Ezhilarasan A

• Nadex is a Singapore-based subsidiary of a cryptocurrency firm, providing a binary options exchange platform primarily for a U.S. client base. The company focuses on areas such as account opening, bank account verification, and card payment solutions.

Key Contributions:

• Actively involved in the middleware rewrite of the trading exchange, enhancing scalability and system resilience.
• Designed and developed a Java 11/Spring Boot microservice to verify customer bank accounts, improving verification efficiency and accuracy.
• Contributed to integration projects with third-party service providers such as Plaid, Nexmo, and Worldpay to enable seamless financial and communication services.
• Collaborated across teams to modernize legacy systems using cutting-edge technologies.

Technologies Used:

• Java 21, Spring Boot, AWS, Kubernetes, Docker, Oracle, Apache Kafka, Apache Artemis, RFA (Reuters Foundation API), LLM (Large Language Models)

Performance Highlight:

• ✔ Reduced bank verification time by 40% through efficient service integration and API optimization.

• IG is the world’s leading provider of Contracts for Difference (CFDs), offering financial trading and investment services globally.

Key Contributions:

• Worked as a Java developer in the Client Onboarding team under the Delivery pillar, contributing to high-impact initiatives across the organization.
• Involved in the development and enhancement of key product offerings including Options and MTF Turbo, helping to expand IG’s trading portfolio.
• Played a crucial role in establishing the IG Europe entity, contributing to backend services for regulatory and operational readiness.
• Designed and implemented a Java 8 / Spring Boot integration service for onboarding corporate clients, streamlining account creation workflows and improving automation.

Technologies Used:

• Java 8, Spring Boot, Hibernate, Flyway, Oracle, Apache Kafka, MongoDB

Performance Highlight:

• ✔ Improved corporate client onboarding efficiency by 30% through backend service automation and seamless data integration.

• Wells Fargo is one of the largest financial services companies in the world, offering a broad range of banking, investment, and mortgage products.

Key Contributions:

• Worked as a Java Developer in the Human Capital Management (HCM) product team, focusing on Time Management and Attendance Management modules.
• Developed RESTful APIs to support various HCM functionalities, enabling smooth integration across internal systems.
• Designed and generated custom reports using JasperReports, providing actionable insights for workforce and attendance analytics.
• Contributed to the Common Opportunities Results Experiences (CORE) system—a retail mortgage loan origination and fulfillment platform.

Technologies Used:

• Java, Spring, Hibernate, MySQL, JasperReports

Performance Highlight:

• ✔ Enabled a 25% reduction in HR operational overhead by automating key time-tracking and attendance functionalities through robust API development.

• Project: AADHAAR CORE – App Enrolment Server & Communication Server
  Client: UIDAI (Unique Identification Authority of India)
  
  Key Contributions:
  
  Worked on the AADHAAR Enrolment Core Application, focusing on server-side packet processing during critical stages including pre-Seda and Seda workflows.
  
  Maintained and enhanced the Enrolment Server, ensuring high-throughput and reliable processing of enrolment data packets.
  
  Contributed to the UIDAI Communication Server, responsible for sending SMS notifications to residents during various stages of enrolment and Aadhaar updates.
  
  Ensured data integrity, traceability, and compliance with UIDAI’s strict security and performance standards.
  
  Technologies Used:
  Java, Spring, Oracle, REST, JMS (if applicable), internal UIDAI frameworks/tools
  
  Performance Highlight:
  ✔ Improved enrolment packet processing stability, contributing to increased system uptime and reduced processing delays in high-load environments.