Hybrid Senior Backend Developer

at Kinnovis

• Job title: Senior Backend Developer
• Job type: Full Time
• Experience level: Senior
• Salary: €75,000 per year
• Degree requirement: Bachelor's Degree
• Tech skills: Azure, Cloud, JavaScript, Laravel, PHP, Terraform, Vue.js
• Location requirements: Hybrid, Brunn am Gebirge, Austria

About the role

• Senior Backend Developer at Kinnovis evolving a Laravel-based SaaS platform for the self-storage industry. Collaborating with teams to deliver quality code and drive AI initiatives.

Responsibilities

• Backend Development
• Design, implement and maintain backend services and RESTful APIs in Laravel (PHP)
• Ship production-ready code, write tests and perform thorough code reviews
• Think from the user's perspective before writing any code
• Implement and maintain integrations with payment gateways, access control systems, CRM platforms and other third-party APIs
• Optimise performance through profiling, query tuning and caching strategies
• Use AI-assisted coding tools where appropriate to boost efficiency and maintain quality
• Improve robustness by enhancing error handling, resilience and reliability
• Contribute to shared libraries within the mono-repo and keep dependencies healthy
• Collaborate with frontend engineers ( Vue.js ) to refine API contracts and data models
• Architecture & System Design
• Contribute to the evolution of our Laravel architecture within a mono-repo setup
• Help define modular boundaries, integration patterns and shared model ownership
• Improve API design, versioning, documentation and decoupling practices
• Provide architectural input via RFCs, ADRs, design reviews and technical guidelines
• Collaboration & Ways of Working
• Align with the frontend team on types, interfaces and data structures
• Encourage the adoption of AI in the development workflow
• Collaborate with fellow developers through pairing, reviews and knowledge-sharing sessions
• DevOps & Infrastructure (Azure)
• Help guide and improve Azure cloud infrastructure and deployment strategy
• Promote consistent infrastructure-as-code practices (Terraform)
• Support observability improvements across logging, monitoring and alerting

Requirements

• 7+ years in backend engineering roles, including recent senior-level ownership
• Strong expertise in Laravel (PHP) and RESTful API design
• Ability to apply user-centric thinking when planning, implementing, reviewing and testing features
• Practical experience in a SaaS environment with shared codebases or mono-repos
• Extensive experience in designing and maintaining scalable code architectures , leveraging established principles such as Event-Driven Architecture, SOA, DDD, Layered Architecture and Ports and Adapters
• Proficient in applying Clean Code principles, with a strong focus on DRY, SOLID and SRP
• Proven experience integrating with external APIs and third-party systems (e.g. payments, access control, CRM)
• Familiarity with CI/CD , automated testing and DevOps tooling, ideally on Azure
• Strong collaboration skills — experienced in working effectively within cross-functional teams
• Excellent communication , facilitation, and documentation skills in German and English.

Benefits

• Flexible working hours and a hybrid work model
• A modern, international team that values personal responsibility and clear communication
• A technically challenging platform in a stable, growing SaaS business
• A role with a strong mix of hands-on building and meaningful architectural contribution
• Extensive work on integrations and forward-looking AI initiatives
• Influence the future of a system that supports real-world operations