Job Summary: We are seeking a Senior Full Stack Developer to lead the evolution of an IoT platform, designing and maintaining serverless services on AWS and collaborating on mobile applications. Key Highlights: 1. Strategic and highly visible role within a modern engineering culture 2. Collaborative international team and strong technical leadership 3. Career development and growth path within Coderio **About Coderio** Coderio designs and delivers scalable digital solutions for global enterprises. With a solid technical foundation and a product-oriented mindset, our teams lead complex software projects from architecture through execution. We value autonomy, clear communication, and technical excellence. We collaborate closely with international teams and partners, building technology that makes an impact. More information: http://coderio.com We are looking for a Senior Full Stack Developer to lead the evolution of a platform—an IoT ecosystem connecting field devices with a serverless AWS backend, administrative web applications, and native Android mobile apps—working with real-time data and high operational criticality. **What You Can Expect From This Role (Responsibilities)** Design and maintain serverless services on AWS Lambda using Node.js and TypeScript. Evolve the administrative web portal built with React (Vite, Material UI). Manage infrastructure on AWS using Terraform (IoT Core, DynamoDB, Timestream, Cognito). Collaborate on maintenance and new features for the native Android app (Kotlin/Java). Ensure integrations between IoT devices, cloud backend, and external systems (e.g., SAP). Participate in code reviews, testing with Jest, and CI/CD pipelines in GitHub Actions. **Requirements** 5 years of experience as a Full Stack Developer Advanced proficiency in Node.js. Advanced proficiency in TypeScript. Solid experience with React v18+, preferably with Vite and state management using Context/Hooks. Practical experience with AWS: Lambda, API Gateway, DynamoDB, Timestream, and Cognito. Design and consumption of GraphQL APIs (Apollo or AWS AppSync, server and client). Experience with unit and integration testing using Jest / Testing Library. **Nice-to-Have** Experience with IoT using AWS IoT Core, MQTT, and Device Shadows. Knowledge of native Android development (Kotlin/Java), Dagger/Hilt, and lifecycle management. Use of Serverless Framework for local deployments. Experience with Infrastructure-as-Code using Terraform. Observability knowledge with Firebase. **Benefits** 100% remote work Long-term commitment, with autonomy and impact Strategic and highly visible role within a modern engineering culture Collaborative international team and strong technical leadership Career development and growth path within Coderio **Why Join Coderio?** At Coderio, we value talent regardless of location. We are a remote-first company passionate about technology, collaborative work, and fair compensation. We offer an inclusive, challenging environment with real opportunities for growth. If you’re motivated to build impactful solutions, we’re waiting for you. Apply now. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.