About the Company
Ajax Systems is an international tech company and the largest manufacturer of security systems in Europe. We’re looking for a Java Developer to join us and continue the evolution of a product that we love. The team focuses on the B2B segment at Ajax Systems. It develops software solutions for business partners, supports applications for monitoring and installation companies, and develops a tablet application for rapid response teams.
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.
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 other 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.
