Lead Java Developer

Job Role- Senior Java Developer

Location - Amsterdam, Netherlands

Job Description -

Job Summary

We are seeking an experienced Senior Java Backend Engineer with strong expertise in Java, Spring Boot, Microservices, Kafka, and API development. The ideal candidate should have hands-on experience in designing, developing, and deploying scalable enterprise-grade applications within an Agile environment. Experience in Banking, Financial Services, or large-scale distributed systems is highly preferred.

Mandatory Technical Skills

Core Java

• Java 11/17/21
• Object-Oriented Programming (OOP)
• Collections Framework
• Multithreading & Concurrency
• Memory Management & JVM Tuning
• Design Patterns
• Data Structures & Algorithms

Spring Ecosystem

• Spring Boot
• Spring MVC
• Spring Security
• Spring Data JPA
• Spring Cloud
• Spring Batch
• Spring AOP

Microservices

• Microservices Architecture
• API Gateway
• Service Discovery
• Circuit Breaker Pattern
• Distributed Tracing
• Event-Driven Architecture
• Saga Pattern
• Resilience4J

API Development

• RESTful APIs
• OpenAPI / Swagger
• API Security
• OAuth2
• JWT Authentication
• API Versioning
• Rate Limiting
• API Monitoring

Messaging & Streaming

• Apache Kafka
• Kafka Producers & Consumers
• Kafka Streams
• Schema Registry
• Event Processing
• Asynchronous Communication
• Message Queues

Database Technologies

• PostgreSQL
• Oracle
• MySQL
• MongoDB
• SQL Query Optimization
• Database Design
• Performance Tuning

Cloud & DevOps

Cloud Platforms

• AWS / Azure
• EC2
• EKS / AKS
• S3
• Lambda
• CloudWatch

Containerization

• Docker
• Kubernetes
• Helm Charts

CI/CD

• Jenkins
• Azure DevOps
• GitHub Actions
• Maven
• SonarQube

Additional Technical Skills

• Redis Caching
• Elasticsearch
• Linux/Unix
• Git
• Bitbucket
• Splunk
• Grafana
• Prometheus
• Postman
• JUnit
• Mockito
• Contract Testing
• Performance Testing

Responsibilities

• Design, develop, and maintain enterprise-grade Java applications.
• Develop scalable Microservices using Spring Boot.
• Build and consume REST APIs following industry best practices.
• Implement Kafka-based event-driven solutions.
• Collaborate with architects and product owners for solution design.
• Optimize application performance, scalability, and reliability.
• Troubleshoot production issues and perform root cause analysis.
• Implement secure coding practices and API security standards.
• Participate in code reviews and technical design discussions.
• Deploy and monitor applications in cloud environments.
• Ensure adherence to DevOps and CI/CD practices.
• Mentor junior engineers and contribute to technical excellence.

Nice to Have Skills

• Reactive Programming (WebFlux)
• GraphQL
• CQRS Pattern
• Domain Driven Design (DDD)
• Event Sourcing
• Camunda
• Terraform
• AI/GenAI Integration
• Kubernetes Operators
• OpenShift

Domain Experience

Preferred

• Banking & Financial Services
• Payments
• Retail Banking
• Lending
• Trade Finance
• Investment Banking

Soft Skills

• Excellent communication skills
• Client-facing experience
• Stakeholder management
• Problem-solving mindset
• Agile/Scrum experience

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