Middle 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 Middle Java Developer in Lviv.

Responsibilities:

Design and implement core backend services and data pipelines;
Write clean, readable, and maintainable codeDevelop services for the b2b product line;
Actively participate in developing and improving architecture;
Document architectural decisions and operational knowledge for successful deployment and service operations;
Ensure appropriate test coverage with unit and integration testingFocus on performance and cost efficiency for 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, 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: 3+ years of professional backend development in enterprise environment;
Java Concurrency: Strong understanding and practical application experience;
Understanding of SOA, microservice, and event-driven architecture;
Cloud development principles with practical AWS experience;
Ability to scale and ensure high availability of loaded systems

Required:

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 test 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

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Middle Java Developer

Key Skills

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