Junior Data Engineer - Tieto Tech Consulting (m/f/d)
Tieto · Varna, Varna, Bulgaria · Hybrid
Posted Oct 5, 2026
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Tieto Tech Consulting (MentorMate from 2001 to 2026) provides design-led, data-centric, and AI-powered digital engineering & consulting services to enterprises worldwide. With a strong heritage of Nordic quality, local presence, and global-scale operations, we are backed by 8,500+ IT professionals. Our clients trust us for advanced data and analytics skills, top industry-specific expertise, specialized software R&D, and the capabilities of a multinational team. We are part of Tieto, a leading technology company with an annual revenue of approximately EUR 2bn.   
Tieto Tech Consulting’s team in Bulgaria consists of 500+ professionals specializing in the development of tailored digital solutions in diverse industries. 
Key responsibilities 
Building and maintaining data pipelines using Databricks, SQL, Python, and PySpark
Supporting the migration of existing data processes and legacy solutions to modern cloud platforms
Transforming, validating, and reconciling data from various business systems
Contributing to Lakehouse solutions based on Bronze, Silver, and Gold data layers
Helping ensure data quality, consistency, and reliability
Troubleshooting and supporting existing data pipelines and integrations
Working closely with senior engineers, architects, analysts, and customer teams
Participating in Agile development processes and team ceremonies
Learning and applying engineering best practices, including version control and automation
Continuously developing your technical knowledge and expertise in modern data technologies
Required experience & qualifications 
Good understanding of SQL
Basic experience with Python
Understanding of ETL/ELT concepts and data integration processes
Exposure to Databricks, Apache Spark, or PySpark
Understanding of data warehousing and data modeling concepts
Good problem-solving skills and attention to detail
Strong communication skills and willingness to collaborate in a team environment
Professional working proficiency in English
A significant advantage would be
Experience in data engineering, software development, analytics, or a related area
Familiarity with Azure cloud services
Understanding of Lakehouse architecture or Delta Lake concepts
Experience using Git
Knowledge of CI/CD practices
Experience with Power BI or reporting solutions
Understanding of banking, finance, or other regulated industries
Azure or Databricks certifications
At Tieto, we believe in the power of diversity, equity, and inclusion. We encourage applicants of all backgrounds, genders (m/f/d), and walks of life to join our team, as we believe that this fosters an inspiring workplace and fuels innovation. Our commitment to openness, trust, and diversity is at the heart of our mission to create digital futures that benefit businesses, societies, and humanity.
Diversity, equity and inclusion | Sustainability | Tieto
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