ProtocolHero GmbH | Germany | 50xxx, 51xxx Köln | Permanent position | Full time / Home office | Published since: 16.01.2026 on stepstone.de
Senior Software Developer Laravel (m/f/d)
ProtocolHero builds the platform that frees craft businesses from paper, chaos and Excel. Our goal is clear: documentation and test protocols are to be so easy that they are naturally created in the working day. Quick, clean, comprehensible and ready for customers, acceptance, insurance and in doubt also for the dispute. For this we develop a modern SaaS especially for craftsmanship, with strong templates, clear workflows and AI features that really save time. We are looking for a senior software developer in the backend with the specialization Laravel, which takes over the overall technical responsibility for the backend and works closely with our developer team . You set the technical direction, add code quality and delivery to the next level and build with us a product that digitally brings the craft forward. .
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Your tasks • Your profile • What we offer
Conception, development and maintenance of powerful backend services with Laravel Implementation of business logic and complex workflows, cleanly structured and well testable
Modelling and further development of databases, data structures and migration concepts
Performance, scalability and security as standard, including Query optimization, caching and robust Auth and rights models
Database Engineering with PostgreSQL, including Schema Design, Indexing, Query Tuning, Migration Strategy and Clean Data Modelling for Stable and High Performance Workflows
Close coordination with the frontend team in React and Inertia for clear contracts, stable APIs, clean DTOs and traceable error handling
Architecture and Concept Coordination together with the Techlead, including decision documentation and consistent implementation of the guide planks
Code Reviews with Focus on Junior and Mid Developers, Best Practices, Testing Culture and Sustainable Code Quality
Participation in Reliability topics such as Queues, Redis, Monitoring and CI CD, so releases remain stable and Incidents can be mastered
Multiannual experience in professional software development with clear focus on Backend, ideally in B2B SaaS Very good understanding of modern backend architectures and clean separation of domain, application layer, API and infrastructure
Very good knowledge of Laravel, including API Design, Auth and Rolling Rights, Queues and Jobs, Data Modelling and Performance Optimization
Solid database expertise with PostgreSQL, including scheme design, indexing, query tuning and safe handling of migrations
Experience with Queues and Caching as well as good understanding of asynchronous workflows and reliable job processing
Experience with observability and operation, including logs, monitoring, alerting and traceable error analysis in production
Experience with Docker and modern deployment setups as well as safe handling of CI CD pipelines
High demand for code quality, including testing strategy, reviews, static analysis and clear engineering standards
Experience in code reviews and mentoring of junior and mid developers, professional leadership without people management claim
Structured, independent working, pragmatic and solution-oriented with a view to stability, security and scaling
Language requirements: Very good knowledge of English at C1 level required. German knowledge desirable
Nice to have Frontend experience with React and Inertia to implement tickets end to end as needed and to coordinate API contracts closely with the frontend
Experience with AI features in productive operation, such as workflow orchestration, prompt and output validation, monitoring and guardrails
A product with global potential and impact in crafts
Direct cooperation with the founder and product for quick decisions
Technical design options instead of pure ticket processing, you shape architecture, standards and delivery
Flexible working models: hybrid on site in a modern office in Cologne and Homeoffice
Modern equipment: current Apple Equipment, matching tools and budget for productive work
Attractive salary package with bonus model and clear development perspective
We support further education and training A pragmatic team culture with high self-responsibility, without politics and without micromanagement
Location
![]() | ProtocolHero GmbH | |
| 50858 Köln | ||
| Germany |
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