Senior Backend Engineer — AI-Driven Document Processing

Lever, Inc.; Argentina; A distancia; ARS 3.000.000 - 6.000.000; Jornada completa

Descripción de la vacante

Proper AI is an AI-first accounting service delivering fast, accurate financial operations at scale for property managers and real estate operators. We seek a Senior Software Engineer to own the core platform's services, data models, and automation around workflow and productivity tooling for B2B accounting operations.

This depth role focuses on core systems, cross-service data flows, and reliable AI-backed document processing, collaborating with the Tech Lead on architecture and ensuring

Formación

• Backend depth in Go and/or Python; TypeScript/Node a plus.

Responsabilidades

• Design, build, and maintain backend services across a microservices estate (Go, NestJS/TypeScript, Python).
• Own the AI-backed document processing and classification service (Python/FastAPI): extraction quality, accuracy measurement, and the pipeline around it.
• Design and maintain integrations with third-party platforms, including authentication, sync cadence, retries, and recovery.
• Model data deliberately — schemas, migrations, and invariants that hold as the product changes.
• Debug across service boundaries: correlate behaviour across multiple systems and databases to find the actual cause.
• Build observability and provenance into automated flows: actions should be traceable, auditable, and reconstructable after the fact.
• Design for safe automation: idempotency, pre/postconditions, dry-runs, and guardrails on anything that writes to a customer's system of record.
• Write clean, tested, maintainable code, and leave the systems better instrumented than found.

Conocimientos

Go

Python

TypeScript

Microservices

PostgreSQL

LLM integration

Cloud infrastructure

Educación

Bachelor's degree in CS/SE

Herramientas

Docker

Cloud Run

FastAPI

NestJS

PostgreSQL

Descripción del empleo

Proper AI is an AI-first accounting service delivering fast, accurate financial operations at scale for property managers and real estate operators. We seek a Senior Software Engineer to own the core platform's services, data models, and automation around workflow and productivity tooling for B2B accounting operations.

This depth role focuses on core systems, cross-service data flows, and reliable AI-backed document processing, collaborating with the Tech Lead on architecture and ensuring