Node.js, Next JS, Micro Front-End architecture, Typescript, Graph QL, Bootstrap.js, HTML5, XML, CSS3, JavaScript, REST services, NoSql technologies (Cassandra/Mongo DB), Spring boot, Kafka/MQ, Redis, ELK, Azure / AWS, Prometheus/Grafana, Git, Jira, Jenkins, Docker, Kubernetes, Quantum Metrics, Performance testing, Performance tuning. We are looking for a Principal Software Engineer who has hands on experience on both front-end (UI) and back-end technologies and extensive experience is solving web application performance bottlenecks and optimize services and applications to improve overall performance of the system.