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/
9 OpenPGP: pub 1024D/26A802B2 2004-01-17
10 sub 2048g/A74DF86D 2004-01-17 [expires: 2007-01-16]
13 Contractor - software engineer. Technical achievements highlights:
15 * Captive NTFS - The first free read/write NTFS for free OS.
16 Project included MS-Windows NT kernel reverse engineering.
18 * MMS2 - MMS Center / billing - Independent startup business attempt.
24 2005/04-11: VA Linux Systems Japan
25 Linux kernel based development
27 2004/01-11: Sun Microsystems
28 Java Enterprise System Quality Assurance (JES QA), technical lead
29 JES components compatibility analysis, automation of QA tasks, JES testing,
30 QA frameworks pilot deployments, architecture and lead of the team projects,
31 team programming guidelines
34 Freelance Commercial Projects
35 -----------------------------
37 2005: MMS2: Alternative center for cheaper mobile phones multimedia messages (MMS)
38 Web interface was outsourced.
39 Commercial service management held together by company JK-Invent.
40 * Designed to coexist with existing GSM networks service servers
41 * MMSE/WAP-Push/web/mail convergency featuring smart transformations
42 * Credits charging by ISDN IVR + automatic bank transaction acceptance
43 * Completed mobile phones firmware bugs analysis and workarounds
44 * Free gatewaying program to avoid targetted GSM operators firewalling
46 2004: HotelGate: Internet Public Access Gateway
47 Plug&Play TCP/IP for clients, selectively ticketed and/or free access,
48 simplified interface for reception desks, easy and unified management.
49 European facility installations provided by JK Labs.
51 2002-2003: Captive: The first free NTFS read/write filesystem for GNU/Linux
53 Analysis of portions of 80MB+ i386 disassembly dumps of MS-Windows XP kernel
54 and ntfs.sys for the first binary compatible reimplementation of the
55 undocumented XP kernel subsystems.
56 Written TraceFS: Microsoft Windows Kernel API Tracer: MS-Windows Kernel API
57 Tracer as native W32 kernel hooking driver for run-time analysis of the NT
58 Cache Manager XP kernel subsystem.
59 UNIX userland of Captive provides GnomeVFS interface to the MS-Windows kernel
60 based MS-Windows filesystem isolated by the CORBA/ORBit interface.
66 2001-2002: Advanced Telecom Services
68 * MMS framework client via EuroTel GSM operator
69 by technologies GSM MMS, Perl, XML, SOAP
70 Project included pilot MMS Center debugging with Ethereal,
72 * Multimedia EMS support implemented by GSM::SMS patch
73 * Implementation of protocol BIP (based on Nokia CIMD2 protocol) for GSM SMS
74 Center direct communication by extending gnokii for EuroTel GSM operator
77 Partition Surprise: GPLed Partition Magic clone
78 Project was completed as a team work. The code is based on Gnome
79 technologies. As one of the subtasks to keep system bootability I implemented
80 Int13Sniff to ease Microsoft boot loaders disassembly across partition
84 Mobile technologies for embedded devices
85 * Completed debugging of gnokii GSM software modem for Nokia 5190
86 * Port of gnokii and my mdsms (Mobile Device SMS Tool) to embedded uClinux
89 System administration of GNU/Linux and FreeBSD,
90 techsupport: GuestNET, Eclipse, GlobaLoop, Fresco
91 Ad hoc technical support challenges such as i386 IRQ redirector, Middleman
92 port (HTTP proxy ported to FreeBSD) or ssht (Unattended intranet host
93 accessibility by SSH tunnel).
96 tac_plus auth: Cisco TACACS+ NAS host based authorization
99 Technical translations from English
102 Mobile technologies, embedded devices
103 * 332: AmigaOS kernel port to embedded Motorola 68332
104 * Siemens M1 GSM modem daemon for GPS, client/server setup,
109 * MobilDock SMS Tool: SMS communication software for Digital UNIX
111 1998: European Law Students' Association
112 STEP: Custom web database application incl. fixes of PHP and PostgreSQL
114 1993-1996: Profes J&K
115 PC assembly and customer service
118 StampMan: Database application (MS-DOS: Pascal, plainTeX)
121 For referees e-mails please see: http://www.jankratochvil.net/resume/
127 1997: Bronze medal in the International Olympiad in Informatics, Cape Town
128 1997: 2nd in an MO-P national contest - mathematics Olympiad, the programming
129 1997: 1st in the International Competition in Programming
130 1996: 4th in the International Competition in Programming
131 1995: 7th in the Central European Olympiad in Informatics
138 mobile technologies, filesystems, embedded devices
140 GNU/Linux/i386/UNIX/FreeBSD, W32 kernel, Amiga/680x0, MS-DOS, ZX Spectrum,
143 C (Gnome/GCC), Perl, bash/awk/sed..., Java, C++, Pascal, Basic, REXX, S-Lang,
146 autoconf, automake, libtool, m4, CVS, gettext, bison, flex, ld script,
149 i386/x86_64, Motorola 680x0, Zilog Z80, Intel 8051, MIPS R2/3000,
152 HTML/XHTML, CSS, PHP, SQL (PostgreSQL, MySQL), JavaScript, CGI
154 plainTeX, LaTeX, DocBook, DocBook Lite, XML/NS/Schema, gtk-doc, nroff, pod
156 Gnome/GTK+/GLib, POSIX/BSD/SysV/threads/sockets, X11, OpenGL, NCurses,
157 S-Lang, GnomeVFS, libxml, SVGALib, NIS, Qt,...
159 CORBA/ORBit, SOAP, WSDL, Sun RPC
161 GSM SMS/PDU/Nokia Smart Messaging/EMS/WAP/WTP/WSP/MMSE/SMIL/WML/AMR/ETSI
162 stds/3GPP stds, IPv4, HTTP, SMTP/RFC822/MIME, FTP, SSH, DHCP, POP3,
163 NFS v2/v3, PPP/LCP/IPCP,...
165 ext2, FAT, AmigaFFS, ISO-9660