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# Softwareentwickler / Senior Developer

- **Company:** onOffice GmbH
- **Location:** Aachen, Germany (Remote available)
- **Experience:** Expert
- **Salary:** €55,000.0 - €70,500.0
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), PHP (Programming Language), Automation of Tests, Code Review, Continuous Integration, Web Development, Software Architecture, TypeScript, Phpunit, Cypress (Programming Language), Backend, Git, Vue.js, Graphql, Front End Software Development, JestJS, Code Restructuring, Software Version Control
- **Published:** August 23, 2026
- **Apply:** https://www.xing.com/jobs/aachen-softwareentwickler-senior-developer-149760823

## About the Role

* Mindestens 5-6 Jahre Berufserfahrung in der Webentwicklung, sehr gute Kenntnisse in PHP, JavaScript und modernen Frontend-Technologien
 * Studium bzw. Ausbildung im MINT-Bereich oder vergleichbare IT-Expertise
 * Erfahrung mit Versionsmanagement (Git), Testautomatisierung, CI/CD und Best Practices in Softwarearchitektur.
 * Analytisches Denken, selbstständige Arbeitsweise und hohe Eigenverantwortung.
 * Idealerweise erste Erfahrung in fachlicher oder technischer Führung bzw. Mentoring.
 * Fließende Deutschkenntnisse (C1+) und gute Englischkenntnisse.

## Description

* Eigenverantwortliche Entwicklung komplexer Backend-Features in **PHP **sowie moderner Frontend-Technologien wie TypeScript, **Vue.js **oder GraphQL.
 * Analyse, Optimierung und Refactoring von Code zur Verbesserung von Effizienz, Wartbarkeit und Skalierbarkeit.
 * Implementierung und Weiterentwicklung automatisierter Tests (PHPUnit, Vitest, Cypress) sowie aktive Mitgestaltung der CI/CD-Pipeline.
 * Übernahme technischer Verantwortung in Projekten, inklusive Architekturentscheidungen, Code Reviews und fachlichem Mentoring.
 * Enge Zusammenarbeit im Team, aktive Mitgestaltung von Retrospektiven, Planungsterminen und technischen Lösungsstrategien.
 * Umsetzung nachhaltiger und praxisnaher Lösungen für komplexe technische Herausforderungen.


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