I am a software developer with over 15 years of experience as a Full Stack Developer, specializing in designing and implementing robust, scalable applications. I have strong backend and frontend skills and have worked on integrations with enterprise systems such as SAP and Salesforce, always with a focus on quality, security, and performance. I have led cross-functional teams and managed end-to-end projects across Latin America for clients like Citi, Nestlé IT LATAM, and Falabella, embracing agile methodologies (Kanban/Scrum) and modern tooling. My technical toolkit includes Java, .NET/C#, Ruby on Rails, Blazor, React, and a broad set of databases and APIs, with a passion for delivering reliable software that drives business value.

Juan Esteban Nieto Toro

I am a software developer with over 15 years of experience as a Full Stack Developer, specializing in designing and implementing robust, scalable applications. I have strong backend and frontend skills and have worked on integrations with enterprise systems such as SAP and Salesforce, always with a focus on quality, security, and performance. I have led cross-functional teams and managed end-to-end projects across Latin America for clients like Citi, Nestlé IT LATAM, and Falabella, embracing agile methodologies (Kanban/Scrum) and modern tooling. My technical toolkit includes Java, .NET/C#, Ruby on Rails, Blazor, React, and a broad set of databases and APIs, with a passion for delivering reliable software that drives business value.

Available to hire

I am a software developer with over 15 years of experience as a Full Stack Developer, specializing in designing and implementing robust, scalable applications. I have strong backend and frontend skills and have worked on integrations with enterprise systems such as SAP and Salesforce, always with a focus on quality, security, and performance.

I have led cross-functional teams and managed end-to-end projects across Latin America for clients like Citi, Nestlé IT LATAM, and Falabella, embracing agile methodologies (Kanban/Scrum) and modern tooling. My technical toolkit includes Java, .NET/C#, Ruby on Rails, Blazor, React, and a broad set of databases and APIs, with a passion for delivering reliable software that drives business value.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
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Language

Spanish; Castilian
Fluent
English
Advanced
French
Beginner

Work Experience

Full Stack Developer at SII Group (Client CITI Bank)
August 1, 2024 - December 31, 2025
Analyzed and developed software requirements using agile methodologies (Kanban/Scrum) with Jira. Responsible for analysis, documentation, and software development across backend and frontend layers, with tooling including Java 11/17, Maven, C#, .NET Core 6, Visual Basic, SQL Server, Git, Jenkins, SonarQube, and BlackDuck. Implemented unit testing and automation scripts.
Full Stack Developer at Manpower Experis (Client HDI Seguros)
August 1, 2022 - August 31, 2024
Analyzed and developed software requirements using Blazor and C#, integrated with Salesforce via REST APIs with .NET Core 6, implemented message queues with RabbitMQ, and worked with Oracle 10g/11g. Migrated internal systems from Java 8 to .NET MVC Framework 4.8, applying Jira and Scrum.
Commercial Planning Specialist Information Technology at Nestlé (IT LATAM)
May 1, 2020 - July 31, 2022
Developed desktop applications with WCF, C#, SQL Server, and SAP data exchange via XML flat files. Led Level 3 IT support across Latin America, managed local projects, audits, and country-specific processes, while continuing software development in C#.
Technical Lead – Software Engineer at Grupo ALTO
April 1, 2016 - April 30, 2020
Team leader responsible for user stories, spikes, and tasks. Developed mobile apps for Android and iOS using Ionic v5, migrating later to React Native v0.70.x. Designed and implemented REST APIs with C#, and later with Ruby on Rails.
Software Engineer at Penta Vida - Exynko
August 1, 2015 - March 31, 2016
Performed system analysis and development across multiple software lifecycle stages. Supported financial business processes and incident resolution using C# Framework, MVC, ASP.NET, and JavaScript.
Systems Analyst at Falabella retail S.A.
June 1, 2014 - July 31, 2015
Participated in various software development stages, supporting users with internal system improvements. Worked with Oracle (SRX internal system), Uniface, ETL, and Control-M.
Programmer Analyst at Cuprum AFP
June 1, 2010 - May 31, 2014
Full stack developer working with C#, MVC2, ASPX, JavaScript with jQuery and Oracle databases (ETL, procedures, views, modeling, triggers).

Education

Bachelor in Computer Engineering at Universidad de las Américas
January 11, 2030 - January 1, 2016
Associate Degree in Computer Programming at Instituto Profesional Duoc UC
January 11, 2030 - January 1, 2009

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Financial Services, Retail, Professional Services

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
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