Euclides Rosário

Engineered scalable, high-performance applications using TypeScript, Node.js, and React, ensuring clean architecture and maintainable codebase.

Designed and implemented robust RESTful APIs and microservices, facilitating seamless integration with front-end interfaces.

Built responsive, user-friendly interfaces with React, leveraging hooks, context, and custom components to significantly enhance user experience and accessibility.

Collaborated cross-functionally with product managers, designers, and QA teams in an agile environment, driving project milestones and improving time-to-market.

Championed the adoption of modern testing and UI consistency tools (Storybook, Jest, Cypress), improving frontend reliability and reducing production bugs.

Deployed applications in Azure, optimizing CI/CD workflows and leveraging Azure services for efficient, reliable releases and resource management.

Collected, cleaned, and prepared large datasets required for training or fine-tuning language models, ensuring high quality and representativeness for optimal model performance.

Collaborated effectively with data scientists, software engineers, and product managers to successfully integrate AI models into products and services.

Provided technical support and expertise on the capabilities and limitations of large language models, guiding stakeholders in strategic decision-making.

Developed and implemented comprehensive IT strategies, ensuring alignment with overarching business goals and identifying key opportunities for technological improvement.

Oversaw the design, implementation, and maintenance of critical IT systems and networks, guaranteeing high uptime, reliability, and scalability for all infrastructure.

Managed and mentored a high-performing IT team, fostering professional growth and efficient cross-functional collaboration to meet organizational needs.

Established and enforced robust IT security policies and compliance frameworks, safeguarding company data and systems against threats.

Negotiated vendor contracts and managed the IT budget effectively, optimizing resource allocation and achieving cost-effective solutions for hardware, software, and services.

Spearheaded the refactoring process of the main Chat Platform Application for Lead Generation, serving +2K clients and +200K monthly users, significantly improving performance and scalability.

Motivated the tech team through 5 presentations on IT and software development/maintainability, fostering a culture of continuous improvement and knowledge sharing.

Composed 100% of the new AI Assistant UI in close collaboration with the Design team, enhancing user engagement and interface aesthetics.

Led a team of 5 software engineers (4 Fullstack/Mobile Developers, 1 QA) in developing and delivering robust mobile software solutions.

Established and implemented mobile software infrastructure standards, enhancing best practices and optimizing CI/CD processes.

Participated in planning and implementing new mobile features, resolving bugs, and preventing production errors to improve application stability.

Collaborated with a development team to idealize and construct software, developing and consuming services/APIs for products using JavaScript technologies (ReactJS, React Native, NodeJS/Serverless).

Created integrations with marketing tools such as Facebook, Instagram, Google Ads, and Google Analytics, enhancing data collection and campaign effectiveness.

Launched and grew a consulting firm, delivering strategic IT solutions across digital marketing, software development, project management, and UI/UX design.

Managed end-to-end project lifecycles, from client acquisition and requirements gathering to solution delivery and stakeholder management.

Developed and implemented custom software solutions and digital marketing strategies for clients, driving their business growth and operational efficiency.

Advised clients on product design and UI/UX best practices, enhancing user engagement and market competitiveness.

Consulted on the design and delivery of new software features for a delivery app, integrating payment methods and social network authentication (Facebook, Google).

Resolved existing bugs and optimized app performance, contributing to a smoother user experience and increased reliability.

Integrated third-party APIs (Geo, Maps) to enhance app functionality and user engagement.

Contributed to a platform connecting customers and clients for goods delivery, improving operational efficiency and user satisfaction.

Designed the project architecture and initiated development of a delivery app from scratch, organizing an agile team for successful project execution.

Authored comprehensive technical documentation, ensuring clarity and maintainability for future development and team collaboration.

Implemented critical e-commerce modules, including payment methods and social network authentication (Facebook, Google), enhancing platform functionality.

Organized and managed the development team in an agile environment, optimizing workflow and project delivery timelines.

Gathered and assessed user requirements in collaboration with customers, translating needs into effective design solutions for E-commerce layouts.

Illustrated design ideas using process flows and site maps, creating detailed mockups and UI prototypes that clearly conveyed e-commerce functionality.

Prepared and presented design drafts to internal and external stakeholders, incorporating feedback to refine layouts.

Identified and resolved UX issues, including responsiveness, and made layout adjustments based on customer feedback to enhance user satisfaction.

Ensured adherence to style standards in fonts, colors, and images, maintaining brand consistency and visual appeal.

Facilitated Scrum processes for the development team, improving self-organization and aligning development with project processes.

Removed impediments for the team, ensuring smooth workflow and timely project delivery.

Promoted team self-discipline and adherence to agile principles, enhancing overall team productivity and collaboration.

Responsible for the user experience of web applications within an Agile team, creating UI/UX for multiple web application interfaces.

Developed web application interfaces using ReactJS, NestJS, jQuery, JavaScript, Typescript, Bootstrap, CSS3 & HTML5 technologies.

Contributed to 3 main projects, one of which became the company's main income product, designed from scratch with the dev team.

Developed software for client document validation and authentication, streamlining critical business processes.

Implemented an OCR (Optical Character Recognition) system to digitize documents, improving data management efficiency.

Created 'SigarQ,' a Document Management System with a powerful search engine, managing logistics and document storage for enterprise clients.

Created prototypes and wireframes for web and desktop applications, enhancing visual communication and design clarity.

Designed project presentation layouts and maintained web pages, applying UI/UX principles to improve user engagement.

Developed front-end using JavaScript, jQuery, HTML5, and CSS3, ensuring responsive and visually appealing designs.

Developed and maintained the 'YetuSchool' School Management Software using PHP, MySQL, JavaScript, ReactJS, jQuery, Bootstrap, CSS3, and HTML5.

Managed web application development projects, ensuring timely delivery and adherence to specifications.

Managed the institution's finances and academic sides, serving 5 clients with multiple institutions, improving operational efficiency and data management.