(Senior) PHP Developer

Job description

We are looking for experienced PHP developers for backend programming tasks. You will support our new developments on the backend side, as well as maintain our existing systems in a modern, microservice-based (SOA) architecture.

  • Development of PHP microservices
  • Writing high quality, reusable, „clean” code
  • Writing tests
  • System designing
  • Recognizing and fixing architecture related issues, performance optimization
  • Database designing
  • Database query optimization

What we offer

  • Competitive salary based on experience
  • Home office/remote work with flexible working hours
  • Professional development within an international, technology and developer focused company
  • Working with cutting edge technologies
  • Various projects and possibility of changing projects within the company depending on your interest
  • Being part of the day-to-day development of a self-developed, high-traffic streaming service platform
  • Flat organization with small teams where all team members are actively involved in decision making process
  • Stress-free environment and predictable workflows
  • Atlassian (Jira, BitBucket, Confluence) and JetBrains software stack
  • Professional in-house workshops, trainings and English course

Job requirements

General software developer skills

  • Algorithmic complexity, basic algorithms
  • Memory management fundamentals (heap, stack)
  • Exception handling
  • Clean code concepts
  • Understanding of the more frequently used UML diagrams (class diagram, activity diagram, deployment diagram)
  • User-level experience with Linux (SSH, Bash, permission management)
  • Git fundamentals:
    • Commit, push fetch
    • Branches; creation of merge commits

Object oriented programming

  • OOP fundamentals, polymorphism, abstraction
  • Design patterns: MVC, Dependency Injection, Adapter, Factory
  • SOLID concepts

PHP knowledge

  • Experience in at least one modern PHP framework (eg. Symfony, Laravel, Yii)
  • Experience in a modern templating system (eg. Twig)
  • Experience in a modern ORM solution (eg. Doctrine, Eloquent)
  • Types, type juggling
  • Comparison operators
  • Understanding of the basic LAMP stack
  • PHP OOP quirks & features
  • Error handling
  • Performance optimization techniques and tools


  • Database anomalies, normal forms, normalization
  • Entity-Relationship diagrams (design and reading)
  • Foreign keys, unique keys, contraints
  • Indexes
  • Concurrent data handling anomalies, transactions
  • Writing complex SQL queries
  • Optimizing SQL queries for performance


  • Experience with Redis, Memcached, Elasticsearch
  • Experience in unit testing (eg. PHPUnit)
  • Experience in functional testing (eg. Behat)
  • Good knowledge of PHP extensions (eg. GD, bcmath, mbstring)
  • Web services (eg. SOAP, JSON REST)

Soft Skills

  • Intermediate level English (written, spoken)
  • Good communication skills
  • Proactive, solution oriented approach
  • Willingness to work in a team