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YURII HAIDUK
Senior Full-Stack Engineer | PHP / Laravel | Vue.js / React.js

Zhytomyr, Ukraine
[open contact info](look above in the "contact info" section) · [open contact info](look above in the "contact info" section) · [open contact info](look above in the "contact info" section) · github.com/YuriHaiduk

SUMMARY

Senior Full-Stack Engineer with 6+ years of commercial experience developing SaaS platforms, web
services, and CRM systems with PHP/Laravel, Vue.js, and React.js. Build end-to-end features including
REST APIs, RAG pipelines, AI integrations, payment systems, asynchronous processing, and real-time
functionality. Design application architecture, modernize legacy systems, and improve performance and
reliability.

TECHNICAL SKILLS

Backend: PHP, Laravel, REST APIs, Microservices Architecture, OpenAPI/Swagger, MySQL,
PostgreSQL, Redis, RabbitMQ, WebSockets, SSE, Elasticsearch, ClickHouse, RAG, pgvector, PHPUnit

Frontend: JavaScript, TypeScript, Vue.js, Pinia, React.js, Zustand, Next.js, Preact, TanStack Query,
Inertia.js, HTML, CSS, Tailwind CSS, shadcn/ui, Vitest

DevOps, Cloud & Tools: Docker, Docker Compose, Linux, AWS (EC2, S3, SES, ECR, CloudFront),
GitLab CI/CD, GitHub Actions, Nginx, Traefik, Postman, Sentry, Claude Code

PROFESSIONAL EXPERIENCE

Full-Stack Engineer | AIBotLab
Mar 2026 - Present · aibotlab.ai

Developed a multi-tenant B2B SaaS platform for website owners to create AI chatbots trained on their
content and embed them into websites via a JavaScript widget.

● Designed a modular Laravel architecture with DDD, CQRS, and multi-tenancy.
● Built a RAG pipeline with document parsing, chunking, OpenAI embeddings, pgvector similarity
search, and HNSW indexing.
● Implemented a NestJS microservice for real-time AI streaming via SSE, separating OpenAI
streams from Laravel RAG and persistence.
● Developed a Next.js/React.js web application and embeddable Preact widget with Shadow DOM.
● Built an internal CRM for managing platform operations.
● Integrated Paddle billing, plan and usage limits.
● Implemented production monitoring, logging, and error tracking with Sentry.
● Covered backend, frontend, and streaming services with automated tests.
● Deployed the containerized platform on AWS using Docker and GitHub Actions CI/CD.

Tech stack: PHP 8.5, Laravel 13, Laravel Octane, FrankenPHP, Deptrac, PostgreSQL, pgvector, Redis,
Horizon, OpenAI API, RAG, Embeddings, Vector Search, NestJS, Next.js, React.js, TypeScript, Preact,
Zustand, TanStack Query, shadcn/ui, Paddle, Docker, AWS EC2, S3, ECR, CloudFront, GitHub Actions

Full-Stack Developer | Khaet Digital
Jun 2024 - Dec 2025 · credicom.de

Extended and modernized a Laravel-based CRM and services for a fintech lending platform.

● Developed backend and frontend functionality for complex lending and business workflows.
● Refactored legacy functionality, resolved production issues, and improved application reliability.
● Optimized data retrieval and aggregation for analytics, improving page performance.
● Built PDF processing, CSV import/export, and data parsing workflows using RabbitMQ queues.
● Integrated third-party APIs and maintained real-time and external data processing.

Tech stack: PHP, Laravel, MariaDB, RabbitMQ, JavaScript, Bootstrap, WebSockets, Docker

Full-Stack Engineer | AI Audio Transcription SaaS Platform
Jun 2023 - May 2024

Built a multi-tenant SaaS platform for AI-powered audio-to-text transcription using Laravel and Vue.js.

● Designed the application architecture and implemented multi-tenancy, authentication, payments,
and core transcription workflows.
● Built asynchronous audio processing with Laravel queues and Redis, integrating Microsoft Azure
Batch Transcription and Amazon S3.
● Implemented real-time transcription updates with Pusher/WebSockets and integrated Google
authentication, reCAPTCHA v3, LiqPay, and IP-based geolocation.
● Ensured automated test coverage and configured Docker environments and GitLab CI/CD.

Tech stack: PHP, Laravel 10, PostgreSQL, Redis, Queues, Vue 3, TypeScript, Inertia.js, Tailwind CSS,
Microsoft Azure Batch Transcription, Amazon S3, Pusher, WebSockets, Google OAuth, reCAPTCHA v3,
LiqPay, Docker, Docker Compose, GitLab CI/CD

Backend Developer | Giant Leap Lab
Aug 2022 - Feb 2023

Developed an admin panel for an Air Travel SaaS Platform providing subscription-based access to PDF
documents and REST APIs for an Educational Video SaaS Platform, including authentication,
subscription payments, and Stripe billing integration.

Tech stack: PHP, Laravel, MySQL, REST APIs, Stripe, JavaScript, Bootstrap, jQuery

Full-Stack Developer | Online Medical Consultation Platform
Jan 2020 - Aug 2022

Built a Laravel-based medical consultation platform end-to-end.

● Designed the architecture and developed the client application, admin panel, consultation
workflows, profiles, ratings, reviews, and core business logic.
● Implemented payment and financial workflows for consultations, balances, payouts, and
automated rewards using Interkassa.
● Built asynchronous notifications with Laravel queues, Redis, and AWS SES and maintained the
Ubuntu production environment.

Tech stack: PHP, Laravel, MySQL, JavaScript, Bootstrap, Redis, Queues, AWS SES, Interkassa

EDUCATION
Master’s Degree in Computer Science | Sumy State University | 2003 - 2008

LANGUAGES
English - Upper-Intermediate (B2) · Ukrainian - Native