At a Glance
- Tasks: Shape backend architecture and lead data-driven projects for a cutting-edge marketing platform.
- Company: Join Publicis Groupe, a leader in tech-driven marketing solutions.
- Benefits: Enjoy competitive perks like private medical cover, pension, and flexible work arrangements.
- Other info: Inclusive culture that values diverse backgrounds and promotes career growth.
- Why this job: Make a real impact with AI and innovative tech in a collaborative environment.
- Qualifications: Expertise in Python, AWS, and data engineering required; leadership skills a plus.
The predicted salary is between 70000 - 90000 € per year.
Performics is the Performance Centre of Excellence within Publicis Groupe, building technology, data and AI-driven marketing solutions for global brands. This Principal Backend Engineer role is a hands‑on, principal-level individual contributor position shaping the backend and data foundation behind OneSuite, our unified marketing intelligence and automation platform. You’ll set technical direction across data products and platform integration, write production‑grade Python, and lead high-impact architectural decisions that make complex marketing data dependable, secure and usable across clients. A key focus is enabling AI‑assisted analyst workflows, including agents built with the Claude Agent SDK, so teams can answer questions, surface issues and act on campaign opportunities with confidence.
Responsibilities
- Own backend and data architecture across pipelines, connector systems, platform APIs, agent/tool runtimes, CLIs and downstream product surfaces.
- Define durable domain boundaries and data contracts between warehouse outputs, operational stores, platform APIs, agent tools and user workflows.
- Lead the evolution of Databricks medallion pipelines (ingestion, normalisation and curated outputs for analytics and product use cases).
- Improve data quality and governance: schema enforcement, lineage, documentation and lakehouse‑to‑operational‑store sync for consumer‑facing data.
- Architect Python backend services on AWS serverless paths, including authentication and tenant‑scoped access patterns.
- Shape how capabilities are exposed through OneSuite (streaming workflows, tool permissions, MCP integrations and stable CLI/API/MCP contracts).
- Set engineering standards (testing, CI/CD, deployment safety, observability) and mentor senior engineers through reviews, pairing and clear written guidance.
Qualifications
- Demonstrable experience in senior backend, data platform or distributed systems engineering roles, with principal‑level ownership across multiple services or teams.
- Expert Python backend engineering (API design, service boundaries, async/concurrent systems) plus strong SQL and modern testing practices.
- Hands‑on Databricks / PySpark experience and lakehouse/medallion architecture (or equivalent large‑scale data pipeline experience).
- Strong AWS serverless background (Lambda, API Gateway, S3, DynamoDB, IAM) with infrastructure‑as‑code (e.g., CloudFormation/SAM).
- Deep understanding of multi‑tenant SaaS design, authN/authZ, tenant isolation, secrets management and operational security.
- Experience designing stable data contracts and CLI/API/MCP contracts, including schema evolution and consumer‑facing data models.
- Proven technical leadership through mentoring, architecture decisions, code review and clear trade‑off communication (without relying on direct authority).
Benefits
Publicis Media offers a wide range of benefits to support our employees. Full details are shared when you join, but highlights include core benefits such as Pension, Life Assurance, and Private Medical cover, alongside enhanced policies like Reflection Days and Shared Parental Leave. You’ll also have access to a range of additional initiatives, including:
Publicis Groupe works primarily from the office or our clients' office four days per week.
EEO Statement
Publicis Media is an equal opportunities employer. We welcome and encourage applications from people of all backgrounds, and do not discriminate on the basis of race, ethnicity, nationality, religion or belief, disability, age, citizenship, relationship status, sexual orientation, gender identity, or any other protected characteristic. We are committed to providing a fair, accessible, and inclusive recruitment process. If you have any access needs - for example, related to disability, neurodivergence, or a health condition - please let us know. We’ll work with you to ensure the process works for you. Sharing this information will never impact your application. Guided by our values, we listen with empathy, uplift each other, take responsibility, and embrace change - building a culture where everyone feels seen, respected, and genuinely included.
Principle Backend Engineer employer: Publicisgroupe
At Performics, a part of Publicis Groupe, we pride ourselves on being an exceptional employer that fosters a collaborative and inclusive work culture. As a Principal Backend Engineer, you'll not only have the opportunity to shape cutting-edge technology solutions but also benefit from a comprehensive range of perks including enhanced parental leave, reflection days, and a commitment to employee growth through mentorship and technical leadership. Our focus on diversity and inclusion ensures that every voice is heard, making it a truly rewarding environment for innovative thinkers.
StudySmarter Expert Advice🤫
We think this is how you could land Principle Backend Engineer
✨Tip Number 1
Network like a pro! Reach out to folks in your industry on LinkedIn or at meetups. A friendly chat can lead to opportunities that aren’t even advertised yet.
✨Tip Number 2
Show off your skills! Create a portfolio or GitHub repo showcasing your best projects. This gives potential employers a taste of what you can do, especially with Python and backend systems.
✨Tip Number 3
Prepare for those interviews! Brush up on common backend engineering questions and be ready to discuss your past experiences. We want to see how you think and solve problems.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are proactive!
We think you need these skills to ace Principle Backend Engineer
Some tips for your application 🫡
Tailor Your Application:Make sure to customise your CV and cover letter for the Principal Backend Engineer role. Highlight your experience with Python, AWS, and data architecture, as these are key areas we’re looking for.
Showcase Your Technical Skills:Don’t just list your skills; demonstrate them! Include specific examples of projects where you’ve used Python, Databricks, or built serverless applications. We want to see how you’ve tackled challenges in the past.
Be Clear and Concise:When writing your application, keep it straightforward. Use clear language and avoid jargon unless necessary. We appreciate a well-structured application that gets straight to the point.
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands and shows us you’re serious about joining our team!
How to prepare for a job interview at Publicisgroupe
✨Know Your Tech Inside Out
Make sure you’re well-versed in Python, AWS serverless architecture, and Databricks. Brush up on your API design skills and be ready to discuss how you've implemented these technologies in past projects. This will show that you can hit the ground running.
✨Showcase Your Leadership Skills
Prepare examples of how you've mentored others or led architectural decisions in previous roles. Highlight your ability to communicate complex ideas clearly and how you've influenced teams without relying on authority. This is key for a Principal Backend Engineer.
✨Understand the Business Context
Familiarise yourself with Performics and its role within Publicis Groupe. Understand their marketing solutions and how backend engineering supports these initiatives. This knowledge will help you align your answers with their business goals during the interview.
✨Prepare for Scenario-Based Questions
Expect questions that ask you to solve real-world problems related to data architecture and backend services. Practice articulating your thought process and decision-making criteria. This will demonstrate your analytical skills and technical expertise effectively.
