Senior Java Developer

Senior Java Developer

Experience:

Primary Skills (Must-have):

Location:

Key Responsibilities:

• Design, develop, and maintain high-performance, scalable backend systems using Java.
• Work on low-latency, high-throughput systems that power critical payment functionalities.
• Apply strong problem-solving skills using core CS fundamentals, DSA, and object-oriented programming.
• Lead system/architectural design discussions for complex business features.
• Collaborate with cross-functional teams to understand business requirements and translate them into technical solutions.
• Leverage AWS services to build and maintain cloud-native applications and services.
• Ensure security, compliance, and best practices in code and architecture, especially around financial transactions.
• Optimize system performance and resolve issues related to scalability and reliability.
• Participate in code reviews, mentor junior developers, and uphold clean code standards.

Must-Have Qualifications:

• 4+ years of hands-on experience in Java (Java 8+ preferred).
• Strong proficiency in Data Structures, Algorithms, and Object-Oriented Design.
• Experience designing scalable and distributed systems.
• Hands-on experience with AWS cloud ecosystem (EC2, S3, Lambda, RDS, etc.).
• Solid understanding of microservices architecture and RESTful API design.
• Familiarity with payment gateways, transaction processing, and real-time systems.
• Experience working with Spring / Spring Boot and related Java frameworks.
• Good understanding of SQL and NoSQL databases.
• Knowledge of messaging systems like Kafka, RabbitMQ, etc.

Preferred Skills:

• Exposure to event-driven architecture and domain-driven design (DDD).
• Experience with containerization (Docker, Kubernetes).
• Understanding of PCI DSS compliance and other financial regulations.
• Prior work on fraud detection, reconciliation systems, or payment rails (ACH, SWIFT, UPI, etc.).
• Familiarity with Agile methodologies and DevOps practices.