Евгений

Yevhenii Piatkin
Backend Engineer
Kyiv, Ukraine (Remote) • [відкрити контакти](див. вище в блоці «контактна інформація») • [відкрити контакти](див. вище в блоці «контактна інформація») • Telegram: @Neolodor • [відкрити контакти](див. вище в блоці «контактна інформація»)

SUMMARY
Backend Engineer with 7+ years of experience developing backend systems for billing, payments, subscriptions, e-commerce
and internal platforms. Experienced in designing technical solutions, implementing complex business logic, building REST
APIs and improving existing systems through testing, refactoring and close collaboration with cross-functional teams. Strong
commercial experience with modern PHP technologies and AI-assisted development.

SKILLS
Languages: PHP, Go, SQL
Frameworks: Laravel 6-10, Symfony 4/6, Yii2
Databases: PostgreSQL, MySQL
Infrastructure: Docker, Redis, RabbitMQ, Temporal, GitHub Actions, GitLab CI, Linux
Practices: REST APIs, Testing, Refactoring, Microservices, DDD, CQRS, AI-assisted Development
AI Tools: ChatGPT, Claude
English: B2

PROFESSIONAL EXPERIENCE

Backend Engineer — MacPaw
Feb 2026 - May 2026 · Billing Department · Kyiv / Remote
Stack: PHP 8.2-8.4, Go, PostgreSQL, Laravel 10, Symfony 6, RabbitMQ, Temporal, PHPUnit, Behat
• Implemented backend functionality for billing and subscription workflows, including new API endpoints and
improvements to internal services.
• Fixed production bugs in legacy billing components with care taken to preserve correctness of existing business logic.
• Identified and addressed gaps in automated handling of subscription lifecycle edge cases within a microservice
environment.
• Worked across PHP and Go services, collaborating on backend architecture and engineering improvements.
• Applied AI-assisted analysis and code generation to navigate a new codebase, supporting onboarding and
implementation.

Backend Engineer — SignNow (airSlate Inc.)
Apr 2022 - Oct 2025 · Payment Department · Kyiv
Promoted from Middle Backend Engineer to Senior Backend Engineer (January 2023)
Stack: PHP 8.x, Laravel 9, PostgreSQL, Redis, Docker, GitHub Actions, PHPUnit
• Designed and implemented backend functionality supporting payment and subscription workflows, participating in
solution design and architecture discussions for new features.
• Implemented complex billing business logic for subscription lifecycle and payment processing.
• Refactored fragile legacy billing components, improving reliability across the subscription lifecycle.
• Reduced manual intervention in subscription lifecycle edge cases through improved automated handling, refined
iteratively as new payment scenarios emerged.
• Developed REST APIs and integrations for internal services and third-party systems; participated in A/B testing
implementation and rollout.
• Expanded automated test coverage and contributed to continuous improvement of engineering practices, collaborating
with Product Managers, QA Engineers and developers throughout the delivery lifecycle.
• Integrated AI-assisted workflows into daily development — from code review and test generation to exploring
architectural approaches for complex features.

Backend Developer — Rozetka
Jul 2021 - Apr 2022 · Marketplace · Kyiv

Stack: PHP 7.4, Laravel 8, Yii2, PostgreSQL, Redis, RabbitMQ, Docker
• Maintained and extended backend functionality for marketplace services; developed internal APIs and integrated third-
party services.
• Improved maintainability and stability of legacy components through code reviews and technical documentation.

Backend Developer — Budynok Ihrashok
Jul 2020 - Jul 2021 · Backoffice · Kyiv
Stack: PHP 7.3, Yii2, MySQL, Elasticsearch
• Developed and maintained internal back-office functionality, integrating internal and external APIs supporting
operational workflows.
• Improved monitoring, logging and reliability of existing services.

Junior Web Developer — Cityhost.ua
May 2019 - Jul 2020 · Core Department · Kyiv
Stack: PHP 5.3-7.3, Symfony 4, Yii2, MySQL
• Developed internal CRM modules and hosting automation tools, integrating external services and APIs.
• Participated in refactoring and performance optimization of existing systems.

EDUCATION
National University of Food Technologies (Kyiv, Ukraine) — Bachelor's Degree, Specialist Degree

ADDITIONAL INFORMATION
Started as Technical Support Engineer at Cityhost.ua (Feb 2017 - May 2019) before transitioning into development.
Open to backend opportunities across different business domains. Prior experience includes billing, payments,
subscriptions, marketplaces, e-commerce and internal systems.