Middle/Senior Java Developer (Fibra)

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.

Required skills

• 3+ 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.

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.

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;

• 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