15+ years building systems that have to hold up

• Ruby on Rails 8
• MySQL 8
• Amazon RDS
• Amazon EC2
• React Native
• Expo
• TypeScript
• SQLite
• MCP

• Founding team member, involved in product, technical and business decisions.
• Designed and built the offline-first mobile app from scratch in React Native on Expo, for iOS and Android. Over a year of continuous development; live on the App Store and Google Play.
• Defined and implemented the synchronisation strategy: fire-and-forget dispatch from the device plus a symmetric reconciliation pass, so field data is captured without connectivity and device/server divergence is resolved without data loss.
• Integrated the mobile app and the web platform through versioned sync contracts: the backend generates and publishes the contract for every payload and the app consumes it as a fixture, so its transformation tests fail when the contract moves. Divergence between the two sides surfaces in CI instead of in the field.
• Designed and implemented the platform's authentication on OpenID Connect with PKCE.
• Fullstack development of the web platform, including the inspection checklist engine with multiple question types and nested structures.
• Established the testing practice across both repositories: separate unit and integration suites on the mobile app, and unit, integration and system tests with measured coverage on the web platform. Linting, formatting and static security analysis run on every commit.
• Designed and built the MCP integration, exposing the platform to AI assistants for task creation, checklist editing and publishing, issue management and document lookup.
• Agent-assisted development as the standard workflow: one isolated worktree per task, agents implementing and reviewing against written repository conventions, and an in-house MCP server giving them access to the platform domain. Technical judgement, review and the decision to merge stay human.
• Production observability instrumentation and failure resolution on field devices, where the error rarely reproduces on a desk; including silent validation errors that caused complete rendering failures in the editor.
• Competitive analysis of the field inspection software market as input for product decisions.

• Ruby on Rails 8
• MySQL 8
• Amazon RDS
• Amazon EC2

• Development and maintenance of a SaaS platform for carbon footprint calculation and waste management.
• Resolved product issues arising from continuous production use: diagnosis, correction and stabilisation on a live system with active users.

• Custom projects for external clients and own initiatives, covering design, implementation and production rollout.

• Ruby on Rails
• Stimulus
• Turbo
• PostgreSQL
• Tailwind
• Docker

• Technical leadership on automated operational management solutions.
• Permissions and access system with time-based control and access windows per user and resource.
• Endpoint modernisation, application integration and resource optimisation.
• Handling large data volumes on systems with no prior documentation.

• Symfony
• .NET
• Java
• Ruby
• MySQL
• PostgreSQL
• DB2
• CentOS

• Project lead and sole developer of SIEC3, the national police's integrated road accident statistics system: a joint initiative with the Ministries of Transport and Health to record and classify road accidents and produce analysis to guide public prevention policy.
• Picked the project up after years of abandonment, its C# code built on discontinued modules: by reverse engineering the code and data model I carried over requirements, models and use cases, and rewrote the entire application in Symfony 2 over roughly a year and a half, with authentication through Clave Única. The code was delivered to the national police's official repositories.
• Ran and maintained, at CONASET, the driving test system used by municipalities, across every front: direct support to municipalities, systems and database administration, and updates to the question bank.
• Migrations, backups, repairs and security testing on the production system.
• Technical counterpart to the Ministry of Transport datacenters, managed as a service provider, and to the external development and support vendors.
• Operational maintenance and management of strategic projects with the National Road Safety Commission, the national police force, the Ministry of Transport and Telecommunications, the Ministry of Health and the Civil Registry.

• PHP
• Symfony
• HTML5
• Bootstrap
• MySQL

• ERP-CRM software, web content management and online ordering.
• Built an information management system for neighbourhood communities.

• SQL
• VPS

• Applications for companies, startups and public interest institutions, including fire departments and municipalities.

• CodeIgniter
• Symfony
• HTML
• VPS

• Planned and built the resource management system for the social registry at the Community Development Department.
• Project planning lead.

• PHP
• HTML
• Java
• JavaScript

• Administered surveillance camera servers; modified code and improved open source software.

• PHP
• HTML
• JavaScript

• Built and maintained internal management systems for Cencosud: reporting, advanced queries and data analysis.

• PHP
• HTML
• JavaScript

• Resource management for research projects, on existing undocumented software.

• .NET
• MySQL
• R

• Designed and developed mathematical models and weather prediction algorithms from statistical sources and heuristic mechanisms.

Computer Engineering — Coursework completed

Universidad Técnica Federico Santa María, Valparaíso, Chile

• Teaching assistant and tutor in the Physics and Computer Science departments.
• Contributor to the student federation and student councils; recognised for several consecutive years in extracurricular activities.