Martin
Slezák

senior backend developer

Experienced software developer with over 20 years in the industry, specializing in .NET technologies and modern architecture patterns. Since 2016 I have worked as a freelancer on diverse projects including logistics, e-commerce, travel platforms and blockchain innovations, after eight years at ATS implementing MES systems for global clients like Carlsberg, Coca-Cola or Airbus.
1998in IT since
2016freelancing since
.NET 10current stack

Work experience

Freelancer – senior backend developer

11/2016 – present

  • 02/2023 – present

    Notino – Consumables

    Green-field project for managing consumable materials for one of the leading online perfume retailers.

    .NET 10DDDClean architectureKafkaKubernetesxUnitMoqMSSQLEntity FrameworkDapper
  • 11/2021 – 12/2022

    Chyron – Rewriting NewsTicker to .NET 6

    Rewriting an outdated Perl-based project to .NET.

    .NET 6MSSQLRazorxUnit
  • 05/2021 – 10/2021

    CGE – Shell Fleet Hub

    Joined an already running development of the Shell Fleet Hub application.

    .NET Core.NET FrameworkT-SQL
  • 12/2019 – 04/2021

    Mountfield – Trade Order Management

    Working together with colleagues from Intelligent Studios on the internal trade system – from cart and service up to replenishment and inventory. Application for one of the largest hobby market chains in CZ/SK.

    .NET CoreT-SQLAngular 2+RabbitMQ
  • 01/2019 – 11/2019

    Siesta.Cloud

    Revolutionary travel ecosystem. Contributing to the overall architecture as well as getting hands dirty with backend development.

    .NET CoreAbp.ZeroAngular 2+Azure
  • 11/2018 – 12/2018

    ADEL.io

    An incubator for blockchain innovation. Working as a senior developer / architect.

    .NET CoreAbp.ZeroAngular 2+Azure
  • 07/2017 – 10/2018

    Siesta Solution

    Hotel reservation system. Jumped into an already running project as a senior developer.

    .NET FrameworkMS LightSwitchAzure
  • 12/2016 – 02/2017

    Gremlin Social

    Took over the development of the website and web services.

    .NET FrameworkASP.NET with Razor
  • 11/2016 – 06/2017

    Albatros Media

    Cooperation on the e-shop for the Czech publishing house Albatros.

    .NET CoreAngular

Earlier career

  • 08/2008 – 10/2016

    ATS aplikované technické systémy s. r. o. — Senior application engineer

    • MES system implementations for international customers
    • Development of MES user interfaces
    ASP.NETC#JavaScriptSIMATIC ITBusiness ObjectsWCFMS SQL incl. Reporting Services
    Carlsberg Breweries A/SUnited Kingdom, Switzerland

    User interface for the Carlsberg MES application.

    Coca-Cola EnterprisesItaly, Netherlands

    Part of the Siemens implementation team, mainly on the user interface.

    DSM DyneemaUSA, Netherlands

    On-site support engineer.

    COSTCOUSA

    SIMATIC IT with custom UI on AngularJS and Microsoft REST services (Web API, OData).

    AirbusGermany, France

    Proactive Maintenance – service application based on SIMATIC IT.

    AVEBENetherlands

    User interface for the AVEBE MES solution.

    SelkoNetherlands

    Upgrade to SIMATIC IT 6.5 and custom pages.

    Pelican Rouge Coffee RoastersNetherlands

    UI upgrade on AngularJS and Microsoft REST services (Web API, OData).

  • 02/2004 – 07/2008

    BLOCK a. s. — IT specialist

    • Microsoft server products – Windows 2000/2003 Server, Exchange 2000/2003, SQL Server 2000
    • Programming in VB.NET, MS Access, PHP
    • GNU/Linux server administration
    • IS Microsoft Navision Attain 3.60
    • Wide area network across five branches in the Czech Republic
  • 09/2003 – 01/2004

    Language and work stay in Australia

    • Twelve-week intensive English course at Shafston International College, Brisbane – finished at upper intermediate level
    • Work in hospitality and services (Rugby World Cup, Gabba Cricket Stadium, Melbourne Cup)
  • 01/2002 – 08/2003

    BLOCK a. s. — IT engineer

    • Microsoft server products – Windows NT 4.0 / 2000 Server, Exchange Server
    • Programming in MS Visual Basic, Linux + PHP + MySQL
  • 10/1998 – 12/2001

    CAD-PRO s. r. o. — IT engineer

    • 3D model designer and administrator of a Windows NT 4.0 network (about 25 computers)
    • Programming in MS Visual Basic, VBA, HTML
    • MicroStation 95, AutoCAD R14, Corel 8.0, SPIRIT 8.0 (CAAD)

Education

1999 – 2004

Palacký University OlomoucBachelor's degree in computer science

1996 – 1998

Brno University of TechnologyCivil engineering (not finished)

1992 – 1996

SPŠ stavební Valašské MeziříčíCivil engineering