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I'm Jefferson Inacio Ferreira, a Front-end, Back-end, and Mobile Developer with over 10 years of experience. I work across the stack, from designing polished UI with React and Angular to implementing robust APIs and cloud workflows. I enjoy collaborating in SCRUM teams, writing clean code, and delivering features that clients love. I'm comfortable with diverse tech stacks like ReactJS, Angular, Node.js, .NET Core, AWS, Azure, and modern CSS frameworks, and I thrive in fast-paced freelance and agency environments.…I'm Jefferson Inacio Ferreira, a Front-end, Back-end, and Mobile Developer with over 10 years of experience. I work across the stack, from designing polished UI with React and Angular to implementing robust APIs and cloud workflows. I enjoy collaborating in SCRUM teams, writing clean code, and delivering features that clients love. I'm comfortable with diverse tech stacks like ReactJS, Angular, Node.js, .NET Core, AWS, Azure, and modern CSS frameworks, and I thrive in fast-paced freelance and agency environments.

Jefferson Inacio Ferreira

Front-End Developer, Back-End Developer, Full Stack Developer, +3

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I'm Jefferson Inacio Ferreira, a Front-end, Back-end, and Mobile Developer with over 10 years of experience. I work across the stack, from designing polished UI with React and Angular to implementing robust APIs and cloud workflows. I enjoy collaborating in SCRUM teams, writing clean code, and delivering features that clients love. I'm comfortable with diverse tech stacks like ReactJS, Angular, Node.js, .NET Core, AWS, Azure, and modern CSS frameworks, and I thrive in fast-paced freelance and agency environments.…I'm Jefferson Inacio Ferreira, a Front-end, Back-end, and Mobile Developer with over 10 years of experience. I work across the stack, from designing polished UI with React and Angular to implementing robust APIs and cloud workflows. I enjoy collaborating in SCRUM teams, writing clean code, and delivering features that clients love. I'm comfortable with diverse tech stacks like ReactJS, Angular, Node.js, .NET Core, AWS, Azure, and modern CSS frameworks, and I thrive in fast-paced freelance and agency environments.

Available to hire

Sao Paulo, Brazil

I’m Jefferson Inacio Ferreira, a Front-end, Back-end, and Mobile Developer with over 10 years of experience.

I work across the stack, from designing polished UI with React and Angular to implementing robust APIs and cloud workflows. I enjoy collaborating in SCRUM teams, writing clean code, and delivering features that clients love. I’m comfortable with diverse tech stacks like ReactJS, Angular, Node.js, .NET Core, AWS, Azure, and modern CSS frameworks, and I thrive in fast-paced freelance and agency environments.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Portuguese

Fluent

English

Intermediate

Work Experience

Front-end Developer / Tech Lead at 3 CON

September 1, 2024 - May 1, 2025

Worked on three projects. The first two were with Caterpillar client, developing features using Angular v16 and unit tests with Jasmine, within SCRUM-based squads. The final project, '3 Control', was a scaffold management platform where I served as Tech Lead, overseeing delivery, stock control, and project-specific logistics.

Front-end Developer at Miketec

June 1, 2023 - June 1, 2024

Developed the company’s internal back office system that allows clients to view products, sales and statistics (monthly, weekly, and annual). Stack: ReactJS, TailwindCSS, ContextAPI, Hooks, Agile SCRUM, Azure.

Front-end Web / Mobile Developer at Gestão Ecommerce / APEX Bank

June 1, 2022 - June 1, 2023

Developed a financial management platform for marketplace revenue using Angular 16, NX monorepo architecture, TailwindCSS for styling, Styled Components, and a mobile app with React Native using RTK, React Navigation, Async Storage, QR Scanner, and RSA Native for encryption.

Front-end Developer at Positivo Educação

February 1, 2021 - December 1, 2021

Developed a virtual education platform for primary and secondary students using ReactJS, MongoDB, Storybook, Cypress, TypeScript, MUI, JWT, Scrum, Git Flow.

Front-end Developer at Avanade

June 1, 2020 - January 1, 2021

Delivered solutions for clients such as Santander and Banco Safra using Angular (v1.5 to v9), SCRUM, Teams, Git / Git Flow.

Front-end Developer at Cielo

June 1, 2018 - September 1, 2019

Worked on Cielo Promo (Angular 1.5) and the SAC platform (Angular 6). Used REST APIs, SCRUM with squads, daily meetings, planning, code reviews.

Front-end Developer at Casas Bahia (Temporary)

October 1, 2017 - December 1, 2017

Front-end development using Angular 4, ES6 JavaScript, SCRUM, Git / Git Flow, Jira, etc.

Front-end Developer at Marabraz

January 1, 2017 - September 1, 2017

Developed features for a B2B marketplace using JavaScript ES6, Angular, ReactJS, NodeJS, Magento. Agile methodology with SCRUM.

Front-end Developer at Entercom

July 1, 2015 - January 1, 2017

Worked on corporate portals and intranets using SharePoint, JavaScript (ES6), CSS3, SCRUM.

Front-end Developer at Agência Podio

June 1, 2013 - December 1, 2015

Created websites and e-commerce platforms with PHP, SEO, CSS3, JavaScript (ES6), SCRUM.

Full Stack Developer at Mejo Contigo

December 1, 2017 - March 1, 2018

Developed the company's internal back office system that allowed clients to view products, sales and statistics (monthly, weekly, and annual). Stack: ReactJS, TailwindCSS, ContextAPI, Hooks, Agile SCRUM, Azure.

Backend Developer at Gastronomia Dois

December 1, 2025 - Present

Short-term contract Backend Developer delivering APIs and backend services to support a culinary platform.

Front-end Web / Mobile Developer at Gestao Ecommerce / APEX Bank

June 1, 2022 - June 1, 2023

Built a financial management platform for marketplace revenue; tech stack included Angular 16, React, Chakra UI, ContextAPI; mobile app with React Native using RTK; implemented secure authentication and data handling.

Front-end Developer at Carrefour

January 1, 2020 - May 1, 2020

Built e-commerce solutions using VTEX, CSS3, ReactJS, GraphQL; used JIRA, Git Flow; participated in daily standups, planning and code reviews.

Front-end Developer at Use Fashion (Impulso)

October 1, 2019 - December 1, 2019

Delivered features for an online fashion platform using AngularJS (ES6), React (Hooks), GraphQL, TypeScript; integrated mobile app components and SCRUM processes.

Front-end Developer at Mejor Contigo (Freelance)

December 1, 2017 - March 1, 2018

Developed features for an online course platform using AngularJS (ES6/Angular), ReactJS, NodeJS, MongoDB; remote collaboration via Slack and GitLab.

Front-end Developer at CasasBahia (Temporary)

October 1, 2017 - December 1, 2017

Front-end development for e-commerce using Angular 4/6; JIRA, Git Flow; SCRUM; collaborated with design and QA teams.

Front-end Developer at Agência Pódio

June 1, 2013 - December 1, 2015

Created websites and e-commerce platforms using PHP, SEO, CSS3, JavaScript (ES6); SCRUM; client-focused delivery.