Grygoriy Yaklyushyn Homepage
Здесь обычно отлаживаю какой-нибудь код и провожу эксперименты.
Вкладка "Видео" — школьный проект моей дочки (пятнадцатиминутный фильм «ZAKÁZANÉ ZBRANE»), чуть позже прикручу галерею, и перенесу видео туда.
Ссылки на всякие соцсети, где я засветился, или ресурсы, которые мне понравились:
Grygoriy Yaklyushyn
SUMMARY
Highly skilled and self-motivated software engineer with 20+ years of experience.
Extensive background in creating high-load web-based systems and applications with full cross-browser compatibility.
Proficient in a wide range of development tools and languages ranging from low-level server-side programming languages such as С/Assembler to high-level client-side languages and libraries such as JavaScript, AJAX, JQuery etc.
Familiar with design and enhancement of e-commerce software.
4+ years of experience in the billing and payment systems development and the anti-fraud security systems support.
Experience in search engine optimization including the optimization and adaptation for mobile devices and development of advanced traffic distribution systems.
Able to plan and lead full project life cycles.
15+ years experience in web development.
7+ years experience in development and maintenance of my own small business projects in software industry: for 5 years (2004-2009) in Ukraine and for 4 years (2007-present time) in Czech Republic.
AREAS OF EXPERTISE
- Programming languages:
- JavaScript – 13 years;
- PHP – 12 years;
- C/C++ – 5 years;
- Perl – 3 years;
- Application and Web Servers:
- Apache – 11 years;
- Nginx – 3 years;
- RDBMS Design and Development:
- MySQL – 9 years;
- PostgreSQL – 3 years;
- Clarion – 3 years;
- dBase/FoxPro – 2 years;
- Web development technologies and frameworks:
- HTML, CSS, DOM, Javascript – 13 years;
- XHTML, XML, XSLT, RSS, Atom – 8 years;
- HTML5/CSS3, iPhone/iPad markup – 2 years;
- AJAX – 4 years;
- Jquery/JQuery UI/Prototype – 2 years;
- Version control systems:
EMPLOYMENT SUMMARY
- EllGree s.r.o., Prague, Czech Republic (Aug, 2007 – current), CEO and owner.
- Yaklyushyn S.P.D., Odessa, Ukraine (Oct, 2005 – Dec, 2009), CEO and owner.
- Ferney Enterprises Limited, Old Hartley, UK (Sep 2003 – May, 2005), Senior web developer.
- CardsGate LLC, New Jersey, USA (Apr 2002 – Jul 2003), Programmer / web developer.
- ODREX Ltd., Odessa, Ukraine (May 2002 — Aug 2002), Web developer.
- Anything3D, Inc., San Francisco, USA (Jan 2000 – Feb 2002), Senior web developer / team leader.
- Triton Music Store, Odessa, Ukraine (Dec 1998 – Oct 1999), Programmer, graphic arts designer.
- N-Bis P.C.F., Odessa, Ukraine (Nov 1995 – Nov 1998), Web developer.
- Interagent Shipping Agency, Odessa, Ukraine (Sep 1993 – Dec 1997), Software and hardware chief Dept.
- Channel 7 TV company, Odessa, Ukraine (Jul 1992 – Sep 1993), Video / broadcast engineer.
- Regional hospital of Odessa, Ukraine (Jan 1992 – Jul 1992), Programmer.
- SKB “SIM” (Special Design Bureau of the high-precision mass measurements instrumentation), Odessa, Ukraine (Aug 1990 – Dec 1991), Software/hardware engineer.
EMPLOYMENT HISTORY
Company: EllGree s.r.o. and Company: Yaklyushyn S.P.D., Owner, director (CEO).
Projects:
- Traffic distribution system (TDS)
- Content management system (Internal CMS engine)
- Product reviews site engine
- Text frequency analysis tools
- Keywords/search queries categorization system
- SEO tools (search queries trend analysis, finding low-competition narrow niches, monitoring of domain names expiring, monitoring a progress in search engine results etc.)
- Generating a coherent text
- Development and support of software modules for parsing and gathering statistics from heterogeneous affiliate and sponsorship programs
- Development of sales analysis system with feedback to TDS
- Adaptation products review site engine to fast-growing segment of mobile devices
- Marketing researches of the Czech republic and Poland Internet market.
Accomplishments:
Designed and developed a traffic distribution system that automatically tracks merchantability of various products and services from thousands sellers; system directs a current visitor depending on given parameters (search query and its category, native language, country of residence, etc.) and vendors/goods parameters (a popularity of the goods/services within the visitor category, a cost and revenue share of the goods/services, vendor reliability etc.)
Implementation of this system for the local Czech Internet market is in progress.
Tools and technologies used:
PHP 5, C, MySQL, HTML, CSS, XML, JavaScript, Ajax, jQuery, jQueryUI
Company: Ferney Enterprises Limited, Senior web developer.
Projects:
- The employer who had private payment system had ordered the development of billing system with advanced protection against credit card fraud.
- Support and training anti-fraud systems within 24 months.
Accomplishments:
The billing system was developed within three months. Superstructure system of sensors for collecting data on various user parameters and their behavior before and after making a purchase (country, language, user and user agent reaction rate etc.) was developed afterwards. Protection against automated bulk purchasing requests was developed, including captcha, hidden links, obfuscated JavaScript code etc.
Provided weight-function mathematical model allowing to make decision whether to leave the user as a supposedly loyal customer or to refund his payment and close access.
Developed a feedback system allowing to change the weights in configuration depending on changes in fraud strategies. The system was trained to identify unreliable vendors traffic and has allowed to reduce percent of chargeback transactions more than twice within two years.
Tools and technologies used:
PHP 5, C, MySQL, HTML, CSS, JavaScript, Ajax, various networking tools.
Company: CardsGate LLC, Programmer / web developer.
Projects:
- Affiliate program http://www.cardsgate.com/ (the program is closed now)
- Billing system
- Customer support system https://www.cardsgate-cs.com/
Accomplishments:
Designed large-scale high-load system consisting of traffic accounting, on-line payments, commission payments and customer support service.
Tools and technologies used:
php 4, C, MySQL, HTML, CSS, JavaScript
Company: ODREX Ltd., Web developer.
Projects:
- Developing corporate site http://odrex.com.ua/
Accomplishments:
The corporate site was designed and created.
Tools and technologies used:
php 4, HTML, CSS, JavaScript, Macromedia Flash
Company: Anything3D, Inc., Senior web developer / team leader.
Projects:
- Corporate site http://www.anything3d.com/ development & support.
- Corporate site http://www.realtor3d.com/ development & support (the site is closed now).
- Team management on creation of a codec for the compression of consecutive pictures of rotating object.
- Team management on creation of a Java-applet for playing (rotate and zoom) the compressed 3D-object.
- Team management on research of ISP market in Ukraine.
- Creating web-based engine for 3D-object presentations (rotating/zoom/partial zoom/change color etc.)
Accomplishments:
The corporate site was designed and created. Internal php-library provided to automate & simplify content management, HTML forms validation, working with java-applets, asynchronous JavaScript interaction etc.
Tools and technologies used:
PHP 3, PHP 4, PostgreSQL, HTML, CSS, JavaScript, Asynchronous JavaScript, Java applets, Macromedia Flash, X-Server for Windows, Apache, FreeBSD.
Company: Triton Music Store, Software engineer and computer graphics designer.
Projects: Development of the life cycle of production printed materials.
Company: N-Bis P.C.F., Web developer.
Projects: CMS and a corporate site http://www.nbis.ua/ and CMS
Company: Interagent Shipping Agency, Soft-/hardware chief dept.
Projects: Head-office network installation, creation monitoring system of served ships, developing and support of company accounting system.
Company: Channel 7 TV company, Video / broadcast engineer.
Projects: System of rapid deployment of ad units on the air.
Regional hospital of Odessa, Programmer.
Projects: Processing of statistical data from the district hospitals, factor analysis and graphical representation.
SKB “SIM”, Software/hardware engineer.
Projects: Developing of a CAD system for mass measurements instrumentation design.
EDUCATION
1985-1990: National Polytechnic State University (http://www.opu.ua/en) city of Odessa, Ukraine
Radio-electronics academic department
Majoring in Radio-electronics
Diploma of Specialist: equivalent to Masters Degree.
My daughter school video project «Zakázané zbraně»
