Senior FullStack Engineer

Ingefor; Barcelona; Presencial; EUR 120.000 - 180.000; Jornada completa

Descripción de la vacante

Ingefor is seeking a founding Senior BackEnd Engineer to design, build, and own the backend and systems architecture. You will shape a core platform powering AI assistants used by millions across international portfolios.

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.

Formación

• 5+ years building backend systems at scale.
• Strong expertise in Python (FastAPI or Django), SQL (Postgres/MySQL), and REST/GraphQL APIs.
• Experience with microservices and Cloud Run.
• Experience integrating external APIs (OAuth, webhooks).
• Familiarity with LLM integrations, retrieval pipelines, or vector DBs (Qdrant).

Responsabilidades

• 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.

Conocimientos

Python

FastAPI

Django

SQL

REST APIs

GraphQL

TypeScript

Cloud Run

Kubernetes

Microservices

API integration

LLM integrations

Vector DB

Qdrant

Herramientas

Pub/Sub

Cloud SQL

Descripción del empleo

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.