I am a Brazil-based QA Engineer with 3+ years of experience and a strong international background from an English immersion program in South Africa. I specialize in designing scalable test automation frameworks and building internal tools that transform QA from a bottleneck into an efficient engine. My core stack includes Cypress, Playwright, Postman, JavaScript/TypeScript, and CI/CD pipelines.
Throughout my career, I have focused on driving high-impact engineering results. To eliminate testing delays, I built an internal "Test Data Portal" (TDM solution) with 30+ data types, saving the team 50+ hours weekly. Additionally, during proactive security testing with Postman, I discovered 1 critical architectural vulnerability across multiple endpoints, successfully preventing a potential data leak of 20,000,000+ active users.
Currently ISTQB CTFL certified, my goal is to integrate advanced AI tooling into QA workflows and lead automation strategies that protect critical system architectures. With strong cultural adaptability, I am ready to collaborate with high-performing international teams.
Feel free to connect to discuss QA automation or global opportunities!
Cypress
Automated Testing
Manual Testing
API Testing
Performance Testing
Selenium WebDriver
Postman
Jira
CI/CD
SQL
Mobile App Testing
Security Testing
Stress Testing
Bug Reports
Scrum
Claudia R.
Rio de Janeiro, Brazil
$40/hr
5.0
16 jobs
I am an AI Automation Engineer and Python Backend Developer specializing in streamlining workflows, API integrations, and building robust agentic systems. With a strong foundation in both traditional coding and no-code platforms like n8n, I create intelligent pipelines that eliminate manual work and optimize business processes.
Currently, I contribute to an AI startup where I build agentic systems and develop applications using Python, FastAPI, Django, and React, implementing cutting-edge frameworks in the AI space, including LangChain, LangGraph, CrewAI, Hugging Face, and Ollama. Recently, I developed an end-to-end automation for ClickUp that transforms social media Reels into comprehensive marketing analyses. By leveraging LLMs and API integrations, this pipeline extracts trends and technical content aspects—such as hooks, triggers, and CTAs—from videos, automatically delivering actionable insights to the ClickUp admin and content creators. The objective is to fully automate the research process that precedes content creation.
I hold a postgraduate degree in Data Science and Big Data Analytics from Universidade Estácio de Sá and a Business degree from the Federal University of Rio de Janeiro (UFRJ), combining technical expertise with strategic business insight.
My technical skill set includes: • Backend & APIs: Python, FastAPI, Django, REST APIs, database design, and complex API integrations • Automation & No-Code: n8n, custom workflow design, workflow debugging, data extraction • AI & Data Science: Agentic workflows, LLMs, statistical analysis, and advanced data visualization • Frontend: React, modern UI development
Previously, I worked as a Marketing Analyst and Content Creator, where I applied SEO and data analytics to guide strategic business decisions. My academic research background in leadership and social development has shaped a methodical, structured approach to problem-solving, enabling me to thrive in complex, innovative projects.
I contribute to startups applying my backend, API, and AI automation expertise to high-impact projects that require scalable, intelligent solutions.
Communication Skills
Analytics Dashboard
Analytics
SEO Content
SEO Writing
SEO Audit
On-Page SEO
Ecommerce SEO
SEO Performance
Marketing Analytics
Marketing
Data Analysis
Italo S.
Brasilia, Brazil
$30/hr
5.0
4 jobs
Most AI agents can answer questions. I build AI systems that take action — they call APIs, process payments, route emails, and run reliably in production.
Top Rated on Upwork · 100% Job Success · 240+ billed hours delivering backend and AI automation for international clients.
WHAT I DELIVER
▪ AI agents with LangGraph and LangChain — custom tools, memory management, and production-ready orchestration.
▪ Backend APIs in Python (Django, Django REST Framework, FastAPI) — clean architecture, explicit data validation, and documentation.
▪ n8n automation workflows connecting LLMs (OpenAI, Claude / MCP) to your real business operations.
▪ Integrations: Mercado Pago, Stripe, Telegram, Discord, Slack, Gmail, Google Calendar, WhatsApp Business, and third-party APIs.
▪ Dockerized deployments with CI/CD — predictable, low-maintenance infrastructure.
RECENT PROJECTS
▪ AI-powered payment automation platform using Django, n8n, and Mercado Pago with intelligent webhook routing and subscription management.
▪ Multi-agent systems built with LangGraph and LangChain using custom tools, memory management, and production-ready orchestration.
▪ AI email triage using OpenAI with classification, confidence scoring, automated routing, and human fallback.
▪ Claude Skills connected to backend services through n8n webhooks, allowing AI to retrieve live business information and execute real actions.
HOW I WORK
Clear communication, realistic estimates, and code another engineer can maintain. Security is built in from the start: RBAC, input validation, and encrypted handling of sensitive data.
Send me a message describing what you want to automate — I'll reply with a concrete approach and an estimate.
Automation
Python
AI Agent Development
LangChain
n8n
Django
FastAPI
API Integration
AI Implementation
REST API
API Development
Bot Development
Payment Gateway Integration
Docker
PostgreSQL
Back-End Development
Discord Bot Development
Python Asyncio
Telegram API
Chatbot
Gustavo A.
Joinville, Brazil
$25/hr
4.8
2 jobs
Technology professional turned AI automation specialist, leveraging 9+ years of development experience to build intelligent systems that leverage Large Language Models (LLMs) and modern automation tools. My expertise lies in creating Python-based solutions and n8n workflows that transform manual processes into scalable, AI-powered operations. I bring a unique combination of deep technical background and cutting-edge AI integration skills to deliver end-to-end solutions.
🚀 My Expertise:
→ AI & LLM Integration: Expert in implementing LangChain, OpenAI GPT-4, and Anthropic Claude solutions. I design Retrieval-Augmented Generation (RAG) pipelines with pgvector, reducing human intervention by up to 85%. Specialized in prompt engineering and autonomous agent architecture.
→ n8n Workflow Automation: Design and deploy complex n8n workflows that integrate multiple APIs, handle data transformation, and trigger AI-powered actions. Expert in self-hosting, custom nodes, and creating intelligent automation pipelines for marketing, customer support, and business operations.
→ Python Development: Building FastAPI microservices, async operations, and data processing pipelines. I develop custom Python scripts that extend automation capabilities and create seamless integrations between AI models and business systems.
→ Full-Stack Development: Leverage my React, Next.js, and Node.js experience to create complete solutions with modern UIs, from Streamlit dashboards to production-ready web applications.
💼 Key Projects Delivered:
→ AI Marketing Automation Platform: Built n8n + Python pipeline integrating Facebook Ads, ActiveCampaign, and GPT-4, automating report generation and providing AI-driven insights.
→ RAG Customer Support System: Implemented intelligent knowledge base with pgvector, reducing response time by 85% and cutting follow-up workload dramatically.
→ Content Generation Engine: Developed n8n automation with GPT-4o that generates blog outlines from keywords, reducing content creation time by 60%.
→ Multi-Channel Integration Hub: Connected 15+ APIs through n8n with custom Python processors, creating unified automation workflows for enterprise clients.
💻 Core Skills:
🔹 AI/LLM: OpenAI GPT-4, Anthropic Claude, LangChain, LlamaIndex, RAG implementation, prompt engineering
🔹 Automation: n8n (expert level), workflow design, API orchestration, webhook handling
🔹 Python: FastAPI, asyncio, pandas, custom API development, data processing
🔹 Integration: REST APIs, GraphQL, OAuth, Facebook Ads API, Google APIs, CRM integrations
🔹 Infrastructure: Docker, AWS (EC2, Lightsail, S3), Linux, CI/CD
🔹 Full-Stack: React, Next.js, Node.js, Tailwind CSS (for complete solution delivery)
📊 Performance Tracking & Analytics:
Expert in implementing comprehensive tracking solutions using Google Tag Manager, Analytics, and custom dashboards to measure automation ROI and system performance.
🎯 Why Work With Me?
→ Proven AI Impact: Delivered measurable results like 85% reduction in manual tasks and 60% faster content creation
→ End-to-End Delivery: From architecture to deployment, including documentation and team training
→ Business-First Approach: I translate complex AI capabilities into clear business value and ROI
→ Rapid Iteration: Agile development with quick prototypes and continuous improvement
→ Future-Ready Solutions: Building with the latest AI technologies while ensuring scalability and maintainability
💬 Ready to transform your business with AI-powered automation? Let's discuss how we can implement intelligent workflows using Python, n8n, and cutting-edge LLMs. Message me with your automation challenge, and I'll show you what's possible!
Git
Python
JavaScript
HTML5
CSS 3
Google Analytics
Data Analytics
Google Tag Manager
Data Science
Looker Studio
n8n
FastAPI
LLM Prompt Engineering
AI Development
React
Daniele M.
Sao Paulo, Brazil
$75/hr
5.0
1 jobs
I build AI automations that run in production — not demos. Three of them are live right now, with the receipts in my portfolio below.
WHAT'S RUNNING TODAY:
• An AI sales assistant live on my own agency's website — LangGraph + Claude API, deployed on Railway, capturing qualified leads to Google Sheets 24/7.
• A lead generation pipeline of 6 self-hosted n8n workflows — multi-source scraping, enrichment, qualification scoring, dedup, results written to a Notion CRM and Google Sheets, run summaries via Telegram.
• An LLM-powered data pipeline — Python + Claude judging every item against business criteria, structured output to Sheets, Telegram alerts only when something relevant appears. Runs daily, zero infra cost.
WHAT I BUILD FOR CLIENTS:
- AI chatbots and agents for support, sales qualification and scheduling (WhatsApp, web)
- n8n workflow automation: scraping, enrichment, CRM writes, notifications
- RAG knowledge bases so agents answer from your real data — not generic guesses
- Human-in-the-loop flows: the agent pauses for your approval before critical actions
- Langfuse monitoring: quality, cost and errors tracked per conversation
HOW I WORK:
I design and build end-to-end, solo — architecture, prompts, integrations, deploy and daily operation. You talk directly to the person who writes the code.
STACK: n8n · LangGraph · LangChain · Claude API · OpenAI API · Python · RAG · Langfuse · WhatsApp Business API · HubSpot · Pipedrive · Google Workspace · REST APIs
Founder of DMA, an AI automation agency serving legal, healthcare, fitness and e-commerce businesses.
Tell me your most repetitive process — I'll tell you exactly how I'd automate it.
Automation
SQL
Customer Experience Management Software
Strategy
Artificial Intelligence
Chatbot Development
API Integration
Business Process Automation
Natural Language Processing
OpenAI API
LangChain
Customer Experience
Generative AI
Letacio M.
Sao Carlos, Brazil
$44/hr
4.9
66 jobs
I automate repetitive work between systems, websites and desktop applications.
Is your team doing things like this?
- using systems that should talk to each other but don’t
- copying data between websites, systems or spreadsheets
- filling forms manually
- processing emails one by one
- downloading files and moving them between systems
- updating spreadsheets every day
- logging into systems just to move information around or generate reports
If the answer is yes, I can automate these processes so your team stops wasting time on repetitive work.
Typical automation systems I build include:
- integrations between websites, APIs and databases
- automatic form filling using spreadsheets or databases as data sources
- email processing systems that read, classify and respond automatically
- desktop automation for Windows applications, Excel and legacy systems
- automated data extraction and synchronization between platforms
- scheduled cloud automations that run without your computer being on
How does this usually work?
There are two main ways to automate processes.
The first is **simulating human actions** — clicking, typing and navigating software exactly as a person would.
The second is **communicating directly with systems** through APIs or system-level automation.
I combine these two approaches depending on the problem.
This allows me to automate not only modern websites (browser automation), but also legacy systems such as ERPs, internal tools, Excel workflows and virtually any desktop application.
This makes solutions:
- faster
- more reliable
- cheaper to maintain
How projects usually start:
The simplest way is for you to **record a short video showing the task being performed.**
From there I analyze the workflow and propose the best way to automate it.
If you prefer, we can also schedule a quick call where you walk me through the process live.
This avoids long technical documents or complicated preparation — just show the workflow and we start from there.
Technologies I commonly use:
Python - Django - FastAPI - SQL
AutoHotkey - Make (Integromat) - Zapier
Airtable - Typeform - API integrations
Examples of systems I’ve built:
- mobile automation that reads screen and reacts in <40 ms
- automation that reads Excel files and fills web forms automatically
- systems that move data between websites automatically
- Gmail direct-access desktop client that archives email links into Google Docs, updates labels, and can log in as multiple users without opening the browser
- cloud automations running on schedule without human intervention
- email parsing systems that extract and process data automatically
- Jira API automation for task creation, reporting and workflow management
- voice commands that control computer operations
- poker software that scans available tables and opens them automatically based on player count, stack sizes and game modes
I also have a background in Quality Engineering, which means the systems I build are robust and thoroughly tested.
One insight that surprises many companies:
For every process that is clearly identified as a candidate for automation, there are usually **several other hidden workflows quietly wasting time and money** in daily operations.
Once the first automation is built, these opportunities tend to become much easier to spot.
If you already identified **one task worth automating**, chances are there are many more.
Send me a message and show me the process —
I’ll help you automate it and uncover the next opportunities to save time and reduce manual work.
Automation
Python
Robotic Process Automation
Bot Development
QA Engineering
Browser Automation
AutoHotKey
Automated Testing
Django
FastAPI
Business Process Automation
React
API
Selenium
Cypress
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