{"id":969048,"url":"https://alion.io/job/ubiquiti-senior-c-net-desktop-developer","title":"Senior C#/.NET Desktop Developer","company":{"id":16273,"name":"Ubiquiti","domain":"ui.com","url":"https://alion.io/company/ubiquiti","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":95,"open_postings":154,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":140,"computed_at":"2026-11-09T06:03:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Prague, Czech Republic"],"countries":["CZ"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":50000,"max_usd":108000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":10},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Avalonia","optional":false},{"name":"C#","optional":false},{"name":"Claude Code","optional":false},{"name":"Cursor","optional":false},{"name":"Figma","optional":false},{"name":"Linux","optional":false},{"name":"MVVM","optional":false},{"name":"OpenAI Codex","optional":false},{"name":"Rest API","optional":false},{"name":"WebSockets","optional":false},{"name":"Windows","optional":false},{"name":"MQTT","optional":true},{"name":"Unix","optional":true},{"name":"WebRTC","optional":true}],"status":"live","first_seen_at":"2026-09-16T14:34:00Z","employer_posted_date":"2026-09-16","last_verified_at":"2026-11-09T13:10:26Z","board_verified":true,"closed_at":null,"days_open":54,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":53},"description":"About Ubiquiti\nAt Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity.\nThe Ubiquiti Prague office is looking for an experienced C#/.NET Desktop Developer to help us build modern, high-quality desktop applications across macOS, Windows, and Linux.\nThis role requires working from our Prague office at least two days per week.\nRequirements:\n3+ years of professional C#/.NET development experience.\nStrong proficiency in C# and solid experience building desktop applications.\nExperience with modern .NET and desktop UI frameworks such as Avalonia, WPF, or similar, including MVVM and modern async/await patterns.\nExperience consuming RESTful APIs and working with WebSocket communication.\nExperience implementing high-fidelity UIs from Figma designs and collaborating closely with designers.\nSolid understanding of application architecture, performance optimization, debugging, and memory management.\nHands-on experience with modern AI-assisted development tools such as Claude Code, Cursor, Codex, or similar, using AI as part of day-to-day development.\nFluent in English and Czech.\nNice to Have:\nExperience with cross-platform desktop development, including shared core architecture with platform-specific UI and service layers.\nExperience building applications with real-time updates or streaming data using WebRTC, MQTT, or similar technologies.\nExperience with IPC mechanisms such as named pipes or Unix sockets between a UI process and a privileged helper or service.\nExperience developing platform-specific background services, such as Windows Services or Linux daemons.\nInterest in networking technologies and IoT products, including VPNs, WireGuard, and network management.\nBenefits:\nCompetitive salary, 5 weeks of vacation per year.\nDiscretionary bonuses based on individual performance.\nFlexible working hours, home office.\nAccess to all the latest Ubiquiti products and prototypes for home use and testing.\nTop floor office near Anděl with terrace and amazing view of Prague.\nKitchen packed with food, snacks & sodas, meal allowance.\nA collective of developers who want to build the best product. 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