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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Full Stack Software Engineer - **Company:** Yo Ai Labs - **Location:** Madrid, Spain (Remote available) - **Contract:** Permanent contract - **Skills:** HTML, Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Amazon Web Services, Amazon Elastic Compute Cloud, Amazon S3, Automation of Tests, Bash Shell, Bootstrap (Software), C++ (Programming Language), Cascading Style Sheets (CSS), Computer Programming, Databases, Continuous Integration, Relational Databases, DevOps, Distributed Systems, Amazon DynamoDB, FreeMarker, Protocol Buffers, Groovy, Mobile Application Software, Python (Programming Language), PostgreSQL, MongoDB, Scrum Methodology, Software Engineering, Web Application Frameworks, Web Services, WebRTC, AWS Cdk, ReactJS, Backend, Git, Cloudformation, Information Technology, Data Analytics, Front End Software Development, React Redux, Amazon Simple Queue Service (SQS), Terraform, Grpc, Serverless Computing, Docker, Jenkins, Golang, Microservices - **Published:** September 24, 2026 - **Apply:** https://www.adzuna.es/contact-us.html ## About the Role Analytical and inventive. You experiment, learn fast, and refine your approach. Data-driven and innovative mindset. You eagerly try new things and learn from your experiences. Logical and creative problem-solver, with the ability to summarize issues simply and effectively. Organized and adaptive. You can balance multiple priorities in a dynamic environment. Clear and concise communication. You effectively set expectations, give feedback, and collaborate effectively. Strong team player with a positive, can-do attitude and the ability to adapt to changes. Comfortable working with ambiguous requirements and shaping clarity as you go. Excited to explore and adapt to new technologies. Bring modern engineering practices to life. You mentor peers and contribute to technical direction., A Bachelor of Computer Science or related field. 5+ years of professional software development experience using modern frameworks and tools. (Java, HTML, CSS, JavaScript) Relevant development experience with Java, JavaScript, and front-end SPA frameworks (Bootstrap). HTML/CSS, experience with Java template engines (e.g. FreeMarker, Thymeleaf, etc.) Relational database experience (e.g. PostgreSQL) Knowledge of Amazon Web Services (AWS) such as S3, SQS, ECS, EC2, and Lambda would be preferrable. Proficiency with Git. Proficiency with spoken and written English. What Would Be Nice (Preferred Skills & Experience): 1+ years of production experience in Golang. Programming experience in Python, Groovy, Bash, and/or C++. Experience with cloud provisioning with infrastructure as code using CloudFormation, Terraform, AWS CDK, and/or similar. Experience developing solutions for deployment within Docker containers, CI/CD procedures (Jenkins) and implementation of distributed systems based on serverless technology or micro-services architecture. Frontend exposure to React/Redux, or similar JavaScript frameworks. Database experience with MongoDB, DocumentDB, DynamoDB, or RDS. Experience developing solutions for deployment within Docker containers, CI/CD procedures (Jenkins) and implementation of distributed systems based on serverless technology or micro-services architecture. Familiarity with gRPC, Protocol Buffers, or image processing. Experience integrating WebRTC into web/mobile apps and backend services. ## Description Design, build, and deploy production-grade APIs and services within a microservices/serverless architecture. Own your code from design to deployment, ensuring scalability, security, and performance at every step. Automate testing and delivery through robust unit, integration, and performance tests for reliability at scale. Document your work clearly for internal stakeholders and external developers consuming our public APIs. Collaborate cross-functionally with product managers, researchers, and operations teams to translate ideas into production-ready features. 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