Przemysław Książek · PrinceSoft

Payment systems and fintech integrations

I support software development for payments, transaction authentication and subscription management. My experience includes card systems, online banking, 3DS components and integrations with Zuora and Salesforce.

Kraków & remote · B2B collaboration

When to get in touch

This collaboration can help with developing an existing financial system, implementing a payment component or integrating subscription workflows with other services. The scope depends on your architecture and project requirements.

How I can support you

3DS authentication

Developing components for card transaction authentication. Experience with ACS, 3DS SDK and component certification processes.

Card systems and banking

Developing and maintaining features for card lifecycle management, customer data and payment integrations, including BLIK.

Subscriptions and invoicing

Systems covering subscription creation and cancellation, invoicing and recurring payments. Integrations with Zuora and Salesforce.

Related experience

Online and mobile banking

Context
An online banking portal with a mobile application and backend systems.
My contribution
Application maintenance, card lifecycle management, BLIK implementation and 3DS authentication.

3DS payment systems

Context
Critical systems for authenticating payment card transactions.
My contribution
Development of 3DS architecture components, including ACS and 3DS SDK, and participation in their certification process.

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

We can start with your payment or subscription flow, existing integrations and team requirements. Together, we can identify which components need to change and how responsibilities are divided between systems.

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.pl

I usually respond within 24 hours.