A Software Engineer at Izertis plays a pivotal role in driving digital transformation for a diverse portfolio of clients, ranging from major private corporations to critical public administration bodies. As a technology consultancy, Izertis does not just build isolated applications; it designs, integrates, and maintains the core infrastructure and software systems that keep essential services running. Whether you are working on identity and access management (IAM) systems, optimizing complex network architectures, or developing custom software for government modernization projects, your work directly impacts how organizations operate and serve their users.

The nature of this role is highly dynamic and client-focused. Engineers at Izertis are frequently deployed directly to client environments or integrated into hybrid teams to solve immediate, high-stakes technical challenges. This means you will have the opportunity to work across various industries, adapt to different technology stacks, and take on projects with significant societal scale, such as national justice systems or defense administration networks. It is a career path that demands both technical versatility and strong consultative skills.

For a professional looking to maximize their technical exposure, Izertis offers a unique environment where your adaptability is your greatest asset. You will not be locked into a single product roadmap; instead, you will solve diverse architectural problems, navigate complex organizational structures, and directly witness the tangible business value generated by your technical solutions.

The interview questions you will encounter at Izertis are highly reflective of the specific client project or technical domain you are being considered for. Because the company hires for both specialized infrastructure roles and general software delivery, questions are designed to assess your practical troubleshooting abilities, domain knowledge, and client-readiness.

The following questions are compiled from real interview experiences to help you understand the patterns and topics you are most likely to face.

Technical & Infrastructure Domain

These questions assess your deep technical knowledge in specialized areas like networking, security protocols, and systems engineering, which are critical for infrastructure-focused roles at Izertis.

• How do you design and configure a secure Identity and Access Management (IAM) workflow for an enterprise client with legacy directory systems?

Preparing for an interview at Izertis requires a strategic shift from typical product-company preparation. Rather than focusing solely on abstract algorithmic puzzles, you must demonstrate your readiness to deliver immediate value to external clients and navigate complex project ecosystems.

To stand out, align your preparation with these core evaluation criteria:

Client-Ready Communication – You must prove that you can represent Izertis professionally in front of high-profile clients. This means translating complex technical concepts into clear business terms, actively listening to stakeholder needs, and demonstrating a diplomatic approach to conflict resolution.

Technical Versatility – While deep expertise in a specific stack is valuable, Izertis highly prizes engineers who can pivot. Show that you have a strong foundational understanding of software engineering and infrastructure principles, allowing you to pick up new tools, frameworks, and legacy systems rapidly.

Administrative & Process Compliance – Especially for public sector projects, compliance and attention to detail are critical. Show that you are comfortable following structured processes, documenting your work meticulously, and providing the necessary formal documentation required for public tenders.

The interview process at Izertis is highly decentralized and varies significantly depending on whether you are being hired for a general internal pool, a specific corporate client, or a public administration tender. Candidates generally experience one of two tracks: an ultra-fast client-matching process or a slower, tender-dependent evaluation.

For urgent client vacancies, the process can be incredibly rapid, sometimes concluding in less than a week with minimal technical testing. Conversely, if your profile is being submitted as part of a public bid (such as for justice or defense departments), the timeline is dictated by public administration bureaucracy, which can introduce significant delays.

The timeline above illustrates the standard progression from initial contact to onboarding. Candidates should interpret this as a flexible framework; if you are interviewing for an active, high-priority client project, the technical test and client review phases may be consolidated into a single, informal technical discussion to expedite your placement.

To succeed at Izertis, you must understand the specific competencies evaluated during the technical and management conversations. Depending on the exact role—such as Network Engineer, IAM Engineer, or general Software Engineer—your evaluators will focus on distinct technical pillars.

Infrastructure & Systems Engineering

For specialized engineering roles, the technical evaluation focuses heavily on your ability to design, secure, and maintain complex enterprise environments.

Be ready to go over:

• Identity & Access Management (IAM) – Single Sign-On (SSO) integrations, directory services (Active Directory, LDAP), and modern authentication protocols (SAML, OIDC, OAuth 2.0).
• Network Architecture – Enterprise routing, switching, VPN configurations, and hybrid cloud connectivity.
• Support & Troubleshooting – Systematic root-cause analysis for network outages, permission failures, and performance bottlenecks.

Example scenarios:

• Designing an IAM strategy for a client migrating from on-premise infrastructure to a hybrid cloud model.
• Troubleshooting a routing loop in a multi-site corporate network under time pressure.

Public Sector & Enterprise Delivery

When interviewing for projects within public administration (such as Spanish Justice or ISDEFE), evaluators look for candidates who can handle the rigid compliance and scale of government systems.

Be ready to go over:

• Legacy System Integration – Strategies for wrapping, migrating, or interfacing with older, highly sensitive databases and mainframe applications.
• Data Security & Compliance – Adherence to local and national data protection regulations (such as GDPR or national security frameworks).
• Rigorous Documentation – Writing clear technical specifications, system manuals, and compliance reports required by public administrators.

Example scenarios:

• Explaining how you would secure sensitive citizen data during a major database migration.
• Describing your approach to onboarding onto a massive, pre-existing codebase with outdated documentation.

Technical Adaptability & Autonomy

Because consulting environments can be unpredictable, hiring managers look for self-starters who do not require constant supervision to deliver high-quality code or infrastructure.

Be ready to go over:

• Rapid Upskilling – Your proven methodology for learning a new language, tool, or framework in days rather than weeks.
• Autonomy in Delivery – How you establish development standards and maintain high code quality when working on client sites with loose oversight.
• Scope Management – Identifying and managing "scope creep" from clients while maintaining a collaborative relationship.

Example scenarios:

• A scenario where you are assigned to a client project using a proprietary framework you have never seen, and you must deliver a feature within your first week.
• Handling a situation where the client's internal IT team is slow to grant you administrative access, stalling your development progress.