{"id":2342400,"url":"https://alion.io/job/datagroup-etl-developer-with-python-and-postgresql-m-f-d-2","title":"ETL Developer with Python and PostgreSQL (m / f / d)","company":{"id":674822,"name":"DATAGROUP","domain":"datagroup.de","url":"https://alion.io/company/data-group-2","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"softgarden","truth_index":null},"role":"Data Science","role_family":"Data Science","seniority":"middle","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":["PL"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":69000,"max_usd":160000,"period":"year","method":"global_role_seniority_cell","sample_n":782},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"ETL/ELT","optional":false},{"name":"Oracle","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"SQL","optional":false},{"name":"DataStage","optional":true}],"status":"live","first_seen_at":"2026-10-12T10:19:17Z","employer_posted_date":"2026-10-12","last_verified_at":"2026-10-13T01:04:19Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Job DescriptionDATAGROUP Polska Sp. z o.o. is looking for a skilled Python and PostgreSQL Developer to support our ongoing technology refresh and migration initiatives. This is a mid-level position offering remote flexibility and the opportunity to work on forward-looking IT projects that involve modernizing legacy systems and migrating to cloud and open-source platforms.\nDesign and implement Python components for the ETL process.\nContribute to the migration from Oracle to PostgreSQL.\nCollaborate with cross-functional teams on application modernisation and cloud migration efforts.\nEnsure code quality, performance, and maintainability throughout the development lifecycle.\nRequired Profile\nWe are looking for a motivated young professional with a passion for Python development and a keen interest in IT. The ideal candidate should possess the following skills and qualifications:\nGood knowledge and several years of practical experience in Python development\nSolid skills in Postgres and SQL\nETL experience is desirable\nStrong analytical skills, a solution-oriented mindset, and the ability to work independently\nExperience in conceptual work\nExcellent understanding of data\nIndependent and structured working style\nVery good command of English, both spoken and written\nYour responsibilities\nMigrate ETL pipelines from IBM Datastage and Oracle using Python to extract data from various sources, transform it according to business rules, and load it into PostgreSQL databases.\nCollaborate with data architects and stakeholders to understand data requirements, model data flows, and define transformation logic.\nImplement efficient SQL queries, stored procedures, and functions in PostgreSQL to support data integration and reporting needs.\nOptimize ETL processes for performance, scalability, and resource usage, including query tuning in PostgreSQL.\nBuild and maintain data validation and quality checks, including automated tests, reconciliation scripts, and alerting for data anomalies.\nMonitor ETL jobs and database health, diagnose failures or performance issues, and implement fixes or improvements.\nDocument ETL processes, data dictionaries, lineage, and operational runbooks to ensure maintainability and team knowledge transfer.\nTroubleshoot cross-system data issues, participate in incident response, and provide root cause analysis and remediation plans.\nParticipate in code reviews, mentor junior developers, and contribute to improving team standards and best practices.\nOffer\nAt DATAGROUP Polska Sp. z o.o., we value our employees and offer a comprehensive benefits package to support your professional and personal growth:\nFlexible working hours and remote work options (Poland only).\nOpen and cooperative corporate culture and a trusting working atmosphere\nFlat 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