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# Software Engineer (Platform Experience)

- **Company:** Smadex
- **Location:** Madrid, Spain (Remote available)
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, Artificial Intelligence, Amazon Web Services, Amazon Cloudfront, Amazon Elastic Compute Cloud, Amazon S3, Application Integration Architecture, JIRA, Cloud Computing Security, Databases, Computer Literacy, Data Integrity, Database Queries, Linux, DevOps, Memcached, Microsoft OneNote, MySQL, Node.Js, Software Engineering, TypeScript, Web Applications, Working Model 2D, Amazon ElastiCache, Large Language Models, Grafana, Multi-Agent Systems, Backend, Git, Amazon Relational Database Service, AngularJS, Kubernetes, Information Technology, Front End Software Development, Route53, Virtual Agents, Kibana, Restful APIs, Docker, Jenkins
- **Published:** August 5, 2026
- **Apply:** https://www.buscojobs.com.es/software-engineer-platform-experience-en-madrid-ID-365490677

## About the Role

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

## Description

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 TackleAgentic 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 ForBachelor'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 StackMain languages: Angular, NodeJSDatabases: MySQL, MemcachedCloud & DevOps: AWS, Jenkins, Docker, KubernetesTools: Git, Jira, NotionMonitoring: Grafana, Kibana, AWS toolsWhat We OfferJoin a highly motivated and talented team in a fun and friendly work environmentGreat compensation packageTop location at the heart of Barcelona with a rooftop terrace, Barbeque, and a fully stocked fridgeGreat work?life balance: work from home (2 days per week) and flexible hoursProfessional development with a LinkedIn Learning subscription and other training opportunitiesMeal vouchers - Ticket Restaurant monthly allowancePrivate Health InsuranceMonthly gym allowance to use in up to 30 DIR gyms around the cityMonthly TGIF events and regular team?building activitiesPing?pong table and arcade machineAnd more!#J-*****-Ljbffr


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