Senior PHP/Symfony Engineer — Integrations & Automation

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior PHP/Symfony Engineer — Integrations & Automation based in Switzerland. Join a remote engineering team responsible for building and scaling a critical business automation platform that connects eCommerce, ERP, CRM, and sales systems. In this senior role, you will help shape the platform’s architecture, improve data synchronization, and ensure reliable operations across essential business workflows. You will work with an existing developer to deliver maintainable integrations, robust asynchronous processing, and effective production monitoring. The role combines backend engineering with API integrations, browser automation, AI-powered product data enrichment, and React-based internal tools. Your contributions will directly support eCommerce and sales operations while improving efficiency, data quality, and system reliability. This is a full-time remote opportunity open across Europe, with working hours that overlap with the team between 10:00 and 19:00 Paris time. Accountabilities - Own and evolve the architecture of the internal business automation platform, ensuring it remains scalable, maintainable, observable, and reliable. - Design and maintain robust data models for customers, orders, leads, accounts, and products, using relational databases and appropriate persistence patterns. - Build, operate, and improve daily synchronization workflows connecting ERP systems, eCommerce stores, and sales tools, including customer and order synchronization, lead scoring, account assignment, and data write-backs. - Develop and maintain integrations with eCommerce platforms using GraphQL APIs, bulk operations, and webhooks, as well as REST and SOAP APIs for other business systems. - Improve synchronization reliability by handling API rate limits, missing records, failures, and data inconsistencies while protecting the quality and integrity of write-back operations. - Build and maintain browser automation workflows using headless browsers in Node.

js for processes without suitable APIs, alongside web scraping solutions that may use proxy infrastructure. - Use AI models to enrich and categorize product data while balancing processing costs, accuracy, and operational efficiency. - Manage Symfony Messenger queues, scheduled jobs, background workers, and asynchronous processing, ensuring failed messages are diagnosed and resolved promptly. - Maintain production health through effective monitoring, alerts, operational digests, and runbooks while reducing unnecessary notifications and improving incident response. - Develop and maintain React-based interfaces for internal users and support the automation of sales engagement and SEO-related workflows. - Strengthen automated testing across the platform, including unit and end-to-end tests, and ensure reliable execution through CI/CD pipelines. - Collaborate closely with the existing developer, take ownership of technical outcomes, and continuously identify opportunities to simplify workflows and improve platform performance. Requirements - At least 5 years of professional software development experience, with substantial hands-on experience building applications using PHP and Symfony. - A degree in Computer Science or a related discipline, or equivalent practical experience. - Proven experience designing, building, and maintaining production integrations and automation workflows involving third-party systems such as ERP, eCommerce platforms, CRMs, and sales tools. - Strong software architecture skills, including the ability to design and operate scalable, maintainable, and monitorable applications. - Deep knowledge of relational data modeling and databases such as PostgreSQL, along with practical experience using Doctrine ORM. - Expert knowledge of PHP 8 and the Symfony framework.