Johaina Chávez

Data Scientist & Full-Stack Developer

Python • AI • Data Science

Data Scientist architecting intelligent systems from statistical foundations to production deployment. Expert in Python-driven analytics, machine learning pipelines, and modern full-stack implementation.

Professional Profile

Data Scientist specialized in Python, machine learning, and artificial intelligence. Passionate about creating efficient technological solutions and transforming data into actionable insights using modern development stacks and intelligent automation systems.

Technology Stack

Data Science & Analytics

Python (Pandas, NumPy)Scikit-learnPower BITableauPostgreSQL

Modern Development Stack

Next.jsReactTypeScriptFastAPISupabase

Micro SaaS & Rapid Development

Supabase PlatformStripe IntegrationVercelReal-time APIs

Specializations

Data Science & Business Intelligence

Predictive analytics and statistical modeling, ETL pipeline design and data transformation, advanced visualization and dashboard development.

Modern SaaS Development

Rapid MVP development with Supabase + Next.js stack, database architecture and PostgreSQL optimization for SaaS, authentication systems and row-level security implementation.

AI Integration & Automation

Modern AI tools integration (Claude API, OpenAI), business process automation and workflow optimization, intelligent systems and AI-powered data analysis.

Real-time Applications

WebSocket integration and real-time data processing, scalable analytics architecture, modern deployment and monitoring solutions.

Development Approach

AI-Assisted Development

Leveraging Cursor IDE with Claude for rapid prototyping and modern development workflows.

Modern Stack

Next.js, TypeScript, Tailwind CSS, Supabase for scalable and maintainable applications.

Agile & Automated

Scrum methodology with continuous testing, clear documentation, and automated CI/CD.

“I combine modern development practices with AI tools to create efficient, scalable solutions that transform data into actionable business insights.”

Technical Expertise

Comprehensive technical skills backed by professional certifications and real-world project experience.

Professional Certifications

Programming & Development

  • Python Development
  • SQL Database Management
  • Scrum Methodology

Data Science & Machine Learning

  • Data Science Fundamentals
  • Machine Learning Implementation
  • NLP & Deep Learning

Business Intelligence

  • Data Analytics & Visualization
  • Power BI Dashboard Development
  • Tableau Advanced Analytics
  • Looker Studio with GA4

Artificial Intelligence

  • AI Prompt Engineering
  • Modern AI Tool Integration

Featured Projects

Automated Management System

Complete inventory management automation with real-time dashboard and robust APIs

Technologies
PythonFastAPISupabaseNext.js
Key Features
Real-time DashboardREST APIsData AnalysisAutomation

Full-Stack Web Applications

Modern SaaS applications with authentication, payments, and interactive dashboards

Technologies
Next.jsTypeScriptTailwind CSSFastAPI
Key Features
AuthenticationPayment IntegrationResponsive DesignPerformance Optimization

Data Analysis & BI Solutions

Business intelligence implementations with automated reporting and machine learning

Technologies
PythonPandasPower BITableau
Key Features
ETL PipelinesInteractive DashboardsML ModelsAutomated Reports

AI Integration Solutions

Conversational AI, automation, and predictive analytics for business optimization

Technologies
Claude APIOpenAINLPPython
Key Features
Chatbot DevelopmentProcess AutomationPredictive ModelsAPI Integration

Services Offered

SaaS/Micro-SaaS Development

End-to-end application development with modern technologies and best practices

  • Multi-tenant architecture design
  • Payment integration (Stripe, MercadoPago)
  • Authentication systems
  • Responsive web applications

Data Science & Analytics

Transform your data into actionable insights with advanced analytics and ML

  • Exploratory data analysis
  • Machine learning models
  • Business intelligence dashboards
  • Automated reporting systems

AI Integration & Automation

Leverage modern AI tools to optimize business processes and workflows

  • Conversational AI development
  • Process automation scripts
  • API integrations
  • Prompt engineering optimization

Full-Stack Development

Modern web applications with scalable architecture and clean code

  • Frontend: React, Next.js, TypeScript
  • Backend: FastAPI, PostgreSQL
  • Cloud deployment and CI/CD
  • Performance optimization

Ready to tackle complex data challenges or develop innovative SaaS solutions? Let's discuss how my data science and development expertise can drive your project forward.

Let's Collaborate

Interested in discussing complex data challenges or collaborative technical projects? Let's connect.

Available for Strategic Consultations

I'm currently accepting new strategic consulting engagements. My focus is on enterprise AI transformation and performance optimization projects.

Contact Information

Email

chavezjohaina@gmail.com

Primary contact method

Location

Buenos Aires, Argentina

Based in Argentina, serving globally

LinkedIn

@johainach

Professional network and portfolio

GitHub

@JohainaCh

Open source projects and code portfolio

Response Times

Strategic Inquiries

24-48 hours

Initial consultation requests and strategic discussions

Project Discussions

2-3 business days

Detailed project planning and implementation discussions

Professional Guidelines

What to Expect:
  • Professional and timely responses
  • Clear communication about scope and timelines
  • Honest assessment of project feasibility
  • Transparent pricing and deliverables
Initial Consultation:
  • Brief discussion of your objectives
  • Assessment of project scope and requirements
  • Discussion of timeline and approach
  • Next steps and proposal if appropriate

Ready to tackle complex data challenges? I'm here to help you transform your data into actionable business intelligence.

Contact for Technical Discussion