Backend Engineer - Sponsored Content & Products (all genders) Hamburg, Germany

About You - Collins GmbH & Co. KG; Hamburg; On-site; EUR 65,000 - 95,000; Full time

Job summary

About You - Collins GmbH & Co. KG is seeking a Backend Engineer (m/f/d) to join the Sponsored Content & Products team within ABOUT YOU's Retail Media Tech organization in Hamburg.

You will build scalable core services from day one, shaping the product's technical foundation as we scale infrastructure for CPC bidding marketplaces. You will write PHP 8.2+ and Laravel code powering self-serve CPC bidding and brand tools, implement tests, review peers, and collaborate with product managers and

Qualifications

• Strong PHP 8.2+ experience and Laravel framework.
• Experience writing unit and integration tests.
• Familiarity with CI/CD processes and tooling.
• Ability to translate ad-tech requirements into reliable backend code.

Responsibilities

• Write clean PHP 8.2+ and Laravel to power backend services and RESTful APIs.
• Write unit and integration tests and participate in code reviews.
• Collaborate with PMs, frontend engineers and senior tech leads to break down features.
• Ensure deployments are safe and predictable in production.
• Monitor health and debug backend issues to keep latency low.
• Explore AI tool integration to speed up boilerplate and testing.

Skills

PHP 8.2+

Laravel

Unit tests

Integration tests

CI/CD

Code reviews

Debugging

AI tools

Tools

REST APIs

Git

CI/CD tooling

Job description

We are looking for a Backend Engineer (m/f/d) to join our newly established Sponsored Content & Products team within ABOUT YOU's Retail Media Tech organization.

The Sponsored Content & Products team is a key growth driver. Its mission is to build highly scalable self-serve cost-per-click (CPC) bidding marketplaces that empower brands to efficiently boost their visibility in real time right at the digital point of sale.

This is an exciting technical greenfield opportunity where you will work on building scalable core services from day one, helping shape the product's technical foundation as we scale our infrastructure to support our target of multiplying our Retail Media revenue.

• Write clean, reliable PHP 8.2+ and Laravel code to build backend services and RESTful APIs that power our self-serve CPC bidding marketplace and brand tools
• Write comprehensive unit and integration tests, actively participate in peer code reviews, and identify areas for refactoring to keep high-throughput ad pipelines clean and maintainable
• Partner closely with product managers, frontend engineers, and senior tech leads to break down marketplace features, estimate technical tasks, and translate ad-tech requirements into working code
• Follow established repository structures, coding conventions, and CI/CD pipeline steps to ensure backend updates deploy safely and predictably to production.
• Help monitor application health and debug backend issues, making sure real-time ad serving and bidding endpoints remain fast and reliable
• Integrate modern AI tools like Cursor, Claude Code, or Gemini into your daily workflow to speed up boilerplate creation, test writing, and problem-solving