{"id":2114897,"url":"https://alion.io/job/spyrosoft-senior-full-stack-software-engineer-netdesktopweb-2","title":"Senior Full-Stack Software Engineer (.NET/Desktop/Web)","company":{"id":933,"name":"Spyrosoft","domain":"spyro-soft.com","url":"https://alion.io/company/spyrosoft","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Teamtailor","truth_index":{"grade":"B","score":73,"open_postings":95,"ghost_share":0.537,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":15,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Wrocław, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":52000,"max_usd":87000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":339},"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Azure","optional":false},{"name":"C#","optional":false},{"name":"JavaScript","optional":false},{"name":"React.js","optional":false},{"name":"SQL","optional":false},{"name":"WPF","optional":false},{"name":"Agile","optional":true},{"name":"Azure DevOps","optional":true},{"name":"Azure SQL Database","optional":true},{"name":"CI/CD","optional":true},{"name":"Entity Framework Core","optional":true},{"name":"GDPR","optional":true},{"name":"Git","optional":true},{"name":"MVVM","optional":true},{"name":"Rest API","optional":true},{"name":"Scrum","optional":true},{"name":"SignalR","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-07-16T10:03:38Z","employer_posted_date":"2026-07-16","last_verified_at":"2026-10-17T05:53:13Z","board_verified":true,"closed_at":null,"days_open":92,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":92},"description":"Tech stack:\n.NET Framework 4, WinForms / WPF, C#, ADO.NET\n\nJavaScript, HTML, CSS, React\n\nSQL Server, PL-SQL\n\nAzure\n\nRequirements:\nBachelor’s degree in Computer Science, Software Engineering, or a related technical field is a plus\n\n4-5 years of commercial experience as a Software Engineer\n\nStrong knowledge of C# and the .NET platform (.NET 4, .NET Framework, .NET Core)\n\nExperience in developing and maintaining desktop applications (WinForms and/or WPF)\n\nGood knowledge of JavaScript and web technologies (HTML, CSS)\n\nExperience working with React or another modern front-end framework\n\nGood knowledge of SQL and relational databases (SQL Server, Azure SQL)\n\nExperience with Microsoft Azure or other cloud solutions\n\nExperience working in Scrum/Agile environments\n\nKnowledge of version control systems (Git)\n\nAbility to write clean, maintainable, and well-structured code\n\nStrong analytical and problem-solving skills\n\nAbility to communicate effectively and collaborate with both technical and business stakeholders\n\nEnglish proficiency at a minimum B1/B2 level\n\nPolish proficiency at a minimum B2 level\n\nNice to have:\nExperience working with Azure DevOps and CI/CD processes\n\nKnowledge of TypeScript\n\nExperience in modernizing desktop applications and migrating solutions to web-based environments\n\nUnderstanding of software design principles, patterns, and best practices\n\nExperience in writing unit, integration, and automated tests\n\nKnowledge of application security principles and data protection regulations (GDPR)\n\nExperience working with ERP, HR, or payroll systems\n\nKnowledge of technologies and tools such as Entity Framework, SignalR, REST API, Web API, and microservices architecture\n\nExperience integrating with third-party systems and various types of APIs\n\nKnowledge of the MVVM pattern and best practices for developing WPF desktop applications\n\nExperienced in using AI tools in day-to-day workflow\n\nProject description:\nWe are looking for an experienced and motivated Full-Stack Software Engineer who is passionate about Microsoft technologies and relational SQL databases. You will join a team responsible for developing and maintaining business applications that support HR processes for a leading provider of ERP and HR solutions in the Polish market.\nAs a Full-Stack Software Engineer, you will be primarily responsible for the development, maintenance, and modernization of desktop applications built on the .NET platform (WinForms/WPF). As our product evolves, you may also contribute to web-based interfaces using JavaScript and React, though this is expected to represent a smaller part of the role, at least in the near term.You will also leverage your SQL expertise to design, optimize, and maintain data models and database queries.\nIn this role, you will collaborate closely with Product Owners, designers, and fellow engineers to deliver high-quality solutions that address real business needs. 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