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Breno Pereira

Linkedin | Github | breno.pereira.dev@gmail.com | Joinville, Brazil | +55 47999691-722

EDUCATION

AAS INFORMATION TECHNOLOGY, JANUARY 2020

● Brazil, Federal Institute of Pará

SKILLS

LANGUAGES/TOOLS/FRAMEWORKS/CONCEPTS

● React.js, TypeScript, JavaScript, Node.js, Solidity.js, web3.js, Blockchain

● Express.js, Next.js, Jest, SQL, Docker, styled-components, HTML, CSS

● TDD, BDD, Clean Code, SOLID

● Portuguese (Native), English (B2 Upper Intermediate) and Spanish (C1)

WORK EXPERIENCE

SOFTWARE ENGINEER | VODAFONE, UNITED KINGDOM | MAY 2023 - CURRENT

● Integrating an international team collaborating across the UK, Romania, Hungary, India, and

Brazil, specializing in developing e-commerce solutions for Vodafone.

● Developing UI interfaces and web components using React.js and TypeScript for a marketplace

platform utilized in over 15 countries, serving approx. 20M clients.

● Actively engage in cross-functional meetings with Testing, Product, and Design teams to define

requirements and goals using Agile methodology.

SOFTWARE ENGINEER | WEG, REMOTE | SEPT 2022 - JUNE 2023

● Led a migration of a CRM platform used by customers from 18 countries, from Java JSP to

Next.js, achieving substantial enhancements in application performance, user experience, and

maintainability.

● Implementation of a new login system via OAuth and 2FA strategies via Keycloak provider from

next/auth lib.

● Contributed as a valuable member of the Technical Interview team, conducting assessments for

Frontend and Backend candidates to support the recruitment process for open positions.

SOFTWARE ENGINEER | DISYS, REMOTE | FEB 2022 - SEPT 2022

DISYS is a global staffing, IT consulting, and managed services firm. I worked allocated at Britannia, a

multinational company in the electronics field, where I was responsible for:

● Designed web components and interfaces using React.js and TypeScript for a CRM platform with

tens of thousands of customers.

● Integrated REST and third-party APIs with an emphasis on optimizing performance and ensuring

security using React-Query, React Hooks, and caching strategies.

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● Implemented frontend patterns and industry best practices to achieve mobile-first designs,

cross-browser compatibility, and scalable implementations.

SOFTWARE ENGINEER | TRIZY, REMOTE | AUG 2021 - FEB 2022

Trizy is a Brazilian startup focused on the logistics area with over 120k truckers reaching out and a

volume of 1 billion annual freight.

● Maintenance and development of reliable interfaces and web components using React.js,

styled-components, and TypeScript.

● Implemented unit tests with Jest and React Testing Library for app components and third-party

APIs addressing 98% code coverage.

● Engaged in bug fixes, coding refactoring, and conducted code reviews to ensure code integrity

and performance.

SOFTWARE ENGINEER | PONTALTECH, REMOTE | DEC 2020 - OCT 2021

Pontaltech is a Brazilian startup focused on delivering SMS, e-mail, and voicebot solutions for Brazil's

main credit recovery institutions.

● Developed Node.js-based REST APIs for an AI virtual agent serving millions of users focused on

top-notch performance, security, and scalability.

● Refactoring APIs in Express.js and implementation of Grafana and Kibana metrics that optimized

API requests by 70% and prevented loss in the cloud by 20%.

● Built a service to upload and process high volumes of Excel data using Node.js and AWS S3,

allowing customers to track orders more easily on the platform.

SOFTWARE ENGINEER INTERN | IFPA, ON-SITE | DEC 2017 - SEP 2019

● Worked on developing two significant internal projects: the Amazon Rainforest App (ARA) and

the School Management App (SMA). During my journey as an Intern, I learned a lot about

concepts of architecture, design patterns, OO programming, and improving my skills in Java,

HTML, CSS, Bootstrap, and JavaScript.