2 English: technical: fluent, general: communicable
5 Licenses: motorcycle, car
6 eMail: job@jankratochvil.net
7 Projects: http://www.jankratochvil.net/project/
8 Resume: http://www.jankratochvil.net/resume/
16 GNU Build Tools development: primarily GDB
18 2005/04-11: VA Linux Systems Japan
19 Linux kernel based development
21 2004/01-11: Sun Microsystems
22 Java Enterprise System Quality Assurance (JES QA), technical lead
23 JES components compatibility analysis, automation of QA tasks, JES testing,
24 QA frameworks pilot deployments, architecture and lead of the team projects,
25 team programming guidelines
28 Freelance Commercial Projects
29 -----------------------------
31 2005-2006: MMS2: Alternative center for mobile phones multimedia messages (MMS)
32 Web interface was outsourced.
33 Commercial service management held together by company JK-Invent.
34 * Designed to coexist with existing GSM networks service servers
35 * MMSE/WAP-Push/web/mail convergency featuring smart transformations
36 * Credits charging by ISDN IVR + automatic bank transaction acceptance
37 * Completed mobile phones firmware bugs analysis and workarounds
38 * Free gatewaying program to avoid targetted GSM operators firewalling
40 2004: HotelGate: Internet Public Access Gateway
41 Plug&Play TCP/IP for clients, selectively ticketed and/or free access,
42 simplified interface for reception desks, easy and unified management.
43 European facility installations provided by JK Labs.
45 2002-2003: Captive: The first free NTFS read/write filesystem for GNU/Linux
47 Analysis of portions of 80MB+ i386 disassembly dumps of MS-Windows XP kernel
48 and ntfs.sys for the first binary compatible reimplementation of the
49 undocumented XP kernel subsystems.
50 Written TraceFS: Microsoft Windows Kernel API Tracer: MS-Windows Kernel API
51 Tracer as native W32 kernel hooking driver for run-time analysis of the NT
52 Cache Manager XP kernel subsystem.
53 UNIX userland of Captive provides GnomeVFS interface to the MS-Windows kernel
54 based MS-Windows filesystem isolated by the CORBA/ORBit interface.
60 2001-2002: Advanced Telecom Services
62 * MMS framework client via EuroTel GSM operator
63 by technologies GSM MMS, Perl, XML, SOAP
64 Project included pilot MMS Center debugging with Ethereal,
66 * Multimedia EMS support implemented by GSM::SMS patch
67 * Implementation of protocol BIP (based on Nokia CIMD2 protocol) for GSM SMS
68 Center direct communication by extending gnokii for EuroTel GSM operator
71 Partition Surprise: GPLed Partition Magic clone
72 Project was completed as a team work. The code is based on Gnome
73 technologies. As one of the subtasks to keep system bootability I implemented
74 Int13Sniff to ease Microsoft boot loaders disassembly across partition
78 Mobile technologies for embedded devices
79 * Completed debugging of gnokii GSM software modem for Nokia 5190
80 * Port of gnokii and my mdsms (Mobile Device SMS Tool) to embedded uClinux
83 System administration of GNU/Linux and FreeBSD,
84 techsupport: GuestNET, Eclipse, GlobaLoop, Fresco
85 Ad hoc technical support challenges such as i386 IRQ redirector, Middleman
86 port (HTTP proxy ported to FreeBSD) or ssht (Unattended intranet host
87 accessibility by SSH tunnel).
90 tac_plus auth: Cisco TACACS+ NAS host based authorization
93 Technical translations from English
96 Mobile technologies, embedded devices
97 * 332: AmigaOS kernel port to embedded Motorola 68332
98 * Siemens M1 GSM modem daemon for GPS, client/server setup,
103 * MobilDock SMS Tool: SMS communication software for Digital UNIX
105 1998: European Law Students' Association
106 STEP: Custom web database application incl. fixes of PHP and PostgreSQL
108 1993-1996: Profes J&K
109 PC assembly and customer service
112 StampMan: Database application (MS-DOS: Pascal, plainTeX)
118 1997: Bronze medal in the International Olympiad in Informatics, Cape Town
119 1997: 2nd in an MO-P national contest - mathematics Olympiad, the programming
120 1997: 1st in the International Competition in Programming
121 1996: 4th in the International Competition in Programming
122 1995: 7th in the Central European Olympiad in Informatics
129 mobile technologies, filesystems, embedded devices
131 GNU/Linux/i386/UNIX/FreeBSD, W32 kernel, Amiga/680x0, MS-DOS, ZX Spectrum,
134 C (Gnome/GCC), Perl, bash/awk/sed..., Java, C++, Pascal, Basic, REXX, S-Lang,
137 autoconf, automake, libtool, m4, CVS, gettext, bison, flex, ld script,
140 i386/x86_64, Motorola 680x0, Zilog Z80, Intel 8051, MIPS R2/3000,
143 HTML/XHTML, CSS, PHP, SQL (PostgreSQL, MySQL), JavaScript, CGI
145 plainTeX, LaTeX, DocBook, DocBook Lite, XML/NS/Schema, gtk-doc, nroff, pod
147 Gnome/GTK+/GLib, POSIX/BSD/SysV/threads/sockets, X11, OpenGL, NCurses,
148 S-Lang, GnomeVFS, libxml, libneon, SVGALib, NIS, Qt,...
150 CORBA/ORBit, SOAP, WSDL, Sun RPC
152 GSM SMS/PDU/Nokia Smart Messaging/EMS/WAP/WTP/WSP/MMSE/SMIL/WML/AMR/ETSI
153 stds/3GPP stds, IPv4, HTTP, SMTP/RFC822/MIME, FTP, SSH, DHCP, POP3, IMAP4,
154 NFS v2/v3, PPP/LCP/IPCP,...
156 ext2, FAT, AmigaFFS, ISO-9660