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Krzysztof Wachnicki-Węgrzyn

@krzysztofwachnicki-w

Senior Backend Developer at Cookie Information who built an internal support system for a consent platform processing millions of consents daily.

Poland

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At Cookie Information (Piwik PRO), I worked on a GDPR cookie consent platform used by 2,000+ clients and collecting several million consents daily. I built an internal support system with a dedicated API, custom AppSmith dashboards, and workflow automations.

At Flip.shop, I built a tool that generated OG images from Figma designs, reducing generation time from about five minutes to about ten seconds per image. I’ve also developed consent-management microservices at Clearcode S.A. and built and maintained a voucher ordering system at Voicefinder S.A.

Experience

Work history, roles, and key accomplishments

Senior Backend Developer

Cookie Information (Piwik PRO)

Apr 2025 - Oct 2026 (1 year 6 months)

Worked on a GDPR cookie consent management platform used by 2,000+ clients, collecting several million consents daily across about 50,000 domains. Built an internal support system with a dedicated API, custom AppSmith dashboards, and workflow automations.

PHP 8+Symfony API Platforms NodeJS PostgreSQL Elasticsearch RabbitMQ Docker Kubernetes Appsmith

Backend Developer

Flip.shop

Apr 2024 - Mar 2025 (11 months)

Built a tool generating OG images from Figma designs, cutting generation time from about 5 minutes to about 10 seconds per image. Led a team of three backend developers and maintained microservices.

NodeJS TypeScript NestJS PostgreSQL MongoDB Elasticsearch Redis AWS Kubernetes

Backend Developer

Clearcode S.A.

Jun 2022 - Mar 2024 (1 year 9 months)

Developed microservices for the Consent Management Platform and built the foundation for dynamic product pricing, enabling later price changes without critical code changes.

PHP 8 Symfony API Platforms NodeJS NestJS PostgreSQL Elasticsearch RabbitMQ Docker Kubernetes

Full Stack Developer

Voicefinder S.A.

Jan 2018 - May 2022 (4 years 4 months)

Built and maintained a voucher ordering system for EU-funded business training, used by about 300 entrepreneurs in Lesser Poland. Rewrote complex legacy modules and built a registration form with autosave.

PHP Zend Framework 2 JavaScript MySQL SCSS