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Hi there! I’m Guilherme Nunes, a Front-End and Back-End Developer based in Belo Horizonte, Brazil. I bring 3+ years of proven experience building and maintaining responsive and interactive web and mobile interfaces, with hands-on work on production apps using Next.js, React, JavaScript, and TypeScript, including server-side rendering (SSR) and API routes. I enjoy integrating various APIs and backend services, and I’m especially interested in authentication, payment gateways, and AI integration. I’m eager to apply my problem-solving skills to tackle critical authentication and authorization challenges, implement advanced AI functionality (OpenAI Assistant API), and secure payment flows (Stripe, PayPal). I’m committed to delivering production-ready code, thorough testing, clear documentation, and effective communication in a remote, outcomes-driven environment.…Hi there! I’m Guilherme Nunes, a Front-End and Back-End Developer based in Belo Horizonte, Brazil. I bring 3+ years of proven experience building and maintaining responsive and interactive web and mobile interfaces, with hands-on work on production apps using Next.js, React, JavaScript, and TypeScript, including server-side rendering (SSR) and API routes. I enjoy integrating various APIs and backend services, and I’m especially interested in authentication, payment gateways, and AI integration. I’m eager to apply my problem-solving skills to tackle critical authentication and authorization challenges, implement advanced AI functionality (OpenAI Assistant API), and secure payment flows (Stripe, PayPal). I’m committed to delivering production-ready code, thorough testing, clear documentation, and effective communication in a remote, outcomes-driven environment.

Guilherme Nunes

Front-End Developer, Back-End Developer, Web Developer, +4

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Hi there! I’m Guilherme Nunes, a Front-End and Back-End Developer based in Belo Horizonte, Brazil. I bring 3+ years of proven experience building and maintaining responsive and interactive web and mobile interfaces, with hands-on work on production apps using Next.js, React, JavaScript, and TypeScript, including server-side rendering (SSR) and API routes. I enjoy integrating various APIs and backend services, and I’m especially interested in authentication, payment gateways, and AI integration. I’m eager to apply my problem-solving skills to tackle critical authentication and authorization challenges, implement advanced AI functionality (OpenAI Assistant API), and secure payment flows (Stripe, PayPal). I’m committed to delivering production-ready code, thorough testing, clear documentation, and effective communication in a remote, outcomes-driven environment.…Hi there! I’m Guilherme Nunes, a Front-End and Back-End Developer based in Belo Horizonte, Brazil. I bring 3+ years of proven experience building and maintaining responsive and interactive web and mobile interfaces, with hands-on work on production apps using Next.js, React, JavaScript, and TypeScript, including server-side rendering (SSR) and API routes. I enjoy integrating various APIs and backend services, and I’m especially interested in authentication, payment gateways, and AI integration. I’m eager to apply my problem-solving skills to tackle critical authentication and authorization challenges, implement advanced AI functionality (OpenAI Assistant API), and secure payment flows (Stripe, PayPal). I’m committed to delivering production-ready code, thorough testing, clear documentation, and effective communication in a remote, outcomes-driven environment.

Available to hire

Hi there! I’m Guilherme Nunes, a Front-End and Back-End Developer based in Belo Horizonte, Brazil. I bring 3+ years of proven experience building and maintaining responsive and interactive web and mobile interfaces, with hands-on work on production apps using Next.js, React, JavaScript, and TypeScript, including server-side rendering (SSR) and API routes. I enjoy integrating various APIs and backend services, and I’m especially interested in authentication, payment gateways, and AI integration.

I’m eager to apply my problem-solving skills to tackle critical authentication and authorization challenges, implement advanced AI functionality (OpenAI Assistant API), and secure payment flows (Stripe, PayPal). I’m committed to delivering production-ready code, thorough testing, clear documentation, and effective communication in a remote, outcomes-driven environment.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Portuguese

Fluent

English

Advanced

Work Experience

Front End Engineer at CAPYS IT SOLUTIONS

April 1, 2023 - Present

Developed and maintained high-quality, responsive web and mobile applications using React, React Native, JavaScript, and TypeScript, including production apps with Next.js and React, leveraging server-side rendering (SSR) and API routes. Collaborated closely with designers and back-end developers to create seamless and efficient web applications, integrating RESTful APIs effectively and gaining experience with various back-end services. Optimized applications for speed, scalability, and user experience, demonstrating a strong understanding of front-end build tools and performance best practices. Actively participated in code reviews, contributing to the continuous improvement of the codebase and ensuring adherence to best practices. Contributed to technical documentation and guidelines for internal use, fostering knowledge sharing within the team.

Front-End Engineer at CAPYS IT SOLUTIONS

April 1, 2023 - Present

Developed and maintained high-quality, responsive web and mobile applications using React, React Native, JavaScript, and TypeScript, including production apps with Next.js and SSR; collaborated with designers and backend developers to create seamless and efficient web applications; optimized performance and user experience; actively participated in code reviews; contributed to technical documentation and internal guidelines.

Front-End Engineer at CAPYS IT SOLUTIONS

April 1, 2023 - Present

Developed and maintained high-quality, responsive web and mobile applications using React, React Native, JavaScript, and TypeScript, including production apps with Next.js and React, leveraging server-side rendering (SSR) and API routes. Collaborated closely with designers and backend developers to create seamless, efficient web applications, integrating RESTful APIs and various backend services. Optimized apps for speed, scalability, and user experience; demonstrated strong front-end tooling and performance best practices. Participated in code reviews and contributed to technical documentation and internal guidelines to share knowledge within the team.

Front End Developer Trainee at CAPYS IT SOLUTIONS

March 31, 2023 - September 16, 2025

Assisted in the development and maintenance of web applications, gaining foundational experience with HTML, CSS, JavaScript, and TypeScript. Contributed to project planning and scope definition, learning collaborative development workflows and remote team communication.

Frontend Developer Trainee at CAPYS IT SOLUTIONS

March 1, 2023 - September 15, 2025

Assisted in development and maintenance of web applications; gained foundational experience with HTML, CSS, JavaScript, and TypeScript; contributed to project planning and scope definition, learning collaborative development workflows and remote team communication.

Frontend Developer Trainee at CAPYS IT SOLUTIONS

March 1, 2023 - September 15, 2025

Assisted in the development and maintenance of web applications, gaining foundational experience with HTML, CSS, JavaScript, and TypeScript.