Vasiliy Krivoplyas

Vasiliy Krivoplyas

Senior PHP Developer & Software Architect

PHP developer with 19+ years of commercial experience. Specialized in developing high-load web applications, SaaS platforms, CRM systems, and analytics platforms. Experienced in architecture design, technical leadership, and managing development teams. Contributed to building and evolving commercial products across the full lifecycle โ€” from design through maintenance and scaling.

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English: C1 Advanced.

Core Expertise

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PHP Development

Expert-level PHP development with modern frameworks and best practices. Building robust, maintainable applications with clean architecture and SOLID principles.

Yii2 Laravel OOP SOLID DRY KISS
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Database Management

Deep knowledge of SQL and NoSQL databases. Expert in query optimization, database design, and data modeling. Experience with high-load systems and distributed databases.

MySQL PostgreSQL ClickHouse Redis Elasticsearch
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Linux Administration

Extensive experience with Linux system administration, server configuration, and infrastructure management. Proficient in automation, security hardening, and performance optimization.

Debian Docker K8S Nginx

Professional Experience

October 2025 โ€” Present ยท 9 months

Senior PHP Developer

TechCon LLC

Developing and maintaining software for technical inspection of buildings and structures, built on Yii2 and PostgreSQL.

  • Developed new functional modules, optimized performance, and refactored existing code.
  • Led a team of 4 PHP developers: task allocation, deadline tracking, code review, mentoring, and professional development.
  • Contributed to platform modernization: migration from PHP 7.3 to PHP 8.1, introduction of job queues for asynchronous processing, and adoption of Redis for caching and temporary data storage.
  • Introduced automated testing with Codeception, improving code quality and reducing risks during system evolution.
August 2024 โ€” September 2025 ยท 1 year 2 months

PHP Developer

Center for Information Technologies in Education

Contributed to the development and expansion of the 1C:University PROF system. Designed backend architecture and implemented server-side logic on Yii2. Built data exchange mechanisms between the PHP application and 1C, ensuring synchronization of directories, documents, and business processes. Customized the system to meet the requirements of various educational institutions.

January 2019 โ€” December 2019 ยท October 2021 โ€” August 2024 ยท 3 years 11 months

Lead PHP Developer

UTMSTAT

Contributed to the development of the high-load end-to-end analytics platform UTMSTAT on Yii2. Built and maintained core system modules, including call tracking, a built-in CRM, and marketing analytics tools. Participated in architecture design, performance optimization, and platform feature development.

Developed projects on the Yii2 framework, contributing to architecture design, business logic implementation, and integration with external services:

  • UTMSTAT โ€” call tracking and end-to-end analytics service
  • ApiMonster โ€” no-code platform for business process automation (marketing, sales, analytics)
  • LMSly โ€” platform for building online school websites and course catalogs with GetCourse integration
  • OSINTMonster โ€” service for collecting and analyzing open-source intelligence (OSINT) to find clients and competitors
  • CPAMonster โ€” solution for rapid deployment of affiliate dashboards (CPA) and partner program management
  • MPMonster โ€” analytics and automation service for marketplaces (Wildberries, Ozon)
January 2020 โ€” September 2021 ยท 1 year 9 months

Software Architect

CloudTeam

Designed and developed CRM system modules for VseInstrumenti.ru on Yii2. Automated deployment and infrastructure operations using Ansible, Consul, and Kubernetes. Provisioned and maintained development and production environments, ensured service stability, and performed monitoring, diagnostics, and availability troubleshooting. Contributed to infrastructure optimization and improved system fault tolerance.

January 2018 โ€” December 2018 ยท 1 year

Lead PHP Developer

bazar.media

Built the CPA/CPC network bazar.media from scratch on Yii2 โ€” a platform where advertisers pay only for target actions (leads, sales) under the Cost Per Action model. Delivered the full cycle: architecture and database design, core modules for offer management, tracking, and partner system integrations.

April 2015 โ€” January 2018 ยท 2 years 10 months

PHP Developer

Freelance

Developed commercial web projects on Yii2 and Laravel for Russian and international clients. Covered the full development cycle: requirements gathering, architecture design, implementation, and ongoing support. Delivered projects of varying complexity, including a domain drop-catching platform with monitoring, trading, and process automation, as well as a website builder with a visual editor and extensible architecture.

December 2013 โ€” March 2015 ยท 1 year 4 months

Technical Director

Cyber Soft LLC

Developed a high-load dynamic call tracking and advertising campaign optimization system for Yandex.Direct and Google Ads. Designed the project architecture and infrastructure from scratch, including the server layer, databases, and deployment processes. Led the development team, managed task planning, conducted code reviews, and drove technical decisions. Primary development stack: Lumen framework.

April 2012 โ€” September 2013 ยท 1 year 6 months

Lead PHP Developer

AFT design Studio

Developed and maintained web projects on the 1C-Bitrix platform and contributed to internal services based on the company's proprietary solutions. Led the development team, participated in work planning, task allocation, and quality control.

Key project โ€” LGMaster training portal for LG Electronics retail network employees and sales staff: an LMS platform with a library of video and audio courses, testing, and progress tracking.

November 2006 โ€” April 2012 ยท 5 years 6 months

Early Career

Qseo ยท ERA Advertising Agency ยท Business Development Group ยท Travel Media ยท Level UP Studio ยท LAD ยท Freelance

Progressed from web developer to Lead PHP Developer and Technical Director (CTO) across agency, ISP, travel, and product companies. Built high-load platforms from scratch on proprietary PHP frameworks, including travelnetplanet.com (25,000+ listings). Developed custom Joomla! modules, WordPress sites, and backend systems with PostgreSQL. Handled Linux server administration, client negotiations, technical specifications, hiring, and project estimation.

At Business Development Group, built high-load internet services for regional ISP VolgaTelecom:

  • J-Net โ€” video hosting for local network users with uploads, comments, and ratings; multi-threaded video encoding pipeline with FFmpeg
  • J-Radio โ€” internet broadcasting platform with music stream analytics
  • J-Zone โ€” gaming community with game server statistics collection and display
  • rifmator.ru โ€” automated poetry generator using proprietary poetic templates and content from professional poets
  • voicecards.ru โ€” voice greeting service with audio catalog, ordering, and delivery

Managed the development department (4 programmers, 1 frontend developer). Also delivered CRM and support systems and an international review & rating platform.

Featured Projects

PDOdb

Framework-agnostic PHP database library with unified API for MySQL, MariaDB, PostgreSQL, SQLite, MSSQL, and Oracle. Query Builder, caching, sharding, window functions, CTEs, JSON, migrations, ActiveRecord, CLI tools, AI-powered analysis. Zero external dependencies.

PHP 8.4+ PDO DBAL Query Builder

Struct

Type-safe data structure library for PHP 8.1+ with attribute-based validation. Define immutable data models with automatic type checking, JSON serialization, array conversion, field aliases, custom validators, and PSR-11 container integration. Perfect for DTOs, API validation, and data integrity in microservices.

PHP 8.1+ Attributes Validation Template-driven

Chain

Fluent method chaining utility for PHP 8.0+ enabling elegant context switching and functional pipelines. Call methods across different objects, transform data with map/pipe, conditionally execute logic, handle errors with rescue/retry, and integrate with PSR-11 containers for seamless dependency resolution.

PHP 8.0+ Fluent API Method-chaining Object wrapper

Technology Stack

PHP Yii2 Laravel Linux MySQL PostgreSQL ClickHouse Redis RabbitMQ Docker K8S Elasticsearch

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