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appsoluts GmbH

Backend Software Engineer – Coding, Modern Tech Stacks

appsoluts GmbH

Backend Software Developer developing applications with Ruby on Rails and Node.js. Seeking individuals with AI and modern tech stack experience.

Posted 5/16/2026full-timeDüsseldorf • 🇩🇪 GermanyMid-LevelSenior💰 €60,000 - €68,000 per yearWebsite

Tech Stack

Tools & technologies
AWSCloudGoogle Cloud PlatformJavaScriptKubernetesNode.jsRubyRuby on RailsTypeScript

About the role

Key responsibilities & impact
  • Develop backend applications with Rails and Node.js
  • Maintain and extend existing systems, scaling them for growth
  • Think in terms of infrastructure: containers, Kubernetes, cloud (AWS/GCP)
  • Take ownership: operations, monitoring & DevOps are part of your responsibilities
  • Drive code quality: tests, CI, and monitoring are integral to your workflow
  • Work in AI-assisted processes built by developers for developers.

Requirements

What you’ll need
  • 3+ years of experience with Ruby on Rails
  • Initial experience with Node.js / TypeScript / JavaScript
  • Strong interest in and experience with LLMs/AI
  • Proficient in OOP and MVC frameworks
  • Critical thinker: you test new approaches, question hype, and favor sustainable, high-quality solutions
  • Communication: fluent in German & English.

Benefits

Comp & perks
  • Ruby, Rails, Node.js, TypeScript, Kubernetes, Grafana, PostgreSQL — no quick'n'dirty solutions, but clean code with tests
  • DevSecOps is a central part of our work, not a buzzword
  • Your development time is sacred: processes optimized by developers for developers, including room for personal growth and continuous learning
  • We use modern container architectures and flexible cloud solutions (AWS, GCP, ...)
  • Projects with real impact: sports, health, green tech, telco

ATS Keywords

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Hard Skills & Tools
Ruby on RailsNode.jsTypeScriptJavaScriptOOPMVC frameworksAILLMsDevOpsCI
Soft Skills
critical thinkingcommunication