Izertis Consultant interview questions & guide 2026

The questions you will face during the Izertis hiring process are designed to evaluate both your technical execution capabilities and your consultative approach. While the exact questions will depend on the specific business unit and senior leadership team you interview with, they consistently target your practical problem-solving skills and past project experiences.

Use the following categorized examples, compiled from real interview experiences, to guide your preparation.

Business Intelligence & Data Modeling

These questions evaluate your hands-on experience with data manipulation, data architecture, and reporting tools.

• How do you approach designing a robust data model within Power BI to support complex business reporting?

Preparing for an interview at Izertis requires a dual-track strategy: you must demonstrate sharp technical acumen while showcasing the soft skills necessary for client management. You are not just being evaluated as an execution resource, but as a consultant who can represent the company brand in front of key stakeholders.

To stand out, focus your preparation on the following key evaluation criteria:

Role-Related Knowledge – You must show a deep, practical understanding of data processes. This goes beyond knowing how to build a basic dashboard; you need to explain the "why" behind your data modeling decisions, your approach to ETL (Extract, Transform, Load) processes, and how you ensure data integrity.

Consultative Communication – Interviewers look for your ability to translate technical jargon into clear, business-oriented insights. You should be able to explain complex technical architectures in a way that non-technical business stakeholders can easily grasp and buy into.

Problem-Solving & Structure – When presented with hypothetical client scenarios, structure your thoughts logically. Explain your methodology step-by-step, starting with requirement gathering, moving through technical design, and ending with user adoption and training.

The interview process for a Consultant at Izertis is designed to be highly conversational, transparent, and focused on practical capabilities. Candidates typically experience a streamlined loop that balances cultural fit with technical verification. The company values a relaxed yet professional atmosphere during interviews, allowing you to showcase your true working style.

The process generally unfolds across the following stages:

• Initial HR Screening: A friendly introductory phone call to discuss your background, understand your motivations for joining Izertis, clarify salary expectations, and briefly assess your language skills and general technical knowledge.
• Technical & Hiring Manager Review: An in-depth discussion—either online or in-person at one of their regional offices (such as Bilbao, Madrid, or Gijón)—with an Area Manager, Commercial Director, or technical lead. This stage focuses heavily on your CV, your specific experience in Business Intelligence, and practical scenarios involving data modeling.

While the majority of candidates report a positive and highly engaging experience with polite, professional recruiters, there can occasionally be administrative inconsistencies or delays in communication depending on the regional office and current hiring volumes. Remaining proactive and maintaining polite follow-ups will serve you well.

The timeline above outlines the standard progression from your initial application to the final decision. Use this visual guide to pace your preparation, ensuring you allocate sufficient time to practice both your behavioral stories for the initial screen and your technical deep dives for the manager review.

To excel in the Izertis interview loop, you must understand the core competencies the hiring team evaluates. They want to ensure you can join a client project on day one and deliver value immediately.

Business Intelligence & Data Modeling

This is the technical anchor of the evaluation process for data-focused consulting roles. Your interviewers want to see that you possess strong foundational knowledge of data structures and optimization.

Be ready to go over:

• Power BI Modeling – Designing efficient relationships, managing cardinality (one-to-many, many-to-many), and understanding the impact of model design on report performance.
• Power Query & ETL – Techniques for cleaning, transforming, and merging datasets efficiently before they load into the model to ensure optimal performance.
• DAX Calculations – Writing clean, performant DAX measures and understanding evaluation contexts (filter context vs. row context).
• Advanced concepts (less common) – While tools like Tableau or AWS are occasionally referenced in the wider industry, Izertis interviews for this role tend to focus heavily on the Microsoft BI stack. Do not over-prepare for alternative ecosystems unless specifically requested.

Example scenarios:

• "Explain how you would resolve a performance issue in a Power BI report where visual rendering is taking too long due to underlying data structure issues."
• "Walk me through how you would use Power Query to clean and restructure a highly unformatted, nested Excel dataset for corporate reporting."

Consultative Background & CV Review

Your technical skills are only as valuable as your ability to apply them to real-world business challenges. This evaluation area focuses on your professional journey and client-facing skills.

Be ready to go over:

• Project Delivery Lifecycle – How you take a project from initial client discovery sessions through to deployment and final sign-off.
• Stakeholder Management – Managing expectations, handling scope creep, and communicating technical limitations to business leaders.
• Commercial Awareness – Understanding how your technical solutions impact the client's bottom line and help Izertis build long-term client relationships.

Example scenarios:

• "Describe a situation where a client requested a feature that was technically unfeasible or highly inefficient. How did you guide them toward a better solution?"
• "Walk us through a major BI project on your CV, focusing on the business problem you solved rather than just the tools you used."

As a Consultant at Izertis, your day-to-day responsibilities will vary depending on client needs, but they generally encompass several core functions:

• Client Discovery & Requirements Gathering: Collaborating directly with client stakeholders to understand their business challenges, identify data gaps, and define clear project requirements.
• Solution Architecture & Development: Designing and building robust data models, ETL pipelines, and interactive dashboards primarily utilizing Power BI and Power Query to deliver clear business insights.
• Quality Assurance & Performance Tuning: Testing data accuracy, validating business logic, and optimizing report performance to ensure high-speed delivery of business metrics.
• Stakeholder Enablement: Conducting training sessions, creating documentation, and guiding client teams to ensure high adoption rates of the delivered digital solutions.
• Cross-Functional Collaboration: Working closely with Izertis Commercial Directors, project managers, and other technical specialists to ensure projects are delivered on time, within scope, and aligned with broader strategic goals.

To be competitive for the Consultant position, you should align with the following profile:

• Technical Must-Haves:
  • Proven professional experience working with the Microsoft BI stack, with deep expertise in Power BI and Power Query.
  • Strong foundational knowledge of data warehousing concepts, relational databases, and data modeling best practices (e.g., dimensional modeling).
  • Proficiency in writing and optimizing SQL queries.
• Nice-to-Have Skills:
  • Experience with cloud platforms (particularly Microsoft Azure data services).
  • Familiarity with broader data governance, data quality frameworks, or advanced analytics.
• Soft Skills & Professional Background:
  • Strong communication and presentation skills, with the ability to explain technical concepts to non-technical stakeholders.
  • Fluency in Spanish and a strong working knowledge of English to support diverse client portfolios.
  • A proactive, self-starting mindset comfortable with navigating the ambiguity often present in client-facing consulting environments.

Q: What is the overall difficulty of the Consultant interview process at Izertis? A: Most candidates describe the process as highly accessible, ranging from very easy to average in difficulty. The technical questions focus on solid foundational principles of data modeling and BI rather than highly abstract algorithmic puzzles.

Q: Do I need to be an expert in multiple BI tools like Tableau or Qlik? A: No. Real interview data indicates that Izertis interviews for this role focus heavily on the Microsoft ecosystem (Power BI, Power Query). They rarely ask deep technical questions about Tableau, AWS, or alternative cloud data stacks unless the specific business unit requires it.

Q: What is the typical timeline for the hiring process? A: The process is generally fast-paced. Candidates often receive an initial call the same day they apply or within a week. The entire loop, consisting of two main stages, can often be completed within two to three weeks.

Q: How are remote and hybrid work models handled for Consultants? A: Izertis supports modern hybrid and remote working arrangements, though expectations can vary depending on client requirements, project scope, and your proximity to regional offices like Madrid, Bilbao, or Gijón.

• Prioritize the "Why" Over the "How": When discussing your technical work, do not just list the features of Power BI you used. Explain why you structured the data that way and how it solved a concrete business problem for your client.
• Prepare Your CV Stories: Be ready to discuss any project listed on your resume in deep detail. Your interviewers—particularly Area Managers and Commercial Directors—will pick specific projects and ask you to elaborate on your individual contribution.
• Brush Up on Power Query Best Practices: Since data transformation is a key focus area, review theoretical concepts of query folding, data type optimization, and efficient ETL design within Power Query.

• Align with the Consultative Mindset: Remember that as a consultant, you are a representative of Izertis. Display curiosity, active listening, and a client-first attitude throughout all your conversations.

Securing a Consultant role at Izertis offers an exciting opportunity to drive meaningful digital transformation projects across a wide variety of industries. Because the interview process focuses heavily on practical, real-world execution rather than theoretical puzzles, your best preparation strategy is to deeply analyze your own project history and refine how you communicate your technical decisions.

To maximize your chances of success, focus your final preparation on mastering the core principles of data modeling within Power BI, structuring clear narratives around your professional experience, and demonstrating a proactive, client-focused attitude.

The compensation insights above reflect typical market ranges for consulting professionals. Use this data to help guide your salary expectations conversations during your initial HR screen, ensuring your requirements are aligned with your experience level and the regional market standards. With focused preparation and a clear understanding of the evaluation areas, you are well-positioned to navigate the interview loop successfully. Good luck!