Express JS Jobs

Finish and release four existing apps (React Native/Expo, Node/Postgres, React) for a US-based IoT vending device. The build work is done: these apps took about six months to build and are functionally complete. This job is verified production release, not a new build, and it is priced that way. WHERE IT STANDS The four apps are built and functionally complete: a customer app (React Native/Expo), a service app (React Native/Expo), a backend (Node/Express/Postgres with Stripe) and a React admin dashboard. Tens of thousands of automated tests have been run across the codebases. Each has existing CI, open pull requests, a written release procedure and detailed evidence. What remains is acceptance on real systems: production, real phones and the payment provider. THE WORK 1. Verify the exact...

This project has been replaced by a revised post titled 'Release Four Complete IoT Vending Apps'. Please bid there. Bids on this post are no longer being reviewed.

I am currently working on an existing CRM web application and need an experienced developer to help me fix a few issues in the project. The project is already developed, so I am NOT looking for someone to rebuild the CRM from scratch. I mainly need 1–2 hours of hands-on technical help from someone experienced with the existing stack. What I need help with: Identify and fix existing backend/API issues Debug code Resolve frontend-to-backend communication problems Fix request/response or JSON-related issues Check existing API logic and suggest corrections Explain the root cause of the issues so I can continue working on the project myself This is a short-term debugging/mentoring task, expected to take around 1–2 hours. I would prefer someone who has strong experience wit...

Mehrere Vollzeitentwickler oder eingespieltes Team für eigenständige WEG-Plattform gesucht Verbindlicher Projektstart: 12. Oktober 2026 Wir suchen mehrere erfahrene Entwickler oder ein eingespieltes Team für die Entwicklung einer eigenständigen, cloudbasierten Plattform zur WEG-Verwaltung. Unser bestehendes Eigentümerversammlungsportal soll integriert und weiterentwickelt werden. Die Hauptentwicklung soll zügig zu einer vollständigen, geprüften und produktiv nutzbaren Version führen. Kleinere Restarbeiten nach der Hauptlieferung sind möglich. Verbindliche Voraussetzungen - Jeder beauftragte Entwickler arbeitet während seiner Projektphase grundsätzlich etwa 40 Stunden pro Woche am Projekt. - Wir suchen mehrere Entwickler. Einze...

I’m ready to launch a new social-networking web application and need a solid technical foundation first. Your main focus will be designing and configuring the complete network environment that will host the platform—router and switch selection, VLAN design, firewall rules, VPN access, redundancy strategy, and clear diagrams so the setup can be replicated or scaled later. Once the backbone is defined, we’ll move straight into the web application itself. I want a browser-based social network built with a modern, well-documented stack; feel free to recommend React, Vue, Node.js, Django, or whatever you’re most efficient with, as long as it is secure, modular, and future-proof. Core features include user registration/login, profile management, friend/follow mechanics...

I am looking to build a cutting-edge online casino website featuring progressive jackpot slot games and incorporating cryptocurrency transactions. Here are my requirements: - Implement a variety of exciting and engaging slot variants with a focus on progressive jackpot slot machines. - The website should be designed to support cryptocurrency transactions, offering an innovative and secure way for users to enjoy their gaming experience. An ideal candidate should: - Have experience developing betting websites, particularly online casinos. - Show a strong understanding and knowledge of integrating cryptocurrency payments. - Be experienced in designing engaging and successful slot machine games, specifically progressive jackpot slots.