The BrianQC project started in 2013, and since then we developed a shared library (and a standalone software utilizing the library) capable of one- and two-electron integral calculations (Coulomb and exchange up to h-type orbitals) and Hartree-Fock level wavefunction optimizations (SCF and DFT methods) on heterogeneous GPU-CPU clusters. Our solution has a break-even against the second largest market participant and starting a cooperation to incorporate our integrator module into their software to replace theirs.



Core Team



József Illés

Business and economics professional. He graduated at Szent István University, Faculty of Economics and Social Sciences in Gyöngyös in 2002 with special degree (summa cum laude). He was the second in the National Student Research Competition: “The Internet and its Business Possibilities.” During his studies he was a PR Manager at VisiOn-Line for 2 years. From 2004 until 2009 he worked for Diageo (the world's largest spirits company) as a Senior Accountant and Financial Technical Specialist. Currently he is the responsible person for PPCU innovations, the leader of PPCU Technology Transfer Office.




Economics, 2002

Activities and Affiliations

  • Partner at StreamNovation Ltd.
  • Leader of PPCU Technology Transfer Office


CTO, Project leader

György Cserey, Ph.D.

Vice-dean at the Pázmány Péter Catholic University (PPCU), Faculty of Information Technology and Bionics. He received the M.Sc. degree in electrical engineering from the University of Technology and Economics, Budapest. From April 2003 to June 2004 he spent one year at Notre Dame University (Indiana, USA) as Ph.D. student working on a Cellular Nonlinear Network (CNN) project related to image processing for robotic and immune response inspired applications. He received the Ph.D. degree in Infobionics from PPCU, Budapest in 2006. His research interest is mainly focused on computational aspects of multi core processing arrays (GPU, CNN) and applications of artificial immune systems. His GPU related work started with a development of a GPU boosted CNN simulator library for graphical flow-based programmability. He designed a GPU powered artificial immune system for visual applications. Under his guidance, students are working on developing 2D and 3D level-set algorithms on GPU and also a project related to GPU based cloud computing platform. He is a member of IEEE.




Electrical engineer

Infobionics, 2006

Activities & Affiliations

• Vice-dean at PPKE
• Partner at StreamNovation Ltd.




Lead Developer

Ádám Rák, Ph.D.

He recieved his MSc degree in computer engineering with honors in 2009 from the Pázmány Péter Catholic University, Faculty of Information Technology and Bionics. He received his PhD degree in 2014. The title of his dissertation was Stream-based RACER array processor and algorithm implementation methods and their applications in parallel, heterogeneous computing architectures. He won three prizes at national scientific student conferences. He automated the optimization and design of non-linear, chaotic, analog circuits. Based on his academic work he won the Hungarian Government Scholarship twice. His research interest is mainly focused on GPU optimization, quantum chemistry simulation algorithms, machine learning and computer-aided design. He submitted several patents connected to these research areas.




Computer science, 2009

PhD Informatics, 2014

Activities & Affiliations

• Partner at StreamNovation Ltd.



Lead Scientist, Product owner

István Ladjánszki

He is working for StreamNovation Ltd. in the field of high speed GPU implementation of quantum chemistry related calculations. He received his degree in theoretical physics from the Budapest University of Technology and Economics (BUTE) in 2011. His thesis on Reduced scaling Hartree-Fock calculations using tensor decomposition and neural network was awarded first prize on the National Scientific Students’ Associations Conference. From 2010 to 2013 he worked at BUTE as an associate researcher on the MRCC quantum chemistry program package. He has experience in the implementation of quantum chemistry related integral and Hartree-Fock level approximation codes and machine learning methods.






Theoretical physics, 2011

Activities & Affiliations

• Lead Scientist at StreamNovation Ltd.




Gergely Kis

He recieved his MSc degree in computer engineering with honors in 2012 from the Budapest University of Technology and Economics. Earlier he received second prize at the International Mathematical Olympiad (IMO), and the second prize at the International University Mathematics Competition (IMC), and he recieved first prize five times in the mathematics competition of the university. His university research was related to nonlinear system identification and GPGPU-based visualization of 3D medical data. He had worked on holographic microscope images processing at MTA SZTAKI for two years. He took part in the development of a camera tracking and 3D spatial reconstruction software at StreamNovation Ltd., and since 2013, he has been participating in the development of a GPGPU-based quantum chemical simulation software.




Computer Science, 2012

Activites and Affiliations

  • Software Architect at StreamNovation Ltd.


  • Baranyák, Miklós

  • Cserháti, Sebestyén

  • Feldhoffer, Gergely PhD.

  • Gergely, Krisztián

  • Gugyin, Adrián

  • Kozma, Attila PhD.

  • Nemes, Csaba PhD.

  • Oroszi, Balázs

  • Pólik, Marcell

  • Soós, Gergely PhD.

  • Tátrai, Antal PhD.

  • Tornai, Gábor János PhD.

  • Virág, Tamás Lajos