Data Analyst - OnePortal

What You’ll Do

• Lead deep-dive analyses to uncover business trends, user behavior, and operational inefficiencies

• Translate data into clear narratives and visual stories for product, business, and technical stakeholders

• Define and maintain KPIs for specific product domains or journey

• Build and maintain dashboards and automated reports to monitor performance and identify trends

• Serve as the go-to analytics contact for business, product, and operations teams

• Turn open-ended business questions into testable hypotheses and structured problem-solving approaches

• Support A/B testing from design to interpretation

• Ensure accuracy, consistency, and trustworthiness across all reporting layers

• Audit data logic and pipelines, and flag anomalies and inconsistencies

• Partner with engineering teams to maintain data integrity

• Deliver timely and actionable insights to support strategic initiatives, product launches, campaign performance, and continuous optimization

• Prioritize findings by business impact and urgency

• Work closely with Data Engineers, PMs, and other Analysts to maintain consistency across metrics and improve decision-making

• Influence product and analytics roadmaps through recurring insight-driven recommendations

WHAT SKILLS WILL BE APPRECIATED?

Must-Have Skills

• Proficient in SQL, with experience querying large datasets and optimizing performance

• Skilled in data visualization tools (e.g., Tableau, Power BI, Metabase)

• Experience in Python or R for analysis and automation is a plus

• Strong understanding of product funnels, user journeys, and cohort analysis

• Familiarity with A/B testing methods and statistical evaluation

• Solid business acumen — you know how to turn numbers into actionable decisions

• Clear and confident communicator — able to present findings to both technical and non-technical audiences

• Detail-oriented with a commitment to data quality and governance

• Comfortable juggling multiple tasks in a fast-paced, agile environment

OUR OFFER FOR YOU

Be a part of T-Mobile’s digital transformation journey! We’re looking for a Data Analyst to join the One Portal team — a pan-European eCommerce solution for B2B customers. If you're passionate about turning raw data into powerful insights that drive decisions, this is your opportunity.