Mid/Senior PHP Developer

Quick Facts

• Role: Mid/Senior PHP Developer

• Work mode: Remote from within Poland

• Project duration: Initial 3-month contract with extension possible

• Contract rate (B2B): Mid 700–850 PLN/MD; Senior 900–1150 PLN/MD

Description

You will join a team responsible for developing and maintaining large e-commerce backend platforms serving tens of thousands of users concurrently. The solutions require high performance, scalability, reliability, and security. You will co-create modern backend services, help shape technology decisions, and deliver features for large-scale sales platforms.

Responsibilities

• Develop and maintain backend applications in PHP using Symfony

• Design and implement new functionality for high-traffic environments

• Analyze and optimize application and service performance

• Integrate with external APIs and web services

• Write high-quality code aligned with SOLID and good development practices

• Collaborate with developers, testers, Product Owners, and Scrum Masters

• Participate in code reviews and quality improvement activities

• Ensure security and system stability

• Take part in architectural discussions and technology selection/deployment

Requirements

• Mid: at least 3 years of commercial PHP development; Senior: at least 5 years

• Very strong knowledge of the Symfony framework

• Practical OOP and design patterns experience

• Ability to write readable, maintainable code following SOLID principles

• Experience with ElasticSearch, Redis, and RabbitMQ

• Knowledge of databases such as MySQL or MongoDB

• Good knowledge of Git

• Experience integrating with external APIs and web services

• Ability to analyze and optimize application performance

• Knowledge of web application security

• Experience using AI tools in daily work to improve efficiency or solution quality

• Excellent communication skills and a teamwork mindset

• Proactive approach to problem-solving and continuous learning

Benefits

• Develop and maintain major e-commerce platforms (up to ~60,000 concurrent users)

• Modern technology environment using PHP, Symfony, ElasticSearch, Redis, and RabbitMQ

• Real impact on architecture decisions and technology choices

• Growth opportunities in performance, scalability, and security for high-traffic systems