{"id":2988132,"url":"https://alion.io/job/antal-mm-0064-senior-net-developer-integration-batch-services-ods","title":"MM-0064 Senior .NET Developer – Integration Batch Services (ODS)","company":{"id":870,"name":"Antal","domain":"antal.pl","url":"https://alion.io/company/antal-sp-z-o-o","size_band":"51-200","is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Traffit","truth_index":{"grade":"B","score":78,"open_postings":803,"ghost_share":0.274,"stale_share":0,"repost_share":0.005,"time_to_fill_p50_days":63,"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":null,"salary_estimate":{"min_usd":66000,"max_usd":109000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":348},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"AutoMapper","optional":false},{"name":"C#","optional":false},{"name":"Dependency Injection","optional":false},{"name":"Git","optional":false},{"name":"MS SQL","optional":false},{"name":"Rest API","optional":false},{"name":"SOAP","optional":false},{"name":"SQL","optional":false},{"name":"Windows","optional":false},{"name":"Agile","optional":true},{"name":"Azure","optional":true},{"name":"Docker","optional":true},{"name":"Kubernetes","optional":true},{"name":"Scrum","optional":true}],"status":"live","first_seen_at":"2026-10-21T06:44:11Z","employer_posted_date":"2026-10-21","last_verified_at":"2026-10-24T20:42:12Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":2},"description":"Senior .NET Developer - Enterprise Integrations\nLocation: Warsaw | Hybrid - 3 days per week from the client’s office\nContract: B2B\nAbout the role\nWe are looking for an experienced Senior .NET Developer to join an international organisation operating in the transport and logistics industry.\nYou will work on a business-critical integration platform responsible for processing and consolidating shipment, status and customs-related data from multiple systems. The role combines backend development, system integration, production troubleshooting and gradual modernisation of an established .NET solution.\nYour responsibilities\nMaintain and further develop an existing C# / .NET Framework solution based on Windows Services.\nDevelop and optimise SQL Server / T-SQL, including stored procedures, query performance, transactions and deadlock analysis.\nMaintain data mappings and processing logic using AutoMapper, Dapper and XML/XSD.\nDevelop and maintain integrations based on WCF/SOAP.\nAnalyse and resolve production and data consistency issues.\nCooperate with integration, business and master data teams.\nSupport the platform’s modernisation towards modern .NET and REST-based integrations.\nCreate and maintain unit and integration tests, technical documentation and development standards.\nWhat we’re looking for\n5+ years of commercial experience in .NET development.\nStrong knowledge of C# and .NET Framework 4.x.\nExperience with Windows Services 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