Senior Java Developer

About the Company Cogent Infotech is a technology and talent solutions company headquartered in Pittsburgh, PA. We support clients across commercial, federal, state, and local markets with services in digital transformation, application development, cloud, cybersecurity, data analytics, artificial intelligence, and workforce solutions. At Cogent Infotech, developers get the opportunity to work on enterprise technology projects, build scalable applications, and grow their careers through collaboration, continuous learning, and hands-on project exposure. Job Title: Senior Java Developer Experience: 5-10 Years Employment Type: Full-time Work Location: On-site / Relocation within the U.S. may be required Summary Build Scalable Enterprise Applications with Modern Java! Cogent Infotech is seeking Senior Java Developers with 5 to 10 years of strong hands-on experience in designing, developing, and maintaining scalable enterprise applications. Java is the primary and mandatory programming language for this role. The ideal candidate must have deep experience in Java-based back-end development, Spring Boot, RESTful APIs, microservices, databases, and modern software engineering practices. This role is best suited for candidates who can independently work on application development, API integration, debugging, performance optimization, production support, and technical delivery. Exposure to cloud platforms, front-end technologies, AI tools, automation, or emerging technologies will be an added advantage. Applicants must have authorization to work in the United States that permits full-time employment for the duration of the position without requiring current or future employer sponsorship. Primary Skills : Core Java, Spring Boot, Spring Framework, RESTful API Development, Microservices Architecture, Hibernate / JPA, SQL databases such as MySQL, PostgreSQL, or Oracle, Object-Oriented Programming, Design Patterns, Git, Maven or Gradle, Unit Testing using JUnit or Mockito Secondary Skills: Apache Kafka or RabbitMQ, Docker and Kubernetes, Redis / Caching, CI/CD tools such as Jenkins, GitHub Actions, or GitLab, Cloud platforms such as AWS, Azure, or Google Cloud Platform, Application security best practices, OAuth2 and JWT, Monitoring and logging tools such as ELK or Splunk, Basic front-end exposure to HTML, CSS, JavaScript, React, or Angular, AI tools, automation, or emerging technology exposure What You'll Do As a Senior Java Developer, you will: Design, develop, and maintain scalable enterprise applications using Java as the core programming language. Build and support back-end services using Spring Boot, Spring Framework, RESTful APIs, and microservices. Develop and maintain APIs for application functionality, system integration, and communication between platforms. Work with microservices-based applications focused on scalability, reliability, performance, and maintainability. Participate in the complete software development lifecycle, including requirement analysis, design, development, testing, deployment, maintenance, and production support. Work with relational databases, SQL queries, data modeling, stored procedures, Hibernate/JPA, and database optimization. Write clean, efficient, secure, and maintainable Java code. Support unit testing, debugging, troubleshooting, performance tuning, and code optimization. Contribute to technical design discussions, architecture reviews, and solution planning. Collaborate with cross-functional teams, QA teams, business stakeholders, and project managers to deliver high-quality solutions. Participate in code reviews and promote coding standards, documentation, and development best practices. Guide junior developers when required and support team-level technical growth. Use AI tools, automation practices, and emerging technologies where applicable to improve productivity and application capabilities. What We're Looking For 5 to 10 years of hands-on experience in Java application development, back-end development, or enterprise software development. Strong hands-on experience in Java is mandatory. Strong experience with Spring Boot, Spring Framework, RESTful APIs, and microservices. Solid understanding of object-oriented programming, design patterns, and clean coding principles. Experience with Hibernate/JPA and database-driven application development. Strong working knowledge of SQL and relational databases such as MySQL, PostgreSQL, or Oracle. Experience with unit testing, debugging, troubleshooting, and production support. Ability to analyze complex requirements, identify technical challenges, and deliver effective solutions. Good verbal and written communication skills. Ability to work independently and collaborate with technical and non-technical teams. Willingness to relocate within the U.S. for project assignments, if required. Preferred Skills & Certifications Experience with Kafka, RabbitMQ, Redis, or other messaging/caching tools. Knowledge of Docker, Kubernetes, and containerized application development. Exposure to cloud platforms such as AWS, Azure, or Google Cloud Platform. Experience with CI/CD tools such as Jenkins, GitHub Actions, or GitLab. Knowledge of OAuth2, JWT, and application security best practices. Experience with monitoring and logging tools such as ELK or Splunk. Familiarity with Agile/Scrum development methodologies. Basic exposure to front-end technologies such as HTML, CSS, JavaScript, React, or Angular is a plus. Java, cloud, or application development certifications are a plus. Exposure to AI tools, automation, or emerging technologies is an added advantage. Salary : USD 80,000-150,000 per annum. Equal Opportunity Employer Cogent Infotech is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment where everyone feels welcome and valued. We do not discriminate based on race, color, religion, national origin, age, sex, pregnancy, childbirth or related medical conditions, genetic information, sexual orientation, gender identity, military status, citizenship, disability, or any other class protected by applicable law. Join Us At Cogent Infotech, your ideas matter. Join a team that values innovation, collaboration, and continuous growth. Build your career as a Senior Java Developer while working on meaningful enterprise technology projects that create real impact.