Senior Data Engineer

About Performics & OneSuite

Performics is the Performance Centre of Excellence within Publicis Groupe, delivering technology, data, and AI-driven marketing solutions for global brands. OneSuite is our unified marketing intelligence and automation platform powering agentic workflows, data processing, analytics services, and channel automation across Search, Social, Programmatic, Commerce, and Measurement.

Data engineering is foundational across OneSuite — providing the data pipelines that power campaign activation across Search, Social, Commerce, Programmatic, and Measurement.

About the Role

We are seeking a Senior Data Engineer to lead the design, development, and evolution of data pipelines across OneSuite.

This is a hands-on engineering role — you will write production-grade code, solve complex data engineering problems, shape pipeline patterns, and guide other engineers through technical influence.

Core Responsibilities

Data Engineering & Pipeline Development

•    Design and maintain data pipelines using PySpark and Databricks, following the medallion architecture (Bronze/Silver/Gold) for structured data transformation and quality.
•    Build and optimize ETL/ELT workflows that ingest, transform, and serve marketing performance data at scale.
•    Collaborate with analytics and data science teams to ensure clean, well-modeled, and accessible data assets across the lakehouse.
•    Implement data quality checks, schema enforcement, and lineage tracking across pipeline stages.

Hands-On Development

•    Write high-quality, maintainable, production-ready code.
•    Integrate with external APIs (marketing platforms, cloud services, internal microservices).
•    Build and maintain CI/CD pipelines and infrastructure-as-code environments.
•    Lead code reviews, mentor engineers, and ensure high engineering standards.

Performance, Reliability & Observability

•    Implement tracing, structured logging, metrics, dashboards, and alerting.
•    Optimize services for latency, concurrency, throughput, and cost efficiency.
•    Ensure system reliability through automated testing, load testing, error budgets, and resiliency strategies.
•    Partner with SRE to define SLIs/SLOs and improve platform-wide reliability.

Cross-Functional Collaboration

•    Work closely with product, data, and SRE teams on shared designs across campaign activation domains.
•    Align architecture decisions across teams to ensure consistency and maintainability.

Must Haves

• Proficiency with SQL and NoSQL databases (PostgreSQL, DynamoDB, Redis, MongoDB) and familiarity with lakehouse platforms.
• Experience with or strong willingness to work in PySpark and Databricks, including the medallion architecture (Bronze/Silver/Gold).
• Hands-on experience with Docker, Kubernetes, CloudFormation, and cloud platforms (AWS or GCP).
• Strong CI/CD experience using GitHub Actions, Argo, or similar tools.
• Deep knowledge of observability practices — logs, metrics, traces, performance analysis.
• Proven ability to write clean, testable, well-structured production code.

Nice to Have

• Experience with streaming or queuing systems (Kafka, Pub/Sub, SQS).
• Familiarity with AI/LLM systems and agentic workflow integration.
• Experience with Delta Lake, Unity Catalog, or other lakehouse governance and optimization tools.

Core Competencies

• Technical Expertise: You own data pipeline design, solving complex data engineering problems while defining reusable patterns that improve scalability, reliability, and developer velocity.
• Leadership: You lead through influence — mentoring engineers, guiding architectural decisions, establishing engineering standards, and elevating craftsmanship without direct people management.
• Product Impact: Your systems directly shape OneSuite's performance, availability, and functionality across campaign activation for Search, Social, Commerce, Programmatic, and Measurement.
• Innovation & Learning: You stay current with emerging architecture patterns, cloud-native technologies, and data platforms. You introduce pragmatic innovations that deliver measurable engineering and product value.
• Collaboration: You work across teams — aligning direction and ensuring platform cohesion across campaign activation domains. You communicate clearly, build consensus, and drive clarity in complex system discussions.

• WORK YOUR WORLD opportunity to work anywhere in the world, where there is a Publicis office, for up to 6 weeks a year.
• REFLECTION DAYS - Two additional days of paid leave to step away from your usual day-to-day work and create time to focus on your well-being and self-care.
• HELP@HAND BENEFITS 24/7 helpline to support you on a personal and professional level. Access to remote GPs, mental health support and CBT. Wellbeing content and lifestyle coaching.
• FAMILY FRIENDLY POLICIES We provide 26 weeks of full pay for the following family milestones: Maternity. Adoption, Surrogacy and Shared Parental Leave.
• FLEXIBLE WORKING, BANK HOLIDAY SWAP & BIRTHDAY DAY OFF You are entitled to an additional day off for your birthday, from your first day of employment.
• GREAT LOCAL DISCOUNTS This includes membership discounts with Soho Friends, local restaurants and retailers in Westfield White City and Television Centre.