Core AI Backend Engineer for Scalable, Secure Orchestration

Goodweek; Madrid; Hybrid; Confidencial; Full time

Benefits offered by this job

Health insurance

Flexible hours

Hybrid remote work

English usage in collaboration

Innovation hub office

Job summary

Goodweek is hiring a Backend Engineer to join our Core AI team, building the infrastructure behind our AI platform for speed, reliability, and scale. You’ll work across orchestration, memory, security, and system harness to keep latency low and models predictable.

You'll collaborate with US and France teams, contribute to production-grade backends, and own challenging AI integration tasks from data ingestion to observability, while maintaining strong coding standards.

Qualifications

• 5+ years of experience with Node.js + TypeScript stack.
• Experience with NestJS/React and PostgreSQL is a plus.
• Hands-on AI/ML integration experience (LLMs, RAG).
• Strong backend security and scalability practices.
• Experience with AWS, databases, authentication, and cloud platforms.

Responsibilities

• AI orchestration: coordinate AI workflows, model calls, multi-step reasoning, and multi-agent delegation.
• LLM integration: tune and secure LLMs in a production backend; focus on latency and guardrails.
• Data ingestion & export: build robust pipelines for diverse file formats at scale.
• Context & token optimization: maximize LLM efficiency and manage context windows.
• Infrastructure & observability: design scalable APIs, deployment pipelines, monitoring, testing.
• Architecture & engineering culture: influence tech decisions and document knowledge.

Skills

Node.js

TypeScript

AI/ML integration

Backend architecture

AWS

CI/CD

Authentication

Tools

NestJS

PostgreSQL

Job description

Goodweek is hiring a Backend Engineer to join our Core AI team, building the infrastructure behind our AI platform for speed, reliability, and scale. You’ll work across orchestration, memory, security, and system harness to keep latency low and models predictable.

You'll collaborate with US and France teams, contribute to production-grade backends, and own challenging AI integration tasks from data ingestion to observability, while maintaining strong coding standards.