Lead Client Integration Engineer (German Speaking)

Epsilon; Greater London; On-site; GBP 50,000 - 70,000; Full time

Job summary

Epsilon is seeking a Client Integration Specialist with fluency in German to join our Platform Delivery team in Greater London. Your role includes leading technical integrations, maintaining client relationships post-launch, and supporting internal teams in project management and feature implementations.

The ideal candidate will have a solid technical background in integration technologies, experience working with APIs, and be proficient in project management to ensure seamless client onboarding and ongoing support.

Qualifications

• Demonstrated ability in technical roles within B2B customer segments.
• Strong understanding of integration technologies and cloud systems.
• Experience integrating software systems through APIs.

Responsibilities

• Lead new client integrations from a technical perspective.
• Act as the primary liaison during technical integrations.
• Support the Client Management team when upsell opportunities arise.

Skills

Technical roles in B2B

Integration technologies and APIs

Web technologies and scripting languages

Collaboration with partners

Education

Bachelor’s degree in Computer Science or Engineering

Tools

Google Cloud Technologies

Project management tools

Job description

Client Integration Specialist (German Speaking)

At Epsilon, our Platform Delivery teams are essential to maintaining the reliability, stability, and flawless functioning of our production systems and offerings. Your role will be integral in guaranteeing smooth user transitions and continuous engagement 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.

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 as the secondary contact for fixing and debugging.
• Support the Client Management team when upsell 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.
• 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.
• 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.
• 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 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.
• 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.
• 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.
• Help develop the "Implementation and Integration Playbook" aimed at maintaining consistent retailer integration globally from technical and project management angles.

Qualifications

• Demonstrated ability in technical roles within business‑to‑business, large/strategic customer segments.
• 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.
• Understanding of global business operations and cultural nuances, especially in diverse markets.
• Experience leading commercial technology contracts, technical service‑level agreements (SLAs), and critical metrics.
• Proficiency in ITIL or similar service delivery methodologies.
• 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: BigQuery, Google Cloud Storage, Pub/Sub, Kubernetes.

Education

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

Legal and Diversity Statement

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.