Designed and built the backend for a payment service, leading the client through the process from user authentication, to transaction verification. Solution was built with spring, postgre and selenium.

Participating in design and development of back-office solution using Spring and Angular, used by the support agents in the world biggest poker site

Participated in design and implementation of an Angular 4 front-end application , consuming REST services from the back-end of an world leading insurance platform.

Participated in redesign and implementation of microservices support for Business Processes system, managing and supervising all the activities of a private flights company, including flight preparation, cash expenses, ground handling.

Participating in a back-end migration of numerous applications used in a global banking and financial services company. Including analyse of current systems status and functionality, preparing migration plan and developing application for transformation vast quantity of DB data.

Participated in support and evolve Business support systems (BSS) for world's leading provider of TelCo business solutions. Also took part in design and development from scratch a Cloud Billing System for analysing and calculating customer's expenses rates and taxes.

Developing custom supplier and buyer solutions for the Number 1 in Europe e-invoice processing platform enabling tax compliant dematerialization of the invoicesThe process involves legal data control, legal archiving, business data rectification, validation of incoming and outgoing invoices

Participate in developing and testing of PwC VatOptimizer project, including full agile development approach with Extreme Programming and pair programming.The project involved connections to 3rd party SAP systems, automated VAT filing at the dutch tax authorities, VAT analysis and other functionality.