Jan Trejbal

I love to create open software; you can find my work on Github. For my work, I frequently use the Nette Framework on PHP 7.2, with the help of the Symfony framework, but I transferred to ASP.NET Core.

Professional Experience

March 2017 - November 2019

Scalesoft — Software developer

My main responsibility has been to develop and maintain PHP application in the Azure. I have designed whole scalable runtime and CI/CD process on top of the Docker technology.

I changed course to ASP.NET in July 2018. My responsibility is to maintain authorization against external identity providers, communication with external services mainly with government services ISZR, and general backed development.

Technology I mastered for production environment:
PHP 5.6, then PHP 7.2 - Doctrine - Mariadb - NGINX - Docker - Memcached - ASP.NET Core - PostgreSQL

March 2016 - March 2017

Czech Academy of Science - C# Software developer

Participation on development of portal called RIDICS. My responsibility was automatic data conversion from linguists into the portal supported format.

2010 - Present

TREMI - technical support

Maintenance of servers, applications, working stations. Development of a small in house applications.

2008 - 2016

Dům dětí a mládeže - lecturer

Leadership of technical workshops for children. Mainly focused on computers and building electrical circuits.


2015 - 2019

Engineer of Cybernetics and Robotics

My master’s thesis is about developing an embedded position sensor with a high density of used items. The firmware is written in C, and high-level data visualization counterpart is written in Golang.

Faculty of Electrical engineering, CTU Prague

2012 - 2015

Bachelor of Cybernetics and Robotics

Faculty of Electrical engineering, CTU Prague

2007 - 2012

High school diploma in Automation and Communication technology

Střední průmyslová škola strojní a elektrotechnická a Vyšší odborná škola


Email: jan@trejbal.land
Tel: +420 608280353
Website: jan.trejbal.land
GitHub: trejjam
Facebook: trejjam
Twitter: @trejjam
Datová schránka: xrq568r
PGP key: key.asc

Business and Billing Information

Email: contact@jantrejbal.cz
IČ: 07992297
Datová schránka: 2g7yy2m
Bank account: 1370959002/5500
Bank: Raiffeisenbank a.s.
IBAN: CZ3955000000001370959002

Permanent residence

Jan Trejbal
Proseč pod Ještědem 52
463 43

Fluent with

  • .NET Core
  • Golang
  • PHP
  • Typescript
  • Python
  • SQL
  • Sass
  • Docker
  • Centos
  • Arch linux

Familiar with

  • Node.js
  • Design PCB
  • Embedded solutions

Interested in

  • Kotlin

Other Info


Czech: native
English: adequate
Spanish: self learning


I prefer work in an office in Prague
I can work remotely


Argentine tango; attended the first tango flashmob in Prague, part-time teacher.
Skiing, wakeboarding, kiting and yachting.