Senior Backend Developer (PHP)
P-Product ·
- Work mode
- Remote
- Seniority
- Senior
- Category
- Backend
- Experience
- 7+ years
P-Product ·
Project Overview
You will be joining a mature, data-driven digital health platform that helps users better understand their health, performance, and longevity through personalized insights. The product aggregates and processes large volumes of biometric, laboratory, and lifestyle data, transforming them into actionable recommendations using advanced analytics.
From a technical perspective, this is a high-load, production-grade system with:
complex backend logic and data pipelines,
heavy API usage and third-party integrations,
strict requirements for reliability, performance, and scalability,
continuous growth in users, data volume, and feature set.
The platform operates as a long-running SaaS product with a strong focus on backend architecture, data consistency, and system evolution rather than short-term feature delivery.
Responsibilities
As a Senior Backend Developer you will:
Design, develop, and maintain backend services written in PHP
Take ownership of backend architecture decisions and long-term technical direction
Build and evolve RESTful APIs used by web and mobile clients
Work with relational databases and optimize queries and data models
Participate in designing scalable solutions for high-load environments
Integrate and maintain third-party services and internal subsystems
Ensure code quality through clean, readable, and maintainable code
Collaborate with frontend engineers, QA, DevOps, and product stakeholders
Participate in code reviews and technical discussions
Contribute to system stability, performance optimization, and technical debt reduction
Requirements
Must-have
7+ years of professional web development experience
Strong knowledge of PHP 7.x and 8.x
Excellent understanding of OOP, MVC, and ORM principles
Solid experience with RESTful architecture and API design
Hands-on experience with Yii and Symfony, with a good understanding of modern PHP framework architecture
Working knowledge of JavaScript/TypeScript, including React, Next.js, and jQuery
Experience with MySQL and/or PostgreSQL
Experience with Git and Jira
Understanding of backend scalability, performance tuning, and distributed system fundamentals
Familiarity with Nginx, Docker, and docker-compose
Experience working with high-load or data-intensive systems
Ability to write clean, readable, and maintainable code
English level: B2 (Upper-Intermediate) or higher
Nice to have
Experience with Redis, RabbitMQ, or Gearman
Experience with TeamCity or other CI/CD tools
Basic knowledge of GNU/Linux and bash