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I'm a versatile full-stack developer with almost a decade of experience. My expertise lies in low-code platforms such as Bubble, custom code solutions, and a touch of cloud-based DevOps. I have built enterprise-grade web applications in Bubble.io, created custom APIs, and developed backend systems using Python, Go, and JavaScript frameworks. I also lead end-to-end product development for startups and established companies across real estate, recruitment, SaaS, e-commerce, and tech services. I design user-centric architectures, deliver secure and scalable solutions, and implement CI/CD pipelines, AI-enabled data pipelines, and robust integrations with third-party services. I’m passionate about languages, learning new technologies, and collaborating with product and compliance stakeholders to drive impact while maintaining quality and reliability.…I'm a versatile full-stack developer with almost a decade of experience. My expertise lies in low-code platforms such as Bubble, custom code solutions, and a touch of cloud-based DevOps. I have built enterprise-grade web applications in Bubble.io, created custom APIs, and developed backend systems using Python, Go, and JavaScript frameworks. I also lead end-to-end product development for startups and established companies across real estate, recruitment, SaaS, e-commerce, and tech services. I design user-centric architectures, deliver secure and scalable solutions, and implement CI/CD pipelines, AI-enabled data pipelines, and robust integrations with third-party services. I’m passionate about languages, learning new technologies, and collaborating with product and compliance stakeholders to drive impact while maintaining quality and reliability.

João Campello

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

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I'm a versatile full-stack developer with almost a decade of experience. My expertise lies in low-code platforms such as Bubble, custom code solutions, and a touch of cloud-based DevOps. I have built enterprise-grade web applications in Bubble.io, created custom APIs, and developed backend systems using Python, Go, and JavaScript frameworks. I also lead end-to-end product development for startups and established companies across real estate, recruitment, SaaS, e-commerce, and tech services. I design user-centric architectures, deliver secure and scalable solutions, and implement CI/CD pipelines, AI-enabled data pipelines, and robust integrations with third-party services. I’m passionate about languages, learning new technologies, and collaborating with product and compliance stakeholders to drive impact while maintaining quality and reliability.…I'm a versatile full-stack developer with almost a decade of experience. My expertise lies in low-code platforms such as Bubble, custom code solutions, and a touch of cloud-based DevOps. I have built enterprise-grade web applications in Bubble.io, created custom APIs, and developed backend systems using Python, Go, and JavaScript frameworks. I also lead end-to-end product development for startups and established companies across real estate, recruitment, SaaS, e-commerce, and tech services. I design user-centric architectures, deliver secure and scalable solutions, and implement CI/CD pipelines, AI-enabled data pipelines, and robust integrations with third-party services. I’m passionate about languages, learning new technologies, and collaborating with product and compliance stakeholders to drive impact while maintaining quality and reliability.

Available to hire

I’m a versatile full-stack developer with almost a decade of experience. My expertise lies in low-code platforms such as Bubble, custom code solutions, and a touch of cloud-based DevOps. I have built enterprise-grade web applications in Bubble.io, created custom APIs, and developed backend systems using Python, Go, and JavaScript frameworks. I also lead end-to-end product development for startups and established companies across real estate, recruitment, SaaS, e-commerce, and tech services.

I design user-centric architectures, deliver secure and scalable solutions, and implement CI/CD pipelines, AI-enabled data pipelines, and robust integrations with third-party services. I’m passionate about languages, learning new technologies, and collaborating with product and compliance stakeholders to drive impact while maintaining quality and reliability.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Portuguese

Fluent

English

Fluent

French

Intermediate

Spanish; Castilian

Intermediate

Japanese

Beginner

Work Experience

Technology Lead / Full-Stack Developer at LoadUp

July 1, 2024 - Present

Led the design and delivery of a high-performance Typeform-like dynamic survey platform using React, TypeScript, and Node.js, including a drag-and-drop builder to power applicant intake and qualification at scale.

Full-Stack Developer at Job Cloud

June 1, 2023 - July 1, 2024

Sole engineer behind Youma, a TikTok-inspired, mobile-first recruitment app. Built frontend in React/TypeScript, backend in Node.js, and delivered cross-platform mobile apps with Flutter and Kotlin, integrating internal and third-party APIs for a rich, interactive experience. Designed a low-latency media pipeline with adaptive bitrate streaming (HLS), real-time performance analytics, and Elasticsearch-based candidate insights.

Full-Stack Developer at MoneyPhone

December 1, 2022 - June 1, 2023

Built a multi-tenant loan management portal for loan officers with a React/TypeScript frontend and a Python backend (Django/FastAPI). Implemented OAuth 2.0 with JWT, secure token rotation, fine-grained RBAC, hardened session management, and a modern internal CMS for loan products, credit rules, and operations. Designed data-driven dashboards and automated workflows with real-time updates and server-side pagination.

Full-Stack Bubble.io Developer at GameScribes

September 1, 2020 - December 1, 2022

Stabilized and modernized the internal localization and project management platform. Rebuilt frontend with React/TypeScript and improved state management with Redux for long-term maintainability; diagnosed and resolved critical bugs and performance bottlenecks; optimized API integration logic, and implemented lazy loading, memoization, and error boundaries for resilience.

Full-Stack Developer at YZR

June 1, 2022 - September 1, 2022

Contributed to an AI-driven platform that automated product data normalization and enrichment at scale. Maintained frontend with React/TypeScript, implemented complex state management and modular architecture; developed end-to-end backend logic and third-party APIs to support AI pipelines for data standardization, classification, and labeling; optimized asynchronous data flows and caching for scalable API communication.

Full-Stack Developer at Youma

April 1, 2019 - February 1, 2021

Led development of a TikTok-inspired recruitment app on Switzerland-based project, delivering frontend in React/TypeScript, backend in Node.js, and cross-platform mobile apps with Flutter/Kotlin; integrated complex APIs and implemented real-time analytics and performance monitoring.

Full-Stack Developer at 5 Metas

May 1, 2017 - February 1, 2019

Developed four client projects and internal solutions; contributed across frontend and backend, focusing on scalable, robust code and delivery for a mix of internal banking-related and client-facing apps.

Android Developer (Intern) at Wow Plug

April 1, 2021 - July 1, 2021

Developed an Android app to help users locate and schedule charging sessions for electric vehicles. Created a map-based interface inspired by Uber to find nearby charging stations and book charging times, supporting EV adoption and eco-friendly transportation.