• PHP Compiler Development of Clang/LLVM based PHP compiler. The solution included: a compiler that transforms PHP sources into executable code, runtime support for Web applications and a set of PHP extensions Runtime support layer was compatible with Zend Engine but had object-oriented design. The main target was to reduce memory consumption of customer’s web application. Compiled application consumes 8-13 time less memory than interpreter. Extended diagnostics provided by the compiler allowed discovering errors in the cloud application and frameworks used by it. Team leader, up to 8 developers. Managing project with tools: Redmine, Jenkins, Phabricator.

• Custom compiler support Maintaining custom compilers for MeeGo, Android, QNX, Windriver Linux. - Adapting driver, make system, libraries and some other components for target platform. - Investigation of performance problems. - Work with Android sources including Linux kernel. Adaptation for Intel compiler, performance tuning. • GCC support Maintaining Intel Atom processor in GCC (project duration - half a year). - Created infrastructure for building, debugging and performance testing. - Created patch that enhanced code generation of some intrinsic functions (memcpy/memset/bzero). - Worked as a team leader (1 developer, 2 interns). • Fortran Frontend Maintenance and development of Fortran frontend, middle-end and OpenMP subsystem. - Implemented Fortran 2003 features in the Intel compiler: ASSOCIATE, SELECT TYPE. - Maintained Fortran OpenMP subsystem. - Implemented initial version of offload compilation in Fortran. • Fortran for Interix Porting of driver and make system, development of installer. - Designed and implemented packaging process from scratch, without using expensive software. The process allowed Interix Fortran compiler to have L&F identical to Intel classic compiler. - Ported driver to the new platform. • Debug info support in Intel Compiler Responsible for subsystem of generating debug information for Windows platform. - Developed initial version of STI7 support in the Intel compiler,

• Development of telecommunication system (project duration – 9 months). Took part in development of telecommunication system, as a contractor in cross-continental team. The process was based on scrum technology, using Jira, FishEye. Main part of the system was created on Java. Used components were: Jetty, Tapestry, Spring, Hibernate, Openfire. • Compiler support Bug fixing and modification of existing compiler (170 KSLOC). All parts of the compiler were modified (frontend, backend, internal representation, optimizer). The compiler was written on a mixture of Oberon, Modula and C, targeted to Linux and Solaris. The target platform was x86. - Drastically improved syntax error reporting, - Implemented set of optimizations. • Restaurant Management System Design and implementation of software for complex for automation of restaurant operations. The system was multiplatform (Linux and Windows) and used Java as a main programming language. • Development and support of patcher tool Development and support of set of patcher tool (30 KSLOC) used to upgrade software of telephone stations. Platforms were x86/Linux, Solaris/Sparc. Target hardware was x86 and StrongARM. • Fax recognition software Development of a software component that converts recorded sound of fax transmission into corresponding image. • Development of VLSI circuit CAD system Development of large CAD software, used in development of processor chips. The system includes compiler for proprietary HDL, set of transformation tools and a simulation environment. The environment was targeted for simulation of very large circuits (tens of millions of simulation entities), must be as fast as possible, be easily saved and loaded to/from persistent media. - Designed system architecture, - Successful management of the large project team (up to 14 developers and testers) in long-term (16 month) and complex (more than 500 KSLOC) project, - Technical correspondence with customer, successful negotiations on complex topics - Design and development of simulation environment. - Design and development of transformation environment that converts syntax tree representation of simulated circuit into a netlist.

Faculty of Natural Sciences