APIs and business logic
Defining contracts between components, implementing backend features and developing existing applications.
Przemysław Książek · PrinceSoft
Backend systems in Java and Kotlin
I help teams build and develop backend systems, from API contracts and architecture to implementation and maintenance. My experience spans fintech, e-commerce and media, including microservices architectures and cloud environments.
Kraków & remote · B2B collaboration
When to get in touch
Do you need support with a new component, an existing system or an integration between services? We can agree on a scope covering implementation alone or including requirements analysis and architectural decisions.
How I can support you
Integrations and microservices
Connecting services, exchanging data between systems and working with Kafka and RabbitMQ messaging.
Cloud and maintenance
Developing cloud applications, automating deployments and investigating issues using monitoring tools.
Related experience
Card systems
- Context
- Systems for issuing payment cards, managing the card lifecycle and maintaining customer data.
- My contribution
- System maintenance, improvements to application processing and report generation. Participation in round-the-clock technical support on a shift basis.
Subscription management
- Context
- Systems covering subscription creation, invoicing, recurring payments and cancellation.
- My contribution
- Designing systems and integrations with Zuora and Salesforce. Building a cloud-based microservices architecture and automating deployments.
Technologies and tools
Where our conversation starts
A description of your system, its technology stack and the main problem you need to solve is a useful starting point. We can discuss existing dependencies, responsibilities and how I would work with your team.
Contact
Let’s discuss your project
Tell me about your system, its current stage and the support you need. This gives us a useful starting point for discussing the scope of our collaboration.
contact@princesoft.plI usually respond within 24 hours.