Roberto C

I have hands-on experience working with Large Language Models (LLMs), especially Claude AI. I have used Claude for tasks such as prompt engineering, content generation, automation workflows, coding assistance, debugging, data analysis, and AI-powered chatbot solutions. I understand how to create effective prompts, optimize AI responses, and integrate LLM capabilities into real-world projects.

I also have experience using AI tools to improve productivity, problem-solving, and client-focused solutions.

Front-end developer. Builds responsive web applications with HTML, CSS, JavaScript, and React. Develops reusable UI components and maintains readable, version-controlled code. Works in remote and asynchronous settings. Integrates REST APIs and manages loading states, errors, and data flow.

Supporting skills: Node.js, Python, foundational cybersecurity (OWASP basics, input validation, secure coding). Collaborates with back-end and security-oriented stakeholders.

Front-End Developer at Freelance (2023-01 – Present)

• Developed responsive web applications using React, JavaScript, HTML, and CSS.
• Built reusable UI components to improve development speed and consistency.
• Integrated REST APIs with handling for loading states, errors, and data flow.
• Used Git and GitHub for version control.

Front-End / Web Developer (2021-01 – 2023-12)

Part-time & Project-based

• Designed and developed web pages and applications with HTML, CSS, and JavaScript.
• Migrated legacy projects to React for scalability and maintainability.
• Implemented responsive designs for mobile and desktop.
• Collaborated with back-end developers on secure handling of user data.

Data Scientist / Data Analyst at Freelance & Remote Projects (2020-01 – Present)

• Worked on data analysis and machine learning projects across e-commerce, finance, healthcare, telecom, and public datasets.
• Performed data cleaning, preprocessing, and transformation using Python, Pandas, and NumPy.
• Conducted exploratory data analysis and statistical analysis using Pandas, Matplotlib, and statsmodels.
• Built and evaluated machine learning models using scikit-learn for classification, regression, and predictive analytics tasks.
• Developed automated reporting and data visualization solutions for business insights.
• Used SQL extensively for querying, filtering, aggregating, and transforming large datasets.

Bachelor of Science in Computer Science – Addis Ababa Science and Technology University (2021-01 – 2025-12)