Data Scientist
Value Creation Services - Performance Improvement & Operations | Data & Analytics Consultant / Senior Consultant
Athens
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What impact will you make?
#YourOpportunity
At Deloitte, the
spirit of the excellence
is part of our DNA. We strive to hire the
brightest minds from all around the globe
, allowing us to excel in both long-term strategic thinking and business improvement implementation as the undisputed global leader in professional services. We are committed to
delivering impacting results
for diverse private and public organization clients, linking our peerless talent in audit with
unrivalled opportunities for impact
– committing ourselves to sustainable growth and investment in our employees’ development and inclusion along the way.
Our culture is rooted in profound shared values. Our values guide us as we live our purpose to serve our clients with quality and distinction, inspire our people to work collaboratively to deliver value, actively contribute to society, and lead the profession by challenging ourselves to do what matters most.
Deloitte’s values are what unite us
across cultures and geographies, and ultimately help us earn the trust and respect of our people, clients, and society.
We believe that our differences enable us to
#makeanimpactthatmatters.
#YourRole
We are expanding our Value Creation Services practice and looking for a data-driven analytical professional to join our Performance Improvement and Operations team. This is a hands-on, delivery-focused role where you will work directly alongside senior advisors on engagements with PE-backed businesses and large organisations across key sectors including manufacturing, F&B, agribusiness, retail, utilities, and beyond.
Our VCS team supports private equity backed businesses and corporates who want to take an accelerated lens to performance improvement - delivering measurable improvements to their cash and EBITDA position. We have a pragmatic approach, helping businesses overcome operational and financial challenges by providing evidence-based insight that supports management to drive sustainable change.
As a Data & Analytics Consultant/Senior Consultant, you will be the analytical engine behind our diagnostic work. You will connect directly to client operational and financial systems, extract and process raw transactional data, and produce the structured outputs and dashboards that allow our senior team to identify improvement opportunities and present findings to clients and stakeholders. Your work turns complex, messy data into clear, actionable insight - and is central to the value we deliver on every engagement.
In a continuously evolving business environment where organisations need to make smart, quick and well-informed decisions based on quality analysis, you will have the opportunity to work closely with our Private Equity and corporate clients - bringing precision and analytical depth to the decisions that drive real operational and financial value.
#KeyResponsibilities
:
- Connect to client data sources:
Access operational and financial systems - ERP platforms, accounting software, and related databases - and extract transactional data relevant to the engagement, including sales records, purchase invoices, inventory movements, and cost transactions. - Prepare and clean data:
Transform raw, frequently messy client data into structured, analysis-ready datasets. Identify and resolve duplicate records, inconsistent coding, and missing fields. Document assumptions and data limitations clearly. - Develop and run SQL queries:
Write and troubleshoot SQL queries to extract and combine data across multiple tables and sources. Resolve discrepancies between query outputs and client-reported figures. - Automate data processing workflows:
Develop and maintain Python scripts (Pandas, NumPy) to automate data cleaning, transformation, and processing workflows. Build reusable scripts that can be adapted efficiently across different client data environments. - Build analytical outputs and dashboards:
Design and build PowerBI dashboards and structured analytical summaries from end to end. Outputs are built from scratch for each engagement based on the specific client data and scope. - Structure findings clearly:
Organise analytical outputs in a logical, presentation-ready format that allows the senior team to interpret and communicate results effectively to clients. - Build analytical frameworks:
Help build reusable analytical tools, processing templates, and standardised workflows that improve quality and efficiency across engagements. - Manage multiple workstreams:
Handle analytical tasks across concurrent client engagements, maintaining accuracy and meeting tight diagnostic timelines.
#WinningRequirements
- Bachelors’ Degree in Industrial or Mechanical Engineering, Mathematics, Statistics, or Computer Science;
- Master's degree in a relevant discipline is highly appreciated;
- Strong hands-on experience in Python, SQL, BI tools (Power BI, Tableau, etc.) and advanced Excel, including data extraction, preparation and visualization through dashboards and reports:
- SQL
- comfortable writing complex multi-table queries, extracting data from relational databases, and resolving discrepancies between query outputs and source system figures - Python (Pandas, NumPy)
- experience using Python for real-world data cleaning, transformation, and processing workflows; - Power BI
- able to build dashboards and reports from scratch including data modelling and DAX measures; - Advanced
Excel & Power Query - 3-5 years relevant experience in a consulting firm or an operations analytics function within a large organisation (i.e. manufacturing, F&B, FMCG, retail, utilities or a related sector);
- Excellent numeracy skills with keen attention to detail and the ability to absorb and analyse large amounts of data quickly;
- Very strong analytical skills and problem solving mindset are essential;
- Strong team player, able to take direction, ask thoughtful questions and collaborate effectively within fast-paced teams, demonstrating ownership and accountability for high-quality deliverables.
- Excellent written and verbal communication skills in English & Greek;
- Willingness to learn and grow within a fast-paced environment;
- Military obligations fulfilled where applicable.
#AboutDeloitte
Our services
Deloitte operates in Greece since 1975, as a member of one of the world’s largest professional services networks, Deloitte Touche Tohmatsu. With offices in Athens, Thessaloniki, Heraklion, Patras and Ioannina, Deloitte Greece employs more than 2,900 professionals.
After 50 years of successful and dynamic presence in the Greek market, we bring an unmatched breadth and depth of expertise across audit and assurance, technology & transformation, tax & legal and strategy, risk & transactions advisory services. Operating in a multidisciplinary model enables us to draw from a pool of world-class talent, identifying the ideal skillset for each project, and to collaborate across businesses, to solve the toughest, most challenging issues of our clients. It is with them that we have built a trusted relationship, by delivering innovative solutions and utilizing state-of-the-art tools and technologies across all industries- Consumer Products, Energy Resources & Industrials, Financial Services, Life Sciences & Health Care, Government & Public Services, Technology, Media & Telecommunications.
Our Purpose
Our purpose, “To make an impact that matters for our clients, our people and society “- defines who we are and what we stand for. This is not about size, it's about being the first choice. The first choice for the largest and most influential clients, and the first choice for the best talent.
Our values
At Deloitte we foster a collaborative culture where talented individuals can produce their best work. We value innovative thinking, diverse insights and a genuinely distinctive level of customer service through our expertise and professionalism.
We value difference, with respect at the heart of our inclusive culture.
Our talent experience
From day one at our firm, practitioners are part of a community. Our development and career progression framework will help them develop the skills and capabilities to succeed. The wellness of our people and the ability to offer agile working arrangements is at the centre of our unique talent experience. We create a workplace that encourages collaboration, creativity, inclusiveness to ensure our staff are supported, encouraged and feel a sense of purpose and meaning in what they do each day.
Sounds like the sort of role for you? Apply now.
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