George Labs
Vienna, remote
bankingfrontendcore teamProducts teamInvestments team
Senior Full-Stack Engineer
Martin Kontsek
As a software Engineer with 20+ years of experience, I deliver fullstack solutions for multiple client projects across different industries. My primary focus is modern web application development. I design and build scalable, production-grade frontends with strong attention to architecture, performance, and maintainability.
Open to senior and staff full-time roles, with selective consulting engagements.
About
Product-minded engineer with 20+ years of experience across frontend and backend development. I focus on building reliable, maintainable systems and helping teams ship confidently.
Core stack and tools
GitHub Copilot for code development supportReact, TypeScript, Next.jsRust and Python for backend/services when requiredBash scripting and Git-centric workflowsPerplexity for technical research and rapid explorationFigma Make for fast UI iteration and prototyping
Selected Work
Collaborations from Sabercrown highlighted in resume.
Advocate Technologies
NYC, remote
insurancefrontendcore team
Intuito
Predictive data retrievalfullstack
Seasy
Fullstack team
Experience
Sabercrown — Full‑Stack Engineer (Contract)
February 2016 - Present
My primary focus is modern web application development. I transitioned legacy frontend projects toward a React + TypeScript + Next.js stack. I used Prisma and GraphQL for backend services when required, and I designed and implemented internal tools to optimize development workflows. I also drive UI/UX design and prototyping using Figma Make, and I leverage AI tools like GitHub Copilot and Perplexity for code development support and technical research.
IBM — Application Developer - Lead
April 2014 - January 2016
I started with mainly backend (Java) development, code reviews, and architectural suggestions, I worked my way to frontend code (Dojo/RequireJS) and scrum responsibilities. I reviewed potential candidates for our and other teams, facilitated procurement, and drove methodology changes.
Turiec Group — Head of Software Development
March 2012 - April 2014
I worked on various web applications. Technologies included Groovy, Grails, PHP, Yii framework, Bash scripting, HTML5, responsive CSS frameworks (Foundation, Bootstrap), jQuery, SMS payments, MySQL, MongoDB, SVN, and Git. Coordinated external teams of 2 to 5 people using agile methodologies.
First Mobile Affiliate s.r.o. — Software Developer
October 2009 - March 2012
Desktop/mobile web development and media processing. Responsible for web development on desktop and mobile devices. CentOS server administration duties and participation in Scrum.
mineus )( s.r.o — J2ME Developer
October 2006 - February 2009
Mobile web development and J2ME app development. Responsible for J2ME mobile phone application and backend (J2EE servlet, MySQL), application design, and testing.
Education
- • Master's degree from Charles University in Prague, Faculty of Mathematics and Physics (class of 2004 - 2010)
- • Gymnazium Jura Hronca — No degree, IT enhanced (class of 2000 - 2004)
Languages
- • English (Native or Bilingual)
- • Slovak (Native or Bilingual)
- • German (Elementary)