{"id":55931,"url":"https://alion.io/job/antal-fullstack-engineer-net-react-azure-terraform","title":"HSBCJP00058685 FullStack Engineer (.NET / React / Azure / Terraform)","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":79,"open_postings":805,"ghost_share":0.344,"stale_share":0,"repost_share":0.005,"time_to_fill_p50_days":57,"computed_at":"2026-10-29T05:49:05Z"}},"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":70000,"max_usd":116000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":352},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"ASP.NET Core","optional":false},{"name":"Azure","optional":false},{"name":"Azure DevOps","optional":false},{"name":"Azure SQL Database","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"Clean Architecture","optional":false},{"name":"Git","optional":false},{"name":"Jest","optional":false},{"name":"Least Privilege","optional":false},{"name":"Microsoft Entra ID","optional":false},{"name":"MS SQL","optional":false},{"name":"OpenTelemetry","optional":false},{"name":"Playwright","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"Terraform","optional":false},{"name":"TypeScript","optional":false},{"name":"Vault","optional":false},{"name":"Vitest","optional":false},{"name":"xUnit","optional":false},{"name":"Azure AKS","optional":true},{"name":"Azure Data Factory","optional":true},{"name":"Bicep","optional":true},{"name":"Databricks","optional":true},{"name":"Docker","optional":true},{"name":"JavaScript","optional":true},{"name":"Kubernetes","optional":true},{"name":"Power BI","optional":true},{"name":"SSIS","optional":true},{"name":"Windows","optional":true},{"name":"WPF","optional":true}],"status":"live","first_seen_at":"2026-08-13T09:28:40Z","employer_posted_date":"2026-08-13","last_verified_at":"2026-10-29T21:52:17Z","board_verified":true,"closed_at":null,"days_open":77,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":76},"description":"About the role\nWe are looking for a Senior Full-Stack Engineer to join a large-scale modernization programme focused on migrating a portfolio of legacy applications and databases to a modular, cloud-native architecture on Microsoft Azure. You will work across backend, frontend, database and cloud/DevOps areas, contributing directly to production solutions and supporting the incremental transformation of business-critical systems.\nYour responsibilities\nDesign and implement backend services and REST APIs in .NET 9 using Clean Architecture.\nBuild and maintain React and TypeScript microfrontends integrated through module federation.\nDevelop and optimize MSSQL and Azure SQL schemas, stored procedures, views and EF Core queries.\nCreate and maintain Terraform code for provisioning Azure resources across environments.\nBuild, optimize and support Azure DevOps CI/CD pipelines using YAML.\nIntegrate Entra ID / MSAL authentication and apply security best practices, including Key Vault and least-privilege access.\nImplement observability with Application Insights, structured logging, health checks and alerting.\nRefactor legacy .NET and T-SQL solutions and extract business logic during migration.\nCreate and maintain unit, integration, API and end-to-end automated tests.\nTroubleshoot production incidents, deliver fixes and support deployments.\nCollaborate in Agile ceremonies, estimate work, define acceptance criteria and participate in code reviews.\nRequired skills and experience\nAt least 5 years of commercial full-stack development experience with C# and .NET, including .NET 6+ and ASP.NET Core.\nStrong knowledge of EF Core and MSSQL / Azure SQL, including query tuning, indexing, transactions and stored procedures.\nHands-on experience with Azure services such as App Service, Azure SQL, Storage, Key Vault, Functions and Service Bus.\nPractical experience with Infrastructure as Code using Terraform, including modules, state management and multi-environment provisioning.\nExperience with Azure DevOps CI/CD and YAML pipelines.\nExperience building and securing REST APIs, including validation, versioning, OAuth, JWT and Entra ID.\nExperience with automated testing tools such as xUnit, Jest, Vitest or Playwright.\nKnowledge of Application Insights, OpenTelemetry and structured logging.\nGood Git practices and code review discipline.\nEnglish at B2 level or higher for technical communication.\nNice to have\nProduction experience with React and TypeScript.\nExperience with Azure Data Factory, Databricks, Spark, Power BI or SSRS.\nKnowledge of microfrontends and module federation.\nExperience with Docker and Kubernetes / AKS.\nKnowledge of Bicep or ARM templates.\nExperience with event-driven integration using Service Bus or Event Hubs.\nExperience modernizing legacy technologies such as ASP.NET MVC, Razor, WPF, WinForms, Windows Services or SSIS.\nAzure certifications such as AZ-204, AZ-400 or AZ-104, or HashiCorp Terraform Associate.\nWhat we offer\nHybrid work in Kraków, with 6 days per month in the office.\nB2B contract\nBenefits: Luxmed, Multisport 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