Arsenio Jiménez,
System Engineer /
Full Stack Developer

I build complete digital products — from architecture to deployment. In over 7 years as a Full-Stack engineer, I've taken business ideas to production: e-commerce platforms that process real payments, access control systems that monitor buildings in real time, and internal tools that replace manual processes with automated workflows.

What sets me apart isn't the list of technologies I know, but what I do with them: understand the business problem, design the right solution (not the most complex one), build it fast, and make sure it scales. I've worked solo and on teams, at startups and established companies, always focused on delivering real value to the end user.

I move comfortably between frontend and backend, between relational and NoSQL databases, between REST and GraphQL APIs. I make technical decisions, do code reviews, and get my hands dirty in production when needed.

Professional experience

Built from scratch a web project that enabled report visualization for one of the company's business verticals: access control. Implemented browser-based hardware integration for taking photos (guest registration), scanning QR codes (invitations), and making calls (intercom). Developed a real-time solution using Firebase for monitoring entrances and enhancing security.

Built a B2B e-commerce platform with price comparison and purchasing through payment gateway integration (Transbank – ETpay), selling directly from producers. Delivered a B2C website connected to automatic delivery via Cabify. Designed and developed from scratch a CRM for warehouse inventory management and invoicing.

Led the end-to-end implementation of a digital signature feature essential for legally validating employee payslips, integrating external identity-verification services and SMS-based PIN authentication. Improved product quality by introducing API mocking, FactoryBot workflows, and external API endpoint testing with RSpec.

Joined a project with a critical client-committed deadline where progress was significantly behind schedule. Contributed across the stack: JavaScript frontend for insurance selection and tailored offer generation, and Laravel backend with design patterns for the administrative workflow.

Maintained an online academy platform similar to Masterclass with a Laravel backend and Vue.js frontend. Developed a feature preventing simultaneous video playback on multiple devices for ticket-sold events. Resolved issues related to credit card payments and invoice generation.

Development of fleet control platforms and GPS services, focused on improving processes and building new tools. Web and mobile app development for iOS and Android.

Education

General Systems Theory, Systems Analysis & Design, Expert Systems, Neural Networks. Second leader of the UBANET study group (Microsoft). Participated in the Ingenium online classes project.

Recent projects

Neo Warehouse

Warehouse management system — SPA web platform to optimize logistics operations and inventory control. (2026)

Tienda Capullito

E-commerce website for gift products. (2025 – 2026)

Languages

• Spanish: Native
• English: B2