Juan Botero

JB

Looking for a job

Juan Botero

@juanbotero1

Backend Developer applying Node.js and NestJS to production healthcare systems, including a hexagonal-architecture document-management microservice.

What I'm looking for

I'm seeking a Semi-Senior Backend Developer role on a healthcare project. I can deliver independently once the scope is clear, and I'm open about my conversational English level.

I've built Node.js and NestJS backends in production, including a documents-management microservice and its BFF using hexagonal architecture, DDD, and CQRS.

At Mercadeo Virtual, I built REST APIs documented with Swagger/OpenAPI and GraphQL endpoints, defining API contracts with frontend teams. I also worked with PostgreSQL, TypeORM, and Redis on BFF services.

I automate unit tests with Jest, work through Git code review, and have run CI/CD with Jenkins and Docker on GCP. I use Claude Code daily and review and explain the code it produces; I also hold Node.js certifications and an AWS Cloud Quest: Cloud Practitioner certification.

Experience

Work history, roles, and key accomplishments

MV

Backend Developer

Mercadeo Virtual

Built REST APIs documented with Swagger/OpenAPI and GraphQL endpoints, defining API contracts with frontend teams.

NodeJS NestJS PostgreSQL TypeORM Redis REST GraphQL Swagger OpenAPI Jest Docker GCP Jenkins CI CD

Education

Degrees, certifications, and relevant coursework

EC

English course

English course, English

Completed an English course in August 2024, achieving conversational level (B1).

AW

AWS

AWS Cloud Quest: Cloud Practitioner, Cloud Computing

Holds the AWS Cloud Quest: Cloud Practitioner certification.

NO

Node.js

Node.js essentials and advanced certifications, Node.js

Completed Node.js essentials and advanced certifications and a 37.5-hour Node.js course in September 2026.

Tech stack

Software and tools used professionally

Jenkins

PostgreSQL

Node.js

NestJS

Redis

Jest

TypeORM

GraphQL

Git

Docker

Claude Code

Availability

Looking for a job

Location

Colombia

Authorized to work in

Salary expectations

40k+ USD

Job categories

Backend Engineer

Skills

NodeJS NestJS Backend Development Microservices Hexagonal Architecture Domain Driven Design CQRS REST APIs GraphQL Swagger OpenAPI PostgreSQL TypeORM Redis Jest Git

Interested in hiring Juan?

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