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

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.

See more

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
See more

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.

Education

Bachelor's in Computer Science at Federal University of Mato Grosso
January 1, 2013 - January 1, 2018
B.Sc. in Information Systems at Universidade do Sul de Santa Catarina (Unisul)
January 1, 2016 - January 1, 2020
B.Sc. at Universidade do Sul de Santa Catarina (Unisul)
January 1, 2016 - January 1, 2020
Computer Science at IFMT (Instituto Federal de Mato Grosso)
January 11, 2030 - June 5, 2026

Qualifications

Add your qualifications or awards here.

Industry Experience

Healthcare, Software & Internet, Professional Services, Financial Services, Life Sciences, Computers & Electronics, Media & Entertainment