
Urszula Sobieraj
Data and Analytics Professional
Salary / Daily rate
London, UK
Freelance, open to permanent contract
Skills
About me
Intro
Data and analytics professional with 6+ years of experience translating complex, high-volume data into commercial decisions for global clients across adtech, digital media, and marketing technology. Experienced across the full analytics lifecycle from SQL-driven reporting and dashboard automation to A/B testing, audience analysis, and executive-level data storytelling with a consistent track record of influencing budget allocation, campaign strategy, and business performance at senior stakeholder level. Equally comfortable working independently, embedded within cross-functional teams, or leading analytical workstreams end-to-end. Brings a commercially grounded, technically fluent approach to performance measurement, client advisory, and process improvement with the communication skills to make data accessible and actionable for any audience.
Work experience
Data Annotator (contract)
Outlier
Nov 2025 - Present
1 year
London, UK
Travel & Upskilling
Planned Career Break
May 2025 - Oct 2025
6 months
The World
– Completed a 6-month international travel sabbatical to broaden global perspectives and focus on personal and professional development. – Proactively expanded technical skill set through self-guided learning, focusing on emerging technologies in AI and data analysis. – Certifications & Training: (revision of the basics) Google Data Analytics Professional Certificate, Google AI Essentials, HarvardX CS50, and Canva Essentials. – Professional Workshops: Actively engaged in tech community webinars, covering modern vibe coding applications (Lovable) and building AI agents (LangChain, Ollama).
Senior Client Analytics Partner
StackAdapt
Apr 2022 - May 2025
3 years 2 months
London, UK
– Developed and delivered SQL-driven management reports and ThoughtSpot/Tableau dashboards to monitor cross-channel performance metrics—customer acquisition cost, conversion rates, revenue pipeline, and ROI—for high-value EMEA clients. – Analysed high-volume customer behaviour data across digital channels (Display, Native, Video, OTT, CTV, DOOH, FTA) using advanced statistical techniques (A/B Testing, Ad Effectiveness, CCA, Brand Lift, Creative Incrementality) to identify trends, issues, and growth opportunities. – Produced weekly and monthly executive summaries on campaign performance and commercial KPIs; guided senior stakeholders' decisions on budget allocation, pricing, and promotional tactics. – Led strategic roadmap discussions with internal and external stakeholders—aligning on KPIs and translating business requirements into data models, report specifications, and process workflows. – Prioritized EMEA workloads and enforced reporting controls, ensuring data accuracy and timeliness. – Mentored junior analysts in SQL best practices, dashboard automation, and commercial analysis methodologies—fostering a data-led decision-making mindset across the team. – Collaborated with Adobe Experience Cloud and Google Analytics 4 to cross-validate audience data and enrich commercial intelligence for client acquisition and retention strategies.
Senior Global Investment Analyst
Wavemaker
Jun 2019 - Apr 2022
2 years 11 months
London, UK
– Monitoring and analysing the international network of client's media buying performance and reporting this back to the client – Exposure to C-level strategy meetings and data-driven decision consulting – Day to day ownership of client accountability and audit deliveries, working with clients and local teams to ensure effective delivery of commitments – Management of key international client's value offer, creation, KPI setting, delivery and reporting – Assisting in development of key relationships with auditors – Training and supporting junior team members – Supporting with New Business Pitches
Consultant, Business Support & Reporting
Ila Pothecary
Mar 2019 - Apr 2022
3 years 2 months
Remote
– Developed and maintained financial forecasts, variance analysis, and operational metrics tracking dashboards using Power BI to support leadership reviews and decision-making. – Analysed commercial contracts and compliance requirements, contributing to risk mitigation and regulatory adherence. – Delivered actionable recommendations based on financial and operational data trends to improve commercial performance and customer engagement.
Shift Leader
JD Wetherspoon
May 2014 - May 2019
5 years 1 month
London, UK
Education
Warsaw University of Technology
BSc, Logistics & Technology of Road Transport
2016 - 2020
4 years 1 month
Warsaw School of Economics
BA, Management
2015 - 2018
3 years 1 month
Licenses & certifications
Canva Essentials
Issued: –
CS50
Issued: –
Google AI Essentials
Issued: –
Google Data Analytics Professional Certificate
Issued: –