Dener Conceição De Oliveira Email & Phone Number

• Developed apps from scratch, managing the full development lifecycle for both iOS and Android platforms using Flutter as a hybrid solution.• Implemented CI/CD pipelines, reducing deployment times and ensuring fast iteration cycles.• Adopted Agile/Scrum methodologies, improving team productivity and collaboration.• Improved app performance by reducing page load times by up to 80%, enhancing the overall user experience.• Created Unit Tests and Mock data objects using Mockito, achieving 95% code coverage and reducing bug occurrences by 25% during development.• Integrated Firebase Analytics, which resulted in a 40% increase in user engagement by providing deeper insights into user behavior and enabling data-driven decision-making.• Implemented Firebase Crashlytics to proactively monitor and manage app crashes, resulting in a 30% reduction in crash rates and improved app stability.• Developed reusable global components, streamlining the development process and reducing code duplication, leading to a 25% faster delivery of new features.• Designed scalable architectures to support increasing user loads, ensuring high availability and performance.• Integrated complex APIs, enhancing functionality and providing a seamless user experience across the apps.• Optimized memory usage and resource consumption, ensuring smooth and reliable app performance, even under heavy load.• Built multi-language apps, enabling broader accessibility and improving the app's reach to a diverse user base.• Maintained continuous client communication, ensuring that project requirements were met and delivering solutions on time and aligned with business goals.• Led and instructed junior and mid-level developers in Dart programming language, fostering a collaborative learning environment and accelerating onboarding process.• Ensured compliance with Apple App Store and Google Play Store guidelines, enabling rapid approval and deployment to retail channels.

São Paulo, Brazil

• Working on an eCommerce app for both iOS and Android platforms using Flutter as a hybrid solution.• Incorporated Push Notification feature using OneSignal, resulting in a 45% increase in user engagement and retention.• Transformed the codebase into a white-label solution, enabling multiple clients to leverage the same core architecture with minimal customization, leading to a 50% reduction in development time for future projects.• Managed scalable architecture transitions, optimizing resource usage and reducing operational costs.• Implemented a customization system via Firebase Remote Config, allowing clients to autonomously customize their apps in real time, reducing dependency on development teams and enhancing client satisfaction.• Created a Windows version of the app, enabling clients to personalize the app's theme and schedule/send notifications directly to users without needing to access OneSignal, streamlining communication.• Integrated Firebase Analytics, which resulted in a 40% increase in user engagement by providing deeper insights into user behavior and enabling data-driven decision-making.• Developed Firebase functions for automated notifications, such as order updates or abandoned cart reminders, enhancing user engagement and retention.• Implemented Firebase Crashlytics to proactively monitor and manage app crashes, resulting in a 40% reduction in crash rates and improved app stability.• Created Unit Tests and Mock data objects using Mockito, achieving 90% code coverage and reducing bug occurrences by 35% during development.• Optimized memory usage and resource consumption, ensuring smooth and reliable app performance, even under heavy load.• Built multi-language apps, enabling broader accessibility and improving the app's reach to a diverse user base.• Designed user experience frameworks for multiple screen sizes, including iPad and iPhone, resulting in a 30% improvement in user satisfaction.

Espírito Santo, Brasil

Hello, I'm Dener Oliveira, and my mission is to bring impactful digital solutions to life! With experience in software development, I specialize in the Flutter framework (Dart), crafting mobile applications that combine performance and usability.My expertise includes testing and quality assurance, ensuring that every project delivered is reliable and meets the highest industry standards. Additionally, I have extensive experience in API integration, enabling your applications to effectively connect with various services and platforms.💼 Services I Offer:Mobile Development with Flutter: Creating cross-platform mobile applications with intuitive interfaces and high performance.Software Testing and Quality Assurance: Implementing automated and manual tests to guarantee your product's functionality and reliability.API Integration: Connecting applications to external services, enhancing features and improving user experience.Development Consulting: Personalized guidance for projects seeking technological innovation and efficiency.I am committed to delivering excellence and collaborating on the success of the projects I'm involved in.Let's transform your ideas into impactful digital solutions together! 🚀📩 Get in touch to discuss how I can contribute to your next project. It would be a pleasure to be part of your journey toward success!

During this period, I worked as a freelancer and successfully delivered a variety of projects, including:• Created websites using WordPress and integrated e-commerce functionalities with WooCommerce to enhance online sales and user experience.• Implemented Apple Pay integration to streamline the payment process and offer a seamless checkout experience for customers.• Developed new features and resolved bugs in PHP-based systems, improving overall performance and stability.• Designed and built interactive dashboards using Power BI to provide clients with insightful data visualization and reporting capabilities.This experience allowed me to strengthen my skills in web development, e-commerce integration, and data analysis.

• ERP System Implementation: Successfully led end-to-end implementation and deployment of ERP systems, coordinating with stakeholders to ensure seamless integration, high user adoption rates, and alignment with business goals.

• PHP Development: Developed and maintained dynamic web applications using PHP, resulting in optimized performance and improved user satisfaction. Leveraged best practices to ensure clean, maintainable, and scalable code.

Espírito Santo, Brasil

• Windows Server Maintenance: Conducted regular maintenance, updates, and troubleshooting of Windows servers, ensuring optimal performance, security, and minimal downtime.• Linux Server Maintenance: Managed and maintained Linux servers, ensuring system stability, security, and performance through regular updates and proactive monitoring.• MSSQL Database Management: Oversaw the management, maintenance, and optimization of MSSQL databases, ensuring data integrity, availability, and efficient operation.• Computer Maintenance: Performed hardware and software maintenance on computers, ensuring optimal functionality and performance.

Espírito Santo, Brasil