Freelance Fullstack Engineers in São Roque

Freelance Fullstack Engineers in São RoqueFreelance Fullstack Engineers in São Roque

Projects People

Sorocaba, Brazil

Building AI Agents & SaaS with Next.js

Expert

Building AI Agents & SaaS with Next.js

Cover image for SaaS Platform: TENET AI (Built

SaaS Platform: TENET AI (Built on Replit) A multi-tenant AI agent platform developed entirely within the Replit ecosystem. Replit-First Workflow: Cloud IDE: Used Replit as the exclusive environment to build complex Python/FastAPI microservices without local setup. AI Assisted: Leveraged Replit Ghostwriter to accelerate boilerplate generation for the multi-agent orchestration logic. Debugging: Utilized the Replit Shell for real-time testing of WhatsApp API webhooks before pushing to production. Stack: Python, FastAPI, PostgreSQL. (Production deployed via Railway, Development via Replit).

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Cover image for PagueFlow: Personal Finance PWA (Built

PagueFlow: Personal Finance PWA (Built with Replit AI) A full-stack financial management application featuring expense tracking, dashboards, and authentication. Replit Development Workflow: AI-Driven Development: Heavily utilized Replit Ghostwriter to generate logic for the dashboard calculations and UI components (visible in Git history as "Assistant checkpoints"). Version Control: Managed the entire Git workflow directly via the Replit Git pane to track features and rollbacks. Integrations: Configured the connection with Supabase (Auth & Database) directly within the Replit environment variables and shell. Stack: TypeScript, Tailwind CSS, Supabase (Developed entirely in Replit).

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Cover image for BudgetCalc - Smart Project Estimator

BudgetCalc - Smart Project Estimator

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Cover image for Official Website: TENET AI (High-Conversion

Official Website: TENET AI (High-Conversion Landing Page) The public-facing portal and onboarding flow for the TENET AI ecosystem. Built with Replit: Rapid Prototyping: Used Replit's instant preview environment to iterate on the UI/UX design in real-time without local server setup. Frontend Performance: Optimized assets and code splitting directly within the Replit editor to ensure high Lighthouse scores. Zero-Config Dev: Leveraged Replit's pre-configured templates to jumpstart the development of the responsive layout. Stack: HTML5, Tailwind CSS, JavaScript (Developed in Replit).

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77

Fullstack Engineer(3)

Barueri, Brazil

Expert Software Developer: Elevating Your Business

Expert Software Developer: Elevating Your Business

Cover image for Open Insurance Brazil - Quote Patrimonial API Implementation

Open Insurance Brazil - Quote Patrimonial API Implementation

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Cover image for Golang Fibonacci REST API

Golang Fibonacci REST API

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5

Cover image for mock-services

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1

Cover image for Health-ERP App for Health Tech Company

Health-ERP App for Health Tech Company

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3

Fullstack Engineer(3)

Sorocaba, Brazil

AI Automation & API Developer for Startups and SaaS

New to Contra

AI Automation & API Developer for Startups and SaaS

Cover image for GitHub - Harleysoncim/cargaclick: Sistema de fretes modais

GitHub - Harleysoncim/cargaclick: Sistema de fretes modais

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Cover image for Exploring Scalable Backend Solutions for Freight Platforms

CargaClick1 is an experimental and development-focused version of the CargaClick platform. The main objective of this repository is to test and validate new technical approaches for the freight marketplace system, including backend architecture, API integrations, routing logic and cloud deployment strategies. While another CargaClick project exists as the main production-oriented repository, CargaClick1 focuses on prototyping, infrastructure experiments and system improvements before they are integrated into the primary platform. This project explores scalable backend structures, logistics workflow automation and integration with external services such as routing APIs and cloud infrastructure. Technologies involved include backend frameworks, containerized deployment, database design and API-driven system architecture.

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Cover image for https://github.com/Harleysoncim/sra-guiding-star

https://github.com/Harleysoncim/sra-guiding-star

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9

Cover image for AI-powered price intelligence system that

AI-powered price intelligence system that collects market data and generates insights using automation.

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28

Fullstack Engineer(1)

Andrei Flausino

São Roque, Brazil

Responsive Frontend & Fullstack Engineering

Responsive Frontend & Fullstack Engineering

Cover image for Full-Stack Blog

Full-Stack Blog

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Cover image for High Landing - Landing Page

High Landing - Landing Page

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Cover image for Responsive Christmas Website

Responsive Christmas Website

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Cover image for Personal Portfolio

Personal Portfolio

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3

Fullstack Engineer(1)