Tableau Platform & Business Intelligence… at COSMOTE… · Hungary

Telekom HBS, part of the Telekom Group, is an ICT Systems Integrator offering a comprehensive suite of ICT Solutions and Services.

Telekom HBS, specializes in delivering ICT Services in areas such as Cloud, Data Centre operations, Networking, Cybersecurity, BI and Data Warehouse, Big Data, Service Desk, Proactive Monitoring, Operations and Support, Service Management, Project and Programme Management, and Professional Services. We are seeking an Tableau Platform & Business Intelligence Engineer to join our team and be responsible for the following tasks:

Tableau Platform Administration and Lifecycle Management

• Administer Tableau Server sites, projects, users, groups, permissions, licenses, ownership, schedules, subscriptions, extracts, and published content.
• Prepare and maintain platform lifecycle plans, including upgrade readiness, dependency checks, test coordination, implementation support, and post-upgrade validation.
• Assess and implement platform configuration or presentation changes, subject to security, architecture, licensing, and operational approval.

BI Analysis, Dashboard Development and Enhancement

• Analyze business requests and produce requirements, solution designs, prototypes, dashboards, reports, and enhancements.
• Develop and maintain Tableau workbooks and data sources using appropriate visualization, performance, usability, and accessibility practices.
• Provide stakeholder review support, business validation, demonstrations, user guidance, and concise progress reporting.

Production Operations, Incident Resolution and Refresh Improvement

• Monitor report and extract refreshes and investigate failures, stale data, broken connections, subscription issues, and flow execution problems.
• Troubleshoot Tableau Prep flows and source-to-report refresh chains, including sequencing and dependencies across files, databases, cloud sources, and published data sources.
• Recommend and implement pragmatic improvements that reduce manual refresh activities and improve reliability, maintainability, and supportability.

Access, Licensing, Security and Documentation

• Process and document service requests related to access, licenses, groups, permissions, sites, projects, and report availability in accordance with approved procedures.
• Produce and maintain platform inventories, usage and license reports, operating procedures, runbooks, technical notes, and knowledge-base content.
• Contribute to reporting standards, metadata and data catalogue initiatives where they relate to BI assets and reporting governance.

Knowledge Transfer and Collaboration

• Collaborate closely with data architects, BI engineers, and DevOps specialists to ensure coherent data platform implementation.

• Support technical documentation, training materials, and handover sessions for sustainability and internal capacity building.

• Minimum 5 years of professional experience in Business Intelligence, analytics platforms, information systems, or related fields.

• Minimum 3 years of hands-on experience administering and supporting Tableau Server in a multi-environment or enterprise setting.

• Minimum 3 years of experience developing Tableau dashboards, reports, workbooks, published data sources, and extracts.

• Demonstrated experience gathering BI requirements and translating them into maintainable reporting solutions.

• Experience supporting production BI services, troubleshooting incidents, and documenting root causes and operational procedures.

• Experience working with SQL, relational databases, data extracts, file-based data sources, and scheduled data refresh processes.

• Ability to work directly with business stakeholders, service owners, infrastructure teams, database teams, and vendor support.

• Strong hands-on Tableau Server administration skills, including Tableau Services Manager, sites, projects, users, groups, permissions, licenses, ownership, schedules, subscriptions, extracts, and monitoring.

• Strong Tableau Desktop development skills, including dashboard design, calculations, parameters, actions, filters, performance optimization, publishing, and content maintenance.

• Experience with Tableau Prep Builder and/or Tableau Prep Conductor, including flow troubleshooting, scheduling, dependencies, and refresh sequencing.

• Strong SQL skills for querying, validating, reconciling, and troubleshooting reporting datasets and database objects.

• Understanding of BI security concepts, least-privilege access, content governance, permission segregation, and controlled promotion between environments.

• Experience investigating production incidents across the BI stack and communicating impact, cause, workaround, and resolution clearly.

• Working knowledge of service management processes, ticket-based support, change control, release validation, and technical documentation.

• Ability to work with heterogeneous sources such as relational databases, CSV and Excel files, shared folders, APIs or cloud query services.

Desirable Requirements:

• Experience with Tableau Server upgrades, backup and restore concepts, environment validation, and coordination with Tableau Support.
• Experience with scripting or automation using Python, PowerShell, Tableau REST API, Tableau Metadata API, or tabcmd.
• Knowledge of database views, extract design, live versus extract connection patterns, and performance tuning.
• Familiarity with AWS Athena or comparable cloud query services.
• Knowledge of metadata management, data catalogues, reporting standards, lineage, ownership, and BI asset governance.
• Experience using Confluence or equivalent knowledge-management tools and Git or another version-control platform.
• Knowledge of Agile delivery and ITIL-aligned service management practices.
• Experience with Microsoft Power BI, including report development, semantic models, data refresh configuration, workspace administration, and integration with Microsoft 365 or Azure data services.

Required Soft Skills:

• Teamwork: Builds constructive relationships and handles conflicts professionally.
• Communication: Clearly conveys ideas in written and verbal form; actively listens; ensures information is shared effectively.
• Cultural Awareness: Works constructively with colleagues of diverse backgrounds; values individual and cultural differences.
• Self-Management: Handles ambiguity and pressure; uses feedback as a development opportunity; pursues continuous learning.
• Results-Oriented: Delivers high-quality outcomes; takes initiative to achieve objectives.
• Adaptability: Responds positively to change and proposes innovative solutions.
• Excellent written and verbal communication, interpersonal, and collaboration skills.
• Ability to work in geographically distributed, multicultural teams.
• High initiative and ability to work independently.
• Capability to manage multiple concurrent projects.
• Technical documentation and training experience.
• Customer-focused problem-solving approach.
• Knowledge of a second UN language – an asset.

Desirable Certifications

• Educational Qualifications: Advanced university degree in Computer Science, Engineering, Information Systems, Data Science, or a related field. A relevant first-level university degree combined with additional qualifying experience may be accepted in lieu of the advanced degree.
• Tableau Certifications: Tableau Certified Data Analyst, Tableau Certified Consultant, Tableau Certified Architect, or comparable current Tableau certification is desirable.
• Service Management Certifications: ITIL, Scrum, PRINCE2 Agile, or comparable service management or delivery certifications are advantageous.
• Other Certifications: Relevant database, cloud, data management, or information security certifications are advantageous.