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Dawid Krawczyk

@dawidkrawczyk

Senior Full-Stack Engineer at Booking.com building LLM and RAG workflows for information discovery and internal automation.

Poland

Message

At Booking.com, I design and deliver full-stack applications and LLM-powered workflows for information discovery, summarization, and internal automation.

I build RAG pipelines that process documents, generate embeddings, retrieve relevant context, and validate structured responses. I also develop backend services and REST and GraphQL APIs.

At Spotify, I built and operated customer-facing products and asynchronous workflows, and improved performance across frontend and backend systems.

Earlier, at UiPath, I developed enterprise applications for automation and business-process workflows. At SAP, I worked on Java-based enterprise applications, backend services, and database integrations.

Experience

Work history, roles, and key accomplishments

Current

Senior Full-Stack Engineer & AI Application Engineer

Current

Booking.com

Mar 2021 - Present (5 years 7 months)

Design and deliver high-traffic full-stack applications using TypeScript, React, Next.js, Node.js, Java, Spring Boot, PostgreSQL, AWS, and Kubernetes. Develop LLM-powered workflows and RAG pipelines for information discovery and automation.

Senior Software Engineer

Spotify

Jul 2017 - Feb 2021 (3 years 7 months)

Built and operated high-traffic customer-facing products using React, TypeScript, Java, Spring Boot, Node.js, PostgreSQL, Redis, and Elasticsearch. Improved performance through optimization and expanded automated testing coverage.

React TypeScript Java Spring Boot NodeJS PostgreSQL Redis Elasticsearch REST APIs Jest Cypress Junit Performance Optimization Event Driven Architecture

Full-Stack Software Engineer

UiPath

Aug 2014 - Jun 2017 (2 years 10 months)

Developed enterprise web applications using JavaScript, React, Java, Spring, REST APIs, and SQL for automation and business-process workflows. Improved application responsiveness through SQL optimization and built reusable frontend components.

JavaScript React Java Spring Framework REST APIs SQL Database Optimization Testing Automation Agile

Software Engineer

SAP

Jul 2012 - Jul 2014 (2 years)

Developed Java-based enterprise applications, backend services, frontend functionality, and database integrations for business workflows. Improved stability through debugging, automated testing, and code review.

Java SQL Backend Development Frontend Development Debugging Testing Automation Code Review