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Marek Kosář, Apex Developer in Pezinok, Bratislava Region, Slovakia
Marek Kosář

Apex Developer in Pezinok, Bratislava Region, Slovakia

Member since December 1, 2016
Marek is a six-time certified senior developer—with 4 years of experience in implementation for various international clients. He has experience with end-to-end implementation and he enjoys each part of the project life cycle.
Marek is now available for hire



  • Apex, 4 years
  • Visualforce, 4 years
  • SalesForce SOQL/SOSL, 4 years
  • Developer Certification, 4 years
  • Salesforce Programming, 4 years
  • Salesforce API, 4 years
Pezinok, Bratislava Region, Slovakia



Preferred Environment

MavensMate/Sublime, IDE, GitHub

The most amazing...

...thing I've done on the platform is a custom ERP solution built on top of a package in just 4 months.


  • Senior Developer | Team Leader

    2014 - 2017
    IBM Slovakia
    • Worked as the lead developer of the SVK offshore team. I was responsible for a small team of developers and their communication with the team onsite/client.
    • Built a custom ERP on platform -which involved the development of custom functionalities in Apex: such as complex custom tool for pricing, batch/scheduled apex, triggers, automated sending of PDF and XML(EDI Interface) to the customer, Visualforce pages, and deployment management..
    • Worked as an integration specialist—using Jitterbit to connect SF with other systems on multiple projects.
    • Implemented Sales Cloud, Service Cloud, and Communities—involving the development of custom Apex classes, triggers, pages, workflows, and more.
    • Setup of Sales Cloud org—by leveraging the Lightning Experience UI.
    • Built a simple custom Lightning app.
    • Utilized CI practices using Git (Bitbucket & SourceTree), and automated deployment using Ant & Jenkins on multiple projects.
    Technologies:,, Apex, Visualforce, Lightning, Aura, CSS, HTML, JavaScript, SOQL, Rest API, SOAP API
  • Developer

    2013 - 2014
    Accenture Technology Solutions
    • Developed a custom application on the platform.
    • Developed a customer portal.
    • Configured the environments (Sales Cloud, Service Cloud).
    • Implemented customized lead management.
    Technologies:, Apex, Visualforce, HTML, CSS, JavaScript, Git


  • SFDC Implementation/Agile Ongoing Development (Lead Offshore Developer) (Development)

    As a lead developer in the Slovakian offshore team, I was responsible for small team of developers and communication with the onsite team/client in Canada.

    Apart from that, my daily job was the development of custom functionalities on the platform (Apex, Visualforce, JavaScript), code reviews, technical documentation, writing test scripts, deployment management, and leveraging Agile methodology.

  • SFDC Custom App/Communities (Lead Developer) (Development)

    Built a custom application on the platform. My contribution, as a lead developer on the project, was:
    - Custom development using Apex, Visualforce, JavaScript and other SF related technologies.
    - Upholding standards using CI practices–Git
    (Bitbucket & SourceTree), automated deployment using Ant & Jenkins.
    - Designing the technical aspects of the application based on business requirements.

  • SFDC Implementation (Lead Developer/Integration Specialist) (Development)

    Built a custom ERP solution on top of a package. My contribution was development of custom functionalities in Apex, such as:
    - A complex custom tool for pricing.
    - Batch/scheduled Apex.
    - Triggers.
    - Automated sending of PDF and XML (EDI interface) to the customer.
    - Visualforce pages.
    - Deployment management.
    - Technical documentation.

  • SFDC Implementation (Senior Developer/Integration specialist) (Development)

    Implementation of SFDC Sales Cloud, Service Cloud, and Communities. My contribution was:
    - The development of custom Apex classes, triggers, workflows, and more.
    - Integration between external systems using Jitterbit.
    - Creation of test scenarios for UAT phase.
    - Writing of technical documentation.

  • Certifications (Other amazing things)

    - Salesforce Certified Platform App Builder–07/2016.
    - Salesforce Certified Development Lifecycle & Deployment Designer–07/2016.
    - Certified Platform Developer II–09/2015.
    - Certified Platform Developer I–09/2015.
    - Certified Advanced Developer–07/2014.
    - Certified Administrator–08/2013.
    - Certified Developer–06/2013.
    - Certified Veeva Administrator.
    - University of Maryland–Programming Mobile Applications for Android Handheld Systems.


  • Languages

    Apex, SOQL, CSS3, Salesforce Object Search Language (SOSL), HTML5, JavaScript
  • Frameworks

  • Tools

    Salesforce Dataloader, Migration Tool
  • Platforms

    SalesForce SOQL/SOSL, Salesforce, Salesforce 1, IDE
  • Other, MavensMate, Salesforce Programming, Developer Certification, Certified Salesforce Administrator, Salesforce Development Community (SFDC), Jitterbit Data Loader, SOAP, Salesforce Lightning, Salesforce App Exchange
  • Libraries/APIs

    REST APIs, Salesforce API


  • Master's degree in Applied mathematics–Mathematical and Computational Modeling
    2008 - 2013
    Slovak University of Technology in Bratislava - BratislavaBratislava, Slovakia
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