Marcos Nunes

As a Fullstack Developer, I collaborate with the tech team to evolve Hobbi's digital platforms, working from PHP backend architecture to modern frontends with Tailwind CSS. I focus on delivering scalable code and high-quality interfaces that align technical excellence with business goals.

I manage the deployment and maintenance of services, ensuring a stable, high-performance production environme

I worked as a full-cycle developer, managing everything from UX/UI design (Figma, Design Systems) to high-performance backend systems. I have extensive experience building scalable server-side applications using Node.js and NestJS, implementing Clean Architecture and SOLID principles to ensure maintainable code.

I developed robust RESTful APIs and Microsserviços using TypeScript, handling complex

I worked on the maintenance and development of Cencosud's White Label app, used by chains such as Mercantil, GBarbosa, and Bretas, ensuring customization and scale across over 100 stores.

I focused on optimizing the financial module, improving usability for cards and payments, resulting in a 35% reduction in errors and a 35% increase in usage. I also implemented automated testing with Jest, integ

Maintain and develop Cencosud’s White Label app across multiple retail stores, focusing on scaling and customizing the product experience. Optimized the financial module and testing/performance (Jest, REST API integration, load-time improvements) and supported legacy migration with modular components plus CI/CD and crash monitoring.

Develop and maintain React Native applications across banking, IoT, and education, including secure payment/authentication and regulatory-compliant financial flows. Implement real-time IoT monitoring integrations and improve usability for education platforms, working with Redux/Context, Styled-components, Jest, WebSockets, and CI/CD with GitLab.

Developed and maintained applications across banking, IoT, and education, impacting 500K+ users through projects for Banco Luso Brasileiro, Banco Random, Digigua (water network management), and an E-learning platform.

Delivered secure payment and authentication systems, ensured regulatory compliance in financial apps, built real-time monitoring modules integrated with IoT sensors for Digigua, and

Worked on multiple projects modernizing systems and mobile apps, with a focus on Unimed Litoral do Paraná, where I led the update of a legacy app, improving compatibility by 40% and enhancing performance on modern devices.

Developed new features and refactored legacy code in healthcare and hospitality applications, including apps for a rhinoplasty clinic and the Hotel Ibiti Comuna, enabling patie

Work on modernization of systems and mobile apps with a focus on Unimed Litoral, including updating a legacy app to improve compatibility and performance on modern devices. Develop and refactor features for healthcare and hospitality apps using Clean Code practices with Jest testing, REST API integrations, and Styled-components.

Lead React frontend development and integrate it with PHP backend ecosystems across multiple Ultratel Telecom projects. Build responsive, high-performance interfaces and support backend API development with secure, stable deployments using Redux/Context, Jest testing, and CI/CD.

Contributed to the development and maintenance of three major projects at Ultratel Telecom, leading the React frontend and integrating it with PHP backend ecosystems. Responsible for designing high-performance, responsive interfaces that reduced load times by 20% and optimized UX, resulting in a 25% increase in user adoption.

Implemented critical communication and process management features usin

Worked on the development and maintenance of Dynamics 365 CRM solutions, creating corporate portals that improved productivity by 15% and automating processes, reducing manual tasks by 40%.

Implemented dynamic forms with JavaScript ES6, developed ASP.NET pages, and integrated with SQL and NoSQL databases, ensuring scalability and reliability for large data volumes.

Enhanced legacy systems throug

> Website optimization, increasing organic traffic by 20%.
> Process automation, reducing operational costs by 30%.

> Enhanced websites, increasing traffic by 20%.
> Maintained and managed pages using WordPress.
> Developed systems using ASP.NET.
> Created dynamic forms with JavaScript ES6.
> Optimized SEO for various clients.
> Integrated REST APIs to automate processes.
> Reduced operational co

Provide freelance full-stack development including website optimization and process automation, with improvements in organic traffic and reductions in operational costs. Build and maintain WordPress sites and ASP.NET systems, create dynamic forms and responsive layouts, integrate REST APIs and Firebase authentication, automate tasks with Node.js, and deliver dashboards and documented project outpu

Earned a Bachelor's Degree in Engineering in Computer Engineering from Universidade Santa Cecília from 2012 to 2016.