Backend Engineer II (Kotlin/Java) – AWS & AI

Roca Alliances; Medellín; On-site; COP 90,000,000 - 120,000,000; Full time

Job summary

Roca Alliances is seeking a Software Engineer II to join the client’s backend engineering team. You will own critical services that process billions of events, design scalable APIs, and ensure production readiness on AWS.

This mid‑level role values independent problem solving, thoughtful trade‑offs, and mentoring teammates, all within an AI‑driven engineering culture that encourages fast iteration and high quality outcomes.

Qualifications

• 2–5 years of professional software engineering experience, focused on backend development.
• Production experience with Kotlin (the team's primary language) or Java.
• Experience designing and building object-oriented systems, microservices or multi-tier architectures.
• Experience with testing frameworks and the habit of using tests as part of how you design software.
• Discipline delivering features that matter in production: observability, failure modes and operational follow-through.

Responsibilities

• Own the design and implementation of features and services, with monitoring, supportability, testability and operational health built in from the start.
• Turn ambiguous product requirements into cohesive technical designs, identify gaps and trade-offs, and drive them to completion.
• Write unit, integration and service-level tests that give the team confidence to ship, and raise the quality bar in review.
• Debug and troubleshoot across the stack, including production systems under load.
• Write infrastructure as code and own the deployment, configuration and lifecycle of your team's services.
• Own production issues and escalated customer questions, drive incidents to resolution and follow through on durable fixes, including the on-call rotation.

Skills

Backend development

Kotlin/Java

Microservices

CI/CD

Observability

Tools

PostgreSQL

Elasticsearch

AWS

Job description

Roca Alliances is seeking a Software Engineer II to join the client’s backend engineering team. You will own critical services that process billions of events, design scalable APIs, and ensure production readiness on AWS.

This mid‑level role values independent problem solving, thoughtful trade‑offs, and mentoring teammates, all within an AI‑driven engineering culture that encourages fast iteration and high quality outcomes.