{"id":3754031,"url":"https://alion.io/job/ajax-systems-senior-java-developer-smart-home-2","title":"Senior Java Developer (Smart Home)","company":{"id":3575,"name":"Ajax Systems","domain":"ajax.systems","url":"https://alion.io/company/ajax-systems","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"B","score":83,"open_postings":165,"ghost_share":0.2,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":83,"computed_at":"2026-11-07T05:47:08Z"}},"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":["Lviv, Ukraine"],"countries":["UA"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"CI/CD","optional":false},{"name":"Git","optional":false},{"name":"Gradle","optional":false},{"name":"Java","optional":false},{"name":"Kotlin","optional":false},{"name":"Kubernetes","optional":false},{"name":"Python","optional":false},{"name":"Apache Kafka","optional":true},{"name":"AWS","optional":true},{"name":"gRPC","optional":true},{"name":"NATS","optional":true},{"name":"Netty","optional":true},{"name":"Redis","optional":true}],"status":"live","first_seen_at":"2026-11-04T14:25:50Z","employer_posted_date":"2026-11-04","last_verified_at":"2026-11-07T05:57:35Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":2},"description":"Ajax Systems, an international tech company and the largest manufacturer of security systems in Europe.\nWe are looking for a new team member to join our System devisions as Java Developer.\nThe System Division is responsible for building and developing the Ajax software ecosystem. The team develops and maintains OS Malevich and the Video Management System, builds scalable cloud infrastructure, and creates client applications for multiple platforms, ensuring that all system components work together as a unified ecosystem.\nThe division works with Java, Kotlin, Swift, C, C++, and Python. It includes embedded, cloud, mobile, and desktop engineers who ensure the stable operation of Ajax as a single digital platform.\nRequired skills:\n5+ years of commercial experience in backend development with Java in an enterprise environment.\nStrong understanding of Java Concurrency and hands-on experience with concurrent programming in production systems.\nSolid understanding of SOA, microservices and event-driven architecture.\nPractical experience with cloud computing platforms.\nExperience building and supporting high-load, scalable and highly available systems;\nHands-on experience with messaging brokers.\nStrong understanding of modern backend infrastructure, NoSQL, key-value databases and in-memory storage solutions.\nPractical experience with Kubernetes.\nExperience with Git, Gradle or othet CI/CD tools.\nStrong knowledge of unit testing and automated testing approaches\nWould be a plus:\nexperience with these technologies: Redis, Netty, Akka, NATS, AWS, Kafka, MongoDB, gRPC.\nPractical experience with Kotlin.\nDesire to grow into a team leadership role.\nWhat you will do:\ndesign and develop core backend services and data pipelines for the product line.\nBuild clean, maintainable, and production-ready code with a strong focus on quality.\nContribute to backend architecture, drive technical decisions and document solutions for reliable deployment and operations.\nEnsure proper test coverage with unit and integration tests.\nTake ownership of performance, scalability and cost efficiency within your domain.\nMaintain production reliability through monitoring, alerting, dashboards, and runbooks.\nInvestigate and resolve production issues, including deep-dive analysis of complex cases.\nWork in a strong engineering culture with testing, continuous delivery and DevOps practices.\nCollaborate closely with product and engineering teams to deliver new features and improve existing services.\nWe offer:\nThe opportunity to suggest and implement your own ideas that directly influence the product and its mass production\nA place in a fast-growing company with a motivated and professional team\nCompetitive salary\nMedical insurance\nEnglish classes\nThe opportunity to participate in Ajax’s internal beta-testing program for security systems \nDiscounts from partner companies\nDiscounts on Ajax products\nAjax Systems is a Ukrainian success story that has grown into a global product. Ajax devices are trusted by more than 4.5 million end users and 330,000 PRO users in over 180 countries. The company provides comprehensive solutions to protect residential and commercial properties of all sizes. Today, Ajax portfolio includes 280 devices for intrusion protection, video surveillance, fire safety, and comfort and automation.","description_format":"text","description_chars":3320,"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":[]},"benefits":["Health insurance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Smart Home Devices","Access Control & Alarm Systems"],"lifecycle":[{"event":"open","at":"2026-11-04T16:21:06Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":2,"expected_fill_days":83,"reasons":["conf:4","velocity","win:early","comp:brand"],"computed_at":"2026-11-07T05:47:08Z"},"pay":null,"html_url":"https://alion.io/job/ajax-systems-senior-java-developer-smart-home-2","json_url":"https://alion.io/job/ajax-systems-senior-java-developer-smart-home-2.json","meta":{"generated_at":"2026-11-07T08:16:03Z","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":4549,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-08T00:00:00Z"}},"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":3575},"rest":"https://alion.io/mcp/rest/get_company?id=3575"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fajax-systems-senior-java-developer-smart-home-2"},{"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%2Fajax-systems-senior-java-developer-smart-home-2"},{"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%2Fajax-systems-senior-java-developer-smart-home-2"},{"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/ajax-systems-senior-java-developer-smart-home-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fajax-systems-senior-java-developer-smart-home-2"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3754031}},{"tool":"search_jobs","arguments":{"company":"ajax.systems","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3754031},"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. 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