PHP Developer

Quick Facts

• Contract duration: 4 months

• Work model: 100% remote

• Travel: None

• Contract type: B2B

• Rate: 50–160 PLN/h

• Own equipment required

Description

Support a PHP application modernization initiative by validating application behavior after upgrading the codebase to a newer PHP version, ensuring code quality, and improving technical documentation. You will analyze legacy code, identify compatibility issues from the upgrade, perform functional/technical validation, review code, and document changes. You will also verify integrations, APIs, and business-critical functionality impacted by version upgrades.

Responsibilities

• Analyze existing PHP codebases and identify potential compatibility issues after PHP upgrades

• Perform functional and technical validation following code modernization

• Execute code reviews and recommend improvements

• Create and maintain technical documentation describing application behavior and implemented changes

• Work with developers to resolve issues identified during testing and validation

• Validate integrations, APIs, and business-critical functionality affected by version upgrades

• Support knowledge transfer and documentation activities

Requirements

Must Have

• 5+ years of PHP development experience

• Strong understanding of legacy PHP applications and version migrations

• Experience reviewing PHP code and validating application functionality

• Good technical documentation skills

• Experience with MySQL

• Experience working with APIs (REST/SOAP)

• Strong analytical and problem-solving skills

• Ability to work independently

Nice to Have

• Previous QA or Software Quality experience

• PHPUnit experience

• Experience with Symfony, Laravel, or similar PHP frameworks

• Experience documenting legacy systems

• Experience performing application modernization projects

Benefits

• Remote work (100%) with no business travel

• 4-month B2B contract