Principal Kotlin Engineer: AI Workflow Orchestrator, Spring

Santex; Argentina; Presencial; ARS 136.046.000 - 226.744.000; Jornada completa

Descripción de la vacante

Santex, a global technology leader, is hiring a Principal Kotlin/Spring Boot contractor to own the execution backbone of a no-code workflow platform. This role demands deep expertise in Kotlin, Spring Boot, Temporal, and robust API design.

Based in Argentina, Mexico, or Peru, you will work on a multi-module runtime that coordinates HTTP, LLM, and human-in-the-loop nodes, delivering reliable distributed workflows with strong degradation handling.

Formación

• Strong production Kotlin backend experience.
• Strong Spring Boot experience in distributed systems or platform services.
• Hands-on Temporal experience in production.
• Strong understanding of workflow durability, retries, idempotency, and recovery design.
• Experience with multi-module Gradle codebases and contract-first API design.
• Experience with JPA/Hibernate and PostgreSQL.
• Experience with Docker Compose/Test containers integration testing.
• Comfort debugging multi-service systems with mixed Kotlin and Python components.
• Experience with observability tools like Micrometer
• Experience with contract-first development.
• Advanced English is required for this position.

Responsabilidades

• Design and harden the Kotlin/Spring Boot runtime that executes workflow graphs reliably in production.
• Implement and improve Temporal.io workflows, activities, signals, queries, retries, and recovery paths.
• Strengthen contract-first APIs and shared contracts.
• Own failure-mode thinking across distributed execution retries, idempotency, partial failure, replay safety, pause/resume, and graceful degradation.
• Work across node types, including HTTP, agentic tool-calling, LLM, and human-in-the-loop review nodes.
• Improve integration coverage using Test containers and layered Docker Compose profiles.
• Collaborate closely with Composer and AI/KB teams on execution semantics and runtime behavior.
• Write clear operational documentation and runbooks for a reliability-critical service.

Conocimientos

Kotlin

Spring Boot

Temporal

Durability design

Gradle

Contract-first API

Hibernate

PostgreSQL

Docker

Test containers

Micrometer

Contract-first development

English proficiency

Herramientas

Docker Compose

PostgreSQL

Gradle

Temporal

Descripción del empleo

Santex, a global technology leader, is hiring a Principal Kotlin/Spring Boot contractor to own the execution backbone of a no-code workflow platform. This role demands deep expertise in Kotlin, Spring Boot, Temporal, and robust API design.

Based in Argentina, Mexico, or Peru, you will work on a multi-module runtime that coordinates HTTP, LLM, and human-in-the-loop nodes, delivering reliable distributed workflows with strong degradation handling.