Freelancers using React in Illinois

Freelancers using React in IllinoisFreelancers using React in Illinois

Projects People

Ethan Irimiciuc

Arlington Heights, USA

AI Automation Engineer | Python, OpenAI, Bots & Scraping

New to Contra

AI Automation Engineer | Python, OpenAI, Bots & Scraping

Cover image for Flagspill is an anonymous social

Flagspill is an anonymous social platform where users share short takes on relationship and dating situations, then vote them red flag, green flag, or contested "yellow flag." It's Reddit meets a polling app, focused on the moments people overthink and want a second opinion on. Features: Anonymous post and comment system with optimistic vote updates Multi-feed browsing (Hot, New, Top Today, Top Week, All Time) Yellow flag detection for contested posts where the community is split Responsive masonry grid layout that adapts cleanly across devices Real-time engagement metrics on every post Where it gets interesting is the moderation. Flagspill runs a multi-stage moderation pipeline using regex hard rules, heuristic spam and gibberish detection, and GPT-4o-based content review with rate limiting. Every submission goes through this pipeline before hitting the database, keeping the platform safe and useful at scale. Tech stack: React, TypeScript, Tailwind, Supabase for database and auth, OpenAI GPT-4o for moderation, deployed on Vercel. Built and shipped solo. Live at flagspill.com (http://flagspill.com).

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Cover image for Wildlife Quiz Platform for K-12: Enhance Classroom Learning

BioTrack is a wildlife education web platform built to help K-12 teachers create custom animal-themed quizzes, manage classes, and track student progress on biology learning. Teachers can build flashcard sets, assign quizzes to specific classes, and even request new animals to be added to the platform's database. Features: Teacher dashboard with class, student, assignment, and report tracking Custom quiz builder powered by an animal/wildlife database Classroom management with student rosters and assignment delivery Request Animal system for crowdsourcing new content to the platform Authentication and role-based access for teachers and students Built with React and TypeScript on the frontend, FastAPI and Python on the backend, with PostgreSQL for data persistence and a REST API connecting everything. This was a collaborative project I worked on with a team of four as part of a university software engineering course. I handled significant portions of the frontend architecture and API integration, working closely with backend and design teammates on a 12-week build cycle. Shipped as a working app deployed for active classroom users.

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Cover image for Steam Market Bot is an

Steam Market Bot is an automated trading platform for the CS2 skin marketplace. It scans thousands of Steam Community Market listings in real time, detects underpriced items, and surfaces profitable buy opportunities through a clean dashboard. The CS2 skin market moves on volume and speed. Manual traders miss opportunities because prices shift in seconds. This bot solves that by handling the scanning, monitoring, and decision logic continuously. Features: Real-time market scanning across thousands of listings Live dashboard with balance, active orders, scan cycles, and bot status Configurable item filters (float ranges, sticker conditions, price thresholds) Warm-up mode to safely initialize bot sessions without triggering rate limits Live activity log so users can audit every action the bot takes Built with FastAPI, React, TypeScript, Python, Selenium, and the Steam Community Market API. Deployed with a PostgreSQL backend for trade history and analytics. This was a personal project that turned into a real tool. I built it to handle my own CS2 trading and shipped a polished version for others to use.

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Cover image for MixerAI is a Chrome extension

MixerAI is a Chrome extension that consolidates ChatGPT, Claude, Gemini, and Perplexity into a single dashboard. Most heavy AI users are paying for 2-4 subscriptions and constantly switching tabs to use the right model for the right task. MixerAI fixes that. Features: Unified connection status for all major AI services in one panel Smart subscription tracking so you can see which plans you're on across providers Plan recommendation engine that suggests Free vs Pro vs Max tiers based on your usage patterns Single task input that routes your prompt to the best-suited AI for the job Built with TypeScript, React, Chrome Extensions API, Tailwind, and integrations with OpenAI, Anthropic, Google, and Perplexity APIs. This project came from frustration with my own AI tool sprawl: four tabs open, two paid subscriptions I wasn't fully using, and no system for deciding which model to ask. MixerAI is the tool I built to solve that for myself, and now I'm shipping it for others.

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proChicago, USA

Fractional Head of Design | Growth Systems for Businesses

6: Followers

Fractional Head of Design | Growth Systems for Businesses

Cover image for Invisibly — Product Design + Front-End Build (B2B Ad-Tech)

Invisibly — Product Design + Front-End Build (B2B Ad-Tech)

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Cover image for Design System and User Flow Development for CartStack

Design System and User Flow Development for CartStack

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Cover image for PayRecs | UI/UX Design for international fintech startup

PayRecs | UI/UX Design for international fintech startup

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Cover image for chexpass | UI/UX design for B2B SAAS product

chexpass | UI/UX design for B2B SAAS product

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Elliott Crifasi

proChicago, USA

Innovative Fullstack DevOps Engineer

Innovative Fullstack DevOps Engineer

Cover image for Nike Label Audit Tool

Nike Label Audit Tool

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Cover image for Atlanta Hawks: DevOps Transformation

Atlanta Hawks: DevOps Transformation

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Cover image for Ultra: Site Health Monitor Nike.com

Ultra: Site Health Monitor Nike.com

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Full-Stack Engineer | MVP Builds, UI/UX & Systems

New to Contra

Full-Stack Engineer | MVP Builds, UI/UX & Systems

Cover image for Production-ready interactive platform shipped in

Production-ready interactive platform shipped in under one week — full design through deployment — at ~$30 total cost versus an estimated $10–20K agency quote. Built a highly interactive UX-focused platform featuring context-aware scroll indicators, a persistent non-disruptive audio player, frictionless minimal navigation, and copy-friendly UX for structured content. Full ownership across design, development, and deployment using an AI-augmented workflow. MY ROLE - Full ownership — design, development, deployment - AI-augmented workflow using ChatGPT + GitHub Copilot KEY FEATURES - Context-aware scroll indicators - Persistent, non-disruptive audio player - Frictionless minimal navigation - Copy-friendly UX for lyrics and structured content RESULTS - Full production build in under one week - ~$30 total build cost vs $10–20K agency estimate - Live in production at noahhenrymusic.com (http://noahhenrymusic.com)

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Cover image for Cut call initiation to 1-2 clicks, zero lost leads

Cut call initiation to 1-2 clicks, zero lost leads

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Cover image for Rebuilt real-time video conferencing system in 2 weeks

Rebuilt real-time video conferencing system in 2 weeks

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Cover image for Reduced engineering dependency for customer

Reduced engineering dependency for customer configuration — rebuilt a deprecated portal into a flexible self-service admin system. Customers now configure real-time workflows without developer involvement. Rebuilt a legacy platform into a modular, extensible admin system with a queue builder using attribute-based routing logic, hours-of-operation management with exception handling, and a scalable architecture designed for long-term growth. MY ROLE - Led system design and frontend architecture - Implemented core admin interfaces and workflows - Collaborated on backend extensions - Drove customer adoption of new tooling DELIVERABLES - Queue builder with attribute-based routing logic - Hours-of-operation management with exceptions - Modular, extensible admin architecture RESULTS - Reduced engineering dependency for customer configuration changes - Improved scalability of onboarding and customer support workflows - Customers self-configure real-time workflows without developer involvement

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Cloud Engineer with 10 years delivering enterprise solutions

10: Followers

Cloud Engineer with 10 years delivering enterprise solutions

Cover image for Portfolio | IT Cloud Infrastructure Engineer

Portfolio | IT Cloud Infrastructure Engineer

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Cover image for First look at a multi-tenant SaaS platform I am building for...

First look at a multi-tenant SaaS platform I am building for dental equipment service companies. This Maintenance Management System (MMS) streamlines asset tracking, work order management, and parts inventory across multiple organizations. Built from scratch with enterprise-grade architecture including role-based access control, automated work order workflows, and real-time data synchronization. Tech Stack: React, Node.js/Express, PostgreSQL with Prisma ORM, Firebase Auth, Google Cloud Build, Google Cloud Run

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Cover image for Priority based task manager

Priority based task manager

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Cover image for AI pantry tacking and meal planning

AI pantry tacking and meal planning

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David Yerrington

AI Agent Architect & Data Science Strategist

AI Agent Architect & Data Science Strategist

Cover image for Custom PDF Processing with AI

Custom PDF Processing with AI

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Cover image for USAID - Instagram Sentiment AI Agent

USAID - Instagram Sentiment AI Agent

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Cover image for Mail Response Agent + Consulting - AgentDomo.AI

Mail Response Agent + Consulting - AgentDomo.AI

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Dorian Shekomba

Full Stack | AI Engineer | CI/CD

6: Followers

Full Stack | AI Engineer | CI/CD

Cover image for Developed a full-stack AI-powered trading

Developed a full-stack AI-powered trading platform that enables strategy creation, backtesting, live trade execution, and performance analytics. Designed modular architecture for strategy management, trade lifecycle tracking, and real-time market data processing. Implemented scalable REST APIs and WebSocket services to support low-latency trading and dynamic portfolio monitoring. Integrated AI models for signal generation, risk assessment, and trade optimization using historical and live market data. Built secure authentication, role-based access control, and ACID-compliant transaction handling to ensure financial data integrity. Deployed on cloud infrastructure with automated processes for high availability and continuous performance monitoring.

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Cover image for Built a secure, full-stack online

Built a secure, full-stack online banking system enabling 24/7 account access, fund transfers, bill payments, and transaction management across web and mobile platforms. Designed RESTful APIs, optimized database queries, and implemented real-time transaction updates to ensure high performance, scalability, and seamless user experience. Implemented advanced security features including JWT authentication, multi-factor verification, encrypted data transmission (SSL/TLS), role-based access control, and fraud-prevention logic. Architected ACID-compliant transaction handling, audit logs, and production-ready deployment with Nginx and process management for high availability.

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Cover image for Digital Wealth Partners - Gateway to Digital Investments

Digital Wealth Partners - Gateway to Digital Investments

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Cover image for Developed a high-performance reservation system

Developed a high-performance reservation system for airport parking, enabling users to quickly find, compare, and secure parking spots through an intuitive search and checkout flow. Architected a modular backend to manage inventory, pricing logic, booking validation, and automated confirmation workflows while ensuring data consistency across transactions. Integrated secure online payments, real-time availability updates, and automated email notifications to streamline the end-to-end booking experience. Implemented admin-level controls for managing locations, rates, promotions, and reporting insights. Optimized frontend performance, SEO structure, and server configuration to improve traffic acquisition, conversion rates, and overall platform reliability.

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Expert Web Developer for Fortune 500 & Startups

Expert Web Developer for Fortune 500 & Startups

Cover image for Marisol Adler

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Cover image for Your first impression should

Your first impression should

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Cover image for Eileen | Home

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