{"id":2847494,"url":"https://alion.io/job/link-group-senior-software-engineer-pythonreactdata","title":"Senior Software Engineer – Python/React/Data","company":{"id":880,"name":"Link Group","domain":"linkgroup.co","url":"https://alion.io/company/link-group","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"staffing","is_intermediary":false,"listed_via":null,"ats_vendor":"Recruitify","truth_index":{"grade":"B","score":84,"open_postings":103,"ghost_share":0,"stale_share":0.65,"repost_share":0.01,"time_to_fill_p50_days":47,"computed_at":"2026-10-24T06:02:35Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":32000,"max":39000,"currency":"PLN","period":"month","gross":null,"usd_annual":120504},"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Airflow","optional":false},{"name":"C#","optional":false},{"name":"Databricks","optional":false},{"name":"ETL/ELT","optional":false},{"name":"JavaScript","optional":false},{"name":"MS SQL","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"Snowflake","optional":false},{"name":"SQL","optional":false}],"status":"live","first_seen_at":"2026-10-19T07:41:48Z","employer_posted_date":"2026-10-19","last_verified_at":"2026-10-24T13:16:48Z","board_verified":true,"closed_at":null,"days_open":5,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":5},"description":"Senior Software Engineer - Python/React/Data\nRole Overview\nWe are looking for a Senior Software Engineer to develop and maintain reporting applications combining backend development, data engineering, database technologies, and frontend solutions. The role focuses on building reliable data workflows and intuitive reporting tools using Python, SQL, and React. Experience with C#/.NET is an advantage.\nKey Responsibilities\nDevelop and enhance applications for business reporting, data analysis, and performance monitoring.\nBuild and maintain ETL pipelines, data integrations, and reconciliation processes.\nImplement backend services and business logic using Python and SQL.\nWork with data platforms such as Snowflake and Databricks, and orchestrate workflows using Apache Airflow.\nDevelop interactive reporting interfaces and visualizations using JavaScript and React.\nImplement data validation and automation to improve accuracy and reduce manual work.\nAnalyze data discrepancies, optimize existing processes, and ensure reliable reporting.\nMaintain existing applications, including components built with C#/.NET.\nCollaborate with business stakeholders and engineering teams throughout the development lifecycle, from requirements gathering to deployment and production support.\nRequired Experience and Skills\n7+ years of professional software development experience.\nStrong Python programming skills and advanced SQL knowledge, including T-SQL.\nExperience with ETL, data transformation, integration, and reconciliation.\nFamiliarity with Snowflake or Databricks and Apache Airflow.\nFrontend development experience with JavaScript and React.\nExperience building and maintaining end-to-end applications.\nStrong analytical skills and understanding of data quality, numerical accuracy, and system reliability.\nGood communication and collaboration skills.\nDegree in Computer Science or a related field, or equivalent technical experience.\nNice to Have\nExperience with C#/.NET and existing application maintenance.\nKnowledge of financial reporting, business intelligence, or analytical systems.\nExperience with financial calculations, data controls, and legacy system 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