Felix A.

Key Skills

Software

AWS SageMaker

Anno-Mage

Appen

Argilla

Axiom AI

Top Subject Matter

Software development training (web technologies, programming, and digital tools)

Legal Services & Contract Review

Regulatory Compliance & Risk Analysis

Top Data Types

Computer Code Programming

Text

Document

Top Task Types

Data Collection

Prompt + Response Writing (SFT)

Freelancer Overview

I am a Senior Backend Software Engineer with over five years of experience building robust, scalable systems, now leveraging my deep technical background to specialize in AI training data pipelines. My extensive engineering experience gives me a distinct advantage in understanding model architecture needs, creating data taxonomies, and identifying complex edge cases that non-technical annotators miss. I excel at writing automated scripts to preprocess raw data, validate label consistency, and optimize dataset curation for machine learning models.What sets me apart is my ability to bridge the gap between high-level engineering and meticulous data quality. Having designed backend APIs and managed large databases, I approach data labeling with a systemic, programmatic mindset. I do not just label data; I build efficient scripts to clean it, structures to organize it, and frameworks to ensure the absolute integrity of training inputs, directly accelerating model training and deployment cycles.

Labeling Experience

Software Technical Trainer at DigiHub Tech Solutions

OtherComputer Code ProgrammingText Summarization

Provided software development and web-technology training, including instruction and practical workshops covering coding concepts and tools. Assessed learners through project-based evaluations, helping them develop competency with programming and modern web stacks. Maintained and updated course materials in collaboration with curriculum partners to reflect evolving industry practices. • Delivered in-person and virtual training sessions for students, professionals, and corporate clients. • Covered topics including HTML, CSS, JavaScript, React.js, NodeJS, GoLang, and database technologies. • Conducted practical coding workshops, assessments, and continuous progress tracking. • Hosted community tech meetups, bootcamps, and career seminars to support digital literacy.

2021 - 2025

Education

Work History