Globaldev Group

Senior Java Developer

Globaldev Group

full-time

Posted on:

Origin:  • 🇵🇱 Poland

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Job Level

Senior

Tech Stack

Distributed SystemsDockerGrafanaJavaJMeterKubernetesMicroservicesMongoDBNoSQLPrometheusSpringSpring BootSpringBootSQL

About the role

  • Take ownership of complex backend systems and lead technical architecture decisions;
  • Design, build, and optimize scalable, reliable backend services and APIs using Java and Spring Boot;
  • Own full development lifecycle: requirements analysis, design, coding, testing, deployment, and production monitoring;
  • Lead initiatives to improve system scalability, performance, and security;
  • Collaborate with Product, Algo, DevOps, BI, and Marketing to deliver integrated business-driven solutions;
  • Ensure observability with robust logging, metrics, and alerting (Prometheus, Grafana, Kibana);
  • Drive adoption of engineering best practices, code quality standards, and technical documentation;
  • Mentor and guide junior developers, fostering knowledge sharing and continuous improvement.

Requirements

  • Bachelor’s degree in Computer Science or equivalent practical experience;
  • 5+ years of professional Java development experience;
  • Proven track record in designing and delivering complex distributed systems and microservices (Docker, Kubernetes);
  • Strong understanding of scalability, concurrency, and performance optimization challenges;
  • Hands-on experience with CI/CD tools and automated build/deployment pipelines;
  • Proficiency in Spring & Spring Boot frameworks;
  • Excellent communication skills and the ability to influence technical direction across teams;
  • Experience running applications on Kubernetes, focusing on designing scalable, resource-efficient services;
  • Ability to measure and improve application performance using profiling, benchmarking, and APM tools (e.g., JFR, JMeter, Micrometer, New Relic, Datadog).
  • (Will be a plus) Background with NoSQL databases (MongoDB, Couchbase) and SQL databases;
  • (Will be a plus) Knowledge of reactive programming (Spring WebFlux);
  • (Will be a plus) Familiarity with monitoring and alerting tools such as Prometheus, Grafana and Kibana.