About the Position

We are seeking a PHP Developer with 5+ years of experience to join our team for an enterprise collaboration platform project.

About the Project

Development and support of an enterprise collaboration platform based on Mailcow and SOGo. The system consists of the following components: mail server, calendar, contacts, resource management, and booking. The project includes the integration of several open-source components and custom modifications.

Responsibilities

Developing new features for the SoGo calendar and resource management
Maintaining and refactoring legacy code (AngularJS 1.x)
Performance optimization (backend and frontend)
Bug and technical debt fixing

Integrations

Component integration (mail, calendar, contacts)
API development for external integrations
Migration to external databases (MySQL clusters)

Technical Stack

Backend

PHP 7.4+ (PDO, OOP, REST API)
MySQL 8.0+ / MariaDB 10.11+ (including migrations to external clusters)
Docker and Docker Compose
Nginx
Redis (caching, sessions)
SOGo (CalDAV/CardDAV server)
Postfix, Dovecot (mail server)

Frontend

AngularJS 1.x (legacy, needs support and improvement)
JavaScript (ES5/ES6+)
HTML5, CSS3
Bootstrap, Material Design
SOGo Web Interface (customization via JS scripts)

Integrations and Protocols

CalDAV/CardDAV
IMAP/SMTP
LDAP
iCalendar (iCal/iMIP)
REST API

Requirements

5+ years of commercial development
Experience supporting and developing legacy systems
Experience launching production with 500+ users and integrating open-source solutions
Experience working with Docker in production

Technical Skills

Deep knowledge of PHP (OOP, patterns, PSR)
Experience with MySQL/MariaDB (complex queries, optimization, replication)
Understanding of web application architecture
Experience developing REST APIs
Working with Docker and containerization
Understanding of email protocols (IMAP/SMTP) is a plus
Experience with AngularJS 1.x or a willingness to learn quickly
JavaScript (ES5/ES6+)
HTML5, CSS3

Soft Skills

Analysis and work with legacy code
Documenting solutions
Teamwork
Independence and responsibility
Willingness to learn project specifics

Preferred Skills

Experience with MailCow, SOGo, or other CalDAV/CardDAV servers
Knowledge of the CalDAV, CardDAV, and iCalendar protocols
Understanding of enterprise collaboration systems
Experience with GitLab CI/CD

Team

It is planned that the project will initially have one developer.

Work Format

Remote, Moscow time zone, part-time, 2 hours per day.

About the Company

Developing comprehensive IaaS and PaaS solutions for various business categories, we are committed to delivering high-quality software solutions.

PHP Developer

Job description