> Markdown version of [/jobs/ext/4663453-full-stack-engineer-id100404](https://www.wearedevelopers.com/jobs/ext/4663453-full-stack-engineer-id100404). 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 ID100404 - **Company:** NĂºmero De - **Location:** Spain - **Contract:** Permanent contract - **Skills:** Java (Programming Language), JavaScript (Programming Language), Amazon Web Services, Software as a Service, Cloud Computing, Code Review, Continuous Integration, DevOps, Software Construction, Software Engineering, SQL Databases, TypeScript, ReactJS, Front End Software Development, Microservices - **Published:** November 11, 2026 - **Apply:** https://www.adzuna.es/details/5960767134 ## About the Role If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you!, The mandatory requirements are 3+ years of SaaS experience, strong Java, React, and SQL, microservices, CI/CD and observability practices, and an upper-intermediate English level., 3+ years of SaaS experience. - High level of proficiency in Java, React, and SQL. - Knowledge of or prior experience with microservices architecture. - Front-end experience (JavaScript, TypeScript, ReactJS). - DevOps mindset of automation and continuous improvement. - Good understanding of observability and familiarity with strong CI/CD practices. - A proven ability to meet deadlines, motivate others, and consistently produce high-quality, impactful results. - Upper-intermediate and higher English proficiency. NICE TO HAVES - Experience building software in the cloud (AWS preferred). ## Description We are looking for a Mid-level Full Stack Developer to build secure, scalable software for public safety agencies, including a client integration system built from scratch., Build a cleanly designed, reusable client integration system adhering to secure cloud software best practices, from start to finish. - Collaborate with design and product teams to understand requirements, create estimates, plan sprints, and meet delivery timelines. - Plan and accurately estimate construction and delivery timelines. - Contribute to technical documentation and automated build and deployment processes designed to increase engineer efficiency. - Review code submitted by other software engineers and submit your own code for review as part of our pull-request deployment process.