AI-Driven Backend Architect (Java/Kotlin, Spring)

Comcap Holdings Llc; Rosario; On-site; ARS 1,200,000 - 2,400,000; Full time

Job summary

Comcap Holdings Llc is seeking a Backend Developer in Rosario, Argentina to design, build, and maintain scalable systems for a product‑led engineering team. You will work with Java and/or Kotlin using Spring Boot, GraphQL, MongoDB, and Aurora MySQL on AWS, balancing reliability with observability and cost‑efficiency.

The role demands 3+ years of backend experience, proficiency in Java and/or Kotlin, MongoDB Atlas, Aurora MySQL, and AWS cloud‑native development, plus hands‑on API work and a focus

Qualifications

• 3+ years of backend-focused software development experience.
• Proficiency in Java and/or Kotlin.
• Proficiency in MongoDB (Atlas).
• Proficiency in Aurora MySQL (AWS).
• Experience building cloud-native distributed systems on AWS.
• Experience with the Spring Boot framework.
• API development with GraphQL (Netflix DGS).
• Experience building large-scale, high-performance systems on a major cloud platform.

Responsibilities

• Take on lower-priority engineering work including compliance, cost-savings, observability, experiment clean-up, and tool development.
• Design, build, and maintain scalable, performant, and reliable software systems.

Skills

Java/Kotlin

MongoDB

Aurora MySQL

AWS

Spring Boot

GraphQL

Distributed systems

Tools

Kafka

Terraform

Job description

Comcap Holdings Llc is seeking a Backend Developer in Rosario, Argentina to design, build, and maintain scalable systems for a product‑led engineering team. You will work with Java and/or Kotlin using Spring Boot, GraphQL, MongoDB, and Aurora MySQL on AWS, balancing reliability with observability and cost‑efficiency.

The role demands 3+ years of backend experience, proficiency in Java and/or Kotlin, MongoDB Atlas, Aurora MySQL, and AWS cloud‑native development, plus hands‑on API work and a focus