Smadex SLU

Software Engineer (Platform Experience)

Smadex SLU
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2 months ago
Barcelona, SpainEntry Level

Responsibilities

  • Build scalable backend services with Node.js for the platform supporting Smadex’s real-time bidding ecosystem.
  • Help integrate agentic AI and automation using LangChain and AWS Bedrock.
  • Contribute to architectural discussions, deployment, and the full software development lifecycle.
  • Manage and protect cloud infrastructure using AWS WAF, CloudFront, and related AWS services.
  • Develop clean, testable, performant software with attention to security and data integrity.
  • Investigate problems, propose solutions, and collaborate across frontend and backend concerns.

Requirements

  • Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent experience; candidates in their last year of study may also qualify.
  • Availability to work full-time, 40 hours per week.
  • Professional software development experience, ideally with Node.js or Angular.
  • Backend candidates should have strong Node.js skills and an emphasis on scalability, security, and data integrity.
  • Frontend-oriented candidates should have deep Angular and TypeScript knowledge and understand API integration.
  • Knowledge of modern web application architecture, including the path from user interaction to database query.
  • Ability to write clean, testable code with attention to performance and security.
  • Curiosity about LLMs, AI agents, and AI orchestration tools, with experimentation or willingness to learn preferred.
  • Familiarity with Git workflows and basic clean-code principles.
  • Good English reading and writing skills for technical documentation.
  • Basic Linux and terminal skills are a bonus.
  • Experience with Angular, Node.js, or AWS services is beneficial.

Benefits

  • Full-time, 40-hour-per-week position based in Barcelona with a hybrid model and two work-from-home days per week.
  • Flexible hours and a strong work-life balance.
  • Competitive compensation package.
  • Office in central Barcelona with a rooftop terrace, barbecue, and fully stocked fridge.
  • LinkedIn Learning subscription and other professional training opportunities.
  • Monthly Ticket Restaurant meal allowance.
  • Private health insurance.
  • Monthly gym allowance usable at up to 30 DIR gyms in Barcelona.
  • Monthly TGIF events and regular team-building activities.
  • On-site ping-pong table and arcade machine.

Tech Stack

AngularAWSDockerGitGrafanaJenkinsKibanaKubernetesLinuxMySQLNode.jsTypeScript
Smadex SLU

About Smadex SLU

201-500 employees
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