2 English: technical: fluent, general: communicable
5 eMail: job@jankratochvil.net
6 Projects: http://www.jankratochvil.net/project/
7 Resume: http://www.jankratochvil.net/resume/
15 GNU Compiler Tools development: primarily GDB
17 2005/04-11: VA Linux Systems Japan
18 Linux kernel based development
20 2004/01-11: Sun Microsystems
21 Java Enterprise System Quality Assurance (JES QA), technical lead
22 JES components compatibility analysis, automation of QA tasks, JES testing,
23 QA frameworks pilot deployments, architecture and lead of the team projects,
24 team programming guidelines
27 Freelance Commercial Projects
28 -----------------------------
30 2005-2006: MMS2: Alternative center for mobile phones multimedia messages (MMS)
31 Web interface was outsourced.
32 Commercial service management held together by company JK-Invent.
33 * Designed to coexist with existing GSM networks service servers
34 * MMSE/WAP-Push/web/mail convergency featuring smart transformations
35 * Credits charging by ISDN IVR + automatic bank transaction acceptance
36 * Completed mobile phones firmware bugs analysis and workarounds
37 * Free gatewaying program to avoid targetted GSM operators firewalling
39 2004: HotelGate: Internet Public Access Gateway
40 Plug&Play TCP/IP for clients, selectively ticketed and/or free access,
41 simplified interface for reception desks, easy and unified management.
42 European facility installations provided by JK Labs.
44 2002-2003: Captive: The first free NTFS read/write filesystem for GNU/Linux
46 Analysis of portions of 80MB+ i386 disassembly dumps of MS-Windows XP kernel
47 and ntfs.sys for the first binary compatible reimplementation of the
48 undocumented XP kernel subsystems.
49 Written TraceFS: Microsoft Windows Kernel API Tracer: MS-Windows Kernel API
50 Tracer as native W32 kernel hooking driver for run-time analysis of the NT
51 Cache Manager XP kernel subsystem.
52 UNIX userland of Captive provides GnomeVFS interface to the MS-Windows kernel
53 based MS-Windows filesystem isolated by the CORBA/ORBit interface.
59 2001-2002: Advanced Telecom Services
61 * MMS framework client via EuroTel GSM operator
62 by technologies GSM MMS, Perl, XML, SOAP
63 Project included pilot MMS Center debugging with Ethereal,
65 * Multimedia EMS support implemented by GSM::SMS patch
66 * Implementation of protocol BIP (based on Nokia CIMD2 protocol) for GSM SMS
67 Center direct communication by extending gnokii for EuroTel GSM operator
70 Partition Surprise: GPLed Partition Magic clone
71 Project was completed as a team work. The code is based on Gnome
72 technologies. As one of the subtasks to keep system bootability I implemented
73 Int13Sniff to ease Microsoft boot loaders disassembly across partition
77 Mobile technologies for embedded devices
78 * Completed debugging of gnokii GSM software modem for Nokia 5190
79 * Port of gnokii and my mdsms (Mobile Device SMS Tool) to embedded uClinux
82 System administration of GNU/Linux and FreeBSD,
83 techsupport: GuestNET, Eclipse, GlobaLoop, Fresco
84 Ad hoc technical support challenges such as i386 IRQ redirector, Middleman
85 port (HTTP proxy ported to FreeBSD) or ssht (Unattended intranet host
86 accessibility by SSH tunnel).
89 tac_plus auth: Cisco TACACS+ NAS host based authorization
92 Technical translations from English
95 Mobile technologies, embedded devices
96 * 332: AmigaOS kernel port to embedded Motorola 68332
97 * Siemens M1 GSM modem daemon for GPS, client/server setup,
102 * MobilDock SMS Tool: SMS communication software for Digital UNIX
104 1998: European Law Students' Association
105 STEP: Custom web database application incl. fixes of PHP and PostgreSQL
107 1993-1996: Profes J&K
108 PC assembly and customer service
111 StampMan: Database application (MS-DOS: Pascal, plainTeX)
117 1997: Bronze medal in the International Olympiad in Informatics, Cape Town
118 1997: 2nd in an MO-P national contest - mathematics Olympiad, the programming
119 1997: 1st in the International Competition in Programming
120 1996: 4th in the International Competition in Programming
121 1995: 7th in the Central European Olympiad in Informatics
128 mobile technologies, filesystems, embedded devices
130 GNU/Linux/i386/UNIX/FreeBSD, W32 kernel, Amiga/680x0, MS-DOS, ZX Spectrum,
133 C (Gnome/GCC), Perl, bash/awk/sed..., Java, C++, Pascal, Basic, REXX, S-Lang,
136 autoconf, automake, libtool, m4, CVS, gettext, bison, flex, ld script,
139 i386/x86_64, Motorola 680x0, Zilog Z80, Intel 8051, MIPS R2/3000,
142 HTML/XHTML, CSS, PHP, SQL (PostgreSQL, MySQL), JavaScript, CGI
144 plainTeX, LaTeX, DocBook, DocBook Lite, XML/NS/Schema, gtk-doc, nroff, pod
146 Gnome/GTK+/GLib, POSIX/BSD/SysV/threads/sockets, X11, OpenGL, NCurses,
147 S-Lang, GnomeVFS, libxml, libneon, SVGALib, NIS, Qt,...
149 CORBA/ORBit, SOAP, WSDL, Sun RPC
151 GSM SMS/PDU/Nokia Smart Messaging/EMS/WAP/WTP/WSP/MMSE/SMIL/WML/AMR/ETSI
152 stds/3GPP stds, IPv4, HTTP, SMTP/RFC822/MIME, FTP, SSH, DHCP, POP3, IMAP4,
153 NFS v2/v3, PPP/LCP/IPCP,...
155 ext2, FAT, AmigaFFS, ISO-9660