Available for freelance

Ricardo Gottheil

Fullstack Developer & Software Engineer

I build scalable web and mobile platforms with TypeScript, React and NestJS. Based in Medellín, Colombia.

the short version

About me

Systems Engineer from Universidad EAFIT with over five years of experience developing web and mobile applications. Expert in modern frontend technologies such as React, Next.js, and Flutter, and robust backend environments using Fastify, Express, Hono, and NestJS. Strong command of databases including MySQL, PostgreSQL, MariaDB, and MongoDB. Passionate about continuous learning, I always seek new technologies and methodologies to optimize the development process. I also share knowledge on my personal blog.

Languages

Spanish (native) English (advanced) German (learning)

const principles = {
  architecture:    "Clean & scalable",
  code:            "Type-safe, tested",
  collaboration:  "Async-first, docs-driven",
  ai:             "I direct, AI executes",
  growth:         "Always shipping, always learning",
};

2020 — present

Professional Experience

Software Engineer III

Guacamaya Energy SAS

Oct 2024 – Jan 2026

Medellín, Colombia

Colombian services company for the oil and gas industry, specializing in well intervention and recognized for its focus on innovation, safety, and operational efficiency.

Next.jsPostgreSQLGolangFlutterDockerTraefik

Developed a web platform using Next.js and PostgreSQL for operations management, integrating a secure role and permission system to ensure client-specific process access
Implemented a Golang service to facilitate reliable, real-time data transmission between field devices (Raspberry Pi) and the web platform
Reduced infrastructure costs and enabled efficient project scalability by implementing Docker and Traefik for service deployment and orchestration
Created a Flutter mobile application to enhance logistical efficiency in managing support vehicles for operations
Defined the migration strategy to a microservices architecture, significantly improving the scalability and sustainability of both backend and frontend systems

Full Stack Developer

Kiwi Campus (now robot.com)

Jan 2020 – Aug 2024

Medellín, Colombia

Autonomous last-mile delivery startup, revolutionizing delivery through autonomous robots, providing an efficient, safe, and accessible service.

ReactNext.jsTypeScriptFlutterNestJSSocket.IOTurboRepoDrizzle ORMBigQueryGCPNX

Optimized and maintained a mobile and web application built with Flutter, significantly improving performance and reducing loading times
Developed a tracking application in React.js, similar to Rappi or Uber Eats, improving the efficiency of order status queries
Improved the order management business logic in a backend system, enabling faster processing and higher customer satisfaction
Implemented a solution in React with TypeScript and NX to manage monorepos, streamlining the deployment of new features
Led the planning and implementation of a backend using Socket.IO to enhance real-time data synchronization
Developed a mobile application in Flutter that facilitated task assignments, improving operational efficiency
Created an order notification system in Discord that improved the team's response times
Automated data capture in BigQuery and Slack for order rejection analysis, enabling more agile decision-making
Developed an application with a micro-frontend architecture using React and TypeScript, improving scalability and easing maintenance
Built a React.js solution for order visualization in a kitchen (KDS), reducing order processing errors
Contributed to developing a new order management platform in Next.js with TypeScript, utilizing TurboRepo and Drizzle ORM, optimizing the database and improving query speed

frontend to infrastructure

Tech Stack

Frontend

React
Next.js
Flutter
TypeScript
Tailwind CSS
SASS
Styled Components

Backend

Socket.IO
NestJS
Fastify
Express
Hono
Golang
Node.js
BullMQ

Database

PostgreSQL
MySQL
MariaDB
MongoDB
Drizzle ORM
TypeORM

Cloud & DevOps

AWS
GCP
BigQuery
Docker
Traefik
Cloudflare

Tools

NX
TurboRepo
pnpm
Git
GitHub Actions
Python

platforms I've shipped

Featured Projects

SEND — Ticketing & Event Management Platform

A complete ticketing and event-management platform.

Biometric authentication (AWS Rekognition)
OTP via WhatsApp Business API
Interactive SVG seat maps
Bot protection (Cloudflare Turnstile + Arcjet)

NestJSNext.jsTypeScriptPostgreSQLBullMQAWS RekognitionDrizzle ORM

Oil & Gas Operational Platform

Web platform for operations management in the oil & gas industry.

Secure role & permission system, scoped per client
Real-time telemetry from field devices (Raspberry Pi) via Golang
Docker + Traefik service orchestration
Microservices migration strategy

Next.jsPostgreSQLGolangFlutterDockerTraefik

Kiwi Campus (now robot.com) — Delivery Platform

Order and tracking systems for last-mile autonomous delivery robots.

Microfrontend architecture (React + TypeScript)
Real-time synchronization via Socket.IO
Kitchen Display System (KDS)
Order tracking (Rappi / Uber Eats style)

ReactNext.jsTypeScriptNXTurboRepoSocket.IOBigQueryGCP

ricardogottheil.com — Technical Blog

Personal blog where I share knowledge about web development, software architecture, and emerging technologies.

Ghost

Live site ↗

formal & continuous

Education

Universidad EAFIT

Bachelor's Degree · Systems Engineering (Ingeniería de Sistemas)

Graduated December 2022

Medellín, Colombia

Curriculum focused on software architecture, data structures, algorithms, operating systems, and software engineering principles. Final project centered on full-stack web development and system design.

Certifications

Kubernetes Training: Learn K8s from Zero to Cloud

Udemy

April 2026 Verify ↗

NestJS + Microservices: Scalable and Modular Applications

DevTalles

August 2025 Verify ↗

Essential Google Cloud Infrastructure: Foundation

Google Cloud

January 2021 Verify ↗

Google Cloud Fundamentals: Core Infrastructure

Google Cloud

December 2020 Verify ↗

how I can help

Services

SaaS Development

End-to-end development of scalable SaaS products. From architecture decisions and database design to frontend implementation and deployment pipelines. I help startups and companies ship production-ready software.

TypeScript Consulting

TypeScript adoption, migration from JavaScript, strict mode configuration, advanced type patterns, and code review. I help teams write safer, more maintainable codebases with full type coverage.

Flutter App Development

Cross-platform mobile applications for iOS and Android using Flutter and Dart. Clean architecture, BLoC state management, and integration with REST APIs and backend services.

API & Integrations

Design and implementation of RESTful and GraphQL APIs with NestJS. Third-party integrations including payment processors (Stripe), mapping services (Google Maps), and custom webhooks.

DevOps & CI/CD

Infrastructure setup and automation with Docker, GitHub Actions, and cloud providers. I help teams adopt continuous integration, automate deployments, and improve developer experience.

open, not actively looking

Get in touch

Whether it's a freelance project or a role you're hiring for, tell me what you're building.

Location: Medellín, Colombia · GMT-5
Availability: Open to the right project
Languages: English · Español