Олександр

Oleksandr Yatsenko
Lviv, Ukraine, remote
[open contact info](look above in the "contact info" section)
[open contact info](look above in the "contact info" section)
Backend PHP Developer Telegram @akystuk
Laravel, PHP 8, PostgreSQL / MySQL [open contact info](look above in the "contact info" section)

Backend PHP developer with 8+ years of commercial experience building SaaS
platforms, CRMs, e-commerce systems and third-party integrations. Currently at
VARTEQ working on Prosvita.net, a cloud school platform used across Ukraine, and
other products. Strong in PHP 8, Laravel, REST and JSON-RPC APIs,
PostgreSQL/MySQL, background workers, payment integrations, Docker and GitLab
CI/CD. Writes tests, works with static analysis and does code review.

Technical skills
Languages PHP 8.x, SQL, JavaScript; basic Python and C#
Frameworks Laravel (6–13), Festi Framework, Symfony 7 + Doctrine, Yii2, Filament, Livewire; WordPress,
Drupal
Databases PostgreSQL, MySQL, MS SQL Server, Redis, memcached
APIs REST, JSON-RPC, GraphQL, webhooks, WebSockets, OAuth 2.0, JWT, Sanctum, Swagger /
OpenAPI
Async Laravel Queues (Redis, database), Horizon, Supervisor, cron jobs
Integrations Stripe, LiqPay, WayForPay, in-app purchases, AWS, Google APIs, Firebase, Shopify, Zoho CRM,
SendGrid, Slack
DevOps Docker, Docker Compose, GitLab CI/CD, GitHub Actions, Nginx, Linux
Monitoring Sentry, Graylog, Laravel Telescope
Quality PHPUnit, Pest, Playwright, Selenium, PHPStan / Larastan, Phan, Rector, PHPCS / Pint,
SonarQube, code review
Frontend HTML5, CSS3 / SASS, Vue 3, React (basic), jQuery, Bootstrap, Blade, Twig
Tools Git, PhpStorm, VS Code, Jira, Postman
AI tools Claude Code, OpenAI Codex for AI-assisted development

Education and languages
Degree Master’s in Computer Engineering, Kharkiv National University of Radio Electronics (NURE),
2011 – 2017
Languages Ukrainian, native; English, intermediate (B1); Russian, fluent

Experience
Apr 2023 – Present PHP Developer (Full-stack)
Remote VARTEQ Inc.
Products on the in-house Festi Framework: Prosvita.net / Lummio (cloud LMS and school
management SaaS, 180+ modules), AtmaSatsang (meditation platform, REST API for
mobile apps), Shipper (e-commerce fulfillment), Excerpt (recruiting ATS), MindTech
(coaching app).
Develop backend features and business logic for large SaaS products, from database to
API and admin UI.
Build REST and JSON-RPC APIs, background workers and cron jobs (notifications,
reminders, reports, data sync).
Integrate payments and third-party services: Stripe, LiqPay, WayForPay, Apple / Google
in-app purchases, Shopify, UPS, Firebase, Zoho CRM.

Write PHPUnit tests and take part in code review; GitLab CI/CD with static analysis and
SonarQube, Docker, Sentry.
Contribute new functionality to the Festi Framework itself.
Stack PHP 8.2, Festi Framework, PostgreSQL, MySQL, MS SQL Server, memcached, Docker, GitLab
CI/CD, Sentry, PHPUnit.

Apr 2026 – Present Backend PHP Developer (part-time)
Remote Freelance
Integration middleware for GRS (Booqable, Microsoft Business Central ERP,
WooCommerce), FrenchLift Academy e-learning platform, Henri Grandjean watch
configurator.
Laravel 12/13 and Filament 4 applications: data sync services, queue workers, payments
(Stripe), PDF generation.
Docker, GitLab CI / GitHub Actions, Pest and Playwright tests, PHPStan, Rector.

Jan 2019 – Apr 2023 PHP Backend Developer
Kharkiv, Ukraine Perfectorium
Projects: Deeded (online real-estate closing platform, Canada), HessenForst (German state
forestry CRM), Quanto Custa Reformar (Brazil), CityAlko (Estonia), WordPress sites incl.
Kharkiv City Council.
Built Laravel CRMs and REST APIs with JWT auth, 2FA and Swagger / OpenAPI docs.
Integrations: Google Calendar, AWS S3 / WorkDocs, Stripe, SendGrid, Slack, ID
verification.
Queues and background jobs, unit and feature tests, Docker, GitLab CI/CD, Graylog
logging.
Custom WordPress backends with ACF and Carbon Fields.
Stack PHP 7–8, Laravel, WordPress, MySQL, Docker, GitLab CI/CD, AWS, PHPUnit.

Jun 2018 – Jan 2019 PHP Developer
Kharkiv, Ukraine Geniustudio
Backend development on Yii2, WordPress and Bitrix24: e-commerce store (unityre.kz),
partner API, optimisation, bug fixing.