Senior Java Developer

Responsibilities:

• Lead and participate in requirement analysis, solution design, technical estimation, development planning, and implementation for UPOS & DA application initiatives.
• Translate business and user requirements into clear functional and technical specifications that meet business, security, performance, and operational requirements.
• Design, develop, test, and maintain secure, scalable, low-latency, and highly available backend applications using Java, Spring Boot, RESTful APIs, Solace JMS, and database technologies.
• Develop new business features and reusable software components in accordance with approved technical specifications, coding standards, secure development practices, and organizational policies.
• Contribute to application modernization and migration initiatives, including legacy application transformation, Java and Spring Boot framework modernization, and deployment to RHEL, container, or cloud environments.
• Review application architecture, source code, database design, interfaces, and deployment approaches to ensure quality, maintainability, performance, resilience, and operational readiness.
• Conduct code and design reviews, provide technical guidance to developers, and promote software engineering best practices and knowledge sharing within the team.
• Develop and maintain accurate technical documentation, including solution designs, technical specifications, interface specifications, application flows, unit test plans, deployment procedures, and operational support guides.
• Support unit testing, application integration testing, system testing, user acceptance testing, release preparation, production deployment, and post-implementation verification.
• Work closely with QA, DevOps, cybersecurity, infrastructure, production support, business stakeholders, vendors, banks, and payment schemes to coordinate application delivery and resolve technical dependencies.
• Troubleshoot application issues through log analysis, performance analysis, and root cause investigation across development, testing, and production environments.
• Provide application support before and after production deployment, implement bug fixes, and ensure preventive and corrective actions are completed promptly.
• Ensure solutions comply with PCI-DSS, cybersecurity controls, secure coding practices, data protection requirements, organizational policies, and applicable payment scheme mandates.

Requirements:

• Bachelor's degree in Computer Science, Information Technology, Software Engineering, or a related discipline.
• Minimum 8 to 10 years of relevant application development experience, including hands-on involvement across the full software development lifecycle and experience operating in a senior developer or technical lead capacity.
• Strong proficiency in Java 17 or later, server-side Java technologies, Spring Framework, and Spring Boot.
• Strong experience designing and developing microservices, RESTful APIs, web services, distributed applications, and service-oriented architectures.
• Hands-on experience with technologies such as Linux or RHEL, Spring Boot, Solace JMS, MySQL or PostgreSQL, SSL/TLS, and JSON-based interfaces.
• Good understanding of object-oriented design, software design patterns, secure coding practices, unit testing, and application performance optimization.
• Demonstrated experience developing or supporting low-latency, high-throughput, highly available, and business-critical transaction processing systems.
• Experience with software development methodologies, including Agile and Waterfall, and engineering tools such as Git, Jenkins, JIRA, Maven or Gradle, and automated testing frameworks.
• Experience with CI/CD pipelines, application monitoring, log analysis, observability, production deployment, incident resolution, and root cause analysis.
• Experience with container or cloud deployments and technologies such as Docker, Kubernetes, OpenShift, or AWS will be an advantage.
• Experience in payment systems, online payment transaction flows, transaction switching, retail POS, e-commerce, card authorization, or payment gateway integration is strongly preferred.
• Working knowledge of PCI-DSS, payment security controls, encryption, cryptographic concepts, SSL/TLS, access control, and audit requirements will be an advantage.
• Strong analytical, problem-solving, communication, stakeholder-management, and technical leadership skills.
• Proactive and collaborative team player who can work independently with minimal supervision and perform effectively in a dynamic, fast-paced, and regulated environment.