Senior Java Developer

Ajax Systems is an international technological company and Europe’s largest security system manufacturer. In addition, the company offers solutions for video surveillance, smart homes, fire detection, and flood prevention. The product portfolio includes 180 wireless and wired devices for security and automation. Today, Ajax protects over 3.5 million users in 187 countries worldwide. The company employs 4,100 specialist. We are looking for a smart, experienced, and technically proficient Senior Java Developer. Responsibilities:

Design and implement core backend services and data pipelines

Write clean, readable, and maintainable code

Develop services for the B2B product line

Actively participate in developing and improving the architecture

Document architectural decisions and operational knowledge for successful deployment and service operations

Ensure appropriate test coverage with unit and integration testing

Focus on performance and cost efficiency within your areas of responsibility

Follow best practices in software design and development and promote them within the team

Ensure reliable alerting, dashboards, and runbooks for production services

Debug production issues, analyze complex cases, and conduct investigations

Work smoothly in a technical culture with testing, CI/CD, and DevOps

Collaborate within the team and with other engineering teams to develop new features and products according to business needs

Required Experience:

Java: 6+ years of professional backend development in an enterprise environment

Java Concurrency: strong understanding and practical hands-on experience

Understanding of SOA, microservices, and event-driven architecture

Cloud development principles with practical AWS experience

Ability to scale and ensure high availability of high-load systems

Technical Requirements:

Kafka, MongoDB, Redis

Enterprise-grade stack (messaging brokers, in-memory storages, NoSQL, key-value databases)

Docker and Kubernetes (containerized applications)

Spring

Git, Gradle

Nice to Have:

Kotlin: knowledge and practical work experience

Netty, gRPC, Project Reactor, NATS

Strong knowledge of unit testing and automated testing paradigms

We offer:

the opportunity to share and implement your own ideas that could impact products and production

work with a motivated team and an environment with a zero-bullshit culture

competitive salary

medical insurance

corporate English classes

compensation for professional training

the chance to take part in beta testing of Ajax security systems — receive and test new devices before their release