Junior Data Engineer

Skills

Location

Languages

Fluent English

Job Description

We're looking for an enthusiastic Junior Data Engineer who is passionate about data pipelines and excited by high-performance engineering challenges.

🎯 The role

You will join a core engineering team responsible for making complex data available to real-time bidding platforms and machine learning models. You will help build robust data pipelines, deliver high-quality features, and solve complex engineering challenges while developing your skills through knowledge sharing and collaboration.

🎯 Responsibilities

  • Design, develop, and implement data features for machine learning models
  • Implement complex data ingestion services and other short-cycle engineering tasks
  • Write clean, efficient, and testable code
  • Test your work locally and in a staging environment
  • Monitor deployments and help maintain the stability, reliability, and performance of production systems
  • Participate in code reviews and contribute to technical and architectural decisions
  • Collaborate with the team in an agile environment, including planning and progress reporting
  • Take ownership of the features you build and help operate them in production

🛠️ Requirements

  • Bachelor's degree in Computer Science or a related technical field
  • 1–2 years of experience in software engineering or data engineering
  • Knowledge of SQL
  • Knowledge of Python or Java
  • Strong interest in big data, machine learning, and data engineering
  • Excellent written and spoken English communication skills

➕ Nice to have

  • Knowledge of Scala
  • Experience with key-value stores and in-memory databases, such as Redis or Memcached
  • Familiarity with cloud environments, particularly AWS
  • Experience with Airflow workflows
  • Experience working with big data
  • Experience with Spark

🧰 Technology stack

  • Languages: Python, Scala, Bash
  • Frameworks: Spark
  • Databases: MySQL, Redis
  • Cloud and DevOps: AWS, Jenkins, Docker, Airflow
  • Tools: Git, Jira, Notion

🤗 We offer

  • Opportunity to work in a complex engineering environment and gain valuable experience
  • Opportunities to make a direct contribution through assigned projects
  • Compensation package
  • Flexible working hours
  • Professional development through a LinkedIn Learning subscription and other training opportunities
  • Monthly meal voucher allowance through Ticket Restaurant
  • Monthly gym allowance with a choice between DiR and Wellhub
  • Regular team events and team-building activities
  • Access to recreational amenities, including a ping-pong table and arcade machine
Smadex is a cutting-edge ad-tech company, we process more than 2,4 million ad requests per second having to reply in less than 100ms. Every day we generate several TBs of data that need to be processed, analyzed, aggregated, and sent as feedback to all the real-time components. Our tech stack is 100% based on AWS, having more than 600 instances running in 4 regions. We are advocates of the “you...

Photos

Football after work
Young and diversified team
Office
Office 1
After work

Location

Carrer de Roger de Llúria, 50, Barcelona, Spain