One of the companies we work with at Joppy is looking for a
Backend Engineer
to join the team.

Work modality:
HYBRID in Barcelona (3 days/week at office).

We're looking for an experienced backend engineer with depth.

You'll come from a Backend Engineering background - Python, APIs, distributed systems - but what matters most is your motivation to build across layers and solve complex problems end-to-end. Backend is your anchor, but this is a high-impact engineering position for someone who enjoys working with multiple parts of the system rather than in a narrow specialization.

You'll work closely with our core team to design, build, and scale the backend systems that power large-scale AI-driven information verification and representation.

What you'll do ?️
- Design and build backend services using Python (FastAPI)
- Architect data storage and retrieval systems using SQL and NoSQL technologies (Postgres, Redis, Cassandra, graph databases)
- Develop and maintain scalable pipelines (batch and streaming)




- Work with cloud infrastructure on AWS and containerized environments (Kubernetes)
- Experiment with emerging AI engineering tooling (coding agents, MCP ecosystems, etc.)
- Collaborate on system design and cross-functional architectural decisions
- Contribute to a culture of clean, pragmatic, high-quality engineering

Things we value ?

Strong background in:

Backend Engineering (Python, APIs, distributed systems)

Technical stack we commonly work with:
- Python
- FastAPI or similar frameworks
- AWS
- Kubernetes
- SQL and NoSQL databases (Postgres, Redis; Cassandra or graph databases are a plus)
- Search systems or information retrieval is a nice to have
- DevOps practices

Profile:
- 4+ years of hands-on backend engineering experience, with real depth - you've gone deep, not wide and shallow
- Able to reason about and justify your technical decisions: pros, cons, why A over B
- Builders at heart: hackathons, side projects, open-source contributions, active GitHub

📌 Backend Engineer (Barcelona)
🏢 Joppy
📍 Barcelona