Principal Solutions Consultant (Martech) in London

Join our high‐performing Customer Solutions team at Epsilon as a MarTech Solutions Consultant, Principal. At Epsilon we empower brands to make smarter decisions through data‐driven marketing and cutting‐edge technology. We are a leader in digital marketing, identity solutions, and customer experience, delivering impactful results across a range of industries. Our team is passionate about delivering tailored solutions that exceed customer expectations.

Key Responsibilities

• Lead the design and technical overview of Epsilon's comprehensive MarTech solutions, focusing on Loyalty and Technology products to meet client requirements.
• Engage clients in deep‐dive discussions, uncover technical complexities, and identify growth opportunities.
• Curate bespoke solutions that combine Epsilon's products to solve client needs.
• Develop and deliver customised platform demonstrations, focusing on the functional and technical workflow to prove capability and value to marketing and IT stakeholders.
• Own pre‐sales technical activities: produce RFI/RFP responses that showcase the technical capabilities of the Epsilon platform and illustrate appropriate data flows to support client growth.
• Act as a thought leader on the MarTech landscape, providing insights on the Loyalty/Technology space, and elevate the wider team through knowledge sharing.
• Collaborate closely with Epsilon teams to ensure delivered solutions are feasible and that client feedback informs future product roadmap.
• Design and present client‐specific Loyalty and CRM solution architectures, including integration overviews and data flow mapping.
• Lead client discovery calls, assess current MarTech stacks, business objectives, loyalty maturity, and data challenges to define high‐impact solution fits.
• Serve as the internal and external subject‐matter expert on Epsilon's Loyalty and CRM platforms, articulating capabilities, competitive advantages, and roadmap.
• Continuously analyse and optimise the solution design cycle, identifying process refinements to increase client retention.

Who You Are

Required skills:

• 8+ years in a technical client‐facing role such as Solutions Consulting, Pre‐Sales Engineering, or MarTech Architecture.
• Background in database marketing, identity management, CRM, loyalty, or digital media.
• Deep knowledge of tech stacks focused on CRM or loyalty platforms.
• Strong understanding of system integration techniques (API architecture, ETL/ELT principles, web services, cloud connectors).
• Experience with cloud platforms (GCP, AWS, Azure).
• Ability to document and present complex data models and system architectures clearly.
• Comfortable operating within large, complex sales cycles and presenting to technical teams, C‐xits, and non‐technical stakeholders.
• Knowledge of data privacy regulations (GDPR, CCPA) applicable to EMEA and US markets.

Nice‐to‐have:

• Experience leading design and implementation of loyalty platforms for medium and large enterprises.
• Proficiency in Python or SQL for proof‐of‐concept integrations.
• Experience facilitating technical discovery workshops and defining integration specifications.
• Expertise in information security principles for PII/PHI data handling.

Benefits & Culture

We offer competitive compensation, a robust benefits package, and hybrid working opportunities. Our office is located in the iconic Television Centre, White City, London. At Epsilon, we are committed to an inclusive and diverse workforce. We provide equal access to opportunity for candidates without regard to race, age, sex, disability, neurodiversity, sexual orientation, gender identity, pregnancy, marital status, religion, or belief. Reasonable adjustments are available during the application process. Values we champion include Integrity, Collaboration, Innovation, Respect, and Accountability. Employees are supported to own and deliver on common goals.

Why You Matter

We recognise talent and reward it appropriately. Expect competitive compensation, a comprehensive benefits package, and endless opportunities for career advancement.