AVINASH SINGH

Software Engineer

August 2024 — Present

• Currently working with American Express on Project Nemo since August 2024.
• Developed two APIs: bulkInstitution and bulkProfile using Vert.x, Future, and CompletableFuture for asynchronous and multithreaded processing.
• Delivered end-to-end microservices using Vert.x and Spring Boot, incorporating schema design, validation logic, and exception handling.
• Utilized Couchbase database for data storage and retrieval, optimizing query performance.
• Achieved 90% test coverage using Groovy test cases and ensured compliance with SonarQube standards.
• Monitored Kibana logs for performance analysis and optimization.
• Conducted QA gating calls, ensuring smooth deployment and functionality.
• Written BDD test cases and reports to enhance test automation.
• Worked extensively on auditability and traceability of each request to maintain system integrity.

Software Engineer

October 2023 — July 2024

• Spearheaded the development of microservices-based end-to-end projects using Java 8 and Spring Boot framework for the Walmart payment tracking system.
• Handled concurrent data processing via Kafka consumers and multithreaded processing pipelines.
• Designed and executed functionalities to seamlessly receive invoices, claims, and financial transactions from Kafka consumers.
• Ensured data integrity and accuracy by expertly extracting, processing, and deserializing records from Kafka messages.
• Implemented robust exception handling mechanisms, thereby guaranteeing system stability and reliability.
• Authored comprehensive JUnit test cases, ensuring high test coverage and validation of code functionality.
• Conducted thorough integration testing to verify seamless interaction among different system components.
• Managed the entire development lifecycle from design to testing and deployment.
• Efficiently stored processed records in the database, optimizing data storage and retrieval.
• Developed and implemented business logic to process records in accordance with defined requirements and specifications.
• Upheld coding standards, best practices, and project deadlines throughout the development process.
• Managed the complete SDLC, adhering to best practices in J2EE and Spring frameworks.

Software Developer

September 2019 — May 2023

• Worked with Maersk Global in shipping and logistics applications.
• Designed and developed base modules using Java 8 & 6 and Spring Boot, incorporating both reactive and non-reactive microservices.
• Applied J2EE principles in the integration of internal and upstream systems
• Used SQL Server and Oracle for storing relational data.
• Performed end-to-end integration of services internally and with upstream systems.
• Designed technical flows for various business requirements.
• Developed standalone services for seamless operations.
• Written optimized queries for sub-document level data retrieval in SQL.
• Gained strong experience in working on Agile-based projects.