Data Analyst - OnePortal
Job description
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.
