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Enhancement and maintenance of enterprise-grade APIs within AT&T's Customer Service Interface (CSI) layer, supporting core telecom business workflows with a focus on reliability, security, and faster release cycles.

• ▹Analyzed business requirements and translated them into scalable API enhancements within the CSI layer
• ▹Designed, developed, and unit-tested RESTful APIs and microservices using Java and Spring Boot
• ▹Built and deployed release versions using CI/CD pipelines integrated with Jenkins
• ▹Implemented RESTful APIs and integrated third-party services to extend platform functionality
• ▹Used Splunk for application log monitoring and troubleshooting of production issues
• ▹Conducted vulnerability scanning (SCA, SAST, DAST) as part of the secure development lifecycle
• ▹Performed code reviews and collaborated with QA teams to ensure defect-free releases
• ▹Managed source code versioning and branching strategies using Git across feature teams

Design and implementation of integration workflows connecting multiple internal systems within AT&T's MVNO ecosystem, enabling seamless data exchange between partner platforms and core telecom systems.

• ▹Designed and implemented integration solutions using MuleSoft Anypoint Studio
• ▹Developed API specifications using RAML for contract-first API design across integration flows
• ▹Built and configured Mule flows to orchestrate data exchange between upstream and downstream systems
• ▹Utilized Azure DevOps to build, deploy, and manage APIs across dev, QA, and production
• ▹Used MuleSoft's DataWeave for complex data transformations between JSON and XML formats
• ▹Performed API testing and validation using Postman for functional and performance requirements
• ▹Collaborated with business analysts, QA, and infrastructure teams to troubleshoot integration issues