Senior Full Stack Java Engineer

Job Description

Senior Java Engineer

Location: Remote (U.S. Based)
Terms: 6-month contract to hire

All candidates must be authorized to work in the United States without sponsorship now or in the future. This role is not open to C2C candidates or third-party vendors.

Capstone IT is helping our client to hire a Senior Full Stack Java Developer to design, develop, and support modern enterprise applications that drive business growth initiatives. This role requires strong experience building cloud-native applications, microservices, APIs, event-driven systems, and modern user interfaces while collaborating across business and technical teams.

This is new development with a focus on back end and middleware to connect existing legacy systems to new systems.

Responsibilities

• Lead the design, development, testing, integration, and support of enterprise applications and services.
• Build scalable full-stack applications using Java, Spring Boot, and React.
• Design, develop, and maintain RESTful APIs and microservices.
• Develop and support event-driven solutions and messaging integrations.
• Collaborate with business stakeholders, architects, developers, and external vendors to deliver technology solutions.
• Evaluate technical approaches and recommend scalable, maintainable solutions.
• Build and maintain automated testing frameworks and quality processes.
• Optimize application performance, reliability, and scalability.
• Contribute to CI/CD pipelines, deployment automation, and DevOps best practices.
• Mentor team members and contribute to engineering standards and best practices.
• Leverage AI-assisted and agentic development tools to improve software delivery.

Required Skills & Qualifications

• Java (11-21)
• Spring Boot
• REST API development
• Microservices architecture
• AWS cloud services
• Apache Kafka and event-driven architecture
• MongoDB or similar NoSQL database
• Docker/Kubernetes in cloud environments
• CI/CD pipelines
• Familiarity with AI agentic software development tools and practices.

Nice to have

• Gradle/Groovy
• React (17-19)
• MuleSoft or API Gateway

Education and Experience

• 10+ years of software development experience in enterprise environments.
• Bachelor's degree in Computer Science from a U.S.-based accredited university
• Experience working with large insurance companies.

Capstone Consulting is an EEO employer.

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