senior java software engineer (remote)

Qualifications and Technologies

Core Languages & Frameworks (Advanced Proficiency):

• Java (Versions 11+):

o Deep understanding of concurrency, multi-threading, and performance optimization.

o Expertise in JVM internals and garbage collection.

•  Spring Framework (Spring Boot 3+):

o Advanced Spring Boot features (e.g., reactive programming, security).

o Spring Cloud Stream (Kafka integration).

o Spring Integration.

• Apache Kafka (Versions 3+):

o Kafka Streams, Kafka Connect, KSQLdb.

o Advanced Kafka configuration and tuning.

o Kafka security (ACLs, Kerberos).

o Kafka monitoring and performance troubleshooting

•  Camunda Platform 7 & 8:

o BPMN 2.0 and DMN modeling.

o Camunda Zeebe (for cloud-native orchestration).

o Camunda integration with external systems.

o Camunda monitoring, and performance tuning.

Data Management & Persistence:

• Relational Databases (PostgreSQL, MySQL, Oracle):

o Basic SQL and database optimization.

o Database sharding and replication.

• Elasticsearch/OpenSearch:

o Log aggregation and analysis.

o Text search implementation.

• Oracle Database

o Basic Data Warehousing and Analytics

o Performance monitoring and Troubleshooting

Microservices & API Development:

• RESTful APIs & GraphQL:

o API design best practices.

o API security (OAuth 2.0, JWT).

• gRPC:

o High performance microservice communication

Cloud & Containerization (Basic Level)

• Cloud Platforms (AWS, Azure, GCP):

o Serverless computing (AWS Lambda, Azure Functions).

o Cloud-native architecture.

o Cloud security

Docker & Kubernetes:

o Kubernetes deployments and scaling.

o Kubernetes operators.

o Helm Charts.

• Jenkins Basic Knowledge

Other Critical Skills:

• Software Architecture & Design Patterns:

o Microservices architecture, event-driven architecture, CQRS, Event Sourcing.

• Performance Tuning & Optimization:

o Identifying and resolving performance bottlenecks.

• Security Best Practices:

o Secure coding practices, vulnerability management.

• Agile & DevOps Methodologies
• Leadership and Mentoring:

o Guiding and mentoring junior developers.

• Domain Driven Design (DDD):

o Designing complex systems around business domains

Let’s talk about us:

• Hybrid working model
• A competitive salary
• 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.
• Free Lunch/Snack every day & Cocktail Fridays @ our offices.
• Referral Bonus.