Open to opportunities

Jonathan Fillipe Lemes

@jonathanfillipelemes

Message

Frontend Engineer building scalable React web and mobile products with strong performance and integrations.

Brazil

Message

What I'm looking for

I’m looking for a remote-friendly team where I can own frontend architecture for React/TypeScript products, collaborate with product/design/backend, and deliver high-performance features—from real-time workflows to payments and operational dashboards.

I’m a Frontend Engineer with experience building production web and mobile applications. I specialize in React, React Native, Next.js, Angular, and TypeScript, with a focus on scalable product development, performance, and reliable integrations. I’ve led cross-functional delivery in remote teams and supported multiple client projects.

At StaffZone, I built the web application used by internal staff to manage daily operations—worker check-ins, route creation, vehicle allocation, and drag-and-drop assignments. I implemented dispatch management, end-of-day payroll processing, tax calculations per state, sick leave handling, and equipment loan tracking.

Most recently at Racino.io (BairesDev), I’ve been Frontend Engineer and Team Leader, delivering real-time messaging, onboarding, scheduling/dispatching, operational dashboards, and USD/crypto payment flows. Earlier roles included Medpass App (React Native/Expo and Twilio chat/video) and ResumeZest (React/Redux-Saga for onboarding, payments, and real-time admin-user communication).

Experience

Work history, roles, and key accomplishments

Current

Frontend Engineer and Team Leader

Current

BairesDev

Jan 2023 - Present (3 years 7 months)

Led and built frontend features for a gaming platform with Unity integration, including avatar creation, team management, onboarding flows, real-time messaging, and operational dashboards. Coordinated as a team leader and integrated USD/crypto payment flows using third-party services, along with web3 authentication and real-time communication.

Expo React Native Next.js Datadog Crossmint AWS Ready Player Me Tanstack Query GraphQL Chakra UI TypeScript Unity Drag And Drop

Frontend Engineer

Uniamérica

Jan 2023 - Jan 2026 (3 years)

Developed a web application for workforce operations, including worker check-ins, route creation, vehicle allocation, and drag-and-drop assignment of workers to construction sites. Implemented dispatch management workflows, payroll processing, tax calculations, sick leave handling, and equipment loan tracking.

Next.js React TypeScript Material UI DnD Kit React Hook Form Axios Jest Cypress

Medpass App Frontend Engineer

DigitalSys

Jan 2021 - Jan 2023 (2 years)

Built mobile and web interfaces for a digital health platform supporting healthcare attendance in B2B and B2C contexts. Implemented real-time communication features (chat and video attendance) and improved reliability and user experience using monitoring and reusable frontend components.

React Native Expo styled components Sentry Axios TypeScript

ResumeZest Full Stack Engineer

Find My Profession

Jan 2019 - Jan 2022 (3 years)

Developed responsive frontend and integrated features for a resume writing platform, including customer registration, order management, payments, and user/admin account flows. Implemented real-time chat, built authentication and REST API integrations, and supported maintainability and scalability through technical planning and review.

Redux Saga Ant Design Axios AWS JWT Authentication REST APIs Nginx Chat

Black Bee Drones Software Developer

Advantech (Brazil)

Jan 2018 - Jan 2019 (1 year)

Worked on computer vision and image processing experiments for drone-related systems and built prototypes using AI libraries for object detection. Implemented monitoring and data visualization interfaces for energy management and industrial automation workflows in an agile/Scrum environment.

Python OpenCV TensorFlow Computer Vision Image Processing Object Detection Energy Management Data Visualization Scrum Agile

Education

Degrees, certifications, and relevant coursework

Computer Engineering program (Foz do Iguaçu, PR)

Computer Engineering, Computer Engineering

Studied Computer Engineering in Foz do Iguaçu, PR, Brazil. Implemented dispatch management, payroll processing, tax calculations, sick leave handling, and equipment loan tracking workflows.