Darko Tominac - Home Page

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Darko Tominac, mag. ing., DSM
E-mail: darko@tominac.ddns.net
Web : http://tominac.ddns.net

LinkedIn : https://hr.linkedin.com/in/darko-tominac-a48b77

Experience: 30 years

Areas of expertise

C/C++ programming for Unix/Linux (SuSe, SCO, RedHat, OSF/1, AIX, ...)
Linux kernel programming & debugging
Basic and Advanced Linux System Administration (proxy, firewall, router, DNS, DHCP, e-mail server, etc.)
Informix DatabaseSystem Administration
TCP/IP networks and protocols
Windows and Linux security
4GL and ESQL/C programming for Informix
Serial communication (RS232 and RS485) protocols driver design and implementation in C
C programming for STM32, ESP32, Intel 8051 microcontroller family
Visual C++ and MFC programming
RTOS programming: FreeRTOS, VxWorks, ...
Cryptography
Reverse engineering of x86 binaries using IDA Pro 5.0
Physical to virtual migration of Unix/Linux/Windows servers to VmWare
Protocol & Network analysis using WireShark
Java
ActiveMQ
ServiceMix
Embedded Linux
Git / Gitlab
Docker
VmWare
Glassfish
Jira
Coverity
Docker
ESP32
STM32
Lauterbach TRACE32
Segger J-Link

Special development skills

Software development, especially for embedded systems and Unix/Linux
Debugging and bug fixing of existing C/C++ software
Quality assurance of C/C++ source code

Certificates

Tools

Education

Informix bootcamp, Alfatec (2011)
DSM - Diploma Study in Management,
Faculty of Electrical Engineering and Computing, University of Zagreb (1998)
JAM 7.0 programming course, HPT (1997)
Informix Database System Administration course,
Faculty of Electrical Engineering and Computing, University of Zagreb (1997)
Mag. ing. Electrical Engineering (major in Computer Science),
Faculty of Electrical Engineering and Computing, University of Zagreb (1992)

Projects

Automotive Ethernet transceiver drivers (Marvell, Realtek) Elektrobit GmbH
Autosar drivers for Ethernet transceivers
MISRA C, AUTOSAR
Avocent Ethernet Serial Provider (ESP) kernel module driver for Linux Croatian Post Inc.
Vendor out-of-business problem and client requested porting the driver to new kernel + bug fixing
gcc, Linux device driver
Enterprise Service Bus (ESB) for Croatian Post Inc.
ServiceMix used as core engine in data transport layer and messages processing
ServiceMix, Java EE, SuSE SELS11, Informix
ActiveMQ configuration and deployment for Croatian Post Inc.
ActiveQM is configured and used as a data transport layer from each Post Office to central location.
ActiveMQ, SuSE SELS9, Informix
Bug fixing of "Metrologic USB Serial Emulation Driver - mtlgpos2.sys" for Croatian Post Inc.
Using Barcode reader Focus MK1690 at customer site caused an occasional 'Windows freeze' event. By reverse engineering and debugging of Metrologic's original driver (a Windows kernel module, mtlgpos2.sys) all the bugs in the driver have been found and fixed.
IDA Pro 5.0, MS Visual Studio, WinXP DDK
High Availability System for Croatian Post Inc.
Design and implementation High Availability System based on Linux platform to provide Disaster Recovery and Business Continuity in case of host and/or location failure. The project is in progress as of June 2007.
Linux, Heartbeat, DRBD, bash, Informix
Telegram delivery system for Croatian Post Inc.
Old system based on teleprinters has been replaced with a new system based on TCP/IP network and Linux hosts. Each Post office has one Linux host and telegrams are delivered to the specific host over TCP/IP network. The project has been completed by June 2007.
Linux, Informix, PPP protocol, ESQL/C, C, Socket programming
Server migration from SCO to Linux for Croatian Post Inc.
Migration of 800 SCO OpenServer 5.0.x based servers to HP ML350 G4 running on Linux. Designing, planning and supervising of the entire process to safely transfer existing Informix database and current versions of custom made applications from SCO to Linux. The procedure was made (in form of installation disk, scripts and written instructions) to provide complete installation from bare metal HP ML350 G4 to fully operational system with Linux and all the applications. The migration process has been completed with success in January 2007.
SCO, Linux, bash, Informix
Fault tolerant systems - Portable 'Watchdog' and 'Majority Voter Mechanism'
ANSI C
Run Time Library for emulation of transputer native functions (process handling, channel communication and timer related functions) on Pentium processor.
ANSI C
BBS system for Croatian Post company. Clients, which are big companies (such as Zagreb Water Supply Company - 'Vodoopskrba i odvodnja d.o.o.') require from their consumers to pay bills in a post office. The developed system enables such clients to acquire data on paid bills in digital form on a daily basis. Data are collected on a PC by means of modem connection.
Croatian Post company
OSF/1 UNIX, C, TCP/IP, Informix, ESQL/C
4GL programs for generation of reports in the APROPOS program
NasiceCement (a concrete factory situated at the town of Nasice)
UNIX, Informix, 4GL
Application for Client-Server data acquisition for distributed system (over 800 locations) with data encryption and compression.
Croatian Post and Telecommunication company
UNIX, C, Informix, ESQL/C, TCP/IP
IBM 4722 protocol for Tally T5025 passbook printer (banking printer)
Croatian Post and Telecommunication company
UNIX, C
A system for the distribution of e-mail within the local network, and e-mail communication with the global network (Internet).
UNIX, C, PPP, POP3 and SMTP protocols
Allen Bradley DH485 token passing network
8051 embedded system, C
Various RS232, RS485 and RS422 serial communication protocols for PLCs:
Omron, Modbus (Modicon), GE Fanuc (SNP, SNP-X), TI (Task Code), Suconet K, Siemens (S3964, AG511), Allen Bradley (DF1, DH485)
8051 embedded system, C