Available to hire
Hello! I’m Esteban Estrella, a Software Engineer with over 9 years of experience turning ideas into reliable software and intelligent systems. I enjoy building end-to-end solutions—from data pipelines and ML models to responsive web apps—using Python, ML frameworks, and modern cloud and container technologies. I’ve worked on image classification, credit scoring, sentiment analysis, and e-commerce analytics, delivering value through clean code, scalable architectures, and clear communication.
In previous roles at Opinno and various IT leadership positions, I led development efforts, steered deployments, and helped teams navigate technical challenges. I hold a Systems Engineering degree from Universidad Israel, and I’m passionate about blending software engineering with applied machine learning to solve practical problems.
Language
Spanish; Castilian
Fluent
English
Intermediate
Work Experience
Machine Learning Engineer at Aanyone AI
June 1, 2025 - PresentDeveloped and deployed an image classification CNN model for vehicle make and model prediction from unstructured images, achieving 82% accuracy. Deployed as an API-based web service using Docker on AWS, ensuring scalability. Built supervised learning models using Decision Tree, XGBoost, and LightGBM for housing credit risk analysis processing over 350,000 transactions, achieving ROC AUC greater than 0.72. Designed a sentiment analysis pipeline for a movie streaming platform using BoW, TF-IDF, and word embeddings to classify user reviews by sentiment. Developed a comprehensive ELT data pipeline for revenue and delivery analysis at a major Latin American e-commerce site, generating actionable insights through SQL and data visualization.
Software Engineer at Opinno
July 31, 2024 - September 1, 2025Designed and developed digital solutions for startups and large enterprises for 5 years, addressing operational and scalability challenges. Engineered robust web applications using React, Gatsby, Node.js, Laravel, PHP, and Drupal, improving system reliability and client satisfaction. Managed full development lifecycles from requirements gathering to deployment, ensuring on-time delivery. Created responsive and sustainable architectures enhancing user experience and exceeding client expectations.
Systems Analyst at Grupo Corporativo Edinun
June 30, 2019 - September 1, 2025Managed IT operations for approximately 60 users across multiple locations, providing help desk support and maintaining operational integrity of IT equipment. Administered ERP system and network infrastructure, performing preventive and corrective maintenance. Prepared periodic reports to communicate IT activities.
IT Manager at Internacional de Viajes y Turismo CRETER TOURS
April 30, 2018 - September 1, 2025Directed IT systems ensuring proper performance and data backup maintenance. Planned, organized, and controlled activities for development, acquisition, and maintenance of all IT systems. Administered and designed web pages using WordPress, and managed network and email systems.
IT Manager at Brandim CIA LTDA.
September 30, 2015 - September 1, 2025Managed systems and hardware with daily backups and enforced security protocols, resulting in zero data loss. Established protocols and procedures for hardware and software use to improve departmental efficiency. Directed system operations including network management, MySQL database administration, and email systems to ensure smooth functioning.
AI Data Trainer at Handshake
October 1, 2025 - PresentTrained frontier AI models, applying subject-matter expertise to ensure high-quality, technically accurate outputs for top laboratories. Supported fast-paced, high-volume tasks and maintained fluency in English to collaborate with global teams. Technologies include Python, Docker, AWS.
AI Data Trainer at Revelo
September 1, 2025 - PresentEvaluated and validated complex financial data analysis solutions in containerized environments (Docker/AWS SageMaker) to ensure adherence to unit tests and rubrics. Audited AI-generated code and configured cloud-based development environments to scale Code Interpreter tasks.
AI Data Trainer at Anyone AI
June 1, 2025 - PresentDeveloped and deployed an image classification CNN for vehicle make/model; built supervised models for housing credit risk; designed sentiment analysis pipeline; built an ELT data pipeline for revenue and delivery analytics.
Software Engineer at Opinno
August 1, 2019 - July 31, 2024Designed and developed digital solutions and web applications for startups and enterprises; built robust front-end and back-end systems using React, Gatsby, Node.js, Laravel, PHP, and Drupal; led full development lifecycles from requirements to deployment.
Systems Analyst at Grupo Corporativo Edinun
May 1, 2018 - June 30, 2019Managed IT operations for ~60 users across multiple locations; provided help desk support; administered ERP and data networks; performed preventive and corrective maintenance and produced periodic IT operation reports.
IT Manager at Internacional de Viajes y Turismo CRETER TOURS
February 1, 2016 - April 30, 2018Directed IT operations, ensured data backups, planned and controlled IT system development and maintenance; administered web pages (WordPress) and managed data networks and email systems.
IT Manager at Brandim CIA LTDA.
February 1, 2014 - September 30, 2015Managed all systems and hardware, ensured daily backups and information security; established protocols to improve department efficiency; oversaw network, MySQL database, and email system operations.
Education
System Engineer at Universidad Israel
January 1, 2017 - September 1, 2025Systems Engineer at Universidad Israel
January 1, 2017 - February 20, 2026Qualifications
JavaScript fundamentals
January 1, 2021 - September 1, 2025React, Redux, Typescript, Firebase: Fullstack Serverless
January 1, 2021 - September 1, 2025Industry Experience
Software & Internet, Financial Services, Retail, Transportation & Logistics, Travel & Hospitality, Professional Services, Media & Entertainment, Other
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