Experience

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  Aldea systems

  Jan 2005 - Nov 2006

  Technical support administrator
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  Winet

  Aug 2007 - Sept 2010

  Server administrator

  Software Development and Infrastructure SetupI collaborated on the design, analysis, and development of several enterprise systems, including: • Warehouse Management and Inventory Control Enterprise System • wiNET Accounting System • Human Resources Enterprise SystemFor these projects, we implemented: • Web Tier: MVC pattern using Struts. • Business Tier: POJOs with O/RM using Hibernate.Additionally, I contributed to the DIETA project, a client/server application for INCAP (Instituto de Nutrición de Centro América y Panamá).Production EnvironmentI installed and configured the production environment on DELL PowerEdge servers running Red Hat Enterprise Linux. Key setups included: • Application Server: Configured Glassfish 2.1. • Database Server: Installed and set up MySQL 5. • LDAP Server: Deployed and configured OpenLDAP. • Firewall: Set up security with iptables on Red Hat Enterprise Linux 4.Development EnvironmentFor the development environment, I set up a centralized version control system with Subversion integrated with Apache2 and LDAP authentication. This setup was deployed on CentOS 5 using an HP ProLiant ML110 G4 server. Show less

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  Universidad del valle de guatemala

  Oct 2010 - Feb 2013

  Senior java developer

  JEE Architecture Design and ImplementationI designed and implemented a robust 4-tier JEE architecture, consisting of Web, Business, Integration, and Resource tiers.Details of the Architecture: 1. Web Tier: • Implemented using the MVC pattern with Struts2, providing a clean separation of concerns. 2. Business Tier: • Designed with core design patterns, including Business Delegate, Service Locator, and Session Facade for modularity and scalability. • Used Session Beans with Remote Interfaces to implement the Session Facade. • Integrated SIB (Stateless Interface Beans) as Web Service endpoints to enable seamless service interaction. 3. Integration Tier: • Applied DAO and O/RM patterns to ensure efficient data access and mapping between objects and relational models. 4. Resource Tier: • Leveraged MS-SQL Server 2008 as the database, ensuring data integrity and reliability.Application Layer: • Deployed the application on JBoss AS 7, providing a scalable, reliable, and high-performance environment for enterprise applications. Show less

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  Seguros g&t

  Feb 2013 - Jan 2021

  Scrum master

  Scrum MasterAs a Scrum Master, I coached high-performing teams, fostering collaboration and guiding them toward achieving their goals. With an Advanced Certified Scrum Master Certification, I mentored teams as a coach, facilitator, and trusted advisor. Creating a safe and supportive environment enabled teams to innovate and continuously improve.Key Contributions: • Trained teams in Agile methodologies, enhancing delivery consistency and collaboration. • Fostered trust and accountability, leading to improved team performance and problem-solving.Software Architect CoordinatorI drove innovation by designing and implementing scalable architectural solutions for cloud and on-premises environments.Key Achievements: • Cloud Migration:Migrated non-productive environments to AWS, leveraging services like RDS, ECS, ECR, ELB, and Route53, boosting efficiency and scalability. • Production Innovation:Designed a hybrid solution to address legal restrictions on cloud migration: • Implemented Docker Swarm and Docker Data Center for orchestration with four manager and worker nodes. • Built a high-availability MariaDB cluster using Galera with a 4-node architecture for optimized read/write operations.Impact: Enhanced reliability, scalability, and performance while meeting legal requirements.Software ArchitectAs a Software Architect, I collaborated with teams to develop and implement tools that enhanced productivity and business performance.Key Projects: 1. Customer Relationship Management (CRM): • Designed and developed an in-house CRM solution, supporting critical business processes that are still in operation. 2. SALI Project: • Led the development of a platform for insurance intermediaries to: • Sell, issue, and activate policies. • Process payments and manage their businesses. • Delivered a user-friendly solution that optimized workflows and improved reseller satisfaction. Show less