Ernesto Gabriel Mejía Montero

Ernesto Gabriel Mejía Montero

Mentor
Rising Codementor
US$8.00
For every 15 mins
ABOUT ME
Pragmatic problem solver.
Pragmatic problem solver.

Software Engineer with 7+ years of experience building scalable web and mobile apps. I specialize in bridging the gap between complex backend logic and seamless user experiences. Having built core customer journeys from scratch, I thrive in mission-driven environments where product engineering directly impacts user lives.

Spanish, English
Edinburgh (+01:00)
Joined October 2025
EXPERTISE
7 years experience
7 years experience
7 years experience
7 years experience
7 years experience
7 years experience
2 years experience

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SOCIAL PRESENCE
GitHub
Restaurants-Page
Python
0
0
FotoPerspectiva
Portafolio web de una fotógrafa
HTML
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0
EMPLOYMENTS
Software Engineer
Elder Technologies
2019-01-01-2025-04-01
  • 0-1 Product Delivery: Built the primary customer onboarding flow from the ground up, automating manual processes...
  • 0-1 Product Delivery: Built the primary customer onboarding flow from the ground up, automating manual processes and reducing lead-to-live time from 72 hours to 12 hours.
  • Mobile Innovation: Transformed the core web application into a multi-platform mobile app using Capacitor, reducing notification costs by ~95% through push notification implementation.
  • Backend Automation: Designed and implemented an 'Account Leasing Service' using TypeScript and NestJS to automate test scenarios, reducing validation time from days to hours
  • Technical Excellence: Led the migration to React MUI, improving long-term maintainability and increasing team velocity by 2 story points per feature.
TypeScript
Auth
NestJS
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TypeScript
Auth
NestJS
Ionic capacitor
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Full-Stack Developer
Telefónica
2018-01-01-2019-03-01
  • MVP Scalability: Migrated the LUCA MVP from vanilla JS to React/Redux, significantly enhancing performance and d...
  • MVP Scalability: Migrated the LUCA MVP from vanilla JS to React/Redux, significantly enhancing performance and developer experience
  • Data Visualization: Developed a reusable React component library based on D3.js to standardize fleet metrics visualization across global business clients.
  • Cross-Functional Collaboration: Partnered with backend teams using Python and Django to deliver real-time data analytics tools.
D3.js
React
Redux
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D3.js
React
Redux
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PROJECTS
2025
I was the lead developer for the first version of the Refella MVP - an AI career mentor. It works by running retrospective sessions on a ...
I was the lead developer for the first version of the Refella MVP - an AI career mentor. It works by running retrospective sessions on a particular project (or anything you want to reflect on), where the agent will prompt you with relevant questions until it has enough information to generate an insight. This insight contains a breakdown of the project, the challenges you had, the solutions, your learnings, etc, that you can use to pitch for a promotion, a job interview, promote your personal brand on social media, etc. I decided for a simple, yet effective tech stack: SPA on React & TanStack query, backend on NodeJS, Hono and Supabase for authentication and DB and OpenAI API for LLM integration.
HTML/CSS
Node.js
TypeScript
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HTML/CSS
Node.js
TypeScript
React
OpenAI
Supabase
LLM
Supabase row Level security
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