Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I’m Pedro Henrique de Souza Araujo, a React developer with 7+ years of experience shipping production dashboards, debugging API integrations, and fixing authentication flows under tight deadlines. I have deep hands-on expertise diagnosing and resolving rendering issues, RESTful API bugs, and authentication breakdowns (JWT, OAuth, Firebase Auth) in existing React codebases. I excel at rapidly adapting to unfamiliar code, delivering mobile-responsive fixes across browsers, and deploying stable production builds — consistently meeting aggressive timelines. I’m a strong independent worker with a track record of zero-regression releases in fast-paced agency environments.…Hi, I’m Pedro Henrique de Souza Araujo, a React developer with 7+ years of experience shipping production dashboards, debugging API integrations, and fixing authentication flows under tight deadlines. I have deep hands-on expertise diagnosing and resolving rendering issues, RESTful API bugs, and authentication breakdowns (JWT, OAuth, Firebase Auth) in existing React codebases. I excel at rapidly adapting to unfamiliar code, delivering mobile-responsive fixes across browsers, and deploying stable production builds — consistently meeting aggressive timelines. I’m a strong independent worker with a track record of zero-regression releases in fast-paced agency environments.

Pedro Henrique de Souza Araujo

Full Stack Developer, Web Developer, Programmer, +3





Hi, I’m Pedro Henrique de Souza Araujo, a React developer with 7+ years of experience shipping production dashboards, debugging API integrations, and fixing authentication flows under tight deadlines. I have deep hands-on expertise diagnosing and resolving rendering issues, RESTful API bugs, and authentication breakdowns (JWT, OAuth, Firebase Auth) in existing React codebases. I excel at rapidly adapting to unfamiliar code, delivering mobile-responsive fixes across browsers, and deploying stable production builds — consistently meeting aggressive timelines. I’m a strong independent worker with a track record of zero-regression releases in fast-paced agency environments.…Hi, I’m Pedro Henrique de Souza Araujo, a React developer with 7+ years of experience shipping production dashboards, debugging API integrations, and fixing authentication flows under tight deadlines. I have deep hands-on expertise diagnosing and resolving rendering issues, RESTful API bugs, and authentication breakdowns (JWT, OAuth, Firebase Auth) in existing React codebases. I excel at rapidly adapting to unfamiliar code, delivering mobile-responsive fixes across browsers, and deploying stable production builds — consistently meeting aggressive timelines. I’m a strong independent worker with a track record of zero-regression releases in fast-paced agency environments.

Available to hire

Hi, I’m Pedro Henrique de Souza Araujo, a React developer with 7+ years of experience shipping production dashboards, debugging API integrations, and fixing authentication flows under tight deadlines. I have deep hands-on expertise diagnosing and resolving rendering issues, RESTful API bugs, and authentication breakdowns (JWT, OAuth, Firebase Auth) in existing React codebases.

I excel at rapidly adapting to unfamiliar code, delivering mobile-responsive fixes across browsers, and deploying stable production builds — consistently meeting aggressive timelines. I’m a strong independent worker with a track record of zero-regression releases in fast-paced 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

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Portuguese

Fluent

Spanish; Castilian

Intermediate

Work Experience

Software Engineer at Cadalys

August 1, 2025 - December 1, 2025

Software Engineer with strong experience across healthcare, fintech, and enterprise applications, building scalable full-stack systems using modern JavaScript technologies such as Next.js, Vite, Express, and Prisma ORM. Specialized in integrating AI and LLM solutions including OpenAI GPT, prompt engineering, and retrieval-augmented architectures to automate workflows and enhance user experience. Skilled in distributed systems, performance optimization, and cross-platform integrations. Proven track record leading end-to-end delivery of complex products, improving development processes, and driving innovation across engineering teams.

Software Engineer at My Digital Nomads

May 1, 2023 - August 1, 2023

Architected and built reusable boilerplate kits for social networks and marketplaces using Next.js and TypeScript, reducing new project setup time by 70% and reinforcing modern web technologies expertise while emphasizing clean code practices. Integrated authentication modules, media upload flows, and real-time communication features that supported both frontend and backend functionalities, leveraging Git proficiency and automated testing practices. Collaborated with cross-functional teams to prototype and deliver user-friendly web applications, applying security compliance, performance monitoring, and customer-centered development principles.

Software Engineer at Freelancer

January 1, 2019 - December 31, 2019

Built SPAs in React with Firebase & Algolia integrations for multiple clients. Implemented CI/CD pipelines on Bitrise and Vercel for automated mobile/web deployments.

Software Engineer at Coplan

January 1, 2018 - December 31, 2019

Analyzed legacy jQuery systems and rewrote reporting modules using JasperReports and SQL. Designed custom UI and back-end components following MVC in both Waterfall and Agile environments.

Software Engineer at Ábaco

January 1, 2016 - December 31, 2018

Developed modules for auction control and educational administration: UI, business logic, and database layers. Created management reports with JasperReports and optimized SQL queries for performance. Collaborated in Waterfall and Scrum teams alongside business analysts and QA engineers.

Full-Stack Engineer & Technical Lead at Lummia (SaaS – Own Project)

January 1, 2024 - Present

Architected a multi-tenant React/Next.js frontend with hostname-based routing and Upstash Redis-backed tenant domain resolution, plus per-tenant white-label booking sites. Built Python-adjacent automation pipelines using LangChain + Gemini/Ollama for lead enrichment (Firecrawl scrape → LLM analysis → Prisma persistence). Integrated AWS S3 presigned uploads and CloudFront-signed delivery with fallback strategies for scalable media handling. Implemented Stripe Connect checkout with destination transfers, platform application fees, and webhook-driven subscription lifecycle sync. Orchestrated async workflows with Inngest: Google Calendar sync, transactional emails, and time-shifted reminders with post-sleep state re-validation. Enforced code quality via Biome, Husky, commitlint in a Turbo monorepo (Yarn workspaces).

Project Lead & Senior Full-Stack Engineer at Previous Employer (Fintech/Healthcare)

January 1, 2021 - January 1, 2024

Scrum lead for a 5-engineer team delivering React and React Native front-ends powering 5,000+ MAU. Improved application performance through PostgreSQL query optimization and selective Prisma patterns. Reduced release overhead by implementing CI/CD pipelines (Bitrise + Vercel), enabling 6 consecutive monthly releases with zero regressions. Collaborated closely with product and design teams in a fully remote environment to hit aggressive MVP deadlines.

Full-Stack Engineer at My Digital Nomads

January 1, 2019 - January 1, 2021

Designed reusable Next.js and Express boilerplates reducing new project setup time by 70%. Containerized services with Docker and implemented daily CI pipelines for web and mobile targets. Delivered multiple client MVPs under aggressive timelines in a remote, Kanban-driven workflow.

Founder & Full-Stack Engineer at BuildUPFit (Own Project)

January 1, 2023 - Present

AI-powered fitness platform integrating OpenAI and LLaMA for personalized workout generation. Designed cloud infrastructure on AWS (EC2, S3, CloudFront) and implemented Algolia-powered search.

Software Engineer / Project Lead at Popstand (Software Agency)

August 1, 2019 - Present

Diagnosed and resolved React dashboard rendering issues across multiple production client projects (CRM dashboards for The Roof Resource, B2B portals for Swan Stonarts, healthcare platforms ModMD and SwitchCare), delivering fixes within 24–48 hours. Debugged complex API integration bugs in production (Firestore real-time subscriptions, Algolia cache, tRPC/REST parsing) across hybrid data architectures. Repaired and hardened authentication flows (Firebase Auth JWT cookie verification, refresh token rotation, OAuth redirect issues) and built RBAC-protected route guards for 4-tier roles. Ensured mobile responsiveness for healthcare apps (React Native/Expo) and web dashboards with Tailwind and cross-browser testing. Led QA before deployments, achieving 6 consecutive monthly releases with zero regressions. Managed sprint deliverables and deployment pipelines across Git/GitHub with CI/CD via Vercel and Firebase Deploy. Built a real-time Kanban dashboard with Firestore syncing, optimistic U

Software Developer at Coplan / Abaco

January 1, 2016 - January 1, 2019

Built and maintained enterprise web dashboards for public sector clients (accounting, inventory, auction control), debugging legacy jQuery interfaces and migrating to modern patterns.