java software engineer

Our FinTech project is for the second-largest Greek bank by total assets and the largest by market capitalization of €2.13 billion. It has a subsidiary and branch in London, England and subsidiaries in Albania, Cyprus and Romania. ​

Language Requirement: English, Greek

Minimum Years of Experience: 5

Key Responsibilities

• Leading analysis, design, development and optimization initiatives across enterprise-level applications.

• Identifying performance bottlenecks and implementing solutions to improve system scalability, efficiency and reliability.

• Ensuring application performance and stability under high-load and mission-critical conditions.

• Contributing to architectural improvements, modernization initiatives and technical debt reduction.

• Optimizing distributed systems, microservices and event-driven architectures.

• Performing JVM tuning, system profiling and database optimization.
  Supporting deployment processes, monitoring application health and contributing to ongoing system stability.

• Collaborating closely with engineering, architecture, DevOps and other technical teams to deliver robust and scalable solutions.

Required Qualifications

• Strong professional experience in enterprise-level Java development.

• Strong hands-on expertise with Java, Spring Boot, Hibernate, JPA and JavaEE/JakartaEE.

• Proven experience in performance optimization, performance tuning and scalability improvements within distributed systems.

• Hands-on experience with Kubernetes, Docker and containerized environments.

• Solid knowledge of Oracle SQL optimization, query performance and database tuning.

• Strong experience with JVM tuning, profiling and troubleshooting.

• Experience designing and working with microservices and event-driven architectures.

• Experience with messaging technologies such as RabbitMQ.
  Familiarity with monitoring and observability tools such as Grafana and ELK Stack.

• Experience with load and performance testing tools such as JMeter or Gatling.

• Strong understanding of REST APIs, OAuth2/OIDC and system integration patterns.

• Ability to work effectively with high-load, highly available and mission-critical systems.

• Strong analytical and problem-solving capabilities.

• Excellent communication, collaboration and stakeholder-management skills.

Tech Stack

• Java | Spring Boot | Hibernate | JPA | JavaEE/JakartaEE | Microservices | Kubernetes | Docker | Oracle SQL | RabbitMQ | REST APIs | OAuth2/OIDC | Grafana | ELK | JMeter | Gatling | JVM Profiling & Tuning

Nice-to-Have Skills

• Experience with JMeter or Gatling.

• Familiarity with Grafana and ELK Stack.

• Experience with RabbitMQ.

• Knowledge of event-driven architectures.

• Familiarity with OAuth2/OIDC.

Salary (Ind.): 3200-3600 € / Per month Gross

Let’s Talk About Us

• Hybrid working model.

• Signing Bonus.

• Brand new equipment.

• Exciting & friendly work environment.

• Career & competencies’ development.

• Continuous learning & development experience based on infinity model through Code.Hub’s Code.Learn.

• L&D plan for your career improvement.

• A truly open, inclusive, and competitive-free environment to grow your skills and have fun!

• Internal competitions & rewards.

Let’s Talk About Code.Hub-ers

• You are eligible to free LinkedIn trainings.

• You are eligible to have free pass to all training Code.Learn activities after 6 months from your induction.

• Training & Tech Mentor for your induction.

• Unlimited access to LinkedIn Learning platform (1st semester).

• Sponsoring of a Bachelor and/or Master’s Degree from Athens Tech College.

• Private Health Insurance.

• Performance planning each six months and each two years planning of promotion.

• Cocktail Fridays @ our offices.

• Referral Bonus.