Entrepreneurial, freelance and personal projects that I founded or participated at.
(my employment-based work for SAP and PNB is listed at Resume page)
I founded Pražské cyklostezky in 2007 as a hobby project to map and describe the system of Prague cyclopaths and cyclotracks. The website has become popular among Prague residents and tourists since then.
I designed and developed the website end-to-end, I implemented backend APIs and front-end JavaScript application that loads data onto Google Map.
I worked on the second iteration of Škola v pohodě for the company Scio. This is a web portal that offers thousands of articles, essays and other resources for high school students.
The new system is built on MediaWiki, which enables better administration experience and a robust backend.
I migrated existing data onto MediaWiki, implemented custom modules and made custom changes to the MediaWiki core.
Some projects have been discontinued and are no longer available or their mission has changed. For reference, a link to the Internet web archive is provided.
I participated in building a web portal and mobile API for Lepsi Misto. This Czech NGO had a goal to build an easy communication tool for monitoring issues in any city. From a broken bench, to a pothole on a street or graffiti on a building, a citizen could take a photo with a mobile app and upload it to Lepsi Misto. The team then communicated the problem to the city officials.
The first iteration was launched in 2010 and soon had been adopted by many cities across the country. Later, the project evolved and the original idea was transformed into a tool where people can vote what their city should invest in.
I built the web application and mobile API, worked closely with web designers and a company that was building Android and iOS applications. The project was hosted at Microsoft Azure with a robust CI/CD pipeline that took any commit through test to production.
This was a startup project based on a simple idea - in Czech cities many people go for lunch every day, but they do not have time to check lunch menus of all restaurants in their neighborhood. This is where Polednicek became handy by listing menus around you at one page and helping you to make a decision where to go based on your dietary preferences.
Besides software development, I learned a lot about building a business idea from scratch, negotiating with restaurants and making customers happy.
The web presentation for a small company, which was renting vans to surfers on the Portuguese coast.
I built and configured the solution on WordPress with several available content-management modules. Additionally, I implemented a custom WordPress module for vehicle booking and its administrative part where company owners could manage customer reservations.
On the web design part I collaborated with Martin Staněk.
Web presentation of a small village in south Bohemia. The website included a custom simple management system that allowed town officials to publish announcements and legal documents on the website.
As the agenda of the municipal office grew over time, they decided to migrate to a commercial solution with extended support.
My work included web design, coding and development of the content management system, deployment and maintenance of the project.
Intranet web application for management of a customer loyalty program. Shopping mall customers received a bar code card and were collecting points for purchase made in involved shops. Collected points were interchangeable for a gift or discount.
The system was deployed in a mid-size shopping mall in the Czech Republic and was running for several years.
My work: code, design and implementation
Bonus web portal for owners of cdStudent - a CD that offered student essays and study materials.
Portal was based on PmWiki, my task was to design and implement new features into PmWiki to fulfill portal requirements.
Web portal for high school students. Site offered more than 5000 seminary works and papers to be used for school-related work.
I worked on code improvements and implementation of the administration site.
Software engineer with 15+ years of experience in architecture and development of enterprise, distributed and web applications, CI/CD pipelines and deployment on global scale and into cloud systems. I have experience with hiring and leading global and remote teams.
Specialities: Java, Kotlin, Python, Kafka, GCP, AWS, SAP HANA DB, MSSQL, Oracle, micro-services, .NET
Tech lead and scrum lead of a global remote team on Business Network Data Protection & Privacy project. This involves designing a set of applications that enable customers to download and purge data in Business Network, working closely with product management and program management on roadmap and timelines and cooperation with many teams across Ariba.
After I relocated to the San Francisco Bay Area in 2017, I continued to work on platform projects in Ariba Network, the world's largest business network and digital marketplace for Buyers and Suppliers with 3+ trillion USD in commerce transactions annually.
My team was in charge of migration of Ariba Network to SAP HANA database, where I gained expertise in migration strategies for multi-TB databases and 200+ enterprise applications.
Some of my contributions were
I am an alumni of 2019 SAP Ariba Possibilities, one year global training for top performers focused on leadership and business innovations. I mentored participants of the 2020 program.
I transferred to SAP Ariba and started to work in Ariba Network in a platform team and our mission was to migrate Ariba Network to SAP HANA database.
While I was waiting for my US work visa to be finalized, I was on-boarding with Ariba Network and was designing test strategies for large-scale migration.
I joined Concur in 2014 as a member of a new development team on the ExpenseIt project. ExpenseIt is a service that turns paper receipts into expense reports, automagically with OCR and sends them to Concur Expense.
Over the course of my presence in the project, we have significantly stabilized our server applications by moving from PHP to Java technology stack, together with major improvements in test coverage on various application levels (unit, feature, integration, API) and introduction of new deployment orchestration with Puppet.
Next we iterated on our experience and rebuilt the application stack into Python-based micro-services architecture and moved away from a relational database to NoSQL storage and proper queue-based mechanisms. Concurrently, we designed new APIs, closely with our mobile development team.
I was responsible for end-to-end development of web based solutions on .NET technologies, including project analysis, development, testing and bug fixing.
I participated in various projects as PHP and later .NET developer, including
Computer science and software engineering.
Concur Prague Summer Hack Days 2016. Project HuntIt is an Android mobile application, the indoor locator for the Metronom Business Center, which is our new office building in Prague. It utilizes iBeacons and Bluetooth LE as proximity sensors.
The HuntIt application was awarded:
- Best Innovative Hack
- Best Movie Reference Hack
Developing and Implementing Windows-Based Applications with Microsoft Visual C# .NET and Microsoft Visual Studio .NET