Open to opportunities

César Orlando

@ceoleas

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Experienced Computer Engineer and Full-Stack developer specializing in software architecture and AI testing.

Ecuador

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What I'm looking for

I seek senior engineering roles where I can lead architecture, improve AI model quality, build scalable microservices, use CI/CD and cloud, and work within collaborative, quality-driven teams.

I am a Computer Engineer and Software Engineering Specialist with broad experience across frontend, middleware, backend, cloud, and database systems, delivering end-to-end solutions, ETL processes, and integration for banking, health, and enterprise clients. I have led analysis, design, development, testing and maintenance activities using Java, C#, Python, SQL Server, Oracle, Docker, CI/CD and microservices, and I apply quality standards and architecture best practices throughout the software lifecycle.

I have recent experience as an Artificial Intelligence Test Developer focusing on prompt and model evaluation, test automation, CI/CD pipelines, and performance monitoring, and I continue to perform full-stack freelance work including data recovery, web development, and systems administration. I am process-driven, quality-focused, and experienced with SCRUM, BPMN/Camunda, and cloud platforms to ensure reliable, scalable solutions.

Experience

Work history, roles, and key accomplishments

Current

Freelance Full Stack Developer

Current

Independent

Jan 2002 - Present (24 years)

Provided freelance full stack development, data recovery and system repair services using PHP, WordPress, Oracle, SQL Server, C# and Java for web and Windows environments.

PHP WordPress Oracle SQL Server C++Java data recovery Windows Web Development

Artificial Intelligence Test Developer

Revelo

Jan 2023 - Dec 2025 (2 years 11 months)

Evaluated and tested AI models, optimized prompts, built validation pipelines and CI/CD workflows, and automated multi-language test scenarios to ensure model quality and performance.

Python Java C++Pytest Junit GitHub Actions Docker SQL Server PostgreSQL Prometheus

Full Stack Developer

Intermix Technology

Aug 2019 - Mar 2021 (1 year 7 months)

Developed a Web Banking Credit Suite, Digital Banking and ERP, built services in C# .NET Core with Entity Framework, and implemented responsive front-end features, improving platform functionality and automation.

C++.NET Core Entity Framework SQL Server React JavaScript HTML5 CSS3 Camunda Git

Full Stack Developer

UNE - Emtelco

Apr 2014 - Feb 2015 (10 months)

Developed sales reporting and web features, managed Oracle and SQL Server databases, created stored procedures and ETL processes, and integrated web services across .NET and PHP stacks.

SQL Oracle Pl SQL .NET PHP JavaScript AJAX JSON ETL Excel

Systems Engineer

Engiant S.A.S.

Jun 2013 - Apr 2014 (10 months)

Designed, developed and tested web and database solutions including ETL and Oracle Application Express reports, and provided auditing and consulting for customer projects.

Java .NET ETL SQL Pl SQL HTML5 JavaScript XML

Analyst

Bancolombia (INNOVA Project)

Nov 2009 - Nov 2010 (1 year)

Analyzed and specified functional/non-functional requirements for core banking integration, and supported data extraction, integration and transformation using IBM middleware and UML modeling.

IBM Websphere DataStage UML Integration Data Modeling

Analyst - ERP

Sinap Ltda.

Feb 2008 - Aug 2008 (6 months)

Performed software analysis and design for public administration ERP, documentation, technical support, conceptual and data modeling, and applied quality standards including ISO 9001.

ERP UML Data Modeling Software Documentation Technical Support ISO 9001 Reengineering Testing Process Modeling

General Manager

Internet SolNet

Jan 2002 - Mar 2002 (2 months)

Managed internet center operations including PC hardware/software maintenance, server and network monitoring, and accounting functions for the facility.