Web Developer, Backend & Infrastructure

appsoluts GmbH

. Develop APIs and monoliths with web interfaces, primarily using Ruby on Rails .

Posted 10/10/2026full-timeDüsseldorf • GermanyMid-LevelSenior💰 €50,000 - €75,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in developing APIs and web applications using Ruby on Rails, React, and Tailwind, while ensuring SEO, performance, and accessibility. Proficient in cloud infrastructure management with Kubernetes and Docker, and capable of implementing DevSecOps practices.

Highest-signal resume keywords

Ruby On RailsKubernetesDockerReactDevSecOps

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

API DevelopmentJavaScriptTypeScriptSEOPerformance OptimizationAccessibilityCMS ImplementationN8n AutomationCloudflareAstro

Soft Skills

Proactive OwnershipAdaptability

Tools & Technologies

AsanaGrafanaGoogle APIsPayload

Industry Keywords

Web DevelopmentCloud InfrastructureAutomationAI Tools

Tech Stack

Tools & technologies

CloudDockerGrafanaJavaScriptKubernetesNode.jsPHPReactRubyRuby on RailsTypeScript

About the role

Key responsibilities & impact

Develop APIs and monoliths with web interfaces, primarily using Ruby on Rails
Build and operate infrastructure with Kubernetes, Docker, and Cloudflare
Develop fast, engaging web experiences with React, Astro, and Tailwind
Consider SEO, performance, and accessibility from the outset
Implement CMS solutions with Payload or custom-built systems
Develop and maintain n8n automations
Integrate APIs for internal tools such as Asana, Grafana, and Google APIs
Write clean code and meaningful tests
Implement DevSecOps as a core component
Work with evolving stacks and projects across different industries

Requirements

What you’ll need

Experience with Ruby on Rails
Node.js and/or PHP experience is a plus
Familiarity with Kubernetes, Docker, Cloudflare, or comparable cloud and container tools
Solid JavaScript/TypeScript skills
Experience with React, Astro, and Tailwind
Knowledge of SEO, performance, and accessibility
CMS experience, particularly with Payload or custom-built systems, is a secondary consideration
Willingness to take ownership and think proactively
Ability to work with evolving technology stacks and projects
Targeted use of AI tools, particularly Claude
Interest in AI coding, agents, and automation
Submit a CV including a Git repository

Benefits

Comp & perks

Permanent employment contract
Remote-first: work wherever you want within the EU
Fair compensation
Zero gender pay gap
30+ days of vacation
Birthday holiday
Urban Sports membership
JobRad bike leasing
Buy Local benefits
Retreats
Team breakfasts
Great team atmosphere
Freedom and support for professional development
Modern container architecture and cloud infrastructure (AWS, GCP, ...)
Projects with real impact: sports, healthcare, green tech, and telecommunications