Daphne G.-Data & BI Engineer
Check rate
Experience
Data & BI Engineer
THEMA
- Established the company's data engineering and BI function as its first dedicated Data & BI hire, delivering reporting for HR, Finance, Procurement, Ticketing, Maintenance, Rolling Stock and Operations.
- Designed and built automated data pipelines in Azure Data Factory and Microsoft Fabric using SQL and PySpark, with incremental loading, validation, reconciliation and data quality controls.
- Developed passenger-movement and ticketing analytics with millions of validation records, integrated with sales and payment data.
- Delivered maintenance dashboards based on SAP data, and operational reporting on train alarms and the availability of trains, lifts, escalators, ticketing equipment and gates.
- Automated departmental data collection and approval workflows using Power Apps, Power Automate and SharePoint.
- Designed and implemented a central BI portal with multi-level Row-Level Security, and manage cloud and BI licensing costs.
BI & Analytics Lead
Deloitte
- Research and R&D on Fabric adoption and migration from Alteryx, assessing costs, proposing a migration plan and running POCs for leadership meetings.
- Undertook the design and project management of a new data platform for internal and external clients for self-service analytics and data automation; designed mockups and gathered feedback from stakeholders.
- Designed and delivered a workforce analytics dashboard for a transport and logistics client, combining working hours, leave, activity and payroll costs to monitor staffing, utilisation and labour costs.
BI & Analytics Assistant Lead
Deloitte
- Led and actively contributed to the development of 10 comprehensive Power BI reports for a multinational client, integrating data across all business functions within three months.
- Designed and delivered a transactional analytics solution with more than 25 dimensions and 30 KPIs, enabling drill-down from executive summaries to individual transactions and including Price–Volume–Mix analysis to explain revenue changes.
- Designed a real estate analytics dashboard providing in-depth insights into property portfolios, taxes, expenses and investment opportunities.
- Enabled the in-house HR team to make better use of its data by automating data transformation and developing reports that track the effectiveness of learning and development initiatives.
- Trained over 50 employees in Power BI through regular workshops over two years, promoting data literacy and self-service reporting.
- Developed internal reports for monitoring project progress, resource allocation and budgets, providing insights for partners and senior leadership
Senior Analytics Consultant
Deloitte
- Developed interactive financial dashboards for clients in merchandising, construction, food and hospitality.
- Created an analytics product for myDATA (Greek tax authority e-invoicing) using SQL stored procedures to query data instantly on dashboard filter selection, showing discrepancies, pending invoices and summary views, with notifications on issues.
- Provided monthly production cost analysis and insights for four clients, and supported 11 clients with automated HR and payroll analytics.
- Led the implementation of 15+ data visualisation dashboards across sales, taxation, accounting and shipping.
- Contributed to the team’s dashboard methodology and Centre of Excellence, setting visualisation best practices and consistent quality across projects.
Analytics Consultant
Deloitte
- Led an analytics project that gave more than 80 clients automated tax reports through interactive dashboards.
Analytics Specialist / Data Analyst
Baresquare
- Generated comprehensive reports, conducted data analysis on consumer behaviour and marketing trends, and enhanced data collection and reporting processes to drive actionable insights and operational efficiency.
- Delivered nearly 18 monthly reports and over 65 weekly reports to various stakeholders.
- Efficiently managed more than 10 ad hoc data analysis requests per week from 7 different regions, consistently meeting tight deadlines while delivering accurate and timely insights.
- Supported a multinational corporate client by delivering tailored data extracts and analysis, enabling them to develop a more effective strategy for website migration and content improvement.
- Assisted the organisation in developing a centralised and customised customer support communication strategy, improving efficiency and enhancing customer experience.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Professional Services, Information Technology, Real Estate, Construction, Food and Beverage, and Government and Administration.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Business Intelligence, Information Technology, Product Development, Customer Service, Marketing, and Finance.
Summary
Data & BI Engineer with nearly 10 years of experience in business intelligence, analytics and data engineering. I combine hands-on technical work, from data pipelines and models to dashboards, with experience leading BI projects and teams across finance, tax, HR, payroll, sales, production and operations. I care about reliable data, clear visual design and automating manual work, so that people can spend their time on analysis rather than on preparing data.
Skills
Data Engineering & Etl / Elt
Data Visualisation & Dashboards
Data Modelling
Data Quality & Validation
Process Automation
Project & Team Leadership
Stakeholder Management
Training & Mentoring
Microsoft Fabric
Azure Data Factory & Synapse
Sql, Pyspark & Python
Power Bi & Tableau
Qlik Sense
Alteryx
Power Apps & Power Automate
Sharepoint & Excel
Figma
Languages
Education
University of Macedonia
MSc Applied Informatics · Applied Informatics · Thessaloniki, Greece
Aston University
MSc Business Analytics · Business Analytics · Birmingham, United Kingdom
University of Macedonia
BSc Business Administration · Business Administration · Thessaloniki, Greece
Certifications & licenses
Alteryx Designer Core
Azure Data Fundamentals
Fabric Analytics Engineer Associate
Fabric Data Engineer Associate
Power BI Data Analyst Associate
Tableau Data Analyst
Tableau Desktop Specialist
Statistics
Experience
Global experience
Expertise
Qualifications
Frequently asked questions
Have questions? Find more information here.
Daphne is based in Thessaloniki, Greece and prefers 100% remote projects.
Daphne speaks the following languages: Greek (Native), English (Advanced).
Daphne has at least 8 years of experience. During this time, Daphne has worked in at least 6 different roles and for 3 different companies. The average length of individual experience is 1 year and 5 months. Note that Daphne may not have shared all experience and actually has more experience.
Based on recent experience, Daphne would be well-suited for roles such as: Data & BI Engineer, BI & Analytics Lead, BI & Analytics Assistant Lead.
Daphne's most recent position is Data & BI Engineer at THEMA.
In recent years, Daphne has worked for THEMA and Deloitte.
Daphne is most experienced in industries like Professional Services, Information Technology, and Real Estate. Daphne also has some experience in Construction, Food and Beverage, and Government and Administration.
Daphne is most experienced in business areas like Business Intelligence, Information Technology, and Product Development. Daphne also has some experience in Customer Service, Marketing, and Finance.
Daphne has recently worked in industries like Professional Services, Real Estate, and Construction.
Daphne has recently worked in business areas like Business Intelligence, Information Technology, and Product Development.
Daphne holds a Master in Applied Informatics from University of Macedonia, a Master in Business Analytics from Aston University and a Bachelor in Business Administration from University of Macedonia.
Daphne has 7 certificates. Among them, these include: Alteryx Designer Core, Azure Data Fundamentals, and Fabric Analytics Engineer Associate.
Daphne is immediately available part-time for suitable projects.
Daily rate distribution
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Average rates for similar positions
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The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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