Senior Staff, Data Engineer

249 Discovery Polska Sp. z o.; Warszawa; Hybrid; PLN 240,000 - 360,000; Full time

Benefits offered by this job

Private medical care

Life and accident insurance

MyBenefit cafeteria platform

Sports card

Social fund

Retirement pension plan

Employee Referral Program

Free HBO Max access

Job summary

Warner Bros. Discovery is seeking a Senior Staff Data Engineer to design and deliver data pipelines that process billions of ad events daily across our global ecosystem.

You will set technical standards for distributed data engineering, drive modernization of legacy workflows into modular cloud-native systems, and ensure data is delivered reliably and securely for monetization and decisioning. Join a collaborative team with strong emphasis on observability, lakehouse architectures, and

Qualifications

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.
• PhD preferred for advanced expertise in distributed systems or statistical optimization.
• 8+ years of experience designing and operating enterprise-scale data platforms with high-throughput pipelines.
• Hands-on expertise with AWS/GCP/Azure, open table formats (Iceberg, Delta, Hudi), and distributed compute (Spark, Flink, Presto).
• Deep knowledge of Kafka, Kinesis, or Pub/Sub for powering low-latency ingestion and activation.
• Skilled in CI/CD, automation, observability, and governance frameworks for enterprise-grade data engineering.
• Familiarity with advertising workflows including forecasting, yield optimization, identity, and campaign execution.
• Demonstrated ability to partner with data scientists, product, and platform engineering, while mentoring junior engineers.

Responsibilities

• High-Scale Data Pipeline Engineering: Design and maintain ingestion, ETL, and activation pipelines supporting real-time and batch processing of multi-billion event datasets.
• Platform Modernization & Lakehouse Development: Modernize legacy ad-tech systems into open, lakehouse-based architectures (Iceberg, Delta, Hudi) for unified analytics and monetization. Embed observability, data lineage, and automation frameworks to reduce technical debt and improve resiliency.
• Cross-Functional Data Delivery: Partner with Data Science to operationalize ML models for forecasting, optimization, and personalization. Ensure downstream data delivery into ad servers, identity systems, and activation platforms is low-latency and privacy-compliant.
• Architectural Leadership & Mentorship: Act as a domain expert in distributed systems, streaming, and big data engineering. Mentor junior engineers, share best practices, and elevate engineering standards across global teams.

Skills

Data pipelines design

Cloud platforms

Distributed systems

Streaming frameworks

CI/CD observability

Education

Bachelor’s or Master’s degree in CS/Engineering

PhD preferred

Tools

Kafka

Kinesis

Pub/Sub

Spark

Flink

Presto

Iceberg

Delta

Hudi

Job description

Welcome to Warner Bros. Discovery… the stuff dreams are made of. Who We Are… When we say, “the stuff dreams are made of,” we’re not just referring to the world of wizards, dragons and superheroes, or even to the wonders of Planet Earth. Behind WBD’s vast portfolio of iconic content and beloved brands, are the storytellers bringing our characters to life, the creators bringing them to your living rooms and the dreamers creating what’s next… From brilliant creatives, to technology trailblazers, across the globe, WBD offers career defining opportunities, thoughtfully curated benefits, and the tools to explore and grow into your best selves. Here you are supported, here you are celebrated, here you can thrive.

Your New Role

The Senior Staff Data Engineer is accountable for designing and delivering data pipelines that process billions of ad events daily across WBD’s global ecosystem. This role sets technical standards for distributed data engineering, drives modernization of legacy workflows into modular cloud-native systems, and ensures mission-critical data is delivered reliably, securely, and cost-efficiently for monetization and decisioning.

What's in in for you

Contract of employment

Benefits package

• private medical care
• life and accident insurance
• MyBenefit cafeteria platform
• sports card
• social fund
• retirement pension plan
• Employee Referral Program

Free access to the HBO Max platform

Work-life balance initiatives

• well-being platform
• yoga
• massages
• educational webinars
• Employee Support Program
• film screenings organized by employees in the office cinema

Training and development

• training platform
• co-financing of English lessons
• Employee Resource Groups
• Engagement Club - the opportunity to develop your interests in thematic employee groups, online meetings with experts

CSR activities

• volunteering
• ecological and social initiatives

Access to parking spaces

Your Role Accountabilities

• High-Scale Data Pipeline Engineering: Design and maintain ingestion, ETL, and activation pipelines supporting real-time and batch processing of multi-billion event datasets. Optimize data workflows for latency, reliability, and scalability in cloud-native environments.
• Platform Modernization & Lakehouse Development: Modernize legacy ad-tech systems into open, lakehouse-based architectures (Iceberg, Delta, Hudi) for unified analytics and monetization. Embed observability, data lineage, and automation frameworks to reduce technical debt and improve resiliency.
• Cross-Functional Data Delivery: Partner with Data Science to operationalize ML models for forecasting, optimization, and personalization. Ensure downstream data delivery into ad servers, identity systems, and activation platforms is low-latency and privacy-compliant.
• Architectural Leadership & Mentorship: Act as a domain expert in distributed systems, streaming, and big data engineering. Mentor junior engineers, share best practices, and elevate engineering standards across global teams.

Qualifications & Experience

Education

Bachelor’s or Master’s degree in Computer Science, Engineering, or related field. PhD preferred for advanced expertise in distributed systems or statistical optimization.

Data Engineering Expertise

8+ years of experience designing and operating enterprise-scale data platforms with high-throughput pipelines.

Cloud & Lakehouse Architectures

Hands-on expertise with AWS/GCP/Azure, open table formats (Iceberg, Delta, Hudi), and distributed compute (Spark, Flink, Presto).

Streaming & Real-Time Systems

Deep knowledge of Kafka, Kinesis, or Pub/Sub for powering low-latency ingestion and activation.

Operational Excellence

Skilled in CI/CD, automation, observability, and governance frameworks for enterprise-grade data engineering.

AdTech Domain Knowledge

Familiarity with advertising workflows including forecasting, yield optimization, identity, and campaign execution.

Collaboration & Mentorship

Demonstrated ability to partner with data scientists, product, and platform engineering, while mentoring junior engineers.

#Tech Hybrid Working

This role is advertised as a Hybrid work model, that combines remote and in-office work, following our current company policy and to be agreed with your Line Manager. Subject to any applicable laws, WBD / your Line Manager reserves the right to change this working agreement where this is essential to business needs and upon reasonable notice to you.

How We Get Things Done…

This last bit is probably the most important! Here at WBD, our guiding principles are the core values by which we operate and are central to how we get things done. You can find them at www.wbd.com/guiding-principles/ along with some insights from the team on what they mean and how they show up in their day to day. We hope they resonate with you and look forward to discussing them during your interview.

Championing Inclusion at WBD

Warner Bros. Discovery embraces the opportunity to build a workforce that reflects a wide array of perspectives, backgrounds and experiences. Being an equal opportunity employer means that we take seriously our responsibility to consider qualified candidates on the basis of merit, regardless of sex, gender identity, ethnicity, age, sexual orientation, religion or belief, marital status, pregnancy, parenthood, disability or any other category protected by law. If you’re a qualified candidate with a disability and you require adjustments or accommodations during the job application and/or recruitment process, please visit our accessibility page for instructions to submit your request.

Warner Bros. Discovery, a premier global media and entertainment company, offers audiences the world's most differentiated and complete portfolio of content, brands and franchises across television, film, streaming and gaming. The new company combines WarnerMedia's premium entertainment, sports and news assets with Discovery's leading non-fiction and international entertainment and sports businesses.