Senior Java Developer

Traffic Label Limited

Senior Java Developer at Traffic Label, specializing in backend services for online marketing. Building scalable solutions with cross-functional teams in a fast-paced environment.

Posted 5/16/2026full-timeRemote • 🇺🇦 UkraineSeniorWebsite

Tech Stack

Tools & technologies

DockerElasticSearchGoogle Cloud PlatformGrafanaJavaKafkaKubernetesPostgresRDBMSSpringSpring BootSpringBootSQL

About the role

Key responsibilities & impact

Build scalable, testable backend solutions independently from requirements through to production deployment
Own services end-to-end and guide complex features through the full development lifecycle
Integrate third-party services according to business and technical requirements
Collaborate closely with Backend, Frontend, QA, and Infrastructure teams
Contribute to architecture discussions and help shape the technical roadmap
Mentor team members on best practices, troubleshooting, and system design
Monitor, profile, and optimise application and database performance
Design and execute high-load performance testing scenarios
Work on complex SQL tasks and performance optimisation using PostgreSQL
Handle large-scale datasets with a focus on scalability and reliability
Troubleshoot production issues using logs, metrics, alerts, and monitoring tools

Requirements

What you’ll need

Strong commercial experience with Java Core and Spring Framework / Spring Boot
Proven experience designing scalable systems using RDBMS and SQL
Hands-on experience with Docker and Kubernetes
Strong understanding of JSON, JWT, HTTP(S), REST APIs, and WebSockets
Practical experience with Netty and non-blocking I/O
Experience working with logging, monitoring, profiling, and alerting tools
Strong debugging and problem-solving skills
Good understanding of system security best practices
Intermediate English level or higher for international collaboration
Experience working with high-load systems and performance optimisation
Familiarity with technologies such as Kafka, GCP, Elasticsearch, Flyway, Grafana, and Kubernetes-based environments

Benefits

Comp & perks

Full remote work flexibility
Generous paid time off including vacation, sick leave, and public holidays
Strong growth and career development opportunities
Opportunity to work on scalable, high-performance systems using modern technologies
Collaborative, international, and fast-moving environment

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Java CoreSpring FrameworkSpring BootSQLPostgreSQLDockerKubernetesJSONREST APIsNetty

Soft Skills

problem-solvingdebuggingmentoringcollaborationcommunication