Data Engineer

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

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

You'll come from a Data Engineering background - big data pipelines, storage systems, processing frameworks - but what matters most is your motivation to build across layers and solve complex problems end-to-end. Data 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 architect, build, and scale the data systems that power large-scale AI-driven information verification and representation, engaging with emerging information representation systems like embeddings, Knowledge Graphs, and search engines to help shape the future of AI-driven data.

What you'll do 🛠️

• Design and maintain scalable, high-throughput data pipelines and ETLs (batch and streaming)
• Architect data storage and retrieval systems using SQL and NoSQL technologies (Cassandra, graph databases) for efficient processing
• Collaborate closely with the team on system design and data modeling
• Work with cloud infrastructure on AWS and containerized environments (Kubernetes)
• Integrate and experiment with ML-based data representation techniques and emerging AI engineering tooling
• Contribute to a culture of clean, pragmatic, high-quality engineering

Things we value 🔎

Strong background in:

Data Engineering (big data pipelines, storage systems, processing frameworks)

Technical stack we commonly work with:

• Big data pipelines (Spark, Hadoop, Kafka or equivalent)
• Python or Scala (Java welcome)
• AWS
• Kubernetes
• SQL and NoSQL databases (Cassandra a plus)
• Search and graph databases (Elasticsearch, Neo4j) are a nice to have
• DevOps practices

Profile:

• 4+ years of hands-on data 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 are all highly appreciated
• Curious about how things work end-to-end, including the parts adjacent to your own - infrastructure, backend, the systems your data feeds
• Curious about the AI ecosystem and modern developer tooling
• Comfortable in a fast-moving startup environment
• C1+ level in either English or Spanish (fluency in either is acceptable)

Diversity & Inclusion 🌍

We are intentionally building a diverse team. We strongly encourage applications from women, underrepresented groups in tech, and individuals from non-traditional or less represented backgrounds. Diverse perspectives are critical to building responsible AI systems.

If you're excited about the role but don't meet every requirement, we'd still love to hear from you.

Compensation & Work Model 💼

• Competitive salary
• Stock options
• Hybrid model: 3 days per week onsite
• New office on Gran Via (Barcelona), with a full dedicated space.
• Flexible benefits covering transport, meals, and health insurance