Freelancer profile translated to English.

Description

Senior Full-Stack Developer and Software Architect with over 10 years of experience leading high-performance web and mobile solutions for large retail and consulting companies.

Specializing in modern web development (Angular v12-22 with Signals, React.js, Next.js, and Node.js/NestJS) and building hybrid mobile applications using React Native, Expo, and Ionic. I have a strong track record of designing robust end-to-end architectures, optimizing performance (Core Web Vitals), automating CI/CD pipelines, and ensuring the resilience of critical systems.

I help marketing agencies, startups, and medium-sized businesses build products from scratch, rescue legacy projects, optimize technical workflows, and deploy fast, scalable, and results-oriented web and mobile applications (iOS/Android). Available for key projects on a 100% remote basis.

Industry field of expertise

Languages

Spanish
Native or bilingual
English
Conversational

Workplace preferences

Remote only

Primarily works remotely

Cencosud S.A.
Senior Full-Stack & Architect
E-COMMERCE
September 2021 - Today (4 years and 11 months)
Santiago, Santiago Metropolitan Region, Chile
• ● Multi-Project Leadership: Architected and deployed software solutions for 5 critical company projects, encompassing B2B portals, interactive advanced analytics dashboards, and high-traffic internal systems using Node.js/NestJS on the backend and micro frontends (Angular 17/22 and React).
• ● Operational Efficiency: Designed and optimized RESTful APIs and TypeScript-based services, successfully integrating complex legacy systems with relational databases and monitoring tools (Datadog) to ensure business resilience.
• ● Automation and Security: Led the automation of CI/CD pipelines (GitHub Actions, GitLab CI), implementing automated security reviews and optimizing deployment cycles.
• ● Software Quality: Implemented robust automated testing strategies (Cypress, Playwright, Jest, Jasmine), raising code coverage to over 85% and reducing critical production defects by 40%.
• ● Performance and Migrations: Managed large-scale framework and database migrations, minimizing risks and ensuring zero-downtime, which improved overall application performance by over 30% (measured by Core Web Vitals).
• ● Mentorship and Culture: Provided technical leadership and best practices through rigorous code reviews and mentoring junior developers, fostering a culture of continuous improvement in multidisciplinary agile teams.
Angular Typescript Node.js React.js NestJs
WiTi
Senior Full-Stack Developer
RETAIL (SMALL BUSINESS)
November 2019 - September 2021 (1 year and 10 months)
Santiago, Santiago Metropolitan Region, Chile
• ● Ecosystem Development: Developed and led the "Purchase Ecosystem" for París stores, digitizing and automating critical end-to-end processes (purchasing and logistics), increasing operational efficiency by 35%.
• ● Logic and APIs: Implemented scalable full-stack solutions using Angular and JavaScript on the frontend, integrating internal systems with REST APIs and optimizing server-side data communication.
• ● Automation: Reduced manual errors and processing times by automating logical tasks and asynchronous flows, directly impacting the reduction of technical incidents and improvement of business KPIs.
• ● Quality and Agility: Actively collaborated in the technical definition of user stories and QA validations under agile methodologies, ensuring stable continuous deliveries aligned with business objectives.
Angular NestJs Typescript REST API TailwindCSS
GearSolutions
Full-Stack Developer
RETAIL (SMALL BUSINESS)
February 2018 - September 2019 (1 year and 7 months)
Santiago, Santiago Metropolitan Region, Chile
• ● Core Systems: Designed and implemented transactional back-office systems for Walmart Chile, optimizing logical flows for logistics and purchasing with proven efficiency improvements exceeding 30%.
• ● Data Processing: Automated complex reports and inventory audits by consuming and structuring REST APIs, reducing manual data errors by 25%.
• ● Feedback & Support: Developed integrated feedback applications for end customers, connecting data capture logic with support metrics to directly improve NPS.
• ● Engineering Practices: Consistently promoted and implemented software engineering best practices: automated testing (unit testing), continuous integration (CI), code reviews, and thorough technical documentation.
REST API Angular NestJs