> Markdown version of [/jobs/ext/3944061-full-stack-engineer](https://www.wearedevelopers.com/jobs/ext/3944061-full-stack-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# full-stack engineer

- **Company:** Qatium
- **Location:** Valencia, Spain
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Amazon Web Services, Microsoft Azure, Big Data, Code Review, Relational Databases, HP Systems Insight Manager, Python (Programming Language), Key Management, Enterprise Messaging Systems, Node.Js, Security Assertion Markup Language (SAML), Systems Integration, TypeScript, Web Applications, Application Enhancement Tool, Cloud Platform System, ReactJS, Delivery Pipeline, Backend, Git, Vue.js, Event Driven Architecture, Kubernetes, Apache Kafka, Front End Software Development, Api Design
- **Published:** October 27, 2026
- **Apply:** https://www.adzuna.es/details/5942259655

## About the Role

We're looking for a full-stack engineer who enjoys building great products, solving complex technical challenges, and taking ownership of solutions from idea to production.

You'll work across frontend and backend systems, designing and delivering reliable, scalable, and secure features that create meaningful value for our customers.

This is a highly hands-on role for someone who thrives in a fast-moving environment, makes thoughtful technical decisions, and is comfortable navigating ambiguity and driving work independently., * Full-stack engineering experience: Proven experience building and delivering production web applications, with the ability to work confidently across frontend and backend systems.

 * Modern frontend development: Strong knowledge of TypeScript and experience with a modern frontend framework such as React, Vue.js, or equivalent.
 * Backend development: Solid experience with at least one backend language, such as Python, Go, or Node.js, including API design and relational databases.
 * Production engineering: Hands-on experience with Git, CI/CD pipelines, containers, deployment workflows, and application monitoring.
 * Ownership & autonomy: A track record of independently delivering features or solving complex technical challenges, even when requirements are not fully defined.
 * Engineering judgement: Ability to balance speed, simplicity, security, performance, and long-term maintainability.
 * Product mindset: Genuine interest in understanding user problems and delivering solutions that create real customer value.
 * English proficiency: Strong written and spoken English, comfortable working in an international team.

It's a plus if you have

 * Experience with cloud environments such as AWS or Azure, Kubernetes, or GitOps.
 * Familiarity with event-driven architectures and messaging systems such as NATS, Kafka, or Pub/Sub.
 * Experience with authentication and authorisation technologies, including SSO, SAML, or secrets management.
 * Background in data-intensive applications, IoT, digital infrastructure, or water utilities.

## Description

Design, build, deploy, and maintain customer-facing features across the full stack, taking ownership from technical design through production.

Backend Engineering & Architecture

Build and evolve backend services, APIs, and integrations, making pragmatic technical decisions that improve scalability, reliability, and maintainability.

Engineering Quality & Security

Deliver secure, well-tested, production-ready software, proactively identifying risks, improving existing solutions, and ensuring long-term quality.

Product Thinking & Problem-Solving

Collaborate with Product and Design to understand customer needs, challenge assumptions, and turn complex problems into simple, effective solutions.

Continuous Improvement & AI-Assisted Development

Improve engineering practices through collaboration, code reviews, and knowledge sharing, leveraging AI-powered tools to accelerate development while maintaining high standards of quality and security.