SW Engineer (PHP)
Core
Building and maintaining a high-scale, distributed backend platform for a global 3PL (third-party logistics) company, handling order fulfillment, inventory management, and warehouse automation for thousands of e-commerce merchants.
Role type
Senior PHP Backend Engineer
Builds
A monolithic REST-like API and internal tools for warehouse robots, packers, conveyors, and merchant dashboards.
Domain
Logistics / E-commerce / Supply Chain
Deliverable
production ML models | product features | infrastructure
Required skills
PHP 8.5, Symfony 7, Docker, Kubernetes, Doctrine ORM, RabbitMQ, MySQL 8, GraphQL, Elasticsearch, SQL query optimization, concurrency control, HA/failover design, CI/CD pipelines, automated testing (PHPUnit, Cypress), static analysis (PHPStan), security scanning.
Preferred skills
Experience with large-scale distributed systems, race condition handling, open-source contribution, writing custom coding standards.
Technologies
PHP, Symfony, Docker, Kubernetes, Argo CD, GitLab CI, DataDog, Sentry, Opsgenie, Elasticsearch, GraphQL, MySQL, RabbitMQ, React, TypeScript, Cypress, PHPStan, PHPUnit.
Responsibilities
Develop and refactor backend services for warehouse automation and merchant-facing features; optimize terabyte-scale SQL queries; design for high availability and autoscaling; implement rigorous automated testing and static analysis; collaborate on monorepo architecture and CI/CD deployment pipelines.
Seniority
Senior, hands-on IC