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J
John A.

John A.

Senior Fullstack Software Engineer & AI Training Specialist

Chile flagConcepción, Chile

Key Skills

Software

Label StudioLabel Studio
ProdigyProdigy
Internal/Proprietary Tooling
Other

Top Subject Matter

Information Technology & Software Engineering
Finance & LegalTech
Business Automation & Operations

Top Data Types

Computer Code ProgrammingComputer Code Programming

Top Task Types

Text GenerationText Generation
Question AnsweringQuestion Answering
Text SummarizationText Summarization
RLHFRLHF
Fine-tuningFine-tuning
Red TeamingRed Teaming
Evaluation/RatingEvaluation/Rating
Computer Programming/CodingComputer Programming/Coding
Function CallingFunction Calling
Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)

Freelancer Overview

Senior Fullstack Software Engineer with 5+ years of experience in high-performance web development and B2B automation. Expert in building scalable architectures using Next.js, Supabase, and Node.js. Specialized in optimizing complex operational workflows through self-hosted n8n and advanced API integrations. Proven track record in clean code development, backend engineering, and system performance optimization. Strong analytical mindset with an expert-level ability to evaluate, debug, and improve AI-generated code across multiple languages.

Education

P

Platzi

Professional Certification in Web Development, Ingeniería Frontend & JavaScript

Professional Certification in Web Development
2022 - 2022
N

Noble Work Foundation

Fullstack Web Development Bootcamp, Fullstack Web Development

Fullstack Web Development Bootcamp
2022 - 2022

Work History

F

Freelance

Fullstack Developer & Automation Engineer (Freelance)

Concepción
2021 - Present