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Hi, I'm Petr Kolonicz, a web developer with a passion for building scalable apps and designing information systems. I thrive in full-stack development, cloud services, and serverless architectures on AWS. I'm experienced with hosting, internet access projects, and leading small teams. I enjoy contributing to open-source, hobby projects, and turning ideas into polished interfaces and reliable cloud solutions. I speak English (C1) and Czech (native), and I value clear communication and practical solutions.…Hi, I'm Petr Kolonicz, a web developer with a passion for building scalable apps and designing information systems. I thrive in full-stack development, cloud services, and serverless architectures on AWS. I'm experienced with hosting, internet access projects, and leading small teams. I enjoy contributing to open-source, hobby projects, and turning ideas into polished interfaces and reliable cloud solutions. I speak English (C1) and Czech (native), and I value clear communication and practical solutions.

Petr Kolonicz

Web Developer, Full Stack Developer, Brand Designer, +5

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Hi, I'm Petr Kolonicz, a web developer with a passion for building scalable apps and designing information systems. I thrive in full-stack development, cloud services, and serverless architectures on AWS. I'm experienced with hosting, internet access projects, and leading small teams. I enjoy contributing to open-source, hobby projects, and turning ideas into polished interfaces and reliable cloud solutions. I speak English (C1) and Czech (native), and I value clear communication and practical solutions.…Hi, I'm Petr Kolonicz, a web developer with a passion for building scalable apps and designing information systems. I thrive in full-stack development, cloud services, and serverless architectures on AWS. I'm experienced with hosting, internet access projects, and leading small teams. I enjoy contributing to open-source, hobby projects, and turning ideas into polished interfaces and reliable cloud solutions. I speak English (C1) and Czech (native), and I value clear communication and practical solutions.

Available to hire

Hi, I’m Petr Kolonicz, a web developer with a passion for building scalable apps and designing information systems. I thrive in full-stack development, cloud services, and serverless architectures on AWS.

I’m experienced with hosting, internet access projects, and leading small teams. I enjoy contributing to open-source, hobby projects, and turning ideas into polished interfaces and reliable cloud solutions. I speak English (C1) and Czech (native), and I value clear communication and practical solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Czech

Fluent

Work Experience

Software Engineer (Contractor) at London-based company

September 1, 2025 - November 1, 2025

Developing a custom multi-vendor online marketplace platform.

Contractor at MATERIAL INDEX LTD

January 1, 2020 - September 1, 2021

Managing custom servers and CCTV infrastructure, payment systems and more. Creating simple web presentations.

Intern at JaSi PCS

May 1, 2022 - May 1, 2025

Project-based contractor. Full stack web development, brand identity, graphical design, SEO and more.

Lead Developer, Solutions Architect, Designer and Cloud Engineer

January 1, 2023 - Present

Lead developer, solutions architect, designer and cloud engineer at an e-commerce analytical software startup.

CTO at Wecker

January 1, 2023 - Present

CTO at Wecker (a software startup).

Software Engineer at London-based company (client)

September 1, 2025 - November 1, 2025

Contracted software engineer developing a custom multi-vendor online marketplace platform; involved in full-stack development for a London-based client.

Consultant Developer at Material Index Ltd

January 1, 2020 - September 1, 2021

Managing custom servers and CCTV infrastructure, payment systems and more. Creating simple web presentations.

Intern at JaSi PC

September 1, 2022 - May 1, 2025

Project-based work focusing on full-stack web development, brand identity, graphical design, SEO and more.

Lead Developer, Solutions Architect, Designer and Cloud Engineer at Freelancer / e-commerce analytical software startup

January 1, 2023 - Present

Freelancer/Entrepreneur; led development, solution architecture, design and cloud engineering for an e-commerce analytics startup.

Consultant Developer

September 1, 2025 - December 1, 2025

Consultant developer for a company providing a custom multi-vendor marketplace platform.