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Joshua Barraza

@joshuabarraza

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Software developer who built Flutter apps for water consumption tracking and offline rural meter reading.

Chile

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I developed Socio LH and SSR LH as a freelance developer, taking both Flutter apps from conception through implementation. Socio LH helps users track water consumption, payments, bills, and due dates; SSR LH supports offline meter reading in rural areas and syncs data when a connection is available.

At SistemasLH, I developed backend and frontend systems with Node.js and Angular, including a code generation program that automated 80% of code generation. Earlier, I worked on web and mobile interfaces at PRESERCOMP SpA and lhdatagroup, and edited video content at Valnet.

Experience

Work history, roles, and key accomplishments

Desarrollador flutter

REVIA

Nov 2025 - Jun 2026 (7 months)

Worked as Desarrollador flutter at REVIA.

Freelance Developer

Freelance

Jul 2025 - Nov 2025 (4 months)

Desarrollo de aplicaciones móviles multiplataforma con Flutter bajo el enfoque de Clean Architecture, gestionando todo el ciclo de desarrollo: diseño, programación, base de datos local, conexión con APIs y publicación.

🔹 Socio LH — Aplicación móvil pensada para facilitar la gestión del consumo de agua.
• Permite consultar el consumo mensual y revisar el historial de pagos.
• Descarga de boletas e

Power Creator (Video Editor / Content Creator)

Valnet

Nov 2024 - Feb 2025 (3 months)

Video Editor (Power Creator) at Valnet Inc.
• Professional video editing for digital platforms owned by Valnet Inc., a media company behind international outlets such as Screen Rant, CBR, TheGamer, and others.
• Editing videos tailored for YouTube and social media audiences, ensuring strong pacing, narrative clarity, and brand consistency across multiple channels.
• Coordinating with producers and

Programador full stack

SistemasLH

Apr 2020 - Nov 2023 (3 years 7 months)

Full-Stack Developer
Successfully accepted the role of Full-Stack Developer, demonstrating versatility by handling both backend development with Node.js and frontend development with Angular.
Innovatively designed and implemented an automatic code generation program for both backend and frontend, serving as the solution architect for the project.
Led the development of a large-scale system with hi

Desarrollador web

PRESERCOMP SpA

May 2019 - Apr 2020 (11 months)

I began my career as a Junior Developer working with Angular, a technology that was completely new to me at the time. Despite having no prior experience, I was driven by determination and a strong desire to take on a new professional challenge.
It was a fresh start that pushed me out of my comfort zone, but that steep learning curve allowed me to quickly gain valuable skills and develop a solid un

Desarrollador

lhdatagroup

May 2018 - Jan 2019 (8 months)

I worked at the company, enhancing programs originally developed in console mode with BBJ by creating more modern interfaces using Java Servlets and Android. My role involved transforming these applications into user-friendly and contemporary interfaces, providing users with a more modern experience.