Harold Andres Verjan Diaz

• Designed, developed, and implemented software applications for website based on analyzed requirements and understanding of industry technical standards.
• Reviewed code, debugged problems, and corrected issues.
• Tested programs and databases to identify issues and make necessary modifications.
• Reduced manual client data workflows by delivering a React.js app with a Node.js/GraphQL backend that streamlined operations.
• Accelerated feature delivery by building a modular, API-first architecture that improved maintainability and scalability.
• Cut open defects by 40% through disciplined code reviews, debugging, and performance testing cycles.
• Improved release predictability by shipping iterative, on-time releases in close collaboration with design and QA.
• Architected a logistics integration engine that automated multi-client Magaya data synchronization and orchestrated cross-platform workflows across e-commerce and 3PL systems.
• Developed event-triggered workflows to integrate with: Shopify, Magento, CIN7, ChileExpress, Defontana, other third-party logistics platforms.
• Implemented attribute-based triggers to automatically execute business workflows (inventory updates, shipment events, order processing).

• Skills: Azure Functions · AWS Lambda · Python (Programming Language) · Agile Methodologies · Identity & Access Management (IAM) · Node.js · Java · JavaScript · Scrum
• Developed robust, scalable, modular and API-centric infrastructures.
• Informed internal personnel and external stakeholders of project milestones.
• Worked with software development and testing team members to design and develop robust solutions to meet client requirements for functionality, scalability, and performance.

• Collaborated on stages of systems development lifecycle from requirement gathering to production releases.
• Updated old code bases to modern development standards, improving functionality.
• Reviewed code and debugged errors to improve performance.
• Participated in requirements gathering and design development meetings.
• Working Tools: Java, Ping Federate (SAML 2.0), Javascript.
  Quality Center (HP), JIRA, JBehave, FEST, Gemfire, MavenJenkis.

#Azure Functions #AWS Lambda #Agile Methodologies #Java

• Mapfre- Role: Java and Oracle PL
• Mapfre BOSTON (, ) For about one year
• Mapfre (Argentina)
• Mapfre (Spain)
• Working Tools: JAVA, Oracle PL/SQL, Jaspersoft IReports
• Quality Center (HP), JIRA
• Responsibilities: Testing, Support and maintenance to the
• Java Application Client
• (Unitary testing and functional testing, regression testing

• Developed and maintained .NET (C#) REST APIs and web applications supporting regulatory documentation workflows.
  Implemented backend logic and UI features for enterprise web platform.

• Committed to spearheading the development and maintenance of both the backend and front-end applications as the primary developer and team leader
• My role encompasses a range of vital responsibilities, primarily focusing on the support and maintenance of the .NET Application, including REST API and Web Application components
• These tasks are central to ensuring the seamless operation of an existing and mission-critical application
• Working Tools: C# as backend, SQL server DB, Angular Js, and Angular, Html, JavaScript and CSS.
• Developed functional databases, applications and servers to support websites on back-end.
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• PHP backend development using MVC architecture and design patterns
• GPRS device firmware programming for telecommunications systems
• C# backend development for GPRS device communication protocols

• Working Tools: Node Js, IOT Devices
• Worked with software development and testing team members to design and develop robust solutions to meet client requirements for functionality, scalability, and performance.
• Reviewed project specifications and designed technology solutions that met or exceeded performance expectations.
• Coordinated with other engineers to evaluate and improve software and hardware interfaces.
• Delivered unit-tested systems within customer-prescribed timeframes.
• Responsibilities: support and new functionalities related to IOT devices with Node Js.