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Michal L.
Bio
Motivated technology professional with strong self-learning skills, high responsibility, and proven ability to work effectively in a team environment.
Skills
.NET
React
TypeScript
PostgreSQL
Kafka
Docker
Spring Boot
MySQL
JWT
Infinite Scroll
Bootcamp Project
Query - A multi-tenant, dynamic management system for entities, events, workflows, and real-time operations.
Mentored by: Kaltura
Backend Bootcamp 2025 (Backend)
Responsibilities:
Built the Event Trends read-model, including flattening and aggregating millions of events into a fast analytical structure used for dashboards and search.
I designed and implemented a hybrid incremental aggregation, which combines real-time updates with once-daily recalculation to ensure high accuracy and performance.
Developed and optimized SQL queries for daily and process-level trend analytics, significantly improving query performance.
Created REST and GraphQL endpoints in the Query-API to expose analytical data efficiently and eliminate over-fetching and under-fetching.
Integrated the read-model into the central Gateway service, ensuring consistent API responses across the entire system.
Implemented process-name enrichment inside the projection layer to support advanced filtering on processes.
Built a dynamic dashboard to display event and process trend data.
Led testing and validation for the entire aggregation pipeline, ensuring correct calculations for opened, closed, and cumulative events.
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Additional Projects
• Price Comparison System
Built a system that finds the cheapest shopping option across multiple supermarkets using .NET Core and Angular.
• Digital Library & Shared Book Platform
Built a library system with Spring Boot, MySQL, React, and Redux, including search, detail pages, and a collaborative story-writing module.
English Level
Working Proficiency