Value Creation Services – Data and Analytics Consultant / Senior Consultant - Performance Improvement and Operations
About the job
- A Bachelor's degree in Industrial or Mechanical Engineering, Mathematics, Statistics, or Computer Science is required.
- Strong hands-on experience with Python, SQL, business intelligence tools such as Power BI or Tableau, and advanced Excel is required, including data extraction, preparation, and visualization through dashboards and reports.
- Ability to write complex multi-table SQL queries, extract data from relational databases, and resolve discrepancies between query outputs and source-system figures is required.
- Experience using Python, Pandas, and NumPy for real-world data cleaning, transformation, and processing workflows is required.
- Ability to build Power BI dashboards and reports from scratch, including data modelling and DAX measures, is required.
- Advanced Excel and Power Query skills are required.
- Three to five years of relevant experience in a consulting firm or an operations analytics function within a large organization, such as manufacturing, food and beverage, fast-moving consumer goods, retail, utilities, or a related sector, is required.
- Strong numeracy, attention to detail, and the ability to absorb and analyze large amounts of data quickly are required.
- Strong analytical and problem-solving skills are required.
- Ability to take direction, ask thoughtful questions, collaborate effectively in fast-paced teams, and demonstrate ownership and accountability for high-quality deliverables is required.
- Excellent written and verbal communication skills in English and Greek are required.
- Willingness to learn and grow in a fast-paced environment is required.
- Military obligations must be fulfilled where applicable.
- Connect to client operational and financial systems, including enterprise resource planning platforms, accounting software, and related databases, and extract engagement-relevant transactional data such as sales records, purchase invoices, inventory movements, and cost transactions.
- Transform raw client data into structured, analysis-ready datasets; identify and resolve duplicate records, inconsistent coding, and missing fields; and clearly document assumptions and data limitations.
- Write and troubleshoot SQL queries to extract and combine data across multiple tables and sources, and resolve discrepancies between query outputs and client-reported figures.
- Develop and maintain Python scripts using Pandas and NumPy to automate data cleaning, transformation, and processing workflows, and build reusable scripts adaptable to different client data environments.
- Design and build Power BI dashboards and structured analytical summaries from end to end, tailored to each engagement's client data and scope.
- Organize analytical outputs in a logical, presentation-ready format so senior team members can interpret and communicate results effectively to clients.
- Help build reusable analytical tools, processing templates, and standardized workflows that improve quality and efficiency across engagements.
- Handle analytical tasks across concurrent client engagements while maintaining accuracy and meeting tight diagnostic timelines.
- A Master's degree in a relevant discipline is highly appreciated.
About the company
Deloitte audits companies and advises businesses and governments on tax, technology, and risk, and it is one of the Big Four, the world's four largest accounting firms. In 1849 its founder became the first independent auditor of a public company, Britain's Great Western Railway. Its auditors check companies' financial reports for errors and fraud before investors rely on them, while its consultants design strategy, install business software, and defend clients against cyberattacks. Clients pay fees for each audit or project, and each country's Deloitte firm is a separate business owned by its local partners. Deloitte was founded in London in 1845 and is based in New York.
Company Size
10,001+
Company Stage
Late Stage VC
Total Funding
$17.1M
Headquarters
Madrid, Spain
Founded
1845
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Simplify's Take
What believers are saying
- Growth keeps hiring going: revenue rose 5.7% to $74.5 billion and staff neared 500,000 in the year to May 2026.
- AI is part of the job: in October 2025, Deloitte opened the Claude assistant to 470,000 people, Anthropic's largest rollout.
- Making partner pays off: Deloitte UK's 784 equity partners averaged £1.125 million in profit in the year to May 2026.
What critics are saying
- Tech consulting is lagging: it grew 2.5% in the year to May 2026, the slowest of Deloitte's four businesses.
- Back-office benefits are shrinking: Deloitte US will halve parental leave to 8 weeks for internal staff in January 2027.
- Federal work brings scrutiny: Deloitte agreed to pay $21.5 million in August 2026 over claims diversity targets swayed promotions.
What makes Deloitte unique
- Deloitte is the biggest Big Four accounting firm: fiscal 2025 revenue of $70.5 billion beat PwC's $56.9 billion.
- Consulting runs deeper here: Deloitte kept its consultants in 2003 after PwC, EY, and KPMG sold or spun off theirs.
- Deloitte leads cyber consulting: it took 32% of worldwide security consulting revenue in 2025, research firm Gartner says.
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Benefits
Professional Development Budget
Hybrid Work Options
Company News
Business Insider convened 15 HR and C-suite leaders in Davos to discuss how AI is reshaping hiring and talent pipelines. The roundtable, presented by Indeed, revealed growing concerns about entry-level positions and skills assessment. Deloitte's Elizabeth Faber emphasised maintaining a "human-led, technology-powered" approach whilst carefully navigating reduced junior hiring. TCW's Melissa Stolfi noted her firm has downsized its analyst class but maintains a pyramid structure to preserve apprenticeship culture and future leadership pipelines. Indeed's chief economist Svenja Gudell warned that whilst tech employers now demand five-plus years' experience, this creates future talent shortages if junior hiring continues declining. Salesforce's Nathalie Scardino said her company receives two million applications annually and has shifted focus from years of experience to learning aptitude. Manpower Group's Becky Frankiewicz noted AI can process candidates faster whilst reducing bias, potentially unlocking opportunities beyond traditional qualifications.
Deloitte plans to hire 50,000 employees in India and is evaluating Mangaluru, Karnataka, as a potential new location, according to South Asia CEO Romal Shetty. The company currently employs 140,000 people in India, representing one in four Deloitte employees globally. Shetty said India hosts 50% of all global capability centres worldwide, with significant growth potential in Tier II and Tier III cities. He proposed creating digital economic zones integrating GCCs, GPU-based data centres, startups and academic institutions to accelerate expansion. The CEO called for streamlining GCC setup processes from six months to two weeks, whilst acknowledging infrastructure constraints around energy and water for data centres. Shetty noted Mangaluru offers advantages including talent availability and real estate, adding the company's presence there is a matter of timing.
Deloitte has invested in Kihomac to enhance U.S. drone manufacturing, aiming to strengthen national security and supply chains. This investment will allow Kihomac, a veteran-owned company, to expand production in Utah and mass-produce drones for U.S. government agencies and businesses. Deloitte's support will create manufacturing jobs and secure the supply chain for American customers.
Deloitte has acquired 100% of Virtus Partners, founded by Gonzalo and Marcelo Larraguibel, to enhance its strategic consulting business in Chile. This acquisition aims to offer comprehensive solutions from strategy design to execution. Deloitte's CEO, Christian Durán, emphasized the significance of this move in strengthening their market position. The merger combines Deloitte's global capabilities with Virtus Partners' local expertise, offering a unique strategic consulting platform in Chile.
Deloitte Canada has acquired Toronto-based fintech firm Allevar, enhancing its capabilities in regulatory compliance and technology solutions. Allevar specializes in fraud management, AML, payment systems, and KYC regulations, crucial for Canadian banks and the financial services industry. Allevar's leadership, including CEO Dan Wood, will join Deloitte's Regulatory Risk practice. This acquisition aligns with Deloitte's strategy for growth in the digital and AI age.