Results for "Ruby on Rails"

Middle/Senior React Developer - part time

your mission As a Frontend Engineer at Index, you will primarily focus on building and optimizing high-quality, performant, and SEO-friendly web applications using React and Next.js. You will work closely with product, design, and marketing teams to ensure excellent user experience, strong Core Web Vitals, and reliable analytics and tracking. This role is ideal for a strong mid-level frontend engineer who takes ownership of UI quality and performance and is motivated to gradually expand into backend development (Ruby on Rails and Python) with mentorship and support. Key Responsibilities Frontend Development (React / Next.js) Build and maintain React and Next.js components, pages, and application logic. Implement responsive, accessible, and SEO-optimized UI using modern CSS approaches. Troubleshoot and fix bugs in the existing frontend codebase. Identify and resolve frontend performance issues (code splitting, memoization, lazy loading). Monitor and optimize Core Web Vitals in collabor

Senior Full Stack Developer - Ruby on Rails & React (m/w/d)

hey du :) Du hast Lust, echten Impact im Shopify-Ökosystem zu machen - mit sauberem Code, durchdachter Architektur und Apps, die Händler:innen wirklich weiterbringen? Dann bist du bei uns genau richtig. Wir suchen eine:n Senior Fullstack Developer:in (Ruby on Rails & React), die/der unser Apps-Team technisch stärkt, Verantwortung übernimmt und unsere Shopify Apps auf das nächste Level hebt. Bei uns arbeitest du nicht nur an spannenden Shopify-Apps, sondern hast auch die Freiheit, technische Entscheidungen aktiv mitzugestalten - von Architektur über Patterns bis zum Mentoring des Teams. deine mission Weiterentwicklung & Ownership Du entwickelst unsere bestehenden Shopify Apps weiter und sorgst für Stabilität, Performance und saubere Codequalität Du konzipierst neue Features & Epics - skalierbar, wartbar, pragmatisch Du übernimmst technische Verantwortung: Architektur planen , Risiken früh erkennen, sinnvolle Patterns etablieren Neuentwicklung & Produktzusammenarbeit Du

Fullstack (RoR/ React/ React Native)

Join a team that’s building the core digital infrastructure for a fast-growing staffing-tech platform. Our client is changing the game for small and mid-sized businesses, creating a fully automated marketplace where staffing requests, bookings, and invoicing all happen online. We’re looking for a hands-on Full-Stack Developer (AI-Native) who doesn’t just write code, but actually shapes how AI-powered automation works in production. You’ll own parts of the backend, build AI-assisted features, and make sure things scale smoothly—no endless meetings, no “best practice” buzzwords unless they actually make sense. Requirements Must-have: Strong experience in Ruby on Rails in production environments Knowledge of React Native and TypeScript/JavaScript Experience with PostgreSQL and AWS Ability to build scalable, reliable systems Hands-on experience with AI-assisted development tools and validating AI-generated code Nice-to-have: Experience building high-performance microservices in Rust, C++,

Full Stack Developer (RoR/React/React Native)