Lead Business Systems Analyst

Overview

How You’ll Make an Impact

At Epsilon, the Business Analysis Lead (Data Warehouse) role offers an outstanding chance to combine technical skill with client-facing duties. Data drives our excellence in digital media, distinguishing us from competitors. As a Lead Business Analyst, you will play a crucial role in our Engineering department. You will work directly with clients to collect data requirements, examine their data, and develop mapping rules for developers. You will also analyze and report data findings while offering ongoing support to internal teams. You will act as a trusted advisor, representing the Data-warehouse team and encouraging collaboration. In this role, you will lead technical prioritisation for custom solutions, facilitate sophisticated data discovery workshops, and promote enablement through documentation and training. Your duties also include advocating for risk prevention, data privacy, and security, alongside ongoing process improvement. Working from our London office at least four days a week ensures you stay closely coordinated with local market dynamics and support global initiatives.

What You’ll Achieve

• Lead and facilitate technical data discovery and requirements workshops with clients and internal collaborators; uncover implicit needs from non‑technical participants and translate them into implementable specifications.
• Analyze client data and build scalable integration and process streamlining solutions with strong consideration for privacy, security, and operational risk.
• Confidently handle basic client objections to sending first‑party data. Explain privacy controls, minimisation, and protection measures.
• Bring sophisticated privacy questions to legal or privacy teams when needed.
• Serve as the local market representative and main contact for blocking issues with Data Warehouse and Identity Analytics leadership.
• Advocate for local needs while aligning with the global strategy.
• Spearhead data onboarding expansion into new and emerging markets, coordinating multi-functional collaborators to remove blockers and define repeatable patterns.
• Challenge the status quo: identify, propose, and lead process and tooling improvements that improve efficiency, quality, and scale.
• Build, maintain, and present first‑party data trainings and enablement content as part of new‑hire and ongoing enablement programs for local market teams.
• Develop and update internal user documentation and training resources that cover the broader context (architecture, data flows, governance) to support scalability and effective communication.
• Advocate for clear RACI models across projects; provide constructive feedback and drive cross‑team development, accountability, and process enablement.
• Build and maintain positive relationships internally and with external partners to understand outstanding partnership needs and ensure successful outcomes.

Who You Are

What you’ll bring with you:

• 8+ years of experience in data onboarding, business systems analysis, data solutions engineering, or similar roles (or equivalent experience).
• Demonstrated experience prioritising technical solutions with presales or solution teams, and leading technical discovery workshops.
• Intermediate SQL skills and deep understanding of relational database build and data warehousing concepts/architecture.
• Familiar with ETL processes, file transfer methods, and production data onboarding pipelines.
• Comfortable working in Linux environments and handling terminal commands; familiarity with Python and Shell scripts is an advantage.
• Experience with data privacy frameworks and regulations (e.g., GDPR, CCPA) and applying privacy‑by‑design principles in solutioning.
• Excellent written and verbal communication, with experience crafting user documentation, trainings, and presentations at scale.
• Track record of influencing multi‑functional teams and advocating for process governance (RACI, SLAs, change control).

Why you might stand out from other talent:

• Experience within the AdTech industry.
• Experience with Python and Shell scripting.
• Experience working within agile engineering environments.
• Exposure to digital media data and downstream activation use cases.

Additional Information

When You Join Us, We’ll Create Something EPIC Together

Epsilon is a global data, technology and services company that powers the marketing and advertising ecosystem. For decades, we’ve provided marketers from the world’s leading brands the data, technology and services they need to engage consumers with 1 View, 1 Vision and 1 Voice.

Our pillars aren't just words. They’re how we show up every day:

• People centricity: We focus on employee well-being in an environment where colleagues truly care about each other.
• Collaboration: We work together, support one another, and collectively achieve goals.
• Growth: There are endless opportunities for growth through learning, development and career advancement.
• Innovation: We drive progress through cutting‑edge solutions and forward‑thinking approaches.
• Flexibility: We’ve created a balance between work and personal life, and we encourage adaptability to solve problems creatively.

Our values guide us to create value for our clients, our people and consumers:

• Act with integrity
• Work together to win together
• Innovate with purpose
• Respect all voices
• Empower with accountability

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