Python Backend Engineer

WPP is the trusted growth partner for the world’s leading brands.

We unite cutting-edge media intelligence and data solutions, world-class creativity, next-generation production, transformative enterprise solutions and expert strategic counsel in a single company – powered by exceptional talent and our agentic marketing platform, WPP Open, to help our clients navigate change, capture opportunity and deliver transformational growth. We work with the world's most valuable brands and have global reach across 100+ markets, with deep local expertise. Our people are the key to our success. We're committed to fostering a culture of creativity, belonging and continuous learning, attracting and developing the brightest talent, and providing exciting career opportunities that help our people grow. For more information, visit WPP.com.

Why we're hiring:

WPP’s Data & Technology Solutions is the WPP’s unified global data products and technology team. We work with our agencies and clients to build data data-driven solutions and technology product to power marketing transformation.

WPP Open is our AI platform for marketing, it connects marketing professionals, data, tools and AI in a single place. WPP Open is the simplest, safest and fastest way to realize the benefits of scaled AI – delivering better-informed creative ideas faster, at scale and at lower cost.

We’re endlessly curious and our team of thinkers, builders, creators and problem solvers are over 2,000 strong, across 20 markets around the world.

Location Requirement

This is a hybrid role based in Warsaw, Poland . Candidates must currently reside in Poland or be willing to relocate independently to Warsaw, as relocation support is not provided for this position.

Who we are looking for:

We are seeking a talented and experienced Backend Engineer to join our Data & Technology Solutions team. You will be instrumental in designing, developing, and maintaining the robust and scalable backend systems that power our cutting-edge marketing technologies, including the WPP Open AI platform. If you have a passion for building high-performance APIs, working with large datasets, and contributing to the future of AdTech, we want to hear from you.

What you'll be doing:

Design and Develop Robust Backend Systems

Design, develop, and implement high-performance, scalable, and resilient backend services and APIs (REST, gRPC) that support our various data products and AI platforms.

Write clean, maintainable, and efficient code in [e.g., Python (mandatory)] using best practices and appropriate design patterns.

Collaborate with architects and senior engineers to define system architecture, data models, and integration strategies.

Integrate with internal and external data sources, AI/ML services, and third-party APIs relevant to the AdTech ecosystem.

Ensure Scalability, Reliability, and Performance

Optimize existing backend services for maximum speed, scalability, and stability, handling large volumes of data and traffic inherent in the AdTech domain.

Implement robust monitoring, logging, and alerting solutions to proactively identify and address system issues.

Participate in performance tuning, troubleshooting, and debugging of complex backend systems.

Contribute to the continuous improvement of our deployment processes, CI/CD pipelines, and cloud infrastructure interactions.

Uphold Code Quality and Best Practices

Conduct thorough code reviews, ensuring adherence to coding standards, security best practices, and architectural guidelines.

Develop comprehensive unit, integration, and end-to-end tests to guarantee the quality and reliability of backend components.

Contribute to technical documentation, including API specifications, architectural diagrams, and system runbooks.

Actively participate in the agile development process, including sprint planning, daily stand-ups, and retrospectives

Who you are:

A proficient backend developer with a strong understa