Čestmír Hýbl – Curriculum Vitae

Date of birth:	February 14, 1978
Nationality:	Slovak
Languages:	Slovak (native) English (active) Russian (passive)
Marriage status:	Married
Address:	Páričkova 13, 821 08 Bratislava, Slovak Republic
Tel:	+421-903-459 785
E-mail:	cestmir [dot] hybl [at] gmail [dot] com

2002 – present (11 years)	NUSTEP s.r.o., Bratislava Software Architect, Senior Developer lead architect of several model driven web application frameworks
2001 – 2002 (13 months)	Comenius University, Bratislava (civil military service) Application Developer COM+ component service application development
1998 – 2001 (3 years)	Omikron Eta, Bratislava Software Engineer, Application Developer Win32 client-server applications development

June 2001	M.Sc. in Computer Science
1996 – 2001 (5 years)	Comenius University, Bratislava, Faculty of Mathematics, Physics and Informatics Specialization: Computer Science – Artificial intelligence, Parallel computation Master Thesis: Conceptual representation, connectionism and language [pdf 1.5MB, ps.bz2 740kB (in slovak)] Thesis is concerned in importance and properties of conceptual representation, the third level of information representation (beside symbolic and connectionistic level) within intelligent systems, as proposed by Peter Gardenfors. I have addressed language semantics, geometric aspects of conceptual spaces and described real-world application of conceptual representation paradigm in area of computer vision. In the experimental section I have demonstrated emergence of a common vocabulary over conceptual representation in multiagent system, where each agent uses simple recurrent neural network to transform conceptual space vectors into symbolic expressions and vice versa.
1992 – 1996 (4 years)	High school, Gymnázium Jura Hronca, Novohradská 1, Bratislava Specialization: Mathematics, Physics, Informatics

level	description
5	Expert
4	Advanced understanding
3	Thorough understanding
2	Some experience, good working understanding
1	Limited understanding of skill area, little actual experience

	skill	level	months	last used

Analysis/design/modeling	ER data modeling	5	99	present
	UML modeling	3	36	2009
	API designing	4	99	present

Programming languages	C#	4	60	present
	PHP	5	99	present
	JavaScript	5	99	present
	C (embedded systems)	4	60	2011
	Java	2	6	2004
	Smalltalk	2	4	2000
	Lisp	2	4	2000
	Object Pascal	4	36	2000
	C++	2	6	2000
	Perl	2	6	2005
	Shell scripting (Linux/Win32)	5	99	present
	Regular expressions	5	99	present
	i86 assembler	3	12	1998

RDBMSs	SQL, PL/SQL general	5	99	present
	PostgreSQL	5	99	present
	MSSQL	3	36	2011
	MySQL	3	12	2005
	Sybase	3	12	2002
	Oracle	2	6	2001

Web technologies/standards	HTML	4	99	present
	CSS	4	99	present
	JavaScript, DHTML/DOM scripting	4	99	present
	Web 2.0 technologies	4	60	present
	ASP.NET	4	36	2011
	XML/XSLT	3	12	2005
	Web services (SOAP/JSON)	3	60	present
	MVC pattern	5	99	present

Web servers	Apache	4	99	present
	IIS	3	24	2011

Other technologies	.NET class library	4	60	present
	Win32 API	3	24	2002
	COM/DCOM/COM+	3	12	2002

Managing skills	Project management	3	99	present

Domain specific knowledge	Web application development (architecture, security, deployment, scaling, performance optimization)
	Content management systems
	E-learning systems
	Data access layers
	Web server management, automated monitoring systems
	Embedded systems, development for resource constrained setups

Best practices	Architectural/design pattern awareness
	Test driven development
	Multithreading/concurrency awareness
	Programming style

2002 – present	NUSTEP s.r.o., Bratislava Software Architect, Senior Developer lead architect of several model driven web application frameworks: NUSTEP CMS – content management framework (2002 – 2007) Technology/platform: Linux, PHP, PostgreSQL, HTML/DHTML architecture: more... ▼ content store relational, hierarchical content store with (user editable) content classes CRUD API, supporting content versioning, workflow multilingual content attributes content query – parametric querying API (by means of dynamic SQL) model driven: application domain model is directly mapped onto content classes CMA – content management application CDA – content delivery application stateful, component MVC based content delivery layer Smarty template engine incorporated as view layer rendered snippet caching layer, supporting explicit invalidation, based on content store triggers several crucial helpers/components record editor helper fully automatic, metadata (content class) based webform generator input widgets for all basic attribute data types and associations (1–N, M–N) management of webform lifecycle (display, submit, validation/redisplay-on-error, data apply) DHTML WYSIWYG editor component object-oriented JavaScript wrapper to MSHTML editing platform, supported by IE 5.5+ MS-Office clipboard integration with highly effective filter of dirty HTML content plugins content class based (Newsletter, Mailing list) functional (RSS feed) applications: several complex corporate/communal portals, e.g. kros.sk (leading Slovak economic sw. vendor), trencin.sk (City of Trencin), litcentrum.sk (Slovak Literary Information Center), each of which contains among visitor (B2C) front-end also rich intranet front-end (document management, visitor initiated workflows, etc.) TinyRails.PHP – independent implementation of Ruby-on-Rails MVC framework concept for PHP(2005 – present) Technology/platform: Linux/Win32, PHP, MySQL/PostgreSQL/MSSQL architecture: more... ▼ model, controller, view, front controller, pre/post-filter, helper model driven: application domain model is directly mapped onto rails models default model implementation (standard common ancestor for application entity models) based on active record approach CRUD operations metadata based functionality data validation (attribute and record level) role based security default controller implementation (standard common ancestor for application controllers) implements typical entity actions (list, view, edit/insert, delete) view layer (+ default implementation using Smarty templating engine) several crucial helpers DAL – data access layer based on PEAR DB (adds some useful metadata based common functionality on the top of PEAR DB abstraction) webform generator helper, based on model metadata (similar as used in CMS.PHP) fully automatic, model metadata based webform generator input widget classes for all basic attribute datatypes and associations (1–N, M–N) management of webform lifecycle (display, submit, validation/redisplay-on-error, data apply) record/rercordset presenters (based on model metadata) application scaffold generator generates default models, controllers, views and locale strings, based on ER model in the form of Excel document I18N helper interface to model (localization of entity titles, attribute titles, validation messages, etc.) interface to source files (localization of literal strings used in PHP application sources) interface to default view implementation (localization of literal strings used in view templates) automated locale string files generator applications: commercial: SmartForms – enterprise web survey application, allowing non-technical users to interactively design complex online surveys, provides data collection, reviewing, export and statistical analysis. TinyLMS – e-learning & student collaboration server several internal applications NUSTEP CMS.NET – .NET port of CMS.PHP concept(2004 – 2009) Technology/platform: Win32, .NET(C#), MSSQL/PostgreSQL architecture: more... ▼ ORM layer in 2004 there was lack of usable ORM tools for .NET => development of in-house ORM layer metaprograming/reflection based object-relational mapping tool several RDBMS plugins/drivers (of which MSSQL and PostgreSQL used in production environment) mapping of all primitive types (string, bool, int, float, datetime, enum, set, reference) to appropriate column types OO awareness – inheritance between persistent classes can be mapped to multiple tables (associated by PK) or flatten into single table native .NET infrastructure integration (ADO.NET) object identity (map of retrieved instances is maintained; when same record is retrieved several times, unique instance is guarantied) transaction awareness lazy loading of association graph powerful parametric query abstraction (by means of dynamic SQL) CDA and CMA implemented by means of conventional ASP.NET scripting, although common helper is used to build entity (content class) data entry screens well documented API test driven development applications: several web portals via partners (Core4 s.r.o.)
2001 – 2002 (13 months)	Comenius University, Bratislava (civil military service) Application Developer Project: Exchange delivery filter COM+ component service application for mail delivery filtering at Comenius University. DNSBL, anti-virus, user-definable rule filter modules, remote configuration. Technology/platform: Windows NT 5, MS Exchange 2000 integration, COM+, XML
1998 – 2001 (4 years)	Omikron Eta, Bratislava Software Engineer, Application Developer Project: Zimná služba SSC (Slovak road administration institution) Distributed IS for collecting, processing and publishing weather and road conditions data. GIS engine module, providing spatial data visualization, interactive user interface (dispatcher console). Technology/platform: Windows NT, Delphi/Object Pascal, Sybase SQL Anywhere, COM, XML/XSLT Project: IS for travel agency Travel agency information system containing modules CRM (customer relationship management), Accommodation catalogue, Web content delivery application. MS-Office, Corel Draw reporting integration. Technology/platform: Windows NT, Delphi/Object Pascal, COM, PHP, MySQL Project: Application modules for Wanadoo portal Application modules for wanadoo portal for Globtel corp. (now Orange), major Slovak GSM service provider. Technology/platform: Sun Solaris, PHP, Oracle 9i, HTML/DHTML

2002 – present

NUSTEP s.r.o., Bratislava
Software Architect, Senior Developer

lead architect of several model driven web application frameworks:
- NUSTEP CMS – content management framework (2002 – 2007)
  - Technology/platform: Linux, PHP, PostgreSQL, HTML/DHTML
  - architecture: more... ▼
    - content store
      
      relational, hierarchical content store with (user editable) content classes
      
      CRUD API, supporting content versioning, workflow
      
      multilingual content attributes
      
      content query – parametric querying API (by means of dynamic SQL)
      
      model driven: application domain model is directly mapped onto content classes
    - CMA – content management application
    - CDA – content delivery application
      
      stateful, component MVC based content delivery layer
      
      Smarty template engine incorporated as view layer
      
      rendered snippet caching layer, supporting explicit invalidation, based on content store triggers
    - several crucial helpers/components
      
      record editor helper
      
      fully automatic, metadata (content class) based webform generator
      
      input widgets for all basic attribute data types and associations (1–N, M–N)
      
      management of webform lifecycle (display, submit, validation/redisplay-on-error, data apply)
      
      DHTML WYSIWYG editor component
      
      object-oriented JavaScript wrapper to MSHTML editing platform, supported by IE 5.5+
      
      MS-Office clipboard integration with highly effective filter of dirty HTML content
    - plugins
      
      content class based (Newsletter, Mailing list)
      
      functional (RSS feed)
  - applications:
    - several complex corporate/communal portals, e.g. kros.sk (leading Slovak economic sw. vendor), trencin.sk (City of Trencin), litcentrum.sk (Slovak Literary Information Center), each of which contains among visitor (B2C) front-end also rich intranet front-end (document management, visitor initiated workflows, etc.)
- TinyRails.PHP – independent implementation of Ruby-on-Rails MVC framework concept for PHP(2005 – present)
  - Technology/platform: Linux/Win32, PHP, MySQL/PostgreSQL/MSSQL
  - architecture: more... ▼
    - model, controller, view, front controller, pre/post-filter, helper
    - model driven: application domain model is directly mapped onto rails models
    - default model implementation (standard common ancestor for application entity models)
      
      based on active record approach
      
      CRUD operations
      
      metadata based functionality
      
      data validation (attribute and record level)
      
      role based security
    - default controller implementation (standard common ancestor for application controllers)
      
      implements typical entity actions (list, view, edit/insert, delete)
    - view layer (+ default implementation using Smarty templating engine)
    - several crucial helpers
      
      DAL – data access layer based on PEAR DB (adds some useful metadata based common functionality on the top of PEAR DB abstraction)
      
      webform generator helper, based on model metadata (similar as used in CMS.PHP)
      
      fully automatic, model metadata based webform generator
      
      input widget classes for all basic attribute datatypes and associations (1–N, M–N)
      
      management of webform lifecycle (display, submit, validation/redisplay-on-error, data apply)
      
      record/rercordset presenters (based on model metadata)
      
      application scaffold generator
      
      generates default models, controllers, views and locale strings, based on ER model in the form of Excel document
      
      I18N helper
      
      interface to model (localization of entity titles, attribute titles, validation messages, etc.)
      
      interface to source files (localization of literal strings used in PHP application sources)
      
      interface to default view implementation (localization of literal strings used in view templates)
      
      automated locale string files generator
  - applications:
    - commercial:
      - SmartForms – enterprise web survey application, allowing non-technical users to interactively design complex online surveys, provides data collection, reviewing, export and statistical analysis.
      - TinyLMS – e-learning & student collaboration server
    - several internal applications
- NUSTEP CMS.NET – .NET port of CMS.PHP concept(2004 – 2009)
  - Technology/platform: Win32, .NET(C#), MSSQL/PostgreSQL
  - architecture: more... ▼
    - ORM layer
      
      in 2004 there was lack of usable ORM tools for .NET => development of in-house ORM layer
      
      metaprograming/reflection based object-relational mapping tool
      
      several RDBMS plugins/drivers (of which MSSQL and PostgreSQL used in production environment)
      
      mapping of all primitive types (string, bool, int, float, datetime, enum, set, reference) to appropriate column types
      
      OO awareness – inheritance between persistent classes can be mapped to multiple tables (associated by PK) or flatten into single table
      
      native .NET infrastructure integration (ADO.NET)
      
      object identity (map of retrieved instances is maintained; when same record is retrieved several times, unique instance is guarantied)
      
      transaction awareness
      
      lazy loading of association graph
      
      powerful parametric query abstraction (by means of dynamic SQL)
    - CDA and CMA implemented by means of conventional ASP.NET scripting, although common helper is used to build entity (content class) data entry screens
    - well documented API
    - test driven development
  - applications:
    - several web portals via partners (Core4 s.r.o.)

2001 – 2002
(13 months)

Comenius University, Bratislava (civil military service)
Application Developer

Project: Exchange delivery filter
COM+ component service application for mail delivery filtering at Comenius University. DNSBL, anti-virus, user-definable rule filter modules, remote configuration.
Technology/platform: Windows NT 5, MS Exchange 2000 integration, COM+, XML

1998 – 2001
(4 years)

Omikron Eta, Bratislava
Software Engineer, Application Developer

Project: Zimná služba SSC (Slovak road administration institution)
Distributed IS for collecting, processing and publishing weather and road conditions data.
GIS engine module, providing spatial data visualization, interactive user interface (dispatcher console).
Technology/platform: Windows NT, Delphi/Object Pascal, Sybase SQL Anywhere, COM, XML/XSLT

Project: IS for travel agency
Travel agency information system containing modules CRM (customer relationship management), Accommodation catalogue, Web content delivery application. MS-Office, Corel Draw reporting integration.
Technology/platform: Windows NT, Delphi/Object Pascal, COM, PHP, MySQL

Project: Application modules for Wanadoo portal
Application modules for wanadoo portal for Globtel corp. (now Orange), major Slovak GSM service provider.
Technology/platform: Sun Solaris, PHP, Oracle 9i, HTML/DHTML

Čestmír Hýbl – Curriculum Vitae

Skills – summary

Professional Experience – summary

Education

Skills, technologies, practices – detailed

Professional Experience – detailed

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