TFthales ferreira
@thalesferreira
Full-Stack Engineer with 7+ years of experience in tech.
BrazilWhat I'm looking for
I'm a Full-Stack Engineer with over 7 years of experience, specializing as a Front End Engineer. My passion lies in collaborating closely with product teams to understand user needs and prioritize tasks effectively. I've had the opportunity to work in startups from Seed to Series B, where I've not only contributed to significant projects but also mentored junior developers, fostering a culture of knowledge sharing and growth.
One of my proudest achievements was participating in a project that reached $1 billion in transactions within the ag-tech sector. My technical expertise spans a wide array of technologies, including React, Node.js, and Python, allowing me to develop user-friendly applications that enhance user engagement and accessibility. I am committed to maintaining high code quality and optimizing performance, as evidenced by my work in improving testing coverage and application speed.
Experience
Work history, roles, and key accomplishments
Senior Software Engineer
Finetune Learning
Oct 2021 - Present (3 years 7 months)
Developed user-friendly AI applications such as Finetune Generate and Finetune Catalog, utilizing tools like React, Material UI, Next.js, Webpack, Vite, and TypeScript, while optimizing front-end performance. Utilized Sentry and Grafana for Observability to detect, track, and resolve bugs, and increased accessibility compliance (WCAG 2.1) by running weekly tests. Coded REST APIs in Python/Django a
Senior Front-End Engineer
Gavea Marketplace
Jun 2021 - Oct 2021 (4 months)
Developed a desktop application for commodities trading using React, Electron, Styled Components, CSS3, JavaScript, Next.js, and React-Query. Led and mentored 5 junior developers, improving code quality metrics by 35%. Maintained and refactored state management from Redux Sagas to Context API and React-Query, and created a shared core library used across platforms, reducing duplicated code by 40%.
Mid-Level Front-End Developer
Volanty
Jul 2019 - Jun 2021 (1 year 11 months)
Developed and optimized an e-commerce platform with SSR (Next.js/Nuxt.js), achieving a 40% performance improvement. Integrated Fiberase to save potential leads, increasing conversion by 20%. Built a Backend for Frontend (BFF) with Node.js and GraphQL to optimize data queries and ran A/B tests using Google Analytics and Hotjar to monitor user behavior and improve conversion rates.
Internship
Beijaflore
Oct 2018 - Jul 2019 (9 months)
Developed and implemented new features using Ruby on Rails, HTML, CSS, and jQuery. Maintained an Oracle Database, creating stored procedures and triggers. Contributed to securing a new contract with Telecom Mobile Italy (TIM), expanding the client base with two new telecom companies.
Education
Degrees, certifications, and relevant coursework
University in Brazil
Bachelor's degree, Computer Science
2015 - 2019
Completed a Bachelor's degree in Computer Science. Studied the fundamentals of the field, including core concepts and principles.
Availability
Location
BrazilAuthorized to work in
Skills
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