Backend Developer (Symfony)

Brief

We’re seeking an experienced Backend Developer to help lead the backend efforts for a high-traffic booking platform. This role combines hands-on software engineering with architectural influence, product ownership, and cross-functional collaboration.

As part of the team, you’ll help build robust, scalable server-side systems using the latest technologies, design efficient APIs, and ensure high performance and reliability to support both internal operations and public-facing services.

About the Client

Our client operates a rapidly growing digital platform built to make planning and booking group transportation effortless and scalable. With nationwide reach in the Netherlands and a focus on delivering the best user experience and price for coach travel, they combine travel logistics with a cutting-edge web application used by thousands of customers each year.

Responsibilities

• Architect, develop, and maintain backend services using Symfony

• Build and extend GraphQL APIs for internal and public consumption

• Drive database schema design and performance tuning (MySQL/PostgreSQL)

• Build efficient, secure, and scalable systems

• Collaborate closely with frontend developers working in React

• Integrate workflow automation logic (e.g., using n8n)

• Participate in architecture and technical decision-making

• Contribute to DevOps practices (Dockerization, CI/CD, deployments)

• Mentor engineers and contribute to code reviews and best practices

Tech Stack

• Backend: PHP 8+ with Symfony

• Frontend Integration: React

• Styling: Tailwind CSS

• APIs: GraphQL

• Databases: MySQL, PostgreSQL

• Workflow Automation: n8n

• Containers/DevOps: Docker

Requirements

Qualifications

• 3+ years experience in backend development

• Strong expertise in PHP and Symfony

• Proven experience with GraphQL API design

• Solid understanding of SQL with MySQL and/or PostgreSQL

• Experience with Docker and containerized workflows

• Familiarity with workflow automation platforms (e.g., n8n)

• Comfortable integrating backend services with modern frontend frameworks (React)

• Experience with REST and GraphQL architectures

• Excellent problem-solving and communication skills