PapChap

Projects

A few of the tasks we have solved for our clients.

Kyivstar (via Softengi)

Single sign-on for Kyivstar

Central authentication service for the operator's subscribers and partners across all its web services.

Results

  • One login for all web services of the operator
  • Authentication and authorization under high load
  • Multilingual, for clients and partners
  • Kubernetes clusters and CI/CD on Jenkins
  • Java
  • Spring Boot
  • Spring Security
  • Kubernetes
  • Jenkins

Wyzio, Switzerland

Accounting automation platform

Cloud software for accountants, managers and companies that automates most routine operations.

Results

  • Repetitive accounting tasks automated
  • Used by companies in many countries
  • Java
  • Spring Boot
  • PostgreSQL
  • Docker

Cardicell, Israel

Remote cardiac patient monitoring

Mobile apps and server services that let doctors follow cardiac patients remotely.

Results

  • Patient data delivered from the phone to the clinic
  • Android
  • OpenGL ES
  • Java
  • Firebase

SMS aggregator, Ukraine

SMS delivery platform

Platform for sending and receiving SMS that connects mobile operators and content providers over every common protocol.

Results

  • Carried over 60% of the market's transactions in 2009–2010
  • Java
  • SMPP

Trading, under NDA

Low-latency Java for US stock markets

High-performance Java applications that allocate all memory at startup and never trigger garbage collection.

Results

  • No GC pauses on the trading path
  • Pipeline architecture with pre-allocated objects
  • Java
  • Multithreading

Ukrainian technology company, under NDA

Control systems for compact robotic platforms

Electronics and software for small autonomous devices that have to work reliably in demanding field conditions.

Results

  • Firmware and control software for microcontroller-based devices
  • Data transmission protocols that work under data loss and active countermeasures
  • C / C++
  • Embedded
  • Linux

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