Євгеній

Yevhenii Omelianovskyi
Senior Backend Engineer (PHP/Laravel) | Tech Lead
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@Omelianovskyi (Telegram)
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Profile
Senior PHP Backend Engineer / Tech Lead
Senior Backend Engineer / Tech Lead with 8+ years of commercial experience building high-load
platforms, SaaS products, and API-driven systems. Proven track record delivering products from
scratch to production, leading distributed engineering teams of up to 6 people, and owning
backend architecture decisions across fintech, e-learning, and ad-tech domains. Strong focus on
system reliability, asynchronous processing, and third-party integrations.
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,
etc.)
• 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

Professional Experience
Senior PHP Developer 12/2024 – 07/2026
GG Network LLC Hallandale Beach,
High-Load Affiliate Platform (CPA / mVAS / DCB) FL, USA (remote)
Backend engineer on a high-load DCB affiliate platform (DCB HUB)
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processing 30M+ daily clicks/visits across 2000+ active offers, 130+
mobile carriers, and a network of 70000+ publishers
Designed scalable backend modules for real-time traffic processing
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and financial event handling
Applied CQRS architecture and built analytical pipelines using
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ClickHouse to support high-volume reporting
Optimized critical database queries and performance-sensitive
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workflows under sustained high load
Implemented asynchronous processing and event-driven background
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jobs for traffic and billing events
Operated within a Kubernetes-based infrastructure supporting high-
•

availability production systems

Senior PHP Developer 08/2021 – 12/2024
Evergreen Kyiv, Ukraine
Outsource & Product Development (remote)
Tech-led backend development across 6+ concurrent projects on
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varying stacks (Laravel, Symfony, Node.js, Shopify), in teams of 3–6
engineers
Delivered multiple products from zero to production within ~6-month
•

cycles
Designed system architecture, database schemas, and API-driven
•

services; owned technical communication with clients and
stakeholders
Introduced unified development standards and structured code
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review process, improving release quality across projects
Performed task estimation, decomposition, and sprint/delivery
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planning
Optimized application performance and complex SQL queries
•

Integrated third-party services and payment providers
•

Implemented asynchronous processing via queues and background
•

workers

Lead PHP Developer 01/2019 – 08/2021
Knomary Belarus (remote)
Enterprise LMS Platform (Tech Lead)
Led backend development of an enterprise LMS platform serving
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3,000–20,000 users, with a team of up to 6 engineers
Redesigned core application architecture, introducing queues and
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background job processing to improve system scalability
Set up observability stack (Grafana + Sentry) and CI/CD pipelines,
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improving deployment reliability and incident response time
Managed Scrum delivery lifecycle from requirement analysis to
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production release
Performed task decomposition, estimation, and technical planning
•

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
Led gradual legacy code refactoring and optimized complex database
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queries under increasing load

PHP Developer 12/2017 – 12/2018
Meltid Solutions Ukraine, Melitopol
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 for transactional financial data
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processing
Participated in backend architecture design and financial workflow
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modeling
Implemented asynchronous processing for payment events,
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transaction status updates, and external synchronizations