Tech Stack: TypeScript, Express, NestJs, AWS, Azure, Git, Unit Testing, Node, Mongo, Scrum Software: - Designed and implemented core business logic - Improved existing queries reducing response time by 30% - Refactored lambda code improving performance by 99%, running time dropped from 900s to 2s Test coverage: - Introduced tests using Jest, gradually increasing code coverage to 90% on all projects - Lectured and supervised peers on unit and integration testing Mentorship: - Devised and executed a mentorship program for junior software engineers - Presented the project results to all software developers in the company alongside positive feedbacks from the participants

Software: - Developed a backoffice application to be used with the customer support team - Improved support tickets answer speed by 50% - Implemented caching strategies to improve response time by 40% and reduce database workload