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Senior Java Developer (Smart Home)

Ajax Systems· System Department – Cloud Development Department
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LvivFull-timePosted 4d ago

About the role

Senior backend role focusing on high-load Java systems within Ajax Systems' Smart Home team, designing and developing core backend services, ensuring performance, reliability and scalability in a distributed cloud environment.

Responsibilities

  • design and develop core backend services and data pipelines for the product line
  • Build clean, maintainable, and production-ready code with a strong focus on quality
  • Contribute to backend architecture, drive technical decisions, and document solutions for reliable deployment and operations
  • Ensure proper test coverage with unit and integration tests
  • Take ownership of performance, scalability, and cost efficiency within your domain
  • Maintain production reliability through monitoring, alerting, dashboards, and runbooks
  • Investigate and resolve production issues, including deep-dive analysis of complex cases
  • Work in a strong engineering culture with testing, continuous delivery and DevOps practices
  • Collaborate closely with product and engineering teams to deliver new features and improve existing services

Qualifications

  • 5+ years of commercial experience in backend development with Java in an enterprise environment
  • Strong understanding of Java Concurrency and hands-on experience with concurrent programming in production systems
  • Solid understanding of SOA, microservices and event-driven architecture
  • Practical experience with cloud computing platforms
  • Experience building and supporting high-load, scalable, and highly available systems
  • Hands-on experience with messaging brokers
  • Strong understanding of modern backend infrastructure, NoSQL
  • Practical experience with Kubernetes
  • Experience with Git, Gradle or othet CI/CD tools
  • Strong knowledge of unit testing and automated testing approaches

Skills

Required:Java backend developmentJava ConcurrencySOA, microservices and event-driven architectureCloud computingHigh-load, scalable, highly available systemsMessaging brokersNoSQLKubernetesCI/CD tools (Git, Gradle)Testing (unit/integration)

Benefits

  • the opportunity to suggest and implement your own ideas that directly influence the product and its mass production
  • A place in a fast-growing company with a motivated and professional team
  • Competitive salary
  • Medical insurance
  • Corporate English classes
  • The opportunity to participate in Ajax’s internal beta-testing program for security systems
  • Discounts from partner companies
  • Discounts on Ajax products
  • Turn on screen reader support
Last updated Oct 21, 2026. Interested? Apply on the company site.
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About Ajax Systems

Rule your space

Ajax alarm system includes everything you need to protect your property | Professional home security system that combines CCTV, fire alarm and automation

intrusion protectionvideo surveillancefire and life safetyautomationCCTVfire alarmautomationremote sites
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