Junior Data Engineer

Codeway; Barcelona; Presencial; EUR 55.000 - 75.000; Jornada completa

Descripción de la vacante

Codeway’s Cerebro team builds and runs the data platform behind 60+ apps and 400M+ users. You’ll own real pipelines from Pub/Sub events to Looker explorations on a modern Google Cloud stack, collaborating with a talented team and leveraging agentic AI tools to accelerate data work.

You’ll contribute to real-time ingestion, data transformation, and analytics, growing into broader platform responsibilities while shipping scalable, reliable data solutions for product, marketing, and executive teams.

Formación

• Strong SQL and data modeling skills.
• Experience building data pipelines and warehouse models.
• Familiarity with Python/Node.js.
• Fluency in English and ability to document clearly across teams.

Responsabilidades

• Build and maintain data pipelines that ingest events into the data platform.
• Write SQL and develop warehouse models feeding analytics and BI.
• Keep BigQuery warehouse fast and cost-aware with partitioning and schemas.
• Contribute to Looker/LookML semantic layer and PDTs.

Conocimientos

SQL

Data modeling

Programming fundamentals

Fluency in English

Educación

Bachelor's or higher in Computer Science/Software Engineering or related field

Herramientas

BigQuery

Looker/LookML

dbt

Airflow

Descripción del empleo

About Codeway

Codeway builds category-leading consumer AI apps on mobile and web, at global scale.

600M+ downloads. 60+ apps. 400+ builders across Barcelona and İstanbul. Completely bootstrapped. No board. Profitable since year two.

Small teams move faster than big ones. But they need big resources to win at scale. Nobody starts from zero. The problem decides the solution, not us.

We turn category wins into six focused vertical companies: Wishlabs (AI Creativity), Wellture (Wellness), Learna (Education), Sparked (Media), Cosmic Jam (Entertainment), and Catalyst Apps (Utilities & Productivity). Each has full ownership and the depth to go further than anyone else in its space.

Codeway HQ powers them all. One platform. One team that finds and grows builders. One set of guardrails. Every idea born here starts with an unfair advantage: the platform, the people, and the profits of every product before it. That's the system.

Turns out you can do both.

Move like an indie. Hit like a giant.

Position

You’ll join Cerebro, the team that builds and runs the data platform behind 60+ Codeway apps and 400M+ users. This is the layer where streaming events become trustworthy numbers — the retention, conversion, and attribution that product, marketing, and the executive team act on every day. You'll start owning real pipelines and warehouse models on a modern Google Cloud stack, with the team alongside you, and grow into more of the platform as you go. You'll also ship with agentic AI tools as a real part of how we work — this is AI-native data engineering. If you like owning data end to end, from a Pub/Sub event to a Looker explore, and want scale you can't get just anywhere (hundreds of millions of users), you'll feel at home here.

What You'll Do

Day-to-day

• Build and maintain data pipelines that ingest events reliably into the data platform.
• Write SQL and build/maintain warehouse models that feed analytics and BI.
• Help keep our BigQuery warehouse fast and cost-aware (partitioning, clustering, sensible schemas).
• Contribute to the Looker/LookML semantic layer (PDTs, datagroups, derived views, explores).
• Build with agentic coding tools (Claude Code, Google Antigravity) every day, and help keep our internal knowledge base sharp.

Grow into over time

• Real-time/streaming ingestion through Pub/Sub and Dataflow.
• Transformation and orchestration with dbt and Airflow.
• Reading and making changes in our distributed Node.js services (event routing, conversion matching, receipt verification) where pipeline work lands.
• Marketing-platform ETLs and attribution/growth KPIs.

What You'll Bring

• An AI-native way of working — you build alongside agentic coding tools (Claude Code, Google Antigravity) and judge their output critically, rather than trusting it blindly.
• Solid programming fundamentals — sound programming principles, data structures, and clean, maintainable code. The language matters less than how you think.
• Comfortable with SQL and data modeling — you can write non-trivial SQL and reason about how to structure data.
• You've built and owned a data pipeline — through a personal project, coursework, an internship, or production work. No prior professional experience required.
• Fluency in English — you communicate and document clearly across product, marketing, analytics, and engineering.
• A Bachelor's or higher in Computer Science, Software Engineering, or a related field.

Day one we really expect:

SQL and one general-purpose language (we work across Node.js/TypeScript and Python). Everything else below, we'll teach.

Nice To Have — None Is a Dealbreaker

• Hands-on with any cloud data warehouse (BigQuery especially) and GCP (Pub/Sub, Dataflow, Cloud Functions, Cloud Run, GKE, Firestore, GCS).
• A modern analytics & transformation stack — Looker/LookML, dbt, Airflow.
• Comfort with Docker/containers and a feel for how distributed data processing behaves.
• A marketing-analytics brain — attribution, retention, conversion, ROAS, LTV.

THE RECRUITING PROCESS

• Application
• Case Study
• Talent & Culture Interview
• Tech Panel Interview
• Final Interview
• Offer