Александр

Alexandr Vorontsov
Senior Full-Stack PHP Developer · Backend-Focused
Email: [відкрити контакти](див. вище в блоці «контактна інформація») | Telegram: @AlexandrVorontsovv | LinkedIn: Alexandr Vorontsov

Professional Summary
Senior Full-Stack Developer with a strong backend focus, designing and evolving scalable REST APIs and high-load
systems on PHP / Laravel.
8+ years of commercial experience building business-critical web platforms with PHP 8, Laravel, Symfony, Yii2,
MySQL / PostgreSQL / MongoDBL, Redis, and modern frontends on Vue.js / React / TypeScript.
Focused on clean architecture, performance, and reliable integrations — dual-database synchronization, event-driven
background pipelines, payment providers, and third-party APIs. Comfortable owning a feature end-to-end, from API
and data model to the frontend that consumes it.
AI-augmented engineering: I actively use Claude / Claude Code and custom AI agents I build myself to accelerate and
improve delivery — automating code review, refactoring, test generation, and documentation, and orchestrating
multi-step tasks to ship faster with higher quality.
Selected impact:
•Reduced report query response time by ~70% through indexing and query tuning on a B2B platform.
•Optimized high-load client data loading — eliminated N+1 queries, added schema-reflection caching, and sped up
hierarchical visibility resolution (BFS over related-entity graphs).
•Integrated multiple payment providers (Stripe, Telegram Stars, crypto, card acquiring) with webhook signature
verification (RSA/SHA-512) and idempotent transaction handling.
•Built custom AI agents and prompt workflows that measurably speed up development, refactoring, and
documentation across projects.

Experience
ScrumLaunch Remote
PHP / Full-Stack DeveloperApr 2025 – Present
•Develop a high-load travel management platform for advisors and back-office staff, built on a dual-database
architecture with real-time synchronization between the API and CRM systems.
•Build REST API services and integrations: full-text search (OpenSearch), cloud file storage (AWS S3 with presigned
URLs), and external calendar synchronization (Outlook / ICS).
•Implement and maintain background and scheduled job pipelines — data synchronization, contact/loyalty mirroring,
and calendar aggregation — with optimized Redis queue handling for high-load environments.
•Optimize performance-critical data loading: eliminating N+1 queries, caching database schema reflection, and
speeding up hierarchical client visibility resolution.
•Deliver end-to-end features on the frontend (Next.js / React 19 / TypeScript): multi-step forms, offline-resilient
uploads, and data-heavy tables.
•Use Claude Code and self-built AI agents to accelerate delivery, code review, and documentation.
MLPco Remote
PHP DeveloperNov 2023 – Jan 2025
•Built and maintained REST APIs for a B2B technical-control platform (Laravel, MySQL, Redis).
•Designed a microservices architecture with Laravel Lumen and RabbitMQ for telemetry and notifications.
•Integrated Viber, Telegram, Messenger via webhooks and queues.
•Optimized report queries, reducing response time by 70% through indexing and query tuning.
•Implemented monitoring and alerting with Prometheus and Grafana.
Vilmate Remote
PHP / Laravel DeveloperJan 2021 – Oct 2023
•Led migration of a legacy Shopify–Amazon app to Laravel 9; added Redis caching and Amazon SQS queues.

•Architected a telemetry subsystem: data collection, normalization, aggregation, and visualization (PostgreSQL,
RabbitMQ, Chart.js).
•Developed a subscription-based news platform (Symfony) with mobile-carrier integration and push notifications.
•Implemented MangoPay and InPost payment modules, ensuring PCI DSS compliance.
•Automated CI/CD pipelines (TeamCity), deployed via Docker and Ansible.
IteriaSoft office
Laravel DeveloperMar 2018 – Dec 2020
•Developed CRM / ERP modules: reporting, RBAC, 1C and external API integrations.
•Implemented OAuth2 (Passport) and JWT authentication.
•Improved performance with Redis caching and lazy loading.
•Established coding standards (PSR-12), conducted code reviews, and mentored junior developers.

Selected Projects
Luxury Travel & Private Aviation Platform — Laravel, MySQL, Redis, OpenSearch, AWS S3 · Next.js, React, TypeScript
Full-stack platform on a dual-database architecture with real-time API–CRM sync, background job pipelines, and a
statically-exported Next.js SPA with offline-resilient uploads.
Subscription & Payment Platform — Laravel, Vue.js, MySQL, Redis, Docker
Multi-service backend with Sanctum/Firebase auth, multiple payment providers with signature verification and
idempotent transactions, automated subscription lifecycle, and Telegram bots.
Automated Lending & Loan Management Platform — PHP 8.4, Yii2, Vue 3, TypeScript, MySQL, Redis, Docker
Customer, retailer, and admin portals; automated decision engine and full loan lifecycle; Direct Debit / BACS and
credit-bureau (CreditSafe) integrations; multi-tenant with strict data isolation.
Industrial Telemetry & Monitoring System — Laravel, PostgreSQL, RabbitMQ, Vue.js, Docker
Collected, decoded, normalized, and aggregated sensor data; REST API + Vue dashboard for filtering and plotting;
scaled horizontally with DB sharding and message queues.

Core Skills
Languages & Frameworks: PHP 8, Laravel, Symfony, Yii2, Livewire; JavaScript / TypeScript, Vue.js, React, Node.js; SQL,
Bash
Architecture & Patterns: RESTful API design, Microservices, Modular Monolith, DDD, CQRS, Event Sourcing, SOLID,
Clean Architecture, Service Layer, Repository, Dependency Injection
Databases & Data: MySQL, PostgreSQL, MongoDB, Redis, Query Optimization, Indexing, Schema Migrations, Full-text
Search
Messaging & Async: RabbitMQ, Redis Queues, Amazon SQS, Laravel Horizon, Scheduled & Delayed Jobs, Event-Driven
Processing
APIs & Integrations: REST, GraphQL, OAuth2, OpenAPI / Swagger; Payment providers (Stripe, Telegram, Crypto);
Facebook / Messenger, Viber, Google, Firebase, Azure, Amazon Seller Partner, Shopify
Cloud & DevOps: Docker, Docker Compose, Kubernetes (basic), CI/CD (GitHub Actions), Nginx, Linux (Ubuntu),
Supervisor, Cron
Search & Observability: OpenSearch / Elasticsearch, ELK, Sentry, Prometheus + Grafana
AI-Assisted Development: Claude / Claude Code, custom AI agents, Cursor, GitHub Copilot, OpenAI API integration,
prompt engineering, AI-assisted refactoring & documentation
Testing & Quality: PHPUnit, Codeception, Postman; Unit, Integration & Feature testing
Languages: Ukrainian (Native), English (Advanced), Russian (Native)

Education
Kharkiv National University of Radio Electronics (KhNURE) 2019 – 2023
Bachelor's Degree, Faculty of Computer Science — Systems Engineering

Kharkiv Computer-Technology College of NTU "KhPI" 2015 – 2019
Junior Specialist, Faculty of Software Engineering and Development