Krzysztof Tomiak
Warsaw
Summary
Diligent Senior Software Developer with strong background in leading technical projects and teams to success. Demonstrated ability to oversee complex software development initiatives, ensuring timely and efficient delivery. Proven skills in team leadership and problem-solving.
Overview
20
20
years of professional experience
Work History
Backend Tech Lead
Weco Travel
03.2025 - Current
- Technical ownership, team leadership, setting technical direction, mentoring developers, coordinating with stakeholders, translating business needs into technical solutions, and removing blockers.
Backend Senior Software Developer
NASK - National Research Institute
08.2023 - 02.2025
- Created two portals: one for business clients of the domain department, another for the Chancellery of the Prime Minister for civil service recruitment. Technologies: PHP, PostgreSQL, Symfony, ElasticSearch, Kafka, APIPlatform.
Senior Backend Software Developer
Hyd/Mobile5
01.2023 - 07.2023
- Developed REST APIs using PHP 8, Symfony 6, Node.js, Git.
Senior Backend Software Developer
Madiff/Ouicar
01.2022 - 01.2023
- Developed new services in a microservices architecture. Technologies: PHP 8, Symfony 5, Node.js, Git.
Senior Fullstack Software Developer
Freelancer (Intredo & Displate)
01.2021 - 01.2022
- Bug fixing and new functionality. Technologies: PHP 7, Symfony 5, MySQL, JS, CSS, JQuery.
Senior Fullstack Software Developer
Westwing Home & Living
01.2019 - 01.2021
- Created Chrome Extension for buying teams, built REST APIs, performed code reviews. Technologies: PHP 7, Symfony 5/4, JavaScript, Git, CSS, JQuery, Scrum.
Fullstack Software Developer
SII / Roche Holding AG
01.2017 - 12.2018
- SCRUM team member working on application for scientific research data visualization. Technologies: Oracle, JS, JQuery, Angular, REST API, PHP, Symfony, Git.
Fullstack Software Developer
BITNOISE
01.2014 - 01.2017
- Worked on apps for Helsinki City Hall, Australian public services, and Dutch cafeterias. Technologies: Node.js, JS, Angular, CSS3, Symfony 2.0, REST API, MySQL, PostgreSQL, SQLite, PHP, Git.
PHP Software Developer
PEARSON ELT
01.2012 - 01.2014
- Developed My English Lab for teachers and students of English. Technologies: Symfony 2/1.4, PHP, MySQL, Grunt, Git, Behat, UAT, SCRUM.
PHP Software Developer
ŠKODA AUTO Volkswagen Group
01.2011 - 01.2012
- Built Skoda car configurator 2012 used worldwide. Technologies: PHP, Zend, SOAP, SQLite, SVN, JQuery, AJAX.
PHP Developer
Freelancer
01.2011 - 12.2011
- Built websites for clients such as Hoxo, Flipomania, Enea, Osiedle Platanowe. Technologies: PHP, Zend, SOAP, SQLite, SVN, JQuery, AJAX.
Webmaster / Help Desk
NASK: Research and Academic Computer Network
01.2006 - 12.2011
- Created and developed applications such as nask.pl, saferinternet.pl, secure.edu.pl, sieciaki.pl, and intranet apps. Technologies: PHP, PostgreSQL, CSS, JS, JQuery.
Education
Bachelor of Engineering (BE) - Computer Science
School of Communication and Management
01.2006
Skills
- PHP
- Symfony
- PlatformAPI
- Kafka
- MySQL
- Oracle
- SQLite
- Postgres
- ElasticSearch
- Nodejs
- React
- JavaScript
- JQuery
- Angular
- HTML5
- CSS3
- Sass
- Less
- Bootstrap
- Git
- Grunt
- Gulp
- SVN
- Agile Software Development
- CI/CD
- Unit Testing
- REST
- SOAP
- API Development
Languages
English
Full Professional
Polish
Native or Bilingual
Timeline
Backend Tech Lead
Weco Travel
03.2025 - Current
Backend Senior Software Developer
NASK - National Research Institute
08.2023 - 02.2025
Senior Backend Software Developer
Hyd/Mobile5
01.2023 - 07.2023
Senior Backend Software Developer
Madiff/Ouicar
01.2022 - 01.2023
Senior Fullstack Software Developer
Freelancer (Intredo & Displate)
01.2021 - 01.2022
Senior Fullstack Software Developer
Westwing Home & Living
01.2019 - 01.2021
Fullstack Software Developer
SII / Roche Holding AG
01.2017 - 12.2018
Fullstack Software Developer
BITNOISE
01.2014 - 01.2017
PHP Software Developer
PEARSON ELT
01.2012 - 01.2014
PHP Software Developer
ŠKODA AUTO Volkswagen Group
01.2011 - 01.2012
PHP Developer
Freelancer
01.2011 - 12.2011
Webmaster / Help Desk
NASK: Research and Academic Computer Network
01.2006 - 12.2011
Bachelor of Engineering (BE) - Computer Science
School of Communication and Management