SaaS subscriptions optimizer

- multi tenancy for all microservices - multitenant authorization microservice that allowed to CRUD users/roles, receive JWT tokens and supported OAuth2 - multitenant account microservice that allowed to CRUD accounts connected to particular users from authorization microservice - Fully implemented organization microservice that allowed to create tenants/organizations

under NDA

Multitenant application that allowed organizations to reduce costs spent on subscriptions to business applications. The application analyzed amount of time spent on particular business application for every employee of organization and based on this information gave advice's as how to change subscription model so that costs are reduced.

Technologies Stack:

Product:

CRM system

Public Transportation Application

- Developed functionality that allowed using barcodes based on uic918 standard for travelers - Developed functionality that allowed to monitor different events to see statistic related to usage of the app - Migrated DAL from using MongoJack to the latest MongoDB driver

Under NDA

A ticketing app for public transportation based on the principle of CIACO (Check In - Assisted Check Out). The customers checked in with one click before starting their journey. After ending the journey the customer checked out with another click on the app. The app detected the geographical route and charged the correct amount. Because of the price optimization of the app, the customer always payed the most favorable price.

Technologies Stack:

Industry:

Travel & Tourism

Product:

Shipping platform that reduces transportation costs.

Translations Aggregations Tool

- Developed a backend that allowed to synchronize translations between a translation tool and existing projects - Developed Jenkins CI scripts that on a scheduled basis allowed to synchronize translations between projects and the translation tool

Under NDA

An application that aggregated translations for a bunch of existing projects and allowed customer to invoke linguists for changing/adding translations connected to the projects in a convenient way.

Technologies Stack:

Tax Declaration Sender

- Developed an architecture of the application - Integrated the application with Ministry of Finance web services - Integrated the application with a couple of Smart Card devices - Developed CI workflow process and all necessary scripts for creating installation packages with the application for 32 and 64 bits versions of Windows OS

Under NDA

System that sends financial documents to Poland's Ministry of Finance

Technologies Stack:

Industry:

Banking & Finance

Product:

Financial data management system

Trading Platform

- Designed and implemented application that streamed options data to clients - Designed and implemented application that allowed to get historical options data for a certain period of time - Designed and implemented applications that allowed clients to place bets - Designed and implemented application that calculated trades

Under NDA

Binary options trading platform

Technologies Stack:

Product:

Trading System

Audio Recording Service

- Implemented a mechanism that brings automatic, isolation and consistency for performing concurrent metadata updates in the MatrixStore - Implemented serialization/deserialization mechanism for representing business entities as sets of key/value metadata attributes in the MatrixStore

Under NDA

Solution that allowed banks to record and store audio recordings of conversations between companies and their clients.

Technologies Stack:

Industry:

Audio & Music

Product:

maintenance of banking technics

Social Aggregator

- Integrated the application with DataSift API - Implemented websocket API that allowed consuming sport events data taken from DataSift API

Under NDA

An application was required to control the interaction with the social data streaming API to control and filter the social data feeds and its relationship to upcoming sport data feeds.

Technologies Stack:

Industry:

Data Science & Machine Learning

Widget Management System

- Implemented a user interface where bookmaker company employees could create/update/manage widgets - Implemented functionality that allowed to customize an application view by defining a CSS style - Implemented a service for uploading and sharing images that was used by widgets

Under NDA

The goal of the project was to provide a bookmaker company with a system that would deliver the betting data to other bookmakers via widgets that were embedded on the bookmaker’s website. The system included such functionality as widget code validation, statistics of widget usage, token based widget access, logging all actions performed by users to a database.

Technologies Stack:

Product:

CRM system

Dynamic Checkout Module for Hybris

- Implemented a service that allowed using WireCard as a payment provider - Implemented Dynamic Checkout Framework that was used as an internal framework

Under NDA

The main goal of the project was to develop Hybris module that allows create fully dynamic checkout flow integrated with external payment providers systems. The product was developed to be sold to customers who use Hyrbis as platform for their e-Commerce solutions.

Technologies Stack:

Procurement Solutions

Supporting of the project - fixing issues, adding enhancements

Under NDA

The project was aimed at providing services procurement solutions through its vendor management system is a SaaS platform. Solution included mobile applications for different mobile platforms such as Blackberry, iOS and Android. Our customer was a product company with its own developer team located in USA. Our local team was responsible for supporting of the project – fixing issues and some enhancements of existing functionality.

Technologies Stack:

Reporting System

Fully implemented both frontend and backend part of the application

Under NDA

The goal of the project was to create a system where user could create dynamic reports with graphs/diagrams and reports based on particular template and export reports to different formats such as PDF or DOC.

Technologies Stack:

Online Game of Chance Online

I was performing / responsible for the following tasks: - Development of backend Java server application; - Investigating and fixing issues;

Under NDA

The project was aimed at creating application for playing games of chances such as cards, backgammon and other in online with ability to play for money. The application consisted of two parts – backend Java server application and desktop application based on Adobe Flex.

Technologies Stack:

Product:

desktop casual games