Software Engineer (Platform Experience)

Smadex; Barcelona; Presencial; EUR 50.000 - 70.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Meal vouchers

Private health insurance

Gym allowance

Hybrid work model

Professional development

Descripción de la vacante

Smadex, a cutting-edge ad-tech company in Barcelona, seeks a full-time software engineer to contribute to backend services and AI-driven automation. You will work across the stack with Node.js and Angular, focusing on scalable, secure, and data‑driven features.

You’ll join a hybrid team, enjoy a great location, and have opportunities to explore LangChain, AWS Bedrock, and modern DevOps practices while delivering impactful improvements for high‑traffic systems.

Formación

• Bachelor’s degree or equivalent experience in CS/engineering.
• 40 hours per week full-time.
• Experience with Node.js or Angular in professional software development.
• Understanding end-to-end web apps from user action to DB query.
• Strong knowledge of Angular/TypeScript and RESTful APIs.

Responsabilidades

• Implement AI agents and automation using LangChain and AWS Bedrock.
• Build scalable backend services with Node.js.
• Ensure infrastructure security with AWS WAF/CloudFront.
• Own features from architectural discussions to deployment.

Conocimientos

Angular/TypeScript

Node.js

RESTful APIs

Clean code

Performance

Security

AWS

Git flows

English documentation

Problem solving

AI curiosity

Educación

Bachelor’s degree in Computer Science/Engineering or related field

Herramientas

AWS

Jenkins

Docker

Kubernetes

Git

Jira

Notion

Descripción del empleo

Smadex is a cutting‑edge ad‑tech company processing more than 4.5 million ad requests per second with response times under 100ms. While our real‑time bidding systems handle the traffic, our team builds the core platform that powers them.

We are responsible for the web ecosystem that ensures data integrity and campaign solidity. Without our platform, the real‑time engines wouldn’t have the high‑quality data they need to perform. We are now evolving this ecosystem by integrating Agentic AI to automate processes and maintain our competitive edge.

This is a full‑time position (40 hours per week) with a hybrid working model based in Barcelona.

The Challenges You Will Tackle

• Agentic AI Integration: Help us implement AI agents and automation using LangChain and AWS Bedrock to keep our product at the cutting edge of the industry.
• Solid Backend Foundations: While we use Angular, our heart is in the backend. You’ll be building scalable services with Node.js.
• Cloud & Security: You will learn to manage and protect infrastructure using AWS WAF and CloudFront, ensuring our users’ data is always safe.
• End‑to‑end Ownership: You’ll be involved in the full lifecycle, from architectural discussions to deployment.

What We Are Looking For

• Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent experience (or last year studying).
• You’re available to work full‑time (40 hours per week).
• Experience in professional software development (ideally with Node.js or Angular).
• The “Whole Picture” Mindset: You understand how a modern web application works end‑to‑end. You know what happens between a user click and a database query.
• Technical Literacy:
  • Frontend: Deep knowledge of Angular/TypeScript and a solid grasp of how to interact with RESTful APIs efficiently.
  • Backend: Strong Node.js skills and a focus on scalability, security, and data integrity.
  • Regardless of your side, you write clean, testable code and care about performance and security (AWS S3/WAF/CloudFront).
• Problem‑solving DNA: You don't just wait for instructions; you investigate, ask “why,” and propose solutions.
• Curiosity for AI: You’ve experimented with (or are eager to master) LLMs and AI orchestration tools.
• Familiarity with Git flows and basic clean code principles.
• English: Good reading and writing skills (technical documentation is in English).
• Bonus points:
  • Basic Linux skills and comfort working with a terminal.
  • Experience with Angular or Node.js. Don’t worry, you’ll learn everything else you need!
  • Experience with AWS (EC2, S3, WAF, Cloudfront, Elasticache, Route53, RDS, Bedrock…)

Don’t check every box? Apply anyway. We are looking for potential, curiosity, and a growth mindset. If you don’t have experience with every tool in our stack but you are a quick learner and a great problem‑solver, we want to hear from you. Your ability to adapt and grow is more important to us than your current toolkit.

Please note: We do NOT provide VISA sponsorship. Candidates without a legal permit to work in Spain will not be considered.

Our Tech Stack

• Main languages: Angular, NodeJS
• Databases: MySQL, Memcached
• Cloud & DevOps: AWS, Jenkins, Docker, Kubernetes
• Tools: Git, Jira, Notion
• Monitoring: Grafana, Kibana, AWS tools

What We Offer

• Join a highly motivated and talented team in a fun and friendly work environment
• Great compensation package
• Top location at the heart of Barcelona with a rooftop terrace, Barbeque, and a fully stocked fridge
• Great work‑life balance: work from home (2 days per week) and flexible hours
• Professional development with a LinkedIn Learning subscription and other training opportunities
• Meal vouchers – Ticket Restaurant monthly allowance
• Private Health Insurance
• Monthly gym allowance to use in up to 30 DIR gyms around the city
• Monthly TGIF events and regular team‑building activities
• Ping‑pong table and arcade machine
• And more!