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I am a Full Stack Developer with 3+ years of experience building complete web applications from scratch. I’m proficient in React.js, Next.js, TypeScript and Node.js, delivering frontend and backend solutions for event platforms, streaming systems, marketplaces with Mercado Pago checkout, and real-time multiplayer games using WebSockets. Self-taught, proactive and results-oriented, I have led teams of up to eight people and routinely collaborate in remote, hybrid, and on-site environments. I’m driven to learn new technologies, design robust architectures, and ship secure, scalable software.…I am a Full Stack Developer with 3+ years of experience building complete web applications from scratch. I’m proficient in React.js, Next.js, TypeScript and Node.js, delivering frontend and backend solutions for event platforms, streaming systems, marketplaces with Mercado Pago checkout, and real-time multiplayer games using WebSockets. Self-taught, proactive and results-oriented, I have led teams of up to eight people and routinely collaborate in remote, hybrid, and on-site environments. I’m driven to learn new technologies, design robust architectures, and ship secure, scalable software.

JHONATAN VALIENSE

Full Stack Developer, Web Developer, Front-End Developer, +2

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I am a Full Stack Developer with 3+ years of experience building complete web applications from scratch. I’m proficient in React.js, Next.js, TypeScript and Node.js, delivering frontend and backend solutions for event platforms, streaming systems, marketplaces with Mercado Pago checkout, and real-time multiplayer games using WebSockets. Self-taught, proactive and results-oriented, I have led teams of up to eight people and routinely collaborate in remote, hybrid, and on-site environments. I’m driven to learn new technologies, design robust architectures, and ship secure, scalable software.…I am a Full Stack Developer with 3+ years of experience building complete web applications from scratch. I’m proficient in React.js, Next.js, TypeScript and Node.js, delivering frontend and backend solutions for event platforms, streaming systems, marketplaces with Mercado Pago checkout, and real-time multiplayer games using WebSockets. Self-taught, proactive and results-oriented, I have led teams of up to eight people and routinely collaborate in remote, hybrid, and on-site environments. I’m driven to learn new technologies, design robust architectures, and ship secure, scalable software.

Available to hire

I am a Full Stack Developer with 3+ years of experience building complete web applications from scratch. I’m proficient in React.js, Next.js, TypeScript and Node.js, delivering frontend and backend solutions for event platforms, streaming systems, marketplaces with Mercado Pago checkout, and real-time multiplayer games using WebSockets.

Self-taught, proactive and results-oriented, I have led teams of up to eight people and routinely collaborate in remote, hybrid, and on-site environments. I’m driven to learn new technologies, design robust architectures, and ship secure, scalable software.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Portuguese

Fluent

English

Advanced

Spanish; Castilian

Intermediate

Work Experience

Full Stack Developer at Freelance / Self-Employed (Independent Projects)

January 1, 2022 - Present

Led end-to-end development for independent projects: an event platform with registration, admin dashboard, and Mercado Pago checkout; a streaming system with content management and user authentication; a Habbo Hotel-inspired real-time multiplayer game using WebSockets; a marketplace with product catalog, cart, Mercado Pago checkout and seller management; plus responsive mobile apps built with React Native.

SEO Manager / Digital Marketing Specialist at ProCreative

March 1, 2015 - Present

Team leadership and SEO strategy development that increased clients' organic traffic; performed keyword research, on-page optimization, link building, and analytics with Google Analytics; created persuasive copy for websites, social media and email campaigns.

Telecommunications Network Technician at SV Provedor de Internet LTDA

February 1, 2017 - September 1, 2021

Managed a 6-person team: recruitment, training and daily operational leadership; customer service and sales outreach; data management using ISP systems to ensure process efficiency.

Telecommunications Network Technician at Fibranet Brasil

March 1, 2019 - July 1, 2019

Managed an 8-person team, focused on technical problem-solving and meeting project deadlines; development of plans and schedules for network infrastructure projects.

Sports & Leisure Monitor at Eco Parque Arraial D'Ajuda

April 1, 2015 - July 1, 2015

Supervision of sports activities, ensuring safety standards and participant satisfaction.