Senior Java Developer (Smart Home)

Ajax Systems, an international tech company and the largest manufacturer of security systems in Europe, is looking for a new team member to join its System divisions as a Senior Java Developer.

The System Division is responsible for building and developing the Ajax software ecosystem, which includes OS Malevich and the Video Management System, scalable cloud infrastructure, and client applications for multiple platforms.

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.
• Collaborate closely with product and engineering teams to deliver new features and improve existing services.

Requirements:

• 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, key-value databases, and in-memory storage solutions.
• Practical experience with Kubernetes.
• Experience with Git, Gradle, or other CI/CD tools.
• Strong knowledge of unit testing and automated testing approaches.

Nice to Have:

• Experience with Redis, Netty, Akka, NATS, AWS, Kafka, MongoDB, gRPC.
• Practical experience with Kotlin.
• Desire to grow into a team leadership role.

What We Offer:

• 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.
• English classes.
• The opportunity to participate in Ajax’s internal beta-testing program for security systems.
• Discounts from partner companies.
• Discounts on Ajax products.