Lead Client Integration Engineer in London

How You’ll Make an Impact

At Epsilon, our Platform Delivery teams are essential to maintaining the reliability, stability, and flawless functioning of our production systems and offerings. Our dedication to excellence ensures that our customer support is second to none, crafting a "center of excellence" for comprehensive service delivery support.

Your role will be integral in guaranteeing smooth user transitions and continuous happiness with our technology platform. By providing expert onboarding support and ongoing assistance, you will improve user engagement, overcome technical challenges, and passionately advocate for user needs.

As a Client Integration Engineer, you will play a key role in delivering technical solutions and maintaining relationships with our Retail Media Network (RMN) retailer clients. You will act as a link between clients and our internal Product and R&D teams. You will lead integrations and handle post-launch issue resolution. Employ your technical skills and RMN platform knowledge to build and deliver actionable strategies and solutions.

Responsibilities

• Lead new client integrations from a technical perspective.
• Own the technical relationship for clients post-launch, aligned with their Tier.
• Act as the primary liaison during technical integrations and secondary contact for fixing and debugging.
• Support the Client Management team when up-sell opportunities are identified.
• Field and champion new Feature Requests submitted by retailers.
• Coordinate with internal Product and R&D teams to identify short-term workarounds and long-term scalable solutions.
• Implement a global integration strategy aligned with the organization’s goals.
• Identify integration opportunities, assess feasibility and impact, and build a roadmap for implementation.
• Allocate and manage resources and technology to support integration initiatives, ensuring efficient utilization.
• Collaborate with multi-functional teams (Sales, Product, Customer Integrations, Platform, Engineering) to ensure seamless integration of systems, processes, and workflows.
• Champion communication and alignment among various partners.

Operational Practices

• Uphold operational practices that support a future‑fit model.
• Maintain operational integrity across all production environments.
• Lead the service transition into the Platform Operations team for technical client support post‑launch.
• Standardize prioritization and implementation documentation collected by Client Integrations, Solutions, and Onboarding teams to guarantee smooth handoffs.

System Reliability

• Collaborate with Engineering, Product, Delivery, and Security teams to ensure production/system reliability.
• Align with Product and Engineering to understand how feature development impacts overall system performance and customer experience.

Product Knowledge

• Stay ahead of Epsilon RMN product suite features, improvements, and roadmap.
• Keep informed about industry trends in retail media, ad‑tech, and advertising.
• Maintain a high‑level understanding of the Epsilon system components: Reporting, Ad Serving, API Integration, Product Catalog, Ad Placements.
• Possess a solid technical understanding of Epsilon Onsite and Offsite platforms, toolsets, and partner systems.

Team Membership

• Act in the best interest of both the customer and the team at all times.
• Develop team cohesion and build strong multi‑functional relationships.
• Work with internal delivery groups to guarantee high‑quality customer experience and efficient case resolution.

Process Improvement and Simplification

• Work together with the VP of Platform Operations, VP Pre‑Sales, and VP Client Integrations to identify and carry out process simplification strategies.
• Proactively find opportunities to improve and simplify overall technology solutions.
• Work jointly with the VP of Platform Operations to develop the "Implementation and Integration Playbook" aimed at maintaining consistent retailer integration globally from technical and project management angles.

Qualifications

Who You Are

• Demonstrated ability in technical roles within business‑to‑business, large/strategic customer segments.
• Consistent record of achievements and expertise in similar roles.

Technical Proficiency

• Strong understanding of integration technologies, APIs, data exchange protocols, and cloud‑based systems.
• Intermediate expertise in web technologies and scripting languages, including JavaScript, Shell, Python, HTML, SQL.
• Experience integrating software systems through APIs.

Global Business Insight

• Understanding of global business operations and cultural nuances, especially in diverse markets.

Contract and Service Management

• Experience leading commercial technology contracts, technical service‑level agreements (SLAs), and critical metrics.
• Proficiency in ITIL or similar service delivery methodologies.

Communication, Planning, and Coordination

• Strong planning and problem‑solving skills with a focus on innovation and process improvement.
• Strong communication skills—effective in engaging audiences with technical and non‑technical backgrounds.
• Proven ability to collaborate with internal and external partners and manage organizational change related to customer integrations.

Essential Skills & Experience

• Experience in Advertising Technology.
• Proficiency in project management methodologies and tools to coordinate complex integration projects.
• Hands‑on experience with Google Cloud Technologies: Big Query, Google Cloud Storage, Pub/Sub, Kubernetes.

Education

• Bachelor’s degree or higher in Computer Science, Engineering, or a related field — or equivalent practical experience.

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. 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 maternity, marriage and civil partnership or religion or belief. We are committed to providing reasonable adjustments for candidates in our application process.