Ján Osadský

Senior Developer

Ján Osadský
Slovakia

Experience

Aug 2025 - Oct 2025
3 months

Senior Developer

JOS GROUP s. r. o.

  • QUART (Quality Assurance Radio Transmission) is a small application used at ORF, which receives broadcasts from the Editorial System (RedSys), manages broadcasts (create, edit, etc.), creates tickets in Omnitracker and manages final reports (create, generate PDF, etc.)

  • Task: analysis, development and testing

  • Development and testing with C#, .NET 9.0, REST services, Unit/xUnit tests, Hexagonal architecture, DDD, HTML5, CSS, TypeScript, Angular, Docker, AWS

  • Environment: MS Visual Studio 2022 on Windows 11

  • Client: ORF

Sep 2024 - Dec 2025
1 year 4 months

Senior Developer

JOS GROUP s. r. o.

  • Minol is a CRM application that supports Minol's business processes (heating and operating costs, energy, etc.)

  • Task: analysis, development and testing

  • Implementation of C# and JavaScript CRM plugins and customizations with C#, .NET 7.0, REST services, Unit/xUnit tests, JavaScript, jQuery, Bootstrap, TypeScript, Microsoft Dynamics 365, CRM SDK, SAP

  • Environment: MS Visual Studio 2021 on Windows 10

  • Client: Minol

Aug 2024 - Oct 2024
3 months

Senior Developer

JOS GROUP s. r. o.

  • HWBO is a web application to support the craftsman bonus for flood/storm damage (painting, tiling, drying or clearing work)

  • Task: analysis, development and testing

  • Development with C#, .NET 4.8, ASP.NET MVC, Entity Framework, web services, ASP.NET Razor, Unit/xUnit tests, jQuery, Bootstrap, TypeScript, MS SQL, Scrum, Azure DevOps

  • Environment: MS Visual Studio 2019 on Windows 10

  • Client: Federal Computing Center (BRZ)

Jul 2021 - Mar 2022
9 months

Senior Developer

JOS GROUP s. r. o.

  • Leiner Application project includes several subprojects to support the sales process for customers, including combining assembly and delivery with price calculation and adapting existing web services

  • Task: analysis, development and testing

  • Development with C#, .NET 4.8, Entity Framework, REST services, Angular, TypeScript, Bootstrap, Angular Material, xUnit tests, MS SQL, Scrum, Azure DevOps

  • Environment: MS Visual Studio 2019 on Windows 10

  • Client: ItsDone Holding GmbH (Kika, Leiner)

Oct 2020 - Jul 2024
3 years 10 months

Senior Developer

JOS GROUP s. r. o.

  • COFAG is a web application to support the Austrian economy in the corona crisis with guarantees and fixed cost grants, from application through evaluation to approval and payment

  • Task: analysis, development and testing

  • Development with C#, .NET 4.8, ASP.NET MVC, Entity Framework, web services, ASP.NET Razor, Unit/xUnit tests, jQuery, Bootstrap, TypeScript, MS SQL, Scrum, Azure DevOps

  • Environment: MS Visual Studio 2019 on Windows 10

  • Client: Federal Computing Center (BRZ)

Jul 2020 - Sep 2020
3 months

Senior Developer

JOS GROUP s. r. o.

  • Azkaban is a web application supporting mobile device unlock procedures

  • Tasks: analyzing, developing, and testing

  • Development using C#, .NET 4.8, Domain Driven Design, Onion Architecture, Entity Framework, REST Services, ASP.NET Blazor, xUnit tests, MS SQL, Scrum, Azure DevOps

  • Environment: MS Visual Studio 2019 on Windows 10

  • Client: Hutchison Drei Austria GmbH

Nov 2019 - Jun 2020
8 months

Senior Developer

JOS GROUP s. r. o.

  • PA3000 is a web application for the personal agenda of the state office staff (time booking, travel order management, pool car management, travel expense subsidy, assignment and transfer fees) with approval workflows, admin and reports, communication with external systems (Interflex, RK, IPA, etc.)

  • Tasks: analyzing, developing, and testing

  • Development using C#, .NET 4.8, ASP.NET MVC, ReSharper, Entity Framework, Web Services, ASP.NET Razor, unit/xUnit tests, jQuery, Bootstrap, TypeScript, MS SQL, Scrum, Azure DevOps

  • Environment: MS Visual Studio 2019 on Windows 10

  • Client: Office of the Lower Austria State Government

Jun 2019 - Oct 2019
5 months

Senior Developer

JOS GROUP s. r. o.

  • Vita is an integrated system for the Wien Social Fund (FSW) for provider management, customer management, and company control, supporting core processes efficiently

  • Tasks: analyzing, developing, and testing in the ORG and KAT modules

  • Development using C#, .NET 4.8, ReSharper, Entity Framework, Domain Driven Design, SOA, self-hosted WCF services, unit/xUnit tests, SpecFlow tests, GIT, Angular 8, jQuery, Bootstrap, Telerik Kendo UI, MS SQL, CSS3, HTML5, Azure DevOps, Scrum

  • Environment: MS Visual Studio 2017 on Windows 10

  • Client: Wien Social Fund (FSW)

Apr 2019 - Aug 2019
5 months

Senior Developer

JOS GROUP s. r. o.

  • ZRV Sync Manager is a control application for the Central Electronic Legal Communication (ZRV) and utilities for monitoring, control, and reporting for Rubicon applications (PAD/VSTV…) via ERV services

  • Tasks: analyzing, developing, testing, troubleshooting

  • Development using C#, .NET 4.7, ReSharper, Entity Framework, SOAP, REST, WCF service, MS SQL, XAML, WPF, MS SQL update scripts, Azure DevOps

  • Environment: MS Visual Studio 2017 on Windows 10

  • Client: Austrian Federal Ministry of the Interior (BMI)

Jun 2018 - Oct 2018
5 months

Senior Developer

JOS GROUP s. r. o.

  • CONTENTShare is a WPF application for sharing documents with customer-specific sections (invoice management, customer support, etc.)

  • Tasks: analyzing, developing, and testing

  • Development using C#, .NET 4.6, ReSharper, Entity Framework, MVVM, MS SQL, XAML, WPF, SVN, WCF service, IIS, unit tests, SQL stored procedures

  • Environment: MS Visual Studio 2015 on Windows 10

  • Client: CS-nine GmbH

Nov 2017 - Aug 2019
1 year 10 months

Senior Developer

JOS GROUP s. r. o.

  • BMI Tool Manager automates tests of various ASP.NET Rubicon applications in the operations of the Ministry of the Interior and provides a quick overview of issues with screenshots

  • Tasks: analysis, development, testing, error analysis

  • Developed with C#, .NET 4.7, ReSharper, Entity Framework, Caliburn.Micro, MVVM, MS SQL, XAML, WPF, TFS, Selenium Chrome Driver

  • Environment: MS Visual Studio 2015 & 2017 on Windows 10

  • Client: Austrian Federal Ministry of the Interior (BMI)

Jul 2017 - Oct 2017
4 months

Senior Developer

JOS GROUP s. r. o.

  • Portfolio Viewer is an AngularJS application providing an overview of energy portfolios (gas, electricity, etc.) for better decision making in trading

  • Tasks: analysis, frontend development and testing

  • Developed with JavaScript, AngularJS, Node.js, grunt, karma, XML, JSON, CSS3, HTML5, jQuery, responsive web design, Bootstrap, SCRUM, JIRA, SVN

  • Environment: Visual Studio Code on Windows 10

  • Client: Kisters

Aug 2016 - Oct 2017
1 year 3 months

Senior Developer

JOS GROUP s. r. o.

  • EDS Transfer Pricing optimizes electricity sales through simulations based on OpenLink IRM contracts to achieve optimal selling prices

  • Tasks: analysis, development and testing

  • Developed with C#, .NET 4.6, ReSharper, Entity Framework, Caliburn.Micro, MVVM, Oracle 11, PL/SQL Developer, XAML, WPF, SCRUM, JIRA, SVN

  • Environment: MS Visual Studio 2013 on Windows 10

  • Client: OpenLink

Jul 2016 - Aug 2016
2 months

Senior Developer

JOS GROUP s. r. o.

  • Solvay Gas Scheduling plans gas sales with simulations based on OpenLink IRM contracts for optimal selling prices

  • Tasks: analysis, development and testing

  • Developed with C#, .NET 4.6, ReSharper, Entity Framework, Caliburn.Micro, MVVM, Oracle 11, PL/SQL Developer, XAML, WPF, SCRUM, JIRA, SVN

  • Environment: MS Visual Studio 2013 on Windows 10

  • Client: OpenLink

Feb 2016 - Jul 2016
6 months

Senior Developer

JOS GROUP s. r. o.

  • IRM Regulatory Reporting Desktop is a solution for reporting from IRM TradeExpress with auditing, error monitoring, and bidirectional communication with registration agencies (EFETnet eRR, REGIS-TR)

  • Tasks: analysis, development and testing

  • Developed with C#, .NET 4.6, ReSharper, Entity Framework, Caliburn.Micro, MVVM, Oracle 11, PL/SQL Developer, XAML, WPF, SCRUM, JIRA, SVN

  • Environment: MS Visual Studio 2013 on Windows 10

  • Client: OpenLink

Sep 2014 - Feb 2016
1 year 6 months

Senior Developer

JOS GROUP s. r. o.

  • BackBüro Apps (BB sales support app, BB order management app) support the sales of BackBüro software solutions

  • Responsibilities: Analyzing, task estimation, sub-project management, partial development, design

  • Sub-project management of a team (2 people) using HTML5, CSS, AJAX, JavaScript, jQuery, Knockout, DevExpress, single-page technology

  • Environment: MS Visual Studio 2013 on Windows 7

  • Client: bochmann. SoftwareTechnologie | MediaAgentur

Sep 2013 - Feb 2016
2 years 6 months

Senior Developer

JOS GROUP s. r. o.

  • BackBüro is industry software for bakers, pastry chefs and gingerbread makers to manage sales items, purchasing items, recipes and orders with a labeling feature

  • Responsibilities: Analyzing, designing, developing, testing, documentation, task estimation, development of controls in MFC

  • Senior developer of a team (3 people) using C++, SQL, MFC, XML, XSD, Scrum, Boost, RapidXML, zlib; prototypes in C#

  • Environment: MS Visual Studio 2013 on Windows 7

  • Client: bochmann. SoftwareTechnologie | MediaAgentur

Sep 2012 - Jul 2013
11 months

Senior Developer

JOS GROUP s. r. o.

  • ETCS-SW Test Environment (ESTE) is a testing environment for deterministic cycle simulation of the ETCS software for integration tests

  • Responsibilities: Analyzing, designing, developing, testing, documentation (V-Model, features, system requirements, standards EN/CENELEC/UNISIG/ERA/IEC, interface specs, architectural and detailed design), work package estimation

  • Senior developer of a team (5 people) using C, C++, XML-RPC, Scrum, Qt, Expat, STL, multithreading, MVB bus data transfer, Doxygen

  • Environment: Emacs, gedit on Red Hat Enterprise Linux Server 5.3

  • Client: Thales Austria GmbH

Nov 2011 - Aug 2012
10 months

Senior Developer

JOS GROUP s. r. o.

  • TTX-DataLoggerTool supports validation, troubleshooting and calibration in automotive systems with interfaces to CAN, FlexRay, digital, analog, MOST, LIN, RS232, recording all vehicle network data into trace files and remote control of the data logger

  • Responsibilities: Design (Enterprise Architect, MKS), development, documentation (V-Model), testing, configuration management (Python)

  • Development with C#, .NET 4.0, XML-RPC, WPF, XAML, MVVM, Silverlight, WCF RIA Services, MVC

  • Environment: MS Visual Studio 2010 on Windows XP

  • Client: TTTech Computertechnik (Audi)

Aug 2011 - Nov 2011
4 months

Senior Developer

JOS GROUP s. r. o.

  • OVALO ILS ECU is an integrated overlay steering system for automobiles with speed-dependent power steering assistance

  • Responsibilities: Analyzing, developing and testing, safety concept, documentation (V-Model), hardware simulation, DaVinci Configurator

  • Development of drivers (B6 PWM driver, rotor position sensor, lock-pin actuator) in embedded C (MISRA, double buffer), safety programming according to ISO 26262, IEC61508, ASIL A, N2HET PWM signals

  • Environment: HET IDE 2.6, TMS470 compiler, Windows XP, MicroSar AUTOSAR 3.0

  • Client: TTTech Computertechnik (BMW, Audi)

Dec 2009 - Jun 2011
1 year 7 months

Senior Developer

JOS GROUP s. r. o.

  • ETCS-SW Test Environment (ESTE) is a test environment for deterministic cycle simulation of ETCS software for integration tests

  • Tasks: analyzing, developing, testing, documentation (V-Model)

  • Sole responsibility using C, C++, XML-RPC, Scrum, Qt, STL, multi-threading

  • Environment: Emacs, Qt 4.6.2 on Red Hat Enterprise Linux Server 5.3

  • Client: Thales Austria

Aug 2009 - Nov 2009
4 months

Senior Developer

JOS GROUP s. r. o.

  • IOP interface implements interoperability between Test Control and Logging (TCL) and the ETCS software for simultaneous train run simulations

  • Tasks: developing, testing, documentation (V-Model)

  • Development with Embedded C, XML-RPC, Scrum

  • Team of 7 people

  • Environment: Emacs on Red Hat Enterprise Linux Server 5.3

  • Client: Thales Austria

May 2009 - Jul 2009
3 months

Senior Developer

JOS GROUP s. r. o.

  • DNN Development SMA_UK is a web application for product sales for Wyeth

  • Tasks: developing and testing

  • Development in C#, HTML, JavaScript, AJAX, CSS, XML, web services, SOAP

  • Team of 15 people

  • Environment: Microsoft Visual Studio 2008, .NET 3.0 on Windows XP

  • Client: ACP IT Solutions (Wyeth)

Aug 2008 - Jun 2009
11 months

Senior Developer

JOS GROUP s. r. o.

  • Parking is a hardware and software solution to automate parking processes with parking barrier machines, payment modules (coins, banknotes, cards), configuration via card/internet, bank communication (SityControl/SityClient, SityCollect) over GSM/GPRS

  • Tasks: project leadership, analyzing, developing and testing

  • Project management and programming in Embedded C, Scrum Master, team of 3 people

  • Environment: X32, Windows XP, Embedded OS Y

  • Client: ANF Data (Siemens, city administrations of Munich, Paris, Stuttgart, Copenhagen)

Jan 2008 - Aug 2008
8 months

Developer

JOS SOFTWARE

  • IFX-SPS and IFX-SPS-Compact manage products, versions and structures (hierarchies) of products; the compact variant is a stripped-down version

  • Tasks: analyzing, developing and testing

  • Development in C#, ASP.NET 1.1, SQL, XBAP, WPF, stored procedures, JavaScript, HTML, .NET 3.0 XBAP, web services, SOAP, Scrum

  • Team of 2 people

  • Environment: Visual Studio 2003 & 2008 on Windows XP

  • Client: ANF Data (Infineon)

Nov 2007 - Dec 2007
2 months

Developer

JOS SOFTWARE

  • MVB driver enables communication between PVSS (process control) and hardware over the MVB bus (e.g. in trains)

  • Tasks: development and testing

  • Sole responsibility for C++, socket programming, hooks, Win32 API, MVB bus

  • Environment: Visual Studio 6.0 on Windows 2000 Embedded

  • Client: ANF Data (Siemens, ÖBB, Wiener Linien, New York Subway)

Aug 2007 - Nov 2007
4 months

Developer

JOS SOFTWARE

  • VDS TestTools is a tool for testing the Traffic Data Server (VDS) and a simulation toolbox (JLo)

  • Tasks: development and testing

  • Development in Java (Swing, RMI, Jini, SAL, XML, Log4j), Scrum

  • Team of 4 people

  • Environment: JDK 5.0 on Windows XP & Linux Server

  • Client: ANF Data (Siemens Munich, Stuttgart)

Jul 2006 - Jul 2007
1 year 1 month

Developer

JOS SOFTWARE

  • Facet Editor is an extension of the Facet Builder in the Step7 Extension Package for Automation Designer 2008 for GUI-based facet creation and editing

  • Tasks: analysis, development and testing

  • Development in C#, XML, Win32 API, Scrum; tests with NUnit

  • Team of 5 people

  • Environment: Visual Studio 2003 on Windows XP

  • Client: Siemens AG, Moorebrunn Nuremberg

Oct 2005 - Jun 2006
9 months

Developer

JOS SOFTWARE

  • Code Generator in the Step7 Extension Package for Automation Designer 2006 reads facet projects and creates Step7 large-scale projects for production automation

  • Tasks: analysis, development and testing

  • Development in C#, XML, COM, Scrum

  • Team of 3 people

  • Environment: Visual Studio 2003 on Windows XP

  • Client: Siemens AG, Moorebrunn Nuremberg

Aug 2005 - Jan 2006
6 months

Developer

JOS SOFTWARE

  • Facet Builder in the Step7 Extension Package for Automation Designer 2006 creates facets (Project, PLC, Resource, OM/EM, Self Controlled Resource) for SIMATIC Manager Step7

  • Tasks: analysis, development and testing

  • Sole responsibility for C#, XML, Win32 API, Scrum

  • Environment: Visual Studio 2003 on Windows XP

  • Client: Siemens AG, Moorebrunn Nuremberg

May 2004 - Oct 2004
6 months

Developer

Together tímové riešenia s.r.o.

  • TRF 2004 Patent Office: extension of a Fabasoft application for configurable invoices, purchase orders, batch invoices, payment slips, and VAT number validation

  • Tasks: analyzing, developing, and testing

  • Development in Fabasoft, Visual Basic 6, Crystal Reports 6

  • Team of 3 people

  • Environment: Visual Studio 6.0 on Windows 2000

  • Client: Austrian Patent Office

Jan 2003 - Jul 2005
2 years 7 months

Developer

Together tímové riešenia s.r.o.

  • Together Document Management in TGW Groupware Framework for document management (viewing, editing, checking in/out, versioning, deleting, printing, email attachments, drag & drop, copy & paste) and embedding custom properties with Excelsior JET native compilation

  • Tasks: analyzing, developing, and testing

  • Development Server: Java Servlets, JSP; Client: HTML, XML, JavaScript; LDAP integration

  • Environment: JBuilder 7–9 Enterprise on Windows 2000

  • Client: Together Teamlösungen EDV-Dienstleistungen GmbH, Vienna

Sep 2002 - Dec 2002
4 months

Developer

Together tímové riešenia s.r.o.

  • EVN development: extension of a Fabasoft product with API functions (DLL) and porting Visual Basic functions to C++ COM

  • Tasks: analyzing, developing, and testing

  • Development in C++, COM, DLLs

  • Team of 3 people

  • Environment: Visual Studio 6.0 on Windows 2000

  • Client: EVN AG

Mar 1999 - Jun 2002
3 years 4 months

Developer

NEMETSCHEK Slovensko a.s.

  • Bau for Windows: custom programming and small projects in the areas of construction site controlling, logistics, financial accounting, management accounting, equipment and plant accounting, payroll/salary, SQL/ODBC drivers and master data packages

  • Tasks: programming and testing

  • Development in C/C++

  • Team of 3 people

  • Environment: MS Visual Studio 5.0–6.0 on Windows 2000, NT 4.0, 98, Linux, AIX, HPUX

  • Client: IBD GmbH, Karlsruhe

Skills

Experience And Skills (1: Advanced, 2: Good Knowledge, 3: Basic Knowledge)

Programming Languages

  • C 1
  • Embedded C 1
  • C# 1
  • C++ 1
  • Java 3
  • Assembler 3
  • Nhet Assembler 2

Web Programming Languages

  • Html/html5 1
  • Javascript 1
  • Css, Xcss 1
  • Php 3
  • Perl 3

Web Libraries, Toolkits, Etc.

  • Bootstrap 2
  • Jquery 1
  • Angular/angularjs 1
  • Ajax 2
  • Dom 2
  • Xml 1
  • Json 2
  • Responsive Web Design 1

Frameworks, Libraries, Etc.

  • .Net Framework 1
  • Winforms 1
  • Wpf 1
  • Linq 2
  • Asp .Net 2
  • Wcf Services (Ria, Self Hosted) 2
  • Qt Framework 2
  • Mfc 3

Web Servers

  • Tomcat 3
  • Ms Iis 2

Design/software Architectural Patterns

  • Mvvm 1
  • Mvc 1
  • Ddd 2
  • Microservices 3
  • .Net Design Patterns (Gang Of Four) 2

Databases

  • Ms Sql Server 1
  • Oracle 2
  • Mysql 2

Operating Systems

  • Ms Windows 1
  • Linux 2
  • Unix 3

System & Software Testing

  • Nunit 1
  • Xunit 2
  • Specflow 2
  • Junit 3
  • Selenium Automation Testing 2

Configuration Management

  • Rational Clearcase 2
  • Svn 1
  • Git 2
  • Ms Tfs 1
  • Azure Devops Server 1

Miscellaneous

  • Ms Office 1
  • Doors 3
  • Misra 3
  • Safety Standards (Iso 26262, Iec61508, Asil) 3
  • Etcs Standards And Norms (En, Cenelec, Unisig, Era, Iec) 3
  • Doxygen 3
  • Rational Clearcase 3
  • Agile Software Development (Scrum) 1
  • Fabasoft 3
  • Aws 2
  • Docker 2

Languages

Slovak
Native
German
Advanced
English
Advanced

Education

Sep 1993 - Jun 1999

Slovak University of Technology in Bratislava

Dipl.-Ing., Software Engineering · Electrical Engineering and Information Technology · Bratislava, Slovakia

Sep 1989 - Jun 1993

High School, Skalica

Skalica, Slovakia

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