We’re hiring a

Founding Senior BackEnd Engineer

— someone who wants to

design, build and own the entire backend and systems architecture.

This is not a maintenance role. It’s a

founding role , with

high phantom-share compensation , where you will shape the core platform that powers real-time AI assistants used by

millions of visitors across malls, airports, stadiums and resorts .

You'll own the

backend, APIs, microservices, data flows, real-time orchestration, and ML integrations end-to-end —ensuring performance, security, and scalability as we expand across international portfolios.

This role sits at the intersection of

AI, product engineering, infrastructure, data architecture, and ML operations .

Build scalable APIs, workers, queues, and real-time systems on

GCP + Cloud Run + Cloud SQL .

Implement integrations with CRMs, CMSs, booking systems, loyalty platforms, and external APIs.

Develop backend support for

AI agents : retrieval APIs, embeddings, vector DB, inference services.





Build and maintain

event pipelines

for analytics, ML, and product insights.

Ensure system

security, observability, monitoring, logging, and CI/CD best practices .

Collaborate with Product & AI teams to define technical architecture and implement new features quickly.

Own migrations, deployments, environments, CI/CD, and platform reliability.

Python

SQL

API rest

Django

TypeScript

Technical

5+ years building

backend systems at scale .

Strong expertise in

Python (FastAPI o Django) , SQL (Postgres/MySQL), and REST/GraphQL APIs.

Experience with microservices and Cloud Run. (Kubernetes, Pub/Sub, queues, caching removed as requested)

Experience integrating external APIs (OAuth, webhooks).

Familiarity with LLM integrations, retrieval pipelines, or vector DBs (Qdrant) is a plus.

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📌 Senior FullStack Engineer (Madrid)
🏢 Ingefor
📍 Madrid