{"id":1140512,"url":"https://alion.io/job/xtb-data-engineer-tax-care","title":"Data Engineer (Tax Care)","company":{"id":2723,"name":"XTB","domain":"xtb.com","url":"https://alion.io/company/xtb","size_band":"51-200","is_staffing_agency":false,"is_intermediary":false,"ats_vendor":"Lever","truth_index":null},"role":"Data Science","role_family":"Data Science","seniority":"middle","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","hiring_geo_confidence":"structured","locations":["Warsaw, Poland"],"countries":["PL"],"hiring_countries":["PL"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":44000,"max_usd":83000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":21},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Airflow","optional":false},{"name":"CI/CD","optional":false},{"name":"Dagster","optional":false},{"name":"Databricks","optional":false},{"name":"dbt","optional":false},{"name":"ETL/ELT","optional":false},{"name":"FastAPI","optional":false},{"name":"Flask","optional":false},{"name":"MS SQL","optional":false},{"name":"pySpark","optional":false},{"name":"Python","optional":false},{"name":"Rest API","optional":false},{"name":"Spark","optional":false},{"name":"SQL","optional":false},{"name":"Apache Kafka","optional":true},{"name":"Delta Lake","optional":true},{"name":"gRPC","optional":true},{"name":"Snowflake","optional":true},{"name":"SSIS","optional":true},{"name":"Streamlit","optional":true}],"status":"live","first_seen_at":"2026-09-23T10:32:56Z","employer_posted_date":"2026-09-23","last_verified_at":"2026-09-23T20:01:29Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"XTB is a global company from the financial industry, focusing on online trading of financial instruments. We are the largest FinTech in Poland and a leader in Central and Eastern Europe, and the range of our operations covers several countries, including Asia and South America. At XTB, we focus on the development of our employees, giving them opportunities to gain knowledge and skills in various fields, as well as offering a number of training and development programs. If you are looking for challenges and want to gain valuable experience in an international business environment, XTB is the right place for you.\nWe are a certified Great Place to Work company.\nWe are looking for a Data Engineer to join the Tax Care team within the Customer Care program. We build and maintain the data flows behind XTB's accounting and tax processes - from the subsidiary ledger and client tax declarations to reporting for the finance organization. You will design scalable data pipelines, take part in our migration to Databricks, help modernize database solutions, and co-create a Python service exposing tax data via REST API and web UI. Our output becomes an accounting entry, so data correctness and reliability are the heart of this role.\nResponsibilities\nDesigning, building and maintaining data pipelines that feed XTB's accounting and tax systems - using SQL, Python, dbt and Apache Spark / PySpark.\nMigrating the existing data platform to Databricks (lakehouse), including rewriting legacy MS SQL Server stored procedures into Spark / Databricks SQL.\nBuilding and maintaining a data service - a Python backend exposing data over a REST API, together with its web UI - from data model through API design to deployment.\nWorking with raw data and designing methods for its integration into the data platform.\nDeveloping CI/CD pipelines for data engineering solutions.\nCreating and maintaining Infrastructure as Code solutions.\nIntegrating the data platform with other systems and applications.\nParticipating in architectural decision-making and defining engineering standards.\nConducting code reviews, documenting solutions, and sharing knowledge with team members.\nRequirements\nAt least 3 years of experience as a Data Engineer or in a related software engineering role.\nStrong Python - ability to write clean, testable production code, including backend services (FastAPI / Flask or similar) exposing REST APIs.\nAdvanced SQL (query optimization on large datasets) and practical experience with T-SQL / MS SQL Server, including reading and reasoning about legacy stored procedures.\nHands-on experience with Apache Spark (PySpark).\nExperience with dbt - models, tests, macros, layered warehouse design.\nStrong understanding of data warehouse design principles and data modeling.\nPractical knowledge of ETL/ELT processes.\nExperience analyzing existing legacy code with the goal of improving it and migrating it to newer technology.\nFamiliarity with data quality, monitoring, and pipeline reliability.\nExperience with workflow orchestration tools (e.g., Airflow, Dagster, or similar).\nKnowledge of CI/CD pipeline building and maintenance principles.\nUnderstanding of REST standards for system integration.\nStrong analytical problem-solving skills and attention to detail - willingness to work under a hard monthly accounting close deadline.\nEffective communication skills and the ability to collaborate with both engineers and non-technical (finance / accounting) stakeholders.\nOpenness to learning and exploring new technologies and methodologies.\nNice to have\nExperience with Databricks or another lakehouse platform (Delta Lake, Unity Catalog).\nExperience with Snowflake (our current analytical platform during the migration period).\nFront-end basics - ability to build a simple web UI on top of your own API (React, Streamlit, Dash or similar).\nExperience with SSIS and SQL Server Agent (maintained by another team - useful context, not a daily duty).\nExperience in the financial / accounting / tax domain, or with reconciliation-heavy data.\nUnderstanding of gRPC for internal system integration.\nExperience with Kafka, Pub/Sub, or other event streaming systems.\nExperience building near-real-time / real-time pipelines.\nExperience working with Infrastructure-as-Code tools.\nUnderstanding of CDC (Change Data Capture) and data integration from transactional systems.\nWhat we offer\nReal influence on the development of the company and the product.\nWork in an experienced team that is happy to share its knowledge.\nA clear vision of development thanks to regular feedback and clear career paths.\nRegular team-building meetings.\nBenefits\nA training budget for courses and conferences that interest you.\nAn extra day off on your birthday.\nAn extra day off for parents.\nEquipment tailored to your needs.\nPrivate medical care and group insurance.\nAccess to an e-learning platform for learning English and a benefits platform.\nAccess to a wellbeing platform and the opportunity to take advantage of workshops and private therapy sessions.\nRemote work, from the office in Warsaw or from a coworking space in your city.","description_format":"text","description_chars":5111,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Financial Services"],"lifecycle":[{"event":"open","at":"2026-09-23T10:51:43Z"}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":94,"reasons":["conf:1","win:early"],"computed_at":"2026-09-23T21:04:39Z"},"pay":null,"html_url":"https://alion.io/job/xtb-data-engineer-tax-care","json_url":"https://alion.io/job/xtb-data-engineer-tax-care.json","meta":{"generated_at":"2026-09-23T21:04:39Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers"}}