Roger Zavala
PERSONAL
INFORMATION
SOFTWARE ENGINEER
ADDRESS
Profile
I'm a Venezuelan full-stack software developer with over 24 years of experience building
solutions across a wide range of front-end, back-end, and database technologies. My front-end
expertise spans both web and mobile development, and I can deliver solutions using hybrid or
native technologies, depending on the project requirements.
I'm comfortable managing projects independently and also thrive in collaborative team
environments, including leadership roles. My extensive experience qualifies me to serve as a
software architect. I've been studying and successfully implementing Agile methodologies
(Scrum, XP, Feature-Driven Development, TDD, or Agile RUP) since their inception in the software
development world.
Employment History
Senior Full Stack Web: FARMACIA 24 – Remote (Caracas)
FEBRUARY 2023 – DECEMBER 2024
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Developed a full-stack web application (NestJS, Angular, PostgreSQL) from inception to
production, streamlining the B2B process for Drugstore Customers and the Commercial
Team.
Implemented a CI/CD pipeline, significantly reducing deployment time.
Architected a microservices-based back-end (NestJS) to enhance application scalability and
reliability.
Optimized the legacy PostgreSQL database, achieving a 200% query performance
improvement and boosting user experience.
Implemented automated tests to ensure code quality and minimize production defects.
Senior Full Stack Web: CENCOSUD – Remote (Caracas)
OCTOBER 2021 – FEBRUARY 2023
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Utilized a microservices architecture (NestJS) to separate the application into independent
components, improving scalability and reliability.
Implemented a Continuous Integration/Continuous Deployment (CI/CD) pipeline that
reduced time-to-deployment.
Optimized database (MySQL) performance and reduced query time resulting in improved
user experience.
Integrated third-party services, such as payment gateways, to provide additional
functionality for users.
Developed automated tests to ensure code quality and reduce the number of production
defects.
San Antonio de los Altos,
Distrito Capital, Venezuela.
CONTACT-
SOFT SKILLS
Leadership, organized, high
learning speed, researcher,
good conflict management
and determined.
TECHNICAL SKILLS
★★★★★ Typescript
★★★★★ React
★★★★★ Angular
★★★★★ ReactNative
★★★★☆ IONIC
★★★★★ NestJS
★★★★★ ExpressJS
★★★★★ PHP
★★★★☆ Python
★★★★★ HTML/CSS
★★★★★ SQL
★★★★★ MySQL
FullStack Mobile Leader: CONSOLIDEZ, Remote (Caracas)
★★★★★ MongoDB
FEBRUARY 2020 – OCTOBER 2021
★★★★★ PostgreSQL
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Developed a mobile app (IOS/Android) for a financial operations that allowed for easy
customer accounts, payment handler and payable accounts.
Led a team of designers to create an interactive mobile app that increased user retention.
Added new features to the mobile application, resulting in a increment of user
engagement.
Developed an API that enabled the mobile application to communicate with the backend,
resulting in a 200% reduction in latency.
Innovate with new business technologies such as Geographic Information Systems.
★★★★☆ GIT
★★★★☆ Swift
★★★☆☆ C#
★★★★☆ Docker
★★★★★ UML Diagram
Development Team Leader: KOIOSOFT, (Caracas)
AUGUST 2010 – FEBRUARY 2020
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Established an Agile development methodology that improved team collaboration and
resulted in reduction in development cycles.
Assisted with the training and development of new employees, resulting in improved team
morale and productivity.
Led training and development sessions for junior sales associates, resulting in a 200%
improvement in team performance.
Learned and followed all store policies and procedures, resulting in fewer mistakes and
improved customer service.
Processed transactions accurately and efficiently, ensuring that all transactions were
completed within the established timeframe.
Developed tools and scripts that automated development processes and reduced
development time.
★★★★★ DB Design (ERD)
IDIOMAS
★★★☆☆ English
★★★★★ Spanish
HOBBIES
Judo
Karate
Chess
Employment History -
continuation
.NET Consultant: FYC CONSULTORES (Caracas)
NOVEMBER 2005 – AUGUST 2010
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Developed a custom .NET UI library that increased developer productivity and code reuse
Optimized queries for better performance on SQL Server and ORACLE.
Developed stored procedures, triggers and functions that automated manual processes and
improved performance by 200%.
Maintaining distributed system architecture and to improve system modularity and reduce
dependencies between components.
Built a scalable, highly available system that handled tens of thousands of concurrent users
with minimal downtime.
Refactored legacy code to improve readability and maintainability.
Developed a data migration strategy that successfully migrated data from legacy systems
to the new system.
Research and Development of GIS and Apis technologies, construction of GIS Platforms for
Banking, Government and Mass Consumption Clientss.
I+D Team Leader: SIGIS (Caracas)
JANUARY 2001 – NOVEMBER 2005
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Research and Development of GIS and Apis technologies, construction of GIS Platforms for
Banking, Government and Mass Consumption Clients.
Improved team morale and motivation through positive reinforcement and team building
activities, resulting in improved team performance.
Developed a custom UI library that increased developer productivity and code reuse.
Developed content such as case studies, white papers, and webinars that positioned the
product as the industry leader.
Developed ETL processes to integrate data from multiple sources into a unified data
warehouse.
Developed a complex data warehouse solution that enabled real-time analysis and reporting
of key business metrics.
Collaborated with cross-functional teams to identify and resolve data-related issues.
PERSONAL
INFORMATION
ADDRESS
San Antonio de los Altos,
Distrito Capital, Venezuel
CONTACT-
SOFT SKILLS
Leadership, organized, hi
learning speed, researche
good conflict managemen
and determined.
TECHNICAL SKILLS
★★★★★ Typescript
★★★★★ React
★★★★★ Angular
★★★★★ ReactNative
★★★★☆ IONIC
Education
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Software Engineer - IUTIRLA (1998)
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Mechanical Engineering - Simón Bolívar University (1992)
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ITIL -Software Development
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CMM - Business Implementation
Excellent Customer Service
★★★★★ NestJS
★★★★★ ExpressJS
★★★★★ PHP
★★★★☆ Python
★★★★★ HTML/CSS
★★★★★ SQL
★★★★★ MySQL
★★★★★ MongoDB
★★★★★ PostgreSQL
★★★★☆ GIT
★★★★☆ Swift
★★★☆☆ C#
★★★★☆ Docker
★★★★★ UML Diagram
★★★★★ DB Design (E
IDIOMAS
★★★☆☆ English
★★★★★ Spanish
HOBBIES
Judo
Karate
Chess
