Senior Java Developer

Required skills:

• 8+ 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 othet CI/CD tools.
• Strong knowledge of unit testing and automated testing approaches.

Would be a plus:

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

What you will do:

• 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.

Why this role is interesting:

• opportunity to work on high-load backend systems and distributed architecture.
• Real impact on core product development and architectural decisions.
• Modern technology stack and engineering-driven environment.
• Challenging tasks where performance, reliability and scalability truly matter.

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