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# Software Engineer

- **Company:** CIS Electronics Engineering
- **Location:** Madrid, Spain
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, Amazon Web Services, Confluence, JIRA, User Authentication, Continuous Integration, Amazon DynamoDB, Github, Revision Control Systems, Node.Js, OAuth, Performance Tuning, Security Assertion Markup Language (SAML), Single Sign-On, Amazon Simple Notification Service (SNS), Software Engineering, TypeScript, Test-Driven Development (TDD), Reliability of Systems, Backend, Gitlab, Graphql, Front End Software Development, Api Gateway, Amazon Simple Queue Service (SQS), Domain Driven Design, Serverless Computing
- **Published:** July 23, 2026
- **Apply:** https://www.adzuna.es/contact-us.html

## About the Role

+ 7+ years of experience in back-end development with expertise in TypeScript and Node.js.
 + Strong hands-on experience with AWS services (Lambda, Cognito, SNS, SQS, DynamoDB, API Gateway) in production environments.
 + Solid understanding of secure, scalable, and high-performance systems and architectures.
 + Strong grasp of software engineering principles including Clean Code, Test Driven Development (TDD), and Continuous Integration/Deployment.
 + Familiarity with collaboration and version control tools (Jira, Confluence, GitHub, GitLab).
 + Experience with Domain-Driven Design (DDD) is a plus.
 + Strong communication skills with the ability to work cross-functionally in a multicultural team.

## Description

Join a fast-growing, international tech environment where you'll play a key role in designing and deploying scalable and secure back-end systems. This position involves high-impact work on a critical team responsible for Authentication and Authorization, leveraging cutting-edge tools like TypeScript, Node.js, AWS, and GraphQL. You'll contribute to performance optimization, guide architecture decisions, and mentor junior developers - all while thriving in a collaborative, fast-paced atmosphere that values innovation, autonomy, and continuous learning.
Accountabilities:

 + Design, build, and maintain scalable back-end services using TypeScript and Node.js within a serverless AWS environment.
 + Develop and maintain features related to authentication and authorization (SAML, SSO, OAuth 2.0).
 + Utilize GraphQL as Backend-for-Frontend (BFF) architecture to improve integration with customer-facing applications.
 + Monitor and optimize platform performance and contribute to the reliability of mission-critical systems.
 + Participate in the full software development lifecycle - from requirements gathering and architecture through testing, deployment, and maintenance.
 + Take part in on-call rotations to ensure system reliability and address incidents promptly.
Mentor junior engineers and advocate for engineering best practices across teams.


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