Євгеній

Yevhenii Omelianovskyi
Senior Backend Engineer (PHP/Laravel) | Tech Lead | High-Load Systems
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@Omelianovskyi

Professional Experience
Senior PHP Developer 12/2024 – 06/2026
GG Network LLC Hallandale Beach,
High-Load Affiliate Platform (CPA / mVAS / DCB) FL, USA (remote)
• Developed and evolved a high-load affiliate platform for mobile traffic
monetization (Direct Carrier Billing)
• Designed scalable backend modules processing large volumes of
realtime traffic and financial events
• Applied CQRS architecture and built analytical pipelines using
ClickHouse
• Optimized critical database queries and performance-sensitive
business workflows
• Implemented asynchronous processing and event-driven background
jobs
• Contributed to backend architecture improvements focused on
scalability and reliability
• Worked within Kubernetes-based infrastructure supporting high
availability production systems
• Supported high-availability production environment handling millions
of daily events

Senior PHP Developer 08/2021 – 12/2024
Evergreen Kyiv, Ukraine
Outsource & Product Development (remote)
• Worked simultaneously on 6+ projects of varying complexity across
different technology stacks
• Designed system architecture and handled technical communication
with clients and stakeholders
• Developed API-driven services and delivered products from scratch to
production
• Designed application architectures and database schemas
• Performed task estimation, decomposition, and development planning
• Conducted code reviews and established unified development
standards
• Optimized application performance and complex SQL queries
• Integrated third-party services and payment providers
• Implemented asynchronous processing using queues and background
workers
• Participated in architectural decisions related to scalability and system
reliability

Lead PHP Developer 01/2019 – 08/2021
Knomary Belarus (remote)
Enterprise LMS Platform (Tech Lead)
 • Led backend development of an enterprise LMS platform for large
corporate clients
• Managed Scrum delivery lifecycle from requirement analysis to
production release
• Performed task decomposition, estimations, and technical planning
• Conducted code reviews and introduced development standards
across the team
• Implemented integrations with external services: Zoom, Slack,
Telegram, 1C, etc.
• Optimized complex database queries and led gradual legacy code
refactoring
• Improved system performance and stability under increasing load

PHP Developer 12/2017 – 12/2019
Meltid Solutions Ukraine, Melitopol
FinTech / Accounting Platform
• Developed an accounting platform with international payment
integrations (SEPA, SWIFT)
• Designed and implemented API integrations with banking and payment
providers
• Designed database structures and handled transactional data
processing
• Participated in backend architecture design and financial workflow
modeling
• Implemented asynchronous processing for payments, transaction
status updates, and external synchronizations

Prifile

Senior PHP Backend Engineer / Tech Lead
Senior Backend Engineer with 8+ years of commercial experience building high-load web
platforms, SaaS products, and API-driven systems. Strong focus on backend architecture,
performance optimization, distributed systems, and third-party integrations. Experienced in
delivering products from scratch to production and leading engineering efforts in distributed
teams. Experienced in owning backend architecture decisions and delivering systems end-to-end.
Key Responsibilities & Achievements
• Designed scalable backend architectures and database structures
• Built API-centric and event-driven services
• Optimized complex SQL queries and high-load workflows
• Implemented asynchronous processing using queues and messaging systems
•Technical leadership: task decomposition, estimations, code reviews, mentoring
• Integrated multiple external services (payments, Google, Shopify, Zoom, Slack, Telegram, Jira)
• Improved system performance, scalability, and reliability
• Worked on security and production stability improvements
Tech Stack
• Backend: PHP (Laravel, Yii2, Symfony), Node.js, Python (FastAPI)
• Databases: MySQL, PostgreSQL, ClickHouse, MongoDB, Redis
• Infrastructure: Docker, Kubernetes, AWS
• Architecture: CQRS, Queues, Event-driven systems
• Frontend: React, Vue