Senior Java Developer job description

A Senior Java Developer is responsible for designing, developing, and maintaining high-performance, scalable Java-based applications and systems, providing technical leadership to development teams to drive project success and innovation.

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What is a Senior Java Developer?

A Senior Java Developer is an experienced software engineering professional who specializes in using the Java programming language and related technologies to build robust, enterprise-level applications. This role represents an advanced career stage where technical expertise is combined with leadership responsibilities. Senior Java Developers typically have 5+ years of hands-on experience, deep knowledge of Java ecosystems, and a proven track record of delivering complex software solutions. They serve as technical authorities within their organizations, mentoring junior developers, making architectural decisions, and ensuring code quality and system reliability through best practices and modern development methodologies.

What does a Senior Java Developer do?

Senior Java Developers design and implement complex software solutions using Java and JVM technologies, often working on both front-end and back-end components. They lead technical design sessions, create architectural diagrams, and make critical technology stack decisions. Their responsibilities include writing clean, efficient code; conducting code reviews; optimizing application performance; and troubleshooting complex system issues. They collaborate with cross-functional teams including product managers, QA engineers, and DevOps specialists to ensure seamless integration and deployment. Additionally, they mentor junior developers, establish coding standards, research emerging technologies, and contribute to continuous improvement of development processes and methodologies.

Job Overview

We are seeking an experienced Senior Java Developer to join our dynamic technology team. This role requires a deep understanding of Java ecosystem, microservices architecture, and cloud-native development practices. The ideal candidate will design, develop, and maintain high-performance, scalable applications while mentoring junior developers and contributing to architectural decisions.

Senior Java Developer responsibilities include:

1. Design and develop robust, scalable Java-based applications using Spring Boot and microservices architecture 2. Implement RESTful APIs and integrate with various third-party services and databases 3. Write clean, efficient, and well-documented code following industry best practices and coding standards 4. Perform code reviews, provide technical guidance, and mentor junior development team members 5. Collaborate with cross-functional teams including product managers, QA engineers, and DevOps specialists 6. Troubleshoot, debug, and optimize application performance across development and production environments 7. Participate in agile development processes including sprint planning, daily stand-ups, and retrospective meetings 8. Implement CI/CD pipelines and ensure smooth deployment processes using Jenkins/GitLab CI
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Must-Have Requirements

1. Bachelor's degree in Computer Science, Engineering, or related technical field 2. 5+ years of professional Java development experience with deep understanding of Java 8+ features 3. Strong expertise in Spring Framework (Spring Boot, Spring MVC, Spring Data, Spring Security) 4. Experience with relational databases (MySQL, PostgreSQL) and SQL optimization techniques 5. Proficiency in building and consuming RESTful web services and API design principles 6. Solid understanding of software development principles, design patterns, and clean code practices 7. Experience with version control systems (Git) and collaborative development workflows 8. Knowledge of testing frameworks (JUnit, Mockito) and test-driven development methodologies

Preferred Qualifications

1. Master's degree in Computer Science or related technical discipline 2. Experience with cloud platforms (AWS, Azure, or Google Cloud Platform) and containerization (Docker, Kubernetes) 3. Knowledge of message brokers and streaming platforms (Kafka, RabbitMQ) 4. Familiarity with front-end technologies (React, Angular, or Vue.js) and full-stack development 5. Experience with NoSQL databases (MongoDB, Cassandra, or Redis) 6. Previous experience in financial technology, e-commerce, or SaaS product development 7. Certification in Java development or cloud technologies (AWS Certified Developer, Java SE Programmer) 8. Experience working in agile/scrum environments with tools like JIRA and Confluence

Bonus Skills

1. Contributions to open-source Java projects or active GitHub portfolio 2. Experience with performance tuning and application monitoring tools (New Relic, Datadog) 3. Knowledge of security best practices and compliance standards (OWASP, PCI DSS) 4. Experience with infrastructure as code tools (Terraform, CloudFormation) 5. Familiarity with reactive programming (Project Reactor, RxJava) 6. Previous mentorship experience or technical leadership responsibilities 7. Public speaking experience at tech conferences or meetups 8. Patent filings or published technical papers in software development

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