{"id":3976807,"url":"https://alion.io/job/sii-python-developer-fmx-3","title":"Python Developer (f/m/x)","company":{"id":1387,"name":"Sii","domain":"sii.pl","url":"https://alion.io/company/sii","size_band":"5000+","is_staffing_agency":false,"employer_type":"staffing","is_intermediary":false,"listed_via":null,"ats_vendor":"Career sitemap","truth_index":null},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":"contractor","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Warsaw, Poland"],"countries":["PL"],"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":"Agile","optional":false},{"name":"CI/CD","optional":false},{"name":"FastAPI","optional":false},{"name":"Git","optional":false},{"name":"Python","optional":false},{"name":"Rest API","optional":false},{"name":"Scrum","optional":false},{"name":"SQL","optional":false}],"status":"live","first_seen_at":"2026-11-09T13:26:32Z","employer_posted_date":null,"last_verified_at":"2026-11-09T13:26:32Z","board_verified":false,"closed_at":null,"days_open":0,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":0},"description":"We are looking for a Python Developer to join our international team developing a strategic platform that powers vehicle pricing and recommendation processes across the organization. The solution collects and processes large volumes of internal and external data, transforms it into a unified data model, and delivers pricing insights through modern APIs. As a Python Developer, you will play a key role in building scalable data pipelines, backend services, and integrations while collaborating closely with product owners, architects, and software engineers in an Agile environment.Zakres obowiązków\nDesigning, developing, and maintaining data ingestion and transformation pipelines\nBuilding and evolving the data model with a strong focus on data quality, consistency and reliability\nDeveloping and maintaining Python backend services and REST APIs that expose pricing and vehicle-related data\nIntegrating internal and external systems through APIs and event-driven data flows\nWriting clean, well-documented and well-tested code while ensuring production stability through monitoring and data quality checks\nCollaborating closely with Product Owners, Architects, Scrum Masters and Developers to deliver scalable business solutions\nWymagania\nAt least 3 years of professional experience as a Python Developer with a focus on backend and data development\nStrong proficiency in Python, including experience with data-processing libraries such as Pandas\nExperience with frameworks such as FastAPI or Flask\nSolid SQL skills and hands-on experience with relational databases, particularly PostgreSQL\nExperience building and orchestrating data pipelines, ideally using Airflow\nFamiliarity with Git, code reviews, testing, and CI/CD practices\nFluent English and Polish communication skills, with experience working in an international environment\nWillingness to work from the Warsaw office 2–3 days per week\nTech stack\nPython\npandas\nFastAPI\nFlask\nSQL\nPostgreSQL\nApache Airflow\nAngular","description_format":"text","description_chars":1978,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["IT Outsourcing & Dedicated Teams","Engineering Services","IT Staffing & Staff Augmentation"],"lifecycle":[{"event":"open","at":"2026-11-09T18:21:00Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring 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