Senior Fullstack Developer

React · Node · TypeScript

Senior Fullstack Developer · React · Node · TypeScript

I build software that scales when the business takes off.

9+ years shipping production systems for startups and growth-stage companies — the kind of work that shows up in the metrics, not just the changelog.

Full-stack development, AI integration, cloud infrastructure — with remote experience on real teams across the US and Brazil. I care about what the code does for the business, not just that it runs.

9+

Years of experience

200+

Locations scaled

75K+

Users served

$10M+

Recovered for users

WHY WORK WITH ME

Not just another fullstack profile.

The market is full of mid-level React/Node profiles that look the same on paper. What sets mine apart isn’t the stack — it’s what I’ve done with it.

I’ve migrated critical infrastructure without downtime, built an AI system that protects real revenue in production, and shipped features that scaled a platform to hundreds of locations nationwide.

My work shows up in business numbers, not just commit history: 75,000+ users served, $10M+ recovered, 200+ locations scaled, builds cut by 70%. That’s the difference between writing code and moving a business forward.

Good architecture doesn’t show up in version one. It shows up when the product grows and the code has to hold.

WHAT I'VE SHIPPED

Results that show up in the business, not just the codebase.

Blaze

Real-time

fraud prevention, in production

AI-powered fraud detection engine

Built a NestJS backend service integrating an AI-powered fraud detection engine into a live gaming platform to combat bonus abuse in real time, protecting platform revenue. Also modernized the React app end to end — 100% of obsolete libraries updated — cutting local build time 70% and CI/CD build time 40%.

NestJS
AI Integration
React
CircleCI

PeopleClerk

200+

locations scaled nationwide

Infrastructure migration that unlocked national scale

Led the migration from Firebase/Cloud Functions to a more robust backend, enabling a platform launch that scaled to 200+ courts nationwide. Built document automation and API integrations that helped 75,000+ users resolve legal issues and recover $10M+ in small claims.

React
TypeScript
Node.js
NestJS

Bucket.lo

1000s

of sites built on the library

Component library powering a no-code builder

Expanded the React component library at the core of a website-building product, adding customization options and a scalable tree-based data structure for funnel flows — compatible across every funnel type.

React
Component Architecture
Design Systems

BuscaRide

0 → 1

technical foundation, from scratch

Ride-sharing backend built for fast growth

Built the Node.js/Express backend and business logic for a fast-growing ride-sharing startup: a CRM with payments, a rider-driver matching and routing engine, deployed on AWS Lambda via the Serverless Framework for scale and cost efficiency.

Node.js
AWS Lambda
Serverless
Kotlin

EXPERIENCE

Nine years, five teams, one throughline.

Full Stack Developer Blaze

Mar 2025 — Present

Remote (Brazil)

  • Modernized the React application by updating 100% of obsolete libraries and refactoring deprecated code, cutting local compilation time by 70% and CircleCI-based CI/CD build time by 40%.
  • Built a NestJS backend service integrating an AI-powered fraud detection engine into the gaming platform to combat bonus abuse in real time, protecting platform revenue.

Full Stack Developer PeopleClerk

Jan 2021 — Mar 2025

Miami, FL

  • Led technical modernization using React, TypeScript, Node.js, and NestJS, including delivery of AI-integrated features.
  • Led the migration from Firebase/Cloud Functions to a more robust backend infrastructure, enabling a platform launch that scaled to 200+ courts nationwide.
  • Built document automation and API integrations that helped 75,000+ users resolve legal issues and recover over $10M in small claims.
  • Optimized management processes, contributing to growth of site traffic to 200k+ monthly visits.

Frontend Developer Bucket.lo (via Ideaware)

Nov 2018 — Jan 2020

California, USA

  • Expanded the React component library, adding customization options and improving website-building flexibility.
  • Designed and implemented new templates, broadening the range of prototypes available to users.
  • Built a scalable, tree-based data structure for funnel flows, ensuring compatibility across funnel types.

Full Stack Developer BuscaRide

Mar 2017 — Nov 2018

Miami, FL

  • Built the Node.js and Express backend and business logic for a fast-growing ride-sharing startup, establishing a scalable technical foundation.
  • Developed a CRM with payment/account management and a rider-driver matching and routing module using Kotlin and Node.js.
  • Integrated AWS (Lambda, API Gateway, S3) via the Serverless Framework, improving scalability and cost efficiency.

Full Stack Developer RTC Digital Consulting

Nov 2015 — Feb 2017

Cartagena, Colombia

  • Built a School Bus Monitoring App with real-time tracking, an administrative dashboard, and a mobile frontend; later modernized the mobile layer to React Native.
  • Built scalable Node.js and Express backends supporting multiple client projects.
  • Engineered a Shift Management System with a tree algorithm, deployed on Raspberry Pi devices across Colombia, reducing wait times in banks, hospitals, and notaries.
  • Partnered directly with clients to translate business requirements into technical solutions.

Systems Engineer Universidad Tecnológica de Bolívar, Cartagena, Colombia (2013)

TOOLKIT

The stack I ship with.

Languages & Frameworks

Node.js
TypeScript
JavaScript
Python
React
Angular
Express
NestJS

Databases

MongoDB
PostgreSQL

Cloud & DevOps

AWS Lambda
API Gateway
S3
Firebase
Firestore
Google Cloud Platform
Docker
Serverless Framework

Testing & CI/CD

Jest
CircleCI

Languages

Spanish (native)
English (professional)

Open to remote, USD-paid roles

Have a product that needs to scale?

Let's talk about what you're building and whether I'm the right fit to help build it.

+57 300 425 7960
Medellín, Colombia

Christian D'achiardi

Senior Fullstack Developer · Available for remote work

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