About this position
At OneSimplicity, our mission is to transform cities into AI-powered hubs, making navigation and exploration seamless for residents and travelers. As a Backend Developer, you’ll be responsible for architecting and building the APIs, data pipelines, and backend services that bring our platform to life. You’ll work closely with frontend developers, product managers, and designers to ensure our system is fast, reliable, and ready to scale globally.
Responsibilities
Design, develop, and maintain backend services using Node.js, GraphQL, and AWS.
Optimize database performance and implement best practices with DynamoDB and OpenSearch.
Collaborate with frontend developers to integrate APIs and deliver seamless user experiences.
Write clean, efficient, and maintainable code following industry standards.
Monitor and troubleshoot performance issues to ensure reliability and scalability.
Contribute to CI/CD processes and infrastructure improvements.
Qualifications
2+ years of experience in backend development.
Strong knowledge of Node.js and GraphQL for scalable API design.
Proficiency with AWS services, especially Lambda, DynamoDB, and OpenSearch.
Experience with microservices and cloud-based architectures.
Familiarity with CI/CD pipelines and DevOps practices is a plus.
Strong problem-solving skills and ability to work in a fast-paced startup.
English at B2+ and Slovak proficiency (C2).