Senior Java Software Engineer
full-time•Athens
About this role
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).
- Thrive in complex, high-load systems.
- Are detail-oriented and analytical.
- Enjoy mentoring and working collaboratively.
- Are proactive and comfortable in agile setups.
- Work on challenging high-performance systems.
- Hybrid model for flexibility.
- Be part of a mature engineering culture.
- Access to continuous learning and upskilling support.
What you'll do
- The Senior Java Software Engineer will optimize and scale distributed applications, tune JVM performance, and design RESTful services. They will also manage secure service-to-service communication and implement observability tools.
About InventYOU AB
inventYOU is an IT Consulting firm founded in Sweden in 2017.
At inventYOU we offer senior professional IT services. Our consultants have extensive experience in the industry and throughout the years have assisted our customers in their successful digital transformation journeys.
InventYOU can offer a wide variety of nearshoring professional IT services in various technology stacks from Athens, Greece. This enables inventYOU to provide customers a large pool of highly educated, skilled and experienced IT-professionals at very competitive prices. Working in the same time zone, with Swedish speaking account management allows for a solid and transparent delivery. This collaboration also provides limited travel if the customer and project require an on-site presence.
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Frequently Asked Questions
What does a Senior Java Software Engineer do at InventYOU AB?
As a Senior Java Software Engineer at InventYOU AB, you will: the Senior Java Software Engineer will optimize and scale distributed applications, tune JVM performance, and design RESTful services. They will also manage secure service-to-service communication and implement observability tools..
Is the Senior Java Software Engineer position at InventYOU AB remote?
The Senior Java Software Engineer position at InventYOU AB is based in Athens, Attica, Greece. Contact the company through Clera for specific work arrangement details.
How do I apply for the Senior Java Software Engineer position at InventYOU AB?
You can apply for the Senior Java Software Engineer position at InventYOU ABdirectly through Clera. Click the "Apply Now" button above to start your application. Clera's AI-powered platform will help match your profile with this opportunity and guide you through the application process.