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Salary
≈ $39k – $69k per year (Estimated)
Location
Hybrid (London, United Kingdom)
Seniority
Middle · 3+ years exp

Confirmed on the employer's own hiring board on Oct 19, 2026. First seen by Alion on Oct 18, 2026. Publicis Groupe scores A on the Alion truth index.

Overview
Company
Impact
Profile match
Publicis Groupe is a French multinational advertising and communications group headquartered in Paris that provides creative, media, data, commerce and digital transformation services to brands around the world. Founded in 1926 by Marcel Bleustein-Blanchet, it spans creative agency networks, Publicis Media, the data marketing company Epsilon, Publicis Sapient and Publicis Health, with around 100,000 employees in more than 100 countries. It hires account managers, media planners and analysts, SEO and paid media specialists, designers and content producers, and software, data and quality engineers for Publicis Sapient.

Company Description

See how Epsilon powers connected marketing by unlocking the full potential of data and identity.

Overview

How You’ll Make an Impact

Our Client Integration Engineers are experienced client facing digital technologists. You will become responsible for providing technical solutions and strategies to help our clients achieve their digital marketing objectives. This includes integrating new clients onto the Epsilon platforms, managing the technical relationship with existing clients, driving automation initiatives and providing technical sales support. An Epsilon Client Integration Engineer is a unique hybrid role within our company that combines aspects of a web technologist, business analyst and solutions architect.Our Client Integration Engineers leverage their technical capabilities, commercial acumen and knowledge of the Epsilon platform to design and deliver actionable strategies and solutions. Reporting in the Director Client Integration you will also have the opportunity to collaborate across Sales, Account Management, Media Delivery, Product and Engineering teams to produce high quality results serving as a subject matter expert or facilitator as needed. This is a hybrid role based in London.

Responsibilities

What You’ll Achieve

  • You will be developing scripts, maintaining database tables, and processing data feeds to support new client initiatives Integrating our clients into the Epsilon system: designing, developing, implementing and testing technical solutions based on client and business requirements.
  • Conceptualizing integration strategies for complex, large-scale clients whilst providing on-going support & maintenance of existing clients
  • Identify and assist in developing enhancement opportunities and best practices across the enterprise through innovation, automation and knowledge sharing.
  • Work with internal and external cross teams globally, including engineering, analytics, account management, product management and sales
  • Oversee troubleshooting issues impacting the team and drive them to resolution

Qualifications

Who You Are

  • What you’ll bring with you:
    • Ideally 3+ years’ experience in a similar digital role
    • Have a strong knowledge of digital ad tagging, tracking scripts & pixels, and measurement
    • Have experience with DSPs, familiar with Ad Servers & understand SSPs, CDPs, and DMPs
    • Have proven experience troubleshooting discrepancies in impression, click, and conversion data
    • Can identify and resolve ad delivery, tracking, and reporting issues
    • Have experience with UTM parameters, URL structures, and query strings for campaign tracking
    • Are familiar with programmatic buying and real-time bidding (RTB) mechanics
    • Understands brand safety, viewability, and fraud detection technologies
    • Are passionate about problem-solving and using their analytical side
    • Are inquisitive and need to know why we are doing whatever we are doing!
    • Like to be organized - Time management and follow-through skills are second nature.
    • Possess excellent verbal and written communication skills and can tailor their communication style to the recipient.
    • Have advanced coding experience in JavaScript, SQL, HTML.
    • Love working in an energetic and engaging team environment.
    • Are intrigued by the digital industry, have a good understanding of online tracking technologies and the digital marketing landscape
    • Have experience in a solutions architect/engineer or otherwise relevant technical role in AdTech or similar.
  • Why you might stand out from other talent:
    • Bachelor’s degree in computer science, Management Information Systems (MIS), or equivalent experience.
    • Coding languages such as PHP, shell, python would be a nice to have.

Additional Information

When you join Epsilon, we’ll create something EPIC together. We’re a global leader in data and identity, with deep expertise in digital media, clean rooms, customer data platforms, loyalty and marketing services. Positioned at the center of Publicis Groupe, Epsilon helps brands deliver personalized experiences at scale and build lasting customer relationships by unlocking the full potential of data and identity. Epsilon operates in 30+ countries across EMEA, the Americas and APAC, with more than 8,000 employees.

Check out a few of these resources to learn more about what makes Epsilon so EPIC:

Our Culture: https://www.epsilon.com/us/about-us/our-culture-epsilon

Life at Epsilon: https://www.epsilon.com/us/about-us/epic-blog

Epsilon has five values that define our culture and guide us as we create value for our clients, our people and consumers. We seek candidates who align with our company values, demonstrate them and make them meaningful in their day-to-day work:

  • Act with integrity. We are transparent and have the courage to do the right thing.
  • Work together to win together. We believe collaboration is the catalyst that unlocks our full potential.
  • Innovate with purpose. We shape the market with big ideas that drive big outcomes.
  • Respect all voices. We embrace differences and foster a culture of connection and belonging.
  • Empower with accountability. We trust each other to own and deliver on common goals.

Because You Matter

We know that we have some of the brightest and most talented employees in the world, and we believe in rewarding them accordingly. If you work here, expect competitive compensation, a great benefits package and endless opportunities to advance your career.

We offer hybrid working opportunities, with our office space located in the Iconic Television Centre, White City.

As part of our dedication to enhance our inclusive and diverse workforce, Epsilon is committed to equal access to opportunity for people without regard to race, age, sex, disability, neurodiversity, sexual orientation, gender identity, pregnancy and parental, marriage and civil partnership or religion or belief. We are committed to providing reasonable adjustments for candidates in our application process.

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