featured work.

Kanbas
A full-stack learning management system with role-based access, authentication, assignments, grading, and file submissions.
ReactNode.jsExpressMongoDBRenderNetlify
Source
Foodfinder
A full-stack restaurant discovery app using the Yelp API with authentication and user-specific bookmarking across shared profiles.
ReactNode.jsExpressMongoDBRenderNetlify
Source
Personal portfolio
A component-driven portfolio site built with a structured layout system and optimized for fast, accessible rendering.
ReactNext.jsTypeScriptTailwind CSSFramer Motion
Source

About

Overview

I’m a frontend and mobile developer with experience building production applications, maintaining live systems, and working on full-stack web projects in production environments.

Frontend & UI engineering

Built with React and React Native, focused on responsive interfaces, reusable component systems, and production user-facing features.

AI Systems

Exploring structured LLM workflows using OpenAI APIs, including prompt design, stateful application patterns, and retrieval-based context systems with Supabase.

Building & Iteration

I prefer working through implementation and feedback loops—turning product ideas into working systems and refining them through iteration rather than upfront abstraction.

Stack

Technologies

Frontend and full-stack JavaScript development with experience in API integration and emerging LLM-based application features.

Web

React
Next.js
Tailwind CSS
Framer Motion
shadcn/ui

Mobile

React Native
Expo
Redux
AsyncStorage
UI Architecture
Authentication Flows

Backend

Node.js
Express
REST APIs
MongoDB
Mongoose
Supabase
Express Session

AI / LLM

OpenAI API
Function calling
Structured output
Prompt design
RAG patterns
Vector databases

Languages

TypeScript
JavaScript
Python
C++
Java
HTML
CSS

Infrastructure

Vercel
Netlify
Render
Git

Contact

Get in touch

Open to frontend, product engineering, and AI-focused software roles. Best way to reach me is by email—links below are always current.