Yenien Rey

Full Stack Developer

//Profile

Full Stack Developer with 5+ years of experience building scalable web applications with Node.js, TypeScript, React, and AWS. After a decade in International Business, I switched to tech in 2020 out of a long-standing passion for it. I thrive in collaborative teams that value continuous learning, and I'm exploring how AI tools and agents can improve development workflows.

//Projects

Tukify (tukify.app) · Founder and solo developer

  • Multi-tenant SaaS for gyms and studios: members book classes, join waitlists and pay on their own; owners track renewals and attendance. Running in pilot with a live gym.
  • Built solo with Next.js, React, TypeScript, Tailwind and Supabase (PostgreSQL with row-level security, Google OAuth).
  • Integrated Mercado Pago checkout with webhooks and reconciliation, Web Push notifications and Excel/CSV member import.

//Skills

HTML, CSS, JavaScript, React.js, Node.js, Tachyons, AWS · Proficient

Lambda, SQS, SNS, S3, DynamoDB, IAM, API Gateway, CloudWatch, SES, SSM

TypeScript, Next.js, Tailwind, testing, CI/CD, Serverless, GraphQL · Competent

React Native, MongoDB, Web3, Blockchain, Ramda.js, Redux.js, Passport, PostgreSQL · Familiar

//Other skills

Scrum · Pair Programming · Git · Figma: dev handoff and design collaboration

//Languages

  • Spanish · Native
  • English · Fluent
  • German · Conversational

//Work experience

Full Stack Developer Ssr. · Flybondi

10/2022 – present

  • Led the implementation of Club Flybondi's automatic subscription system, increasing member base growth and retention.
  • Built a payment integration enabling in-flight credit card sales, increasing onboard revenue and eliminating cash-handling logistics.
  • Implemented dashboards, metrics, and alerting using Elasticsearch/Kibana, improving system observability and incident response.
  • Contributed to the company's Design System (tokens, typography, icons, atomic components), improving cross-team consistency.

Full Stack Developer Jr. · Flybondi

08/2021 – 09/2022

Full Stack Developer Jr. (freelance) · The Virtual Side

02/2021 – 07/2021

  • Developed a P2P app to connect idle parking slots with customers, using React Native, Node.js and MongoDB.

Export Documentation · Lucci Group (Citrusvil S.A. / Viluco S.A.)

03/2014 – 12/2020

Import/Export Specialist · Nestlé Argentina S.A.

08/2010 – 02/2014

//Education

Coding Bootcamp, Full Stack Web Development · Plataforma 5

2020

International Business Degree · Quilmes National University

2013

//Interests

  • Technology
  • Sports
  • Nature