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Senior Backend Engineer
Компания: Harvey Nash Technology
Город: Warszawa
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Senior Backend Engineer (Kotlin / Java) | Remote | You will: Build and maintain backend services behind a high-traffic mobile application, covering chat communication, memory capabilities and user personalization Work on AI-powered assistants that support the purchasing journey and the pre-purchase experience Develop new product features and extend existing functionality to cover additional business use cases Improve and harden existing components, with a focus on scalability, reliability and performance Take end-to-end ownership of your services: development, maintenance, monitoring and operational excellence Take part in architectural and technical decisions, as part of a small team (about 6 engineers) with a product-oriented, high-ownership culture Use AI tools in your daily engineering work and help evolve AI-driven user experiences You bring: Strong backend engineering experience in the JVM ecosystem (Kotlin or Java) and a track record of building production-grade systems Excellent problem-solving and analytical skills, and strong architectural thinking Practical experience using AI in software development or building AI-enabled features (please make it visible on your CV) Curiosity about emerging AI technologies and willingness to experiment with them Experience in fast-paced product environments and comfort taking ownership of services end to end Strong English communication skills Nice to have: Experience with high-scale distributed systems Observability and monitoring tools (Prometheus, Grafana) Kotlin (Java developers who are open to learning Kotlin are welcome)