Senior Full Stack Developer (100% Remote)

Stack

Responsibilities

• ▹Plan, architect, and develop Shopify apps, plugins, and API integrations
• ▹Full-stack development with modern technologies on the frontend (React, Next.js) and backend (Node.js, Express, TypeScript)
• ▹Connect third-party systems (ERP, payment, CRM, logistics) via REST and GraphQL interfaces
• ▹Ensure performance, code quality, and scalability
• ▹Implement responsive and accessible UI components
• ▹Perform code reviews, testing (unit, integration, E2E), and debugging
• ▹Build and maintain CI/CD pipelines and technical documentation
• ▹Work closely with design, product, and QA to build products from the ground up
• ▹Mentor junior developers and actively shape the technical roadmap

Requirements

• ▹At least 5 years of experience in full-stack development
• ▹Very good knowledge of JavaScript, TypeScript, React, Next.js, Node.js, and Express
• ▹Solid database know-how (MongoDB, PostgreSQL, or MySQL)
• ▹Routine with Git, CI/CD, Docker, and modern DevOps workflows
• ▹Understanding of UX/UI, API design, security (OAuth, JWT, CORS), and performance optimization
• ▹Independent, structured, solution-oriented way of working
• ▹Native-level German and good English

Nice to have

• ▹Experience with Shopify App development, including Polaris, Webhooks, OAuth, and the GraphQL API

Soft skills

What we offer

• ▹€50,000-€80,000 base salary + performance-based commission
• ▹Maximum ownership and trust
• ▹30 days of vacation plus days off for your birthday and Christmas
• ▹Motivated team in a high-performing environment
• ▹Flat hierarchy, short decision paths
• ▹100% remote, with an optional office in Mannheim
• ▹Team events and off-sites
• ▹Top-tier Apple hardware

About the company

HeroSoftware develops Shopify apps for more than 3,500 Shopify merchants.