We’re looking for a Senior PHP developer to migrate a legacy smart factory application suite (RF-Tools, ACPG, ELCA++) from PHP 5.3/5.4 to PHP 8.4. The role focuses on upgrading the PHP runtime and related libraries (including dompdf) without changing existing business functionality. The Candidate will refactor code to resolve breaking changes, ensure compatibility with MariaDB/MySQL and on-premises Active Directory authentication, and support a time-and-materials engagement over an estimated 3–4-week period.
Responsibilities:
- Migrate legacy PHP applications from versions 5.3/5.4 to 8.4 without changing business functionality
- Upgrade and align all dependencies (including dompdf) and fix breaking changes
- Refactor legacy code for PHP-8.4 compatibility
- Ensure stable operation with MariaDB/MySQL and on-premises Active Directory authentication
- Collaborate with the Customer in a time-and-materials engagement over an estimated 3–4-week period
Requirements:
- Proven experience as a Senior PHP Developer migrating legacy PHP 5.x applications to PHP 8.x
- Strong knowledge of PHP internals and typical breaking changes introduced in PHP 7/8 and related extensions
- Hands-on experience with MariaDB/MySQL back-ends and authentication via LDAP/Active Directory
- Ability to work with legacy code, refactor deprecated patterns, and fix migration issues in a focused short-term time-and-materials engagement
- English level – Upper-Intermediate or higher
We offer:
- Remote-first work model with flexible working hours (we provide all equipment)
- Comfortable and fully equipped offices in Lviv and Rzeszów
- Competitive compensation with regular performance reviews
- 18 paid vacation days per year + all state holidays
- 12 days of paid sick leave per year without a medical certificate + extra paid leave for blood donation
- Medical insurance with an affordable family coverage option
- Mental health program which includes free and confidential consultations with a psychologist
- English, German, and Polish language courses
- Corporate subscription to learning platforms, regular meetups and webinars
- Friendly team that values accountability, innovation, teamwork, and customer satisfaction
- Inclusive environment where everyone feels valued and treated equally. We proudly partner with VeteranHub to support Ukrainian veterans
- We are committed to supporting Ukraine and actively participate in charity initiatives