Backend Developer (PHP)

Developing web applications and APIs in PHP using modern frameworks

Backend Engineering Junior Middle Senior Lead / Staff Principal
Full Matrix Career Track PDF
63 skills
5 levels
198 mandatory
310 requirements

Backend Developer (PHP) is a role in the Backend Engineering family. It has 63 skills across 5 levels (from Junior to Principal). 198 skills are mandatory. Key domains: Programming Fundamentals, Backend Development, Database Management.

Technology Stack

Junior PHP 8.3+, Laravel 11/Symfony 7, MySQL/PostgreSQL, Eloquent/Doctrine, Composer, PHPUnit, Docker, REST API basics
Middle PHP 8.3+, Laravel/Symfony, PostgreSQL/Redis, RabbitMQ basics, PHPStan/Psalm, Laravel Horizon/Symfony Messenger, Docker Compose, CI/CD
Senior PHP 8.3+, Swoole/RoadRunner/FrankenPHP, DDD, PostgreSQL/Redis/Elasticsearch, Kafka, Xdebug/Blackfire profiling, Kubernetes basics
Lead / Staff Microservices (PHP + Go/Node.js), API Gateway, Event Sourcing, Kubernetes, Terraform, PHP standards (PSR), Architecture Decision Records
Principal Multi-language architecture, Legacy modernization, Platform strategy, PHP RFC contributions

Focus by Level

Junior

Building CRUD functionality in Laravel/Symfony. Writing migrations and Eloquent/Doctrine models. Writing feature tests. Fixing bugs. Working with Blade/Twig templates.

Middle

Designing REST APIs. Working with queues (Laravel Queue/Symfony Messenger). Optimizing N+1 queries. Setting up caching. Integrating with external APIs. Code review.

Senior

Application architecture design (DDD, Hexagonal). Performance optimization (OPcache, Swoole/RoadRunner). Migration to PHP 8.3+. Event-driven system design.

Lead / Staff

Microservice architecture on PHP. Coding standards. Legacy code modernization strategy. Framework selection. Coordinating backend and frontend.

Principal

Technology strategy: PHP vs other languages. Modernizing enterprise applications. Scalable system architecture. Participating in PHP community.

Skill Matrix

63 skills × 5 levels. Click on a cell for details.

A Awareness W Working V Advanced E Expert

AI-Assisted Development

4 skills
Skills Jun Mid Sen Lead Princ
GitHub Copilot A W A E E
Cursor IDE A W A A
ChatGPT / Claude A W W A E
Prompt Engineering for Code A W A E

API & Integration

9 skills
Skills Jun Mid Sen Lead Princ
REST API Design A W A E E
GraphQL Design A W A E E
WebSocket API Design A W A A E
gRPC & Protocol Buffers A W A E E
gRPC & Protocol Buffers A W A A E
API Versioning Strategies A W A E E
API Documentation A W A E E
API Testing A W A E E
Rate Limiting & Throttling A W A E E

Architecture & System Design

5 skills
Skills Jun Mid Sen Lead Princ
System Design Fundamentals A W A E E
Microservices Decomposition A W A A E
Clean Architecture A W A E E
CQRS A W A E E
Event-Driven Architecture A W A E E

Backend Development

8 skills
Skills Jun Mid Sen Lead Princ
PHP Frameworks A W A E E
Apache Kafka A W A E
RabbitMQ A W A E E
Message Broker Patterns A W A E E
Redis A W A E E
Caching Strategies A W A E E
Task Queues A W A E E
Elasticsearch / OpenSearch A W A E E

Cloud & Infrastructure

5 skills
Skills Jun Mid Sen Lead Princ
Docker A W A E E
Kubernetes Core A W A E E
Terraform A W W A E
AWS A W A E E
Network Fundamentals A W A

Database Management

9 skills
Skills Jun Mid Sen Lead Princ
PostgreSQL A W A E E
MySQL / MariaDB A W A E E
Database Indexing A W A E E
Query Optimization A W A E E
Transactions & Concurrency A W A E E
Connection Pooling A W A E E
Database Sharding A W A E E
Data Modeling & Schema Design A W A E E
Database Migrations A W A E E

DevOps & CI/CD

1 skills
Skills Jun Mid Sen Lead Princ
GitHub Actions / GitLab CI A W A E E

Observability & Monitoring

5 skills
Skills Jun Mid Sen Lead Princ
Structured Logging A W A E E
ELK Stack A W A A E
Prometheus & Grafana A W A E E
OpenTelemetry A W A A E
SLI / SLO / SLA A W A A E

Programming Fundamentals

8 skills
Skills Jun Mid Sen Lead Princ
Algorithms & Complexity A W A E E
Data Structures A W A E E
OOP & SOLID Principles A W A E E
Design Patterns A W A E E
Multithreading A W A A E
Async Programming A W A E E
Code Quality & Refactoring A W A E E
Type Safety & Type Systems A W A E E

Security

3 skills
Skills Jun Mid Sen Lead Princ
OWASP & Application Security A W A E E
Secure Coding Practices A W A E E
JWT / OAuth2 / OIDC A W A E E

Testing & QA

4 skills
Skills Jun Mid Sen Lead Princ
TDD & BDD A W A E E
Unit Testing A W A E E
Integration Testing A W A E E
E2E Testing A W A A E

Version Control & Collaboration

2 skills
Skills Jun Mid Sen Lead Princ
Git Advanced A W A E E
Code Review A W A E E

FAQ

What skills are needed for the Backend Developer (PHP) role?

The Backend Developer (PHP) role requires 63 skills, of which 198 are mandatory. Skills are distributed across 5 levels: from Junior to Principal. See full matrix.

How to advance to the next level in the Backend Developer (PHP) role?

Use the Grade Calculator to assess your current level and get personalized recommendations. The system will show which skills need to be developed for the next level.

What tech stack is used in the Backend Developer (PHP) role?

The stack includes 5 technologies at different levels. PHP 8.3+, Laravel 11/Symfony 7, MySQL/PostgreSQL, Eloquent/Doctrine, Composer, PHPUnit, Docker, REST API basics, PHP 8.3+, Laravel/Symfony, PostgreSQL/Redis, RabbitMQ basics, PHPStan/Psalm, Laravel Horizon/Symfony Messenger, Docker Compose, CI/CD, PHP 8.3+, Swoole/RoadRunner/FrankenPHP, DDD, PostgreSQL/Redis/Elasticsearch, Kafka, Xdebug/Blackfire profiling, Kubernetes basics...

How does the community define requirements for the Backend Developer (PHP) role?

Role requirements are shaped by the community through a proposal system. Any member can suggest changes that go through voting and expert review.

Community

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