Search Results for: React

Here's a job description you can post on Upwork: --- **Full-Stack Developer (C#, React, SQL) – Long-Term, Part-Time Engagement** We are seeking a highly qualified and experienced full-stack developer for a long-term, part-time engagement. This role requires a strong commitment to working a few hours per week over multiple years, ensuring a steady stream of repeatable work. The ideal candidate must...

Job Type: Hourly: $70.00 - $85.00

Contractor Tier: Hourly: $70.00 - $85.00

C# React

I’m looking for a skilled full-stack developer with hands-on experience building applications inside Replit to take over a well-structured SaaS prototype and continue development through launch and beyond. The app is built using React (Next.js with TypeScript), Next.js API routes, and PostgreSQL, all hosted and deployed via Replit’s cloud environment. The platform features multi-tenant architectur...

Job Type: Hourly: $30.00 - $60.00

Web Design JavaScript Web Development CSS React Node.js PostgreSQL Replit

Description: We're looking for a part-time Frontend Engineer with strong skills in React, Next.js, and Ant Design to help us revamp the UI/UX of an existing business application. This is not a greenfield project—you’ll be working within an established app to modernize and streamline the interface for a better user experience. While some screens will have existing wireframes or design guidance, man...

Job Type: Hourly: $40.00 - $70.00

User Experience Design JavaScript React Web Application Node.js Web Development

We're seeking a skilled developer to join our team working on Aerotage's AI-powered. This cutting-edge Electron application integrates modern TypeScript, React, and AI capabilities (OpenAI and Anthropic). This is a desktop app with Model Context Protocol integration to LLMs. Video interview and government ID is required.

Job Type: Hourly: $70.00 - $85.00

TypeScript AI Agent Development React API Electron

I'm looking for an experienced full-stack developer to help build an MVP for a digital tipping platform that allows customers to easily tip service staff via QR code and Stripe Checkout — with a rewarding, social twist. This is a mobile-first web app (not a native app) with Stripe Connect (Express) as the core infrastructure for payments and payouts. What You’ll Be Building: QR Code Tip Flow: Cust...

Job Type: Hourly

React Node.js Vercel Stripe Firebase

I've created a SaaS application in loveable that is nearing completion but in need of debugging at a higher level than my expertise permit. As it stands, I have a working user invitation and authentication process in place and functional webpage that features an embedded chatbot behind a paywall (using supabase and stripe integration). I need help debugging errors in user type persistence to get t...

Job Type: Fixed price

Database Design API SaaS CSS React Node.js Database Architecture JavaScript SQL API Integration

I’ve built a simple trading-strategy site with a React frontend and Python backend that leverages an AI model to generate buy/sell signals. I need a developer to swap in a new pretrained model, update the backend inference pipeline, and adjust the UI to surface its outputs (parameters, confidence scores, visualization). Scope of Work: Model Integration Replace the existing model with the provided ...

Job Type: Fixed price

React Flask Python JavaScript API Machine Learning

Hi Freelancers, We are looking for an experienced Frontend Developer to help us implement UI enhancements and fix several UI-related bugs for our web application, "Story Stream" (built with React, Next.js, Tailwind CSS, and Supabase). Story Stream is a tool designed to help writers analyze and structure their books. This project involves tackling a specific list of UI-focused tasks derived from ou...

Job Type: Fixed price

Next.js Tailwind CSS GitHub React JavaScript Communication Skills Supabase

Project Overview EZGo Cars is a fast‑growing automotive‑technology startup modernizing online car auctions. We’re rebuilding our live auction web app in React to deliver lightning‑fast bidding, real‑time vehicle data, and a best‑in‑class user experience. We need a talented front‑end engineer in the Greater Los Angeles area who can collaborate closely with our back‑end team (Node/Express, PostgreSQ...

Job Type: Hourly: $40.00 - $70.00

Web Application React JavaScript Node.js CSS API Websockets JSON API Socket.io

Position: Founding Lead Engineer (Full Stack) Mission / Purpose of This Role You will be the technical co-pilot for building and scaling the first real version of our AI-powered operations platform. Your mission is to design, build, and launch a clean, scalable MVP that: - Provides AI-enhanced reporting and incident detection to security companies. - Is stable enough to onboard paying clients. - S...

Job Type: Hourly: $50.00 - $75.00

AI App Development API Integration AI Bot AI Agent Development AI Model Integration API Development Customer Relationship Management Node.js React