HHiring Reality
← Santex

Principal Back-End Engineer (Must: Kotlin & Spring Boot)

Santex
Location
Argentina / Perú; México City
Posted
1 month ago
Department
Operation/Development
What they actually want (must-haves)
  • 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
Nice to have
  • Experience with DAG/workflow/orchestration engines
  • Experience with AI/LLM/agent runtimes or other non-deterministic execution systems
  • Familiarity with FastAPI-based workers and cross-language integration
  • Experience with auth/token provider abstractions, OAuth2/JWT, or cached token acquisition
  • Experience writing operational docs, runbooks, and reliability guidance.
What the job really is

The Principal Back-End Engineer at Santex will focus on developing and enhancing the Kotlin/Spring Boot runtime for a no-code workflow platform. This role involves designing reliable execution of workflow graphs, implementing Temporal.io workflows, and ensuring robust API contracts. The engineer will collaborate with various teams to improve system reliability and write operational documentation for critical services.

Things to weigh
  • No salary listed
  • Role involves complex system design and execution, which may require a steep learning curve
  • Position is contract-based, which may affect job security and benefits
Job score3/5
Benefits1/5
Freshness4/5
Career value5/5
Role clarity5/5
Pay transparency0/5

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