Sergio Pereira Villarroel Email & Phone Number

Chile

As the Product Owner for the team responsible for Walmart Chile's Product Catalog, I led efforts to obtain, centralize, and ensure the accuracy of e-commerce product information. I performed Story mapping, roadmapping, and product release planning in an Agile environment.I participated in projects exploring and connecting business needs with Walmart's global network and local market, and actively contributed to defining and driving digital transformation in Chile's e-commerce.I closely monitored and managed the most relevant product KPIs and metrics, providing visibility into results and improvements. Additionally, I defined and safeguarded the product's strategic vision, ensuring alignment with the company's strategic objectives, and translated strategy, customer needs, and business requirements for the digital product's evolution

As the leader of 4 teams within the Latam Digital purchasing process, I was responsible for facilitating meetings, resolving obstacles, and guiding teams to carry out prioritized tasks that maximized cost/benefit through visualization of results, building and monitoring objective metrics and KPIs that had impact and meaning for the company's situation.I prioritized and negotiated requests from stakeholders that supported or benefited the company through the Digital area, making data-based decisions on what was possible to achieve in the short and medium term.I reported to upper management on the work performed and decisions made, having a global vision of products, following the company's guidelines and supporting digital transformation.

As the responsible for maximizing the value of the product and the Development Team's work, I used my business knowledge to detail requirements, make decisions about them and ensure that they were captured in the built system.I managed the Product Backlog, ensuring that value delivery was maximized and that the Product backlog was visible, transparent and clear to everyone.I participated and negotiated in decision-making with internal and external stakeholders.

Las Condes, Región Metropolitana De Santiago, Chile

As a developer of Microservices using the Spring Boot framework, I participated in architectural decisions to ensure the proper functioning and scalability of the system.I designed and developed an event-based development architecture for new products in the Booking area, increasing system efficiency and flexibility.I was responsible for identifying and proposing improvements and solutions related to software quality, software architecture and information security, ensuring the reliability and security of the system.I worked under Kanban and Scrum methodologies to ensure compliance with deadlines and effective team collaboration.

• In charge of the Development area of the Company, which has five teams involved in a variety of projects. Each team is between four and seven people, with 30 people in charge. The teams are Web Design, Project Development, Business Development, Software Architecture and technical support.• Team leader and guide for software development, participating in the stages of analysis, definition and design of the software, as well as in the development of this.• Development under SOA architecture using software languages like Java and Python with a MVC design patter, with Front-End frameworks like AngularJs, Jquery or Codeigniter. Also, with participation in services of queue implementation as well as new features and software improvements. Use of databases relational and non-relational, like Sql Server, Mysql and MongoDb, Solr, Cassandra.• Responsible for controlling and measuring the fulfillment of plans and taking corrective measures in necessary cases, directing and influencing human resources for the adequate execution of objectives in a good work environment.• Responsible for defining improvements and solutions regarding software quality, software architecture and information security.

Chile

• In charge of a development team composed of 10 people which developed Back-End and Front-End applications. Among the tasks, there was the development of intelligent algorithms, and Web and Desktop applications. Languages used were Java, Php, and Python, C #, among others. • Responsible for the development area in projects such as Artificial Intelligence (Data Mining and Evolutionary Algorithms among others)• Resource Optimization through Genetic Algorithms Project Manager• Participation in Data Mining projects, in requirements gathering processes, and in the modelling and development of tools for different institutions.• Development Projects Planning. Implementation of agile methodologies for software development. • Implementation of improvements in procedures aiming at a better software quality and shorter development times.

Chile

• Design and Development of Web Applications based onFramework CakePhp. I am able to administer y manage the company core including meta-data base in order to provide different abstraction levels according to client’s needs• Development and Maintenance of Socket and Proxy. I am able to correlate technologic telecommunications equipment with Database. I also develop under J2EE.• Company internal management improvement through automation process.• Server Maintenance and Set up• Use of tools related to Extreme Programming (XP), such as LinkitKanban and Wiki.

Chile

• Design and Development of Web Software for Traceability with six other people. Using agile metholody (Extreme Programming). Computer Language: Perl, JavaScript, Html.

Chile

• Project Manager for Query System leading a team of six people. It consists of a web application through which students are able to ask for scores obtained after Mathematics Engineering Department of University of Chile tests. The system complied with deadlines and protocols established by the academic unit.• Participated in query registration, time frame estimations and project outreach processes • Participated in Project development using Framework CakePhp

Chile

• Development of computer graphics software programmed under C# and VBasic for management of electronic devices such as temperature monitors and relay cards.• Maintenance and Extension of new modules for web application based on OSCommerce and developed with Php.• Development of the web module for Electronic Invoice printing.• Development of Desktop Software for Electronic Cheque printing under C# language.

• Migration of Software from Linux to Windows, under tool GPL Cygwin.• Software testing for Interactive Voice Response (IVR) System.

Post Grade In It Management, Information Technology

Post Graduate Diploma in Information Management at Universidad de Chile.

General English Course

Intensive General English Course at Shafston International College, Brisbane, Australia. Advanced level of English.

Computer Engineering

Graduated with summa cum laude from Universidad de Chile. Outstanding student award, Department of Computing Science, 2009.

Education record

Graduated within the top 10% of the promotion