{"id":747150,"url":"https://alion.io/job/ubiquiti-backend-developer-kotlin","title":"Backend Developer (Kotlin)","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":155,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":137,"computed_at":"2026-10-28T05:59:10Z"}},"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":51000,"max_usd":109000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":10},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"GitHub Actions","optional":false},{"name":"Go","optional":false},{"name":"Kotlin","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Rest API","optional":false},{"name":"Spring Boot","optional":false},{"name":"Bash","optional":true},{"name":"Java","optional":true},{"name":"Spring Framework","optional":true},{"name":"Unix","optional":true}],"status":"live","first_seen_at":"2026-09-11T13:44:27Z","employer_posted_date":"2026-09-11","last_verified_at":"2026-10-28T10:40:01Z","board_verified":true,"closed_at":null,"days_open":46,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":46},"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.\nUbiquiti Prague office is looking for talented Backend developer for the UniFi Team.\nYou’ll be working on the UniFi application back-end to develop efficient, scalable and maintainable features.\nThis role requires working from our Prague office at least two days per week. \nThe project stack: Kotlin; Spring Boot 4.0; PostgreSQL; Github Actions; Go.\nResponsibilities:\nREST API development\nDevelop integrations with network device firmware and other UniFi OS applications.\nParticipate in all phases of development, including feature design and testing.\nCode reviews for other team members.\nRequirements:\nSenior-level engineering experience, typically 5+ years shipping production systems.\nStrong problem-solving and systems thinking - you can break down ambiguous problems and design good solutions.\nGood understanding of SOLID principles.\nExperience in web application development.\nDaily, fluent use of AI coding assistants as a core part of your workflow.\nFluent in English and Czech.\nNice to have:\nKotlin and Spring framework knowledge.\nAdvanced knowledge of networking.\nFamiliarity with networking, virtualization, storage and HW in general.\nExperience with Bash and Unix.\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.\nTeam building activities.\nGenerous budget to select your work station according to your preferences.\nTop floor office with terrace near Anděl with an amazing view of Prague.\nKitchen packed with food, snacks & sodas, meal allowance.\nA collective of developers who want to build the best product. Maximum effort to keep processes to a minimum - no unnecessary bureaucracy, complex reporting, or similar overhead.","description_format":"text","description_chars":2466,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"Czech","level":"Advanced (C1)","optional":false},{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":["Flexible schedule","Home office"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["RF & Wireless Hardware","Network Equipment","Video Surveillance"],"lifecycle":[{"event":"open","at":"2026-09-11T14:29:36Z"}],"visa":[],"liveness":{"score":71,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.89,"p_room":0.8,"age_days":46,"expected_fill_days":137,"reasons":["conf:4","velocity","win:early","crowd:brand"],"computed_at":"2026-10-28T05:59:10Z"},"pay":null,"html_url":"https://alion.io/job/ubiquiti-backend-developer-kotlin","json_url":"https://alion.io/job/ubiquiti-backend-developer-kotlin.json","meta":{"generated_at":"2026-10-28T11:08:04Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":14424,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-29T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":16273},"rest":"https://alion.io/mcp/rest/get_company?id=16273"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fubiquiti-backend-developer-kotlin"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fubiquiti-backend-developer-kotlin"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fubiquiti-backend-developer-kotlin"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/ubiquiti-backend-developer-kotlin\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fubiquiti-backend-developer-kotlin"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":747150}},{"tool":"search_jobs","arguments":{"company":"ui.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":747150},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. Docs: https://alion.io/developers"}}