Senior Java Developer -Location: Alpharetta, GA (5 days onsite)

Senior Java Developer

Location: Alpharetta, GA (5 days onsite)

Duration: Long Term.

• Job Description-
• Designed, developed, and maintained enterprise-grade applications using Java/J2EE, Spring Boot, and microservices architecture, delivering highly scalable, secure, and transaction-heavy solutions across multiple domains, including banking, telecom, and healthcare.
• Designed and delivered high-performance, memory- and CPU-optimized Java 21 applications using Spring Boot, Spring Integration, Spring Web-Client, and Spring Cache, implementing defensive coding practices and application design patterns to ensure fault-tolerant, multi-region deployments on AWS. Leveraged HTTP/TCP protocols, REST APIs, JSON, and XML for integration across enterprise platforms.
• Implemented full-stack features by integrating React.js frontends with Node.js and Java-based REST APIs, ensuring seamless communication and real-time synchronization of data using Kafka streams and WebSockets. This approach improved application responsiveness and user experience, particularly in investment and customer-facing platforms.
• Upgraded legacy Angular 8/10 applications to Angular 15, introducing standalone components, RxJS reactive patterns, and NgRx state management to simplify code maintenance and improve scalability. These upgrades reduced technical debt and enhanced the overall development velocity for new features.
• Applied Core Java concepts (collections, multithreading, serialization, exception handling, synchronization, and Java 11–21 features like records and text blocks) to engineer high-performance applications. By leveraging these techniques, I optimized backend processing and improved throughput for large-scale transaction handling.
• Designed, deployed, and managed cloud-native applications on AWS, leveraging Amazon EKS for container orchestration, Aurora PostgreSQL and DynamoDB for relational and NoSQL persistence, S3 for scalable object storage, IAM for fine-grained access control, Route 53 for global DNS routing, Elastic Load Balancer (ELB) for traffic distribution, SNS and SQS for high-throughput asynchronous messaging, Managed Streaming for Apache Kafka (MSK) for real-time event processing, and CloudWatch for centralized monitoring, logging, and alerting, ensuring highly available, secure, and scalable enterprise applications.
• Developed server-side APIs and middleware using Node.js and Express, integrating with React.js front-end components and Java/Spring Boot microservices to enable seamless data exchange and faster page rendering.
• Designed and developed high-throughput microservices in Scala using Akka HTTP and Play Framework, integrating with Kafka and REST APIs to handle millions of daily transactions for a large financial platform. Applied functional programming principles (immutability, higher-order functions, monads) to produce concise, maintainable, and testable code, which reduced production defects by 25 %.
• Designed and implemented geospatial data services integrating Java 11, Spring Boot, and Angular 12, utilizing REST APIs, PostGIS, and API Gateway to deliver interactive mapping features, spatial analytics, and location-based insights for payment and card-processing applications. Built scalable microservices to process high-volume geospatial datasets, improving transaction risk assessment and fraud detection by enabling location-aware services.
• Designed and implemented an AJAX-based recording and data-capture solution that eliminated the need for a client-side JRE, enabling seamless real-time recording and playback entirely within Google Chrome and other modern browsers. Leveraged Express.js as the lightweight server framework and optimized asynchronous requests to ensure low-latency communication and smooth user interactions.
• Developed and exposed RESTful and SOAP services using Spring Boot, Apache CXF, and JAX-RS, creating secure and interoperable service layers for seamless integration between legacy platforms and modern cloud-native applications.
• Developed and maintained high-performance Java applications for equities trading at Northern Trust, contributing to mission-critical trading platforms and ensuring seamless trade execution. Leveraged advanced messaging and integration techniques to handle real-time market data, implemented risk checks, and ensured compliance with trading regulations, optimizing transaction throughput and system reliability across Nuvoprime API and SwapOne platforms.
• Architected and implemented secure authentication and authorization flows using Spring Security, OAuth 2.0, and JWT-based token validation, which protected sensitive client and financial data. Integrated these mechanisms with identity providers to ensure compliance with PCI DSS, SOX, and HIPAA standards.

Apply here : https://c2cjobs.talenthubsolutions.com/