Marek Sirkovský

Hi, I am Marek Sirkovský

I am a fullstack web developer with 20 years experience in various technologies and industries

About Me

About
Marek Sirkovský

Hi, I am Marek Sirkovský

  • First Name : Marek
  • Last Name : Sirkovský
  • Nationality : Czech
  • Languages : English, Czech
  • Address : Šumperk, Czech Republic
Download Resume

My Skills

Skills
8 years
Front-end Development (TS/ReactJS)
20 years
Back-end Development (ASP.NET, C#, MS SQL)
20 years
A positive and easygoing collegue
61 articles
Passion to learn and share

My Resume

Resume

Educational Qualification

1998 – 2002
High School Graduation

VOŠ a SPŠ Šumperk

Electronics

2002 – 2005
Vocational School Graduat

VOŠ a SPŠ Šumperk

IT Communication

Working Experience

2005 - 2016
Tech lead, fullstack developer - .NET & KnockoutJS

ASD Software s.r.o

From a junior developer position to tech leader and internal trainer.

2016 - 2018
Freelancer - .NET

Alza a.s

Part-time contractor within the tech leadership team, responsible for developing a new back office system based on a microservices architecture.

2016 - 2021
Freelancer - .NET & ReactJS

Various companies and projects

Developed and maintained web applications for various clients. Independently or as a part of the cross-functional teams.

2021 - 2023
Freelancer - ReactJS

Actum Digital / Christie's

Working in an international team for Christie's - a British auction house. Lead Front-End developer in a three-person team.

2023 - 2025
Freelancer - .NET

TITANS freelancers / Moody's Analytics

Working in an international team for Moody's Analytics. Back-End developer working in a team that offers analytical services to insurance companies.

2025
Freelancer - .NET & ReactJS

Transportation Sector (NDA applies)

Technical leadership and architecture role for an enterprise software solution.

My Works

Works
Christie's - international auction house headquartered in London

Developing a complex website and leading the FE team

My role was a Lead Front-End Developer within a team of three. We were building the part of Christie's website responsible for auction functionality. StencilJS, React
Pharmawell a.s. - export trading company and a chain of pharmacies

Inventory management software

I built inventory management software for the company that owns the chain of pharmacies. Additionally, I created a WPF application for bar code scanning connected to the European anti-counterfeiting system. ASP.NET MVC, WPF, and MySQL
Oblibene.cz - e-shop platform

CMS and e-shop platform

Development of the e-shop platform and the email management system. I was part of the company's internal team. ASP.NET Core, React, and MS SQL
SAB Finance - a Forex broker

UI/UX Sample design mockup

I built a WPF application for streamlining currency rates. The application was connected to the Deutsche Bank currency service. WPF + A custom-implemented actor model functionality to address the asynchronous nature of the application, MSSQL
Boruvka Kindergarten - charity event

Web application for auctioning

I built an auction web application for auctioning photos for a charity event. I created it without any compensation. ASP.NET, F#, and MSSQL
Alza a.s. - the biggest eCommerce in Czechia

Backoffice platform

I was part of a team that developed a platform for the back office. I designed and developed a scalable application comprising various bleeding-edge technologies (Presto, Apache Kafka, Apache Ignite). I also led internal workshops for employees. ASP.NET Core and MSSQL
CEMEX - leading sustainable construction materials and solutions company

Web application for planning

Developed a web application for planning the utilization of truck mixers. ASP.NET Core a React, MS SQL
Sophia Language School

Web application for teachers and students

Developed a comprehensive online application for teachers and students from Sophia Language School. ASP.NET Core a React, MS SQL
Pernamenta a.s - financial company

Online mortgage calculator

I developed an online mortgage calculator. .NET Core, ReactJS, and PostgreSQL
Junák - Czech Scouting - the largest non-formal educational NGO for children and youth in Czechia

Web application for Czech Scouting

I developed a web application that displays available scout bases on an interactive map. Next.js website running in Azure

Client Reviews (9)

Reviews
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Pip Tannenbaum

VP, Head of Digital Product Management & Delivery, Christie's

I am pleased to recommend Marek Sirkovský for any front-end development role that requires exceptional solution design, user experience expertise, and team leadership. Marek's ability to lead and mentor other developers in our team created a collaborative and productive environment. His problem-solving skills, attention to detail, and dedication to clean code made him an invaluable asset to our product team, and I am confident he will excel in any future endeavor where talent, passion, and leadership are valued.

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Natalie Younis

Tech lead in Asset management, Moody's

I'm writing to wholeheartedly recommend Marek Sirkovsky, who has been an integral part of our team at Moody's. While we're incredibly sad to see him go, we're also excited to see what he'll do next. Marek is an exceptionally experienced and deeply technical engineer. His knowledge and problem-solving abilities have been instrumental in driving our project forward, and we have learned a lot just by working alongside him. The need to understand financial concepts often adds an extra layer of complexity to the problems we need to solve and he's t...

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Ing. Jan Urban

Member of the board of Pharmawell a.s.

For our company, Marek Sirkovský created a custom warehouse and inventory application. He also carried out the transfer of data from our original inventory system and worked closely with us as the company transitioned to this new system. Cooperation with him is very pleasant.

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Marek Cabák

Executive director of Inpap plus s.r.o.

We have had a very good experience with Marek. I appreciate his professionalism, communication, and speed of delivery.

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David Urban

Product Manager

Mr. Sirkovský implemented a JS client for our own database of scouting educational events. The cooperation was problem-free, the supplier met the deadlines, and the professional audit of the code also proved that he was doing quality work. I recommend him as a developer.

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Martin Šavrnák

Owner of DUCA DEL COSMA CZECH and CZECH INDUSTRIAL TRADING

Marek Sirkovský is one of the best programmers I have had the opportunity to meet in my many years of work. He has created a lot of functional software for our companies, and we have always been satisfied with his work. Therefore, I highly recommend him and wish him success and happiness.

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Lukáš Moudrý

Owner of VálečníPtáci.cz

Marek Sirkovský helped me with my startup. He automated a lot of things that we were doing manually until then. He integrated a payment gateway, implemented a loyalty system, and a few other things. I was very satisfied with the cooperation.

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Vladan Vavruša

SW and HW consultant, database application programmer

I worked with Mark Sirkovský on several smaller and larger projects, and I can recommend him as a high-quality programmer who communicates very well.

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Ing. Hana Gajdošová Borůvková

Director of the kindergarten Borůvka Šumperk

Marek created a website and an auction portal for the Children to Children charity event. He did a high-quality job despite issues that must be dealt with quickly. I also appreciate the willingness and enthusiasm for the work.

Contact Me

Contact
Contact on phone

+420 604 792 288

Contact on mail

marek@sirkovsky.com

Contact address

Okružní 515, Vikýřovice, 788 13 (Šumperk), Czech Republic

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