Євгеній

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

Professional Experience
GG Network LLC 05/2024 – 02/2026
Senior PHP Developer 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 real-
time 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

Evergreen 08/2021 – 04/2024
Senior PHP Developer Kyiv, Ukraine
Outsource & Product Development (remote)
Worked simultaneously on 6+ projects of varying complexity across
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different technology stacks
Designed system architecture and handled technical communication
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with clients and stakeholders
Developed API-driven services and delivered products from scratch to
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production
Designed application architectures and database schemas
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Performed task estimation, decomposition, and development
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planning
Conducted code reviews and established unified development
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standards
Optimized application performance and complex SQL queries
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Integrated third-party services and payment providers
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Implemented asynchronous processing using queues and background
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workers
Participated in architectural decisions related to scalability and
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system reliability

Knomary 01/2019 – 08/2021
Lead PHP Developer Belarus (remote)
Enterprise LMS Platform (Tech Lead)
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 Led backend development of an enterprise LMS platform for large
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corporate clients
Managed Scrum delivery lifecycle from requirement analysis to
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production release
Performed task decomposition, estimations, and technical planning
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Conducted code reviews and introduced development standards
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across the team
Implemented integrations with external services: Zoom, Slack,
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Telegram, 1C, etc.
Optimized complex database queries and led gradual legacy code
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refactoring
Improved system performance and stability under increasing load
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Meltid Solutions 12/2017 – 12/2019
PHP Developer Melitopol, Ukraine
FinTech / Accounting Platform
Developed an accounting platform with international payment
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integrations (SEPA, SWIFT)
Designed and implemented API integrations with banking and
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payment providers
Designed database structures and handled transactional data
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processing
Participated in backend architecture design and financial workflow
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modeling
Implemented asynchronous processing for payments, transaction
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status updates, and external synchronizations

Profile

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
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Technical leadership: task decomposition, estimations, code reviews, mentoring
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Integrated multiple external services (payments, Google, Shopify, Zoom, Slack, Telegram, Jira)
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Improved system performance, scalability, and reliability
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Worked on security and production stability improvements
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Tech Stack
Backend: PHP (Laravel, Yii2), Node.js, Python (FastAPI)
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Databases: MySQL, PostgreSQL, ClickHouse, MongoDB, Redis
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Infrastructure: Docker, Kubernetes, AWS
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Architecture: CQRS, Queues, Event-driven systems
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Frontend: React, Vue
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