Junior Data Engineer - Budapest, Hungary
Confirmed on the employer's own hiring board on Nov 13, 2026. First seen by Alion on Nov 12, 2026. Mthree scores B on the Alion truth index.
Want to start your career as a Data Engineer?
You will be part of a major cloud transformation programme, helping migrate legacy data systems and workflows to Snowflake for a leading global investment bank. The role will involve developing Python-based automation tools, leveraging AI to improve efficiency, building and optimising data pipelines, and managing data extraction, transformation and reconciliation. You will also work with technologies such as Snowflake, Python, Databricks and Dataiku, supporting data migration, testing, cloud platform adoption and ongoing optimisation while collaborating closely with technical teams and business stakeholders.
What you’ll do:
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Leverage AI tools, skills and agents to improve efficiency and accelerate delivery.
Develop Python-based modules to automate legacy workflow migrations to Snowflake.
Manage data extraction, analysis, mapping and transformation across legacy platforms (Teradata, DB2, Hadoop, etc.).
Build and optimise workflows across Snowflake, Dataiku, Databricks and ADLS.
Support UAT, testing, data reconciliation and migration optimisation.
Develop Python/AI tools for automated reporting and reconciliation.
Support legacy data migration, historical data conversion and PySpark-to-Snowpark recipe conversion.
Coordinate user migration, cloud onboarding and risk remediation.
Provide progress updates, technical documentation and handover.
Support wider data engineering activities, including data modelling, ETL, data quality and dependency analysis.
How the Alumni program works:
- Apply via this job advert.
- Complete our assessment process.
- Get trained at mthree Academy in an online class for 4-8 weeks with other graduates.
- Join an mthree client for 12-24 months while receiving support and salary increases every 12 months.
- The vast majority then convert to permanent employees with the client at the end of the program.
What you’ll learn at the mthree Academy:
- How to design, develop, and test a full-stack application.
- How to demonstrate professionalism, including communication skills and personal interactions.
- How to explain industry concepts at a high level.
- An understanding of monitoring, supporting, and troubleshooting, and how it ties into good development processes.
What you need:
- Bachelor's degree in computer science or a related STEM subject (science, technology, engineering, maths).
- Grade of 4 out of 5 and above. We look for potential, not prestige, but it’s important that you enjoy pushing yourself to pick up new ideas.
- Experience with OOP (object oriented programming).
- Solid knowledge of software engineering principles (data structures, OOP, design patterns, multithreading).
- Skills in troubleshooting and debugging.
- Hands on Python to build uatomation and tooling
- Knowledge of database concepts (SQL, stored procs, schema design).
- An understanding of the formal SDLC (software development lifecycle).
- An understanding of test-driven development.
- The successful candidate must, by the start of the employment, have permission to work in the Hungary.
What you'll get:
- Fully paid, in-depth, interactive training in small classes with graduates like you. Our training is created and delivered by industry experts who know your field inside out.
- A generous graduate salary.
- Pay rises every 12 months to reflect your progress.
- Ongoing training and support.
- Valuable industry experience. Ultimately, a foot in the door to build your career in an in-demand niche.
How to apply:
- Hit ‘Apply Now’ to tell us a bit about you.
- Complete the online assessment (we’ll send you a link by email).
- Complete the interviews with our friendly talent team over phone and video.
- Lastly, you’ll interview with one or more of our clients.
So you don’t miss out on your dream job, we encourage you to be open to relocating.
We take great pride in celebrating the diversity of each and every individual who contributes to making mthree the company it is today and will be in the future. We value diversity both within mthree and with our partner companies, and we're proud to provide an environment where all our colleagues can flourish. That means promoting a strong culture of equality but, most importantly, inclusion. We never want people to change - only add to the amazing mix of people that work for mthree.