Middle/Senior Java Developer (Security Systems)

Location: Kyiv, Ukraine — on-site

Company

hirify.global is an international technology company manufacturing wireless and wired security and automation devices used by millions of users worldwide.

What you will do

• Design and implement core backend services and data pipelines for manufacturing operations.
• Develop services for the B2B product line and contribute to system architecture.
• Document architectural decisions and operational knowledge for deployment and service operations.
• Maintain unit and integration test coverage and improve performance and cost efficiency.
• Build reliable alerting, dashboards, and runbooks for production services.
• Debug production issues, investigate complex cases, and collaborate with engineering teams on new features.

Requirements

• 4+ years of professional Java development experience in an enterprise environment.
• Strong understanding and practical experience with Java concurrency.
• Strong Kotlin knowledge or solid Java expertise with willingness to transition to Kotlin.
• Practical experience with Spring, SQL, and analytical databases such as Databricks, BigQuery, or ClickHouse.
• Understanding of SOA, microservices, event-driven architecture, AWS, and cloud development principles.
• Experience building and scaling high-load systems with a focus on high availability and reliability.

Nice to have

• Experience with Angular, React, or Vue.
• Experience with Power BI.

Culture & Benefits

• Opportunity to implement ideas affecting products and production.
• Motivated technical team with a direct communication culture.
• Medical insurance.
• Corporate English classes and compensation for professional training.
• Opportunity to beta-test new Ajax security devices before release.

Hiring process

• Artificial intelligence tools may support application, resume, and response review.
• Final hiring decisions are made by people.