Antonia is available for hire
Hire AntoniaAntonia Tajes Farenzena
Verified Expert in Engineering
OutSystems Developer
Porto Alegre - State of Rio Grande do Sul, Brazil
Toptal member since August 18, 2025
Bio
Antonia is a software developer passionate about solving complex problems and driving innovation. With expertise in OutSystems, full-stack development, and system integrations, she delivers robust, efficient solutions for high-impact projects. Embracing challenges as opportunities to grow, Antonia contributes to teams that build meaningful, scalable technology.
Portfolio
Western Union
OutSystems, CSS, JavaScript, Java, Spring Boot, MuleSoft, Mambu, Agile, Scrum...
Adresles
OutSystems, CSS, JavaScript, Python, Agile DevOps, Release Management, Scrum...
Noesis
OutSystems, CSS, JavaScript, Complex Problem Solving, Design Thinking, HTML...
Experience
- Full-stack - 4 years
- OutSystems - 4 years
- CSS - 4 years
- Complex Problem Solving - 4 years
- System Integration - 4 years
- Architecture - 4 years
- API Integration - 4 years
- Release Management - 3 years
Preferred Environment
OutSystems
The most amazing...
...solution I've built was part of a high-stakes European banking migration, where I crafted full-stack features and integrations for a seamless user experience.
Work Experience
Senior Solution Engineer
2024 - PRESENT
Western Union
- Contributed to the development of a digital bank's customer-facing product by delivering full-stack solutions with OutSystems.
- Played a key role in the successful migration of the digital banking system from an international hub to local branches, the product's flagship project of 2024.
- Spearheaded the OutSystems team within the daily banking vertical, overseeing the cards and accounts sections and integrating them with core systems such as Mambu and Marqeta.
- Implemented a new onboarding flow for a European branch, introducing a redesigned user experience and multiple identity-verification methods.
- Served as release manager, overseeing end-to-end software release processes, managing change control, and ensuring smooth, compliant production deployments that reduced errors and accelerated delivery timelines.
- Acted as liaison among technical teams, vendors, and business stakeholders to align release plans with strategic goals, resolve issues, and maintain transparent communication.
- Migrated integration workflows from MuleSoft to Spring Boot, redesigning and refactoring processes to improve performance and enable seamless deployments.
Technologies: OutSystems, CSS, JavaScript, Java, Spring Boot, MuleSoft, Mambu, Agile, Scrum, Release Management, APIs, System Integration, QA Testing, Complex Problem Solving, Design Thinking, HTML, Agile DevOps, Project Delivery, React, Stakeholder Management, DevOps, Architecture, Mobile App Development, Computer Science, Full-stack, API Integration, Payment Gateways, eCommerce Platforms, Leadership, Plugins, SQL
Lead OutSystems Developer
2023 - 2024
Adresles
- Drove the development of a customer-facing logistics platform, streamlining online checkout through phone number verification.
- Managed a small development team and worked closely with stakeholders to define and deliver core features.
- Integrated major logistics providers and payment gateways through custom APIs, ensuring seamless operations.
- Built messaging app integrations to enhance delivery management and customer communication.
- Developed eCommerce plugins for multiple platforms, enabling seamless logistics integration at checkout.
Technologies: OutSystems, CSS, JavaScript, Python, Agile DevOps, Release Management, Scrum, APIs, eCommerce, Chatbots, Complex Problem Solving, Prototyping, Design Thinking, HTML, Project Delivery, Stakeholder Management, Agile, Change Management, DevOps, System Integration, QA Testing, Architecture, Mobile App Development, Computer Science, Web Development, Full-stack, API Integration, Payment Gateways, eCommerce Platforms, Leadership, Team Management, Plugins, SQL
OutSystems Consultant
2023 - 2024
Noesis
- Contributed to a major public-sector system migration, ensuring a seamless transition with minimal operational impact.
- Enhanced data integrity and system performance through hands-on database management and synchronization.
- Developed and optimized solutions on the OutSystems platform, enhancing system reliability and supporting a successful migration.
- Collaborated with a university to develop an integrated coding tool for students, allowing them to write and test code directly within an e-learning platform.
- Troubleshot complex technical issues, providing timely and effective resolutions under tight deadlines.
Technologies: OutSystems, CSS, JavaScript, Complex Problem Solving, Design Thinking, HTML, Scrum, APIs, Project Delivery, Stakeholder Management, Agile, DevOps, System Integration, QA Testing, Architecture, Computer Science, Web Development, Full-stack, API Integration, SQL
Junior OutSystems Developer
2022 - 2023
Orbcom
- Engineered a hybrid HR and social engagement platform for a public-sector organization, enhancing internal communication and employee interaction.
- Built an interactive news module with likes and comments, fostering a more connected and dynamic workplace community.
- Integrated essential tools to streamline workflows, significantly improving operational efficiency and user experience.
Technologies: OutSystems, CSS, HTML, Complex Problem Solving, Prototyping, Design Thinking, JavaScript, Agile DevOps, Scrum, APIs, Project Delivery, Agile, System Integration, QA Testing, Architecture, Computer Science, Web Development, Full-stack, API Integration, SQL
OutSystems Developer Trainee
2022 - 2022
Experis
- Completed an intensive nine-week full-time training program, mastering core OutSystems platform functionalities and best practices.
- Selected as a speaker at an OutSystems User Group event, sharing insights and training experiences with the developer community.
- Transitioned directly into a client-facing role at a partner firm after training, applying OutSystems expertise to real-world projects from day one.
Technologies: OutSystems, CSS, HTML, JavaScript, Complex Problem Solving, Prototyping, Design Thinking, Scrum, APIs, Project Delivery, Agile, System Integration, QA Testing, Architecture, Computer Science, Web Development, Full-stack, API Integration, SQL
Experience
Customer-facing Logistics & eCommerce Platform
I developed a customer-facing logistics platform that simplified online checkout and integrated major logistics providers and payment gateways. I also built messaging app workflows and created plugins for Shopify, Wix, PrestaShop, and WooCommerce to enable seamless delivery management.
Education
2012 - 2015
Bachelor's Degree in Design
Ritter dos Reis University Center (UniRitter) - Porto Alegre, Brazil
Certifications
JUNE 2025 - PRESENT
Architecture Specialist (O11)
OutSystems
APRIL 2025 - PRESENT
Mobile Developers Specialist (O11 and ODC)
OutSystems
FEBRUARY 2023 - PRESENT
Associate Developer (ODC)
OutSystems
DECEMBER 2022 - PRESENT
CS50x Computer Science
HarvardX
OCTOBER 2022 - PRESENT
ReactJS
As Raparigas do Código
JUNE 2022 - PRESENT
Associate Reactive Developer (O11)
OutSystems
Skills
Libraries/APIs
React
Languages
CSS, HTML, JavaScript, SQL, Python, Java
Paradigms
Design Thinking, Agile, Change Management, Scrum, DevOps
Frameworks
Spring Boot
Platforms
MuleSoft, Mambu
Other
OutSystems, Complex Problem Solving, APIs, Project Delivery, Stakeholder Management, System Integration, QA Testing, Architecture, Mobile App Development, Computer Science, Web Development, Full-stack, API Integration, Prototyping, User-centered Design (UCD), Agile DevOps, Release Management, Payment Gateways, eCommerce Platforms, Leadership, Team Management, Plugins, Information Architecture (IA), eCommerce, Chatbots, ODC Architecture, ODC Development
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