Senior Java Software Engineer

We are looking for a Senior Java Software Engineer to join our engineering team and focus on performance optimization and scalability of distributed systems. This is a senior-level position (7+ years), ideal for engineers who can take ownership of backend performance challenges in mission-critical production environments.

Key Responsibilities

• Optimize and scale distributed applications using Java (8–21+), Spring Boot, and WildFly.
• Tune JVM performance (GC strategies, profiling).
• Work on containerized deployments using Kubernetes and Docker.
• Design RESTful services with strong HTTP knowledge.
• Manage secure service-to-service communication (OAuth2, OIDC).
• Optimize Oracle SQL queries, indexes, and performance.
• Implement observability using Grafana, ELK, and load testing tools (JMeter, Gatling).
• Maintain high-quality codebases following Clean Code and Clean Architecture principles.
• Collaborate within agile teams and communicate effectively with stakeholders.

• 7+ years of experience in software engineering with Java.

• Strong experience in scalable, high-availability backend systems.
• Proven expertise in Spring Boot, WildFly, and distributed architecture.
• Proficiency in Oracle SQL tuning, RabbitMQ, Redis, Git, Maven/Gradle.
• Familiarity with microservices, event-driven and streaming architectures.
• Good understanding of Linux systems, scripting, observability, and security patterns.
• Fluency in both Greek and English (written and spoken).
  

You will be a great candidate for us if you:

• Thrive in complex, high-load systems.
• Are detail-oriented and analytical.
• Enjoy mentoring and working collaboratively.
• Are proactive and comfortable in agile setups.

Why join inventYOU

• Work on challenging high-performance systems.
• Hybrid model for flexibility.
• Be part of a mature engineering culture.
• Access to continuous learning and upskilling support.