Senior Java Developer

Job Description

Senior Java Developer - Microservices & Legacy Modernization

We are seeking a Senior Java Developer with a minimum of 12 years of professional, hands-on Java development experience (15-18 years preferred) to support a large-scale legacy modernization initiative.

This role is focused on transforming monolithic applications into microservices-based architectures, as well as supporting the transition from on-premise systems to hybrid cloud environments. The ideal candidate has deep experience modernizing enterprise platforms and building highly scalable, distributed systems.

You will work on mission-critical applications as part of a high-performing engineering team, contributing across the full software development lifecycle.

This role is onsite, Monday through Friday, and requires a 2nd interview to be completed onsite. A light on call rotation is required every 14-16 weeks after training is completed.

Key Responsibilities

• Lead and contribute to modernization efforts from monolith to microservices architectures
• Support migration strategies from on-prem systems to hybrid cloud environments
• Design, develop, and maintain scalable, enterprise-grade applications in distributed environments
• Write clean, efficient, and testable Java code
• Participate in architecture, design, development, testing, and deployment
• Debug, troubleshoot, and resolve production issues
• Prepare and manage code releases
• Collaborate with cross-functional teams to deliver technical solutions
• Contribute to continuous improvement and engineering best practices
• Experience working in secure enterprise environments

Required Technical Skills

• Java / Core Java (versions 8-17; extensive hands-on experience)
• Spring Framework (Spring Boot, Spring Data, Spring Cloud)
• Microservices architecture
• REST API's; REST & SOAP web services development
• JPA2 / Hibernate (HQL, JPQL, Criteria APIs)
• Object-Oriented Design & Design Patterns
• Domain Driven Design (DDD) concepts
• Kafka
• MongoDB
• Oracle and SQL Server
• WebLogic 14+ or similar application servers
• JUnit, Mockito
• Tools: Git, Gradle, IntelliJ/Eclipse, Ant, SQL Developer (Oracle 19c)

Highly Preferred Technical Qualifications

• Azure DevOps experience
• Experience with containerization technologies (Docker, Kubernetes)
• Familiarity with UI component libraries
• Agile development experience

Required Qualifications

• Bachelor's degree in Computer Science or related field (or equivalent experience)
• Minimum 12 years of hands-on, professional Java development experience (REQUIRED)
• Proven experience in legacy modernization initiatives, including:
• Monolith to microservices transformation
• On-premise to hybrid cloud migration

Capstone Consulting is an EEO employer.

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