{"id":4189519,"url":"https://alion.io/job/mthree-junior-data-engineer-budapest-hungary","title":"Junior Data Engineer - Budapest, Hungary","company":{"id":456041,"name":"Mthree","domain":"mthree.com","url":"https://alion.io/company/mthree-2","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"staffing","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":82,"open_postings":15,"ghost_share":0,"stale_share":0.533,"repost_share":0,"time_to_fill_p50_days":68,"computed_at":"2026-11-12T10:38:37Z"}},"role":"Data Science","role_family":"Data Science","seniority":"junior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Hungary"],"countries":["HU"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Databricks","optional":false},{"name":"Db2","optional":false},{"name":"ETL/ELT","optional":false},{"name":"Hadoop","optional":false},{"name":"pySpark","optional":false},{"name":"Python","optional":false},{"name":"Snowflake","optional":false},{"name":"SQL","optional":false},{"name":"Teradata","optional":false},{"name":"Spark","optional":true}],"status":"live","first_seen_at":"2026-11-12T15:02:30Z","employer_posted_date":"2026-11-12","last_verified_at":"2026-11-13T21:01:31Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"Want to start your career as a Data Engineer?\nYou 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.\nWhat you’ll do:\n*:first-child]:mt-0 [&>*:last-child]:mb-0 [&>*:last-child]:mb-0 [&>ol:first-child]:mt-0 [&>ul:first-child]:mt-0\" data-selected-text-overlay-target=\"_r_l6_\" data-markdown-text-style=\"assistant-message\">\nLeverage AI tools, skills and agents to improve efficiency and accelerate delivery.\n\nDevelop Python-based modules to automate legacy workflow migrations to Snowflake.\n\nManage data extraction, analysis, mapping and transformation across legacy platforms (Teradata, DB2, Hadoop, etc.).\n\nBuild and optimise workflows across Snowflake, Dataiku, Databricks and ADLS.\n\nSupport UAT, testing, data reconciliation and migration optimisation.\n\nDevelop Python/AI tools for automated reporting and reconciliation.\n\nSupport legacy data migration, historical data conversion and PySpark-to-Snowpark recipe conversion.\n\nCoordinate user migration, cloud onboarding and risk remediation.\n\nProvide progress updates, technical documentation and handover.\n\nSupport wider data engineering activities, including data modelling, ETL, data quality and dependency analysis.\n\nHow the Alumni program works:\nApply via this job advert.\nComplete our assessment process.\nGet trained at mthree Academy in an online class for 4-8 weeks with other graduates. \nJoin an mthree client for 12-24 months while receiving support and salary increases every 12 months.\nThe vast majority then convert to permanent employees with the client at the end of the program. \n What you’ll learn at the mthree Academy: \nHow to design, develop, and test a full-stack application.\nHow to demonstrate professionalism, including communication skills and personal interactions.\nHow to explain industry concepts at a high level.\nAn understanding of monitoring, supporting, and troubleshooting, and how it ties into good development processes.\nWhat you need:\nBachelor's degree in computer science or a related STEM subject (science, technology, engineering, maths). \nGrade 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.\nExperience with OOP (object oriented programming).\nSolid knowledge of software engineering principles (data structures, OOP, design patterns, multithreading).\nSkills in troubleshooting and debugging.\nHands on Python to build uatomation and tooling \nKnowledge of database concepts (SQL, stored procs, schema design). \nAn understanding of the formal SDLC (software development lifecycle). \nAn understanding of test-driven development. \nThe successful candidate must, by the start of the employment, have permission to work in the Hungary.\nWhat you'll get:\nFully 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.\nA generous graduate salary.\nPay rises every 12 months to reflect your progress.\nOngoing training and support.\nValuable industry experience. Ultimately, a foot in the door to build your career in an in-demand niche.\nHow to apply:\nHit ‘Apply Now’ to tell us a bit about you.\nComplete the online assessment (we’ll send you a link by email).\nComplete the interviews with our friendly talent team over phone and video.\nLastly, you’ll interview with one or more of our clients. \nSo you don’t miss out on your dream job, we encourage you to be open to relocating.\nWe 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. 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