Projects &
engineering contributions.

AI call quality control for a multi-tenant CRM

An end-to-end system connecting telephony, AI processing and reporting inside a multi-tenant CRM platform.

• Designed asynchronous call processing, prompt orchestration, structured AI responses and reporting APIs.
• Implemented RabbitMQ jobs with idempotent processing and reliable error handling.
• Designed migrations and indexing strategies for isolated branch databases; integrated AI, telephony, messaging and accounting services.

• PHP 8
• Laravel
• Yii2
• Node.js
• MySQL
• Redis
• RabbitMQ
• JWT
• OpenAPI
• Docker
• Codeception

Removing bottlenecks in a training platform

Backend and frontend work on Skillsline, a training platform with partner-service integrations, with a focus on database and application performance.

• Replaced a loop issuing multiple database queries with one aggregating query: execution dropped from 12.41 to 2.451 seconds, and memory use fell by 1.5 GB.
• Reduced weekly average CPU load from 82.2% to 2.75% and identified missing search indexes.
• Reduced the average execution time of a critical operation from 23,937 ms to 48 ms and cut an API response from 912 KB to 2.1 KB.

Database operation

12.41 → 2.451 s

Weekly average CPU load

82.2% → 2.75%

API response size

912 → 2.1 KB

• Strapi
• Vue.js
• MySQL
• Node.js
• Laravel
• AWS
• REST API
• Linux

Technical leadership and production recovery

Took over underperforming and partially failed projects from other teams while acting as technical lead across several projects.

• Stabilized production systems with critical architectural and performance issues.
• Led technical work across multiple projects using Laravel, TypeScript/Node.js and Vue.
• Introduced AI-assisted feature development, refactoring and code-review workflows into daily engineering.

• PHP
• Laravel
• Node.js
• TypeScript
• Vue.js
• MySQL
• Redis
• Docker
• AWS
• CI/CD

Cross-platform delivery and full-stack development

Application development and delivery engineering for WholeReader, spanning backend services, frontend interfaces and automated builds.

• Developed backend functionality with Node.js and Express, and frontend functionality with Vue.js and Svelte.
• Investigated application performance, memory leaks and slow database queries.
• Designed CI/CD for automated Android, Linux, Windows and iOS builds, including automated testing.

• Node.js
• Express
• Vue.js
• Svelte
• MongoDB
• Redis
• OrientDB
• Docker
• TeamCity
• Bash

E-commerce development across multiple platforms

Senior PHP development on e-commerce projects, adapting existing commerce platforms to client requirements.

• Developed and optimized online stores on WordPress, Shopify and Magento.
• Integrated web technologies to improve shopping flows and user experience.
• Worked across a PHP/MySQL stack that also included Laravel and Shopware.

• PHP
• MySQL
• Laravel
• WordPress
• Shopify
• Magento
• Shopware

Weather-data aggregation and search optimization

Led a three-person team developing a system for collecting, processing and displaying meteorological data.

• Led development and design of the weather-data aggregation project.
• Worked on efficient collection, processing and presentation of meteorological information.
• Reduced the search index from gigabytes to several megabytes.

• PHP
• Yii
• Laravel
• MySQL
• JavaScript