Darren Jensen

Senior Software Engineer

Dick's Sporting Goods•  July 2023 - Present

Implemented a micro-frontend architecture using Angular and React, breaking down a monolithic application into modular, independently deployable components, which increased performance by 30%. Utilized Cypress commands and assertions to perform thorough UItesting, validating elements, content, and behavior across different browsers and devices, which increased code coverage by over 90%. Architected and implemented serverless applications using AWS Lambda and API Gateway, reducing infrastructure costs by 40%, utilized SQS for decoupling microservices written in Typescript and Python, ensuring reliable message delivery, which enhanced system reliability and scalability. Worked in anAgile environment, conducted daily code reviews, mentored junior developers, and authored comprehensive technical documentation,reducing onboarding time for newteam members by40%.

Software Engineer

JLL Software•  April 2017 - December 2020

Worked on internal employee management system using React, Typescript, Graphql, Node, AWS and PostgreSQL within microservice architecture. Implemented robust authentication and authorization mechanisms using JWT and OAuth2 for secure user access, added admin scripts and cron jobs. Implemented Redux structure for managing global state and built fully responsive UI , customizing MUI components, through active communication with designers. Employed Docker and Kubernetes for containerization and orchestration, improving the deployment process's consistency and reliability.

Software Engineer

United Health Group•  October 2014 - March 2017

Built the frontend of UHG public web app using React, ensuring smooth user experience. Implemented Azure DevOps and Azure Storage cloud solutions, increasing infrastructure efficiency by 13%. Migrated 54% of the organization's code repositories to Subversion (SVN) to streamline version control Designed and managed MySQL schema, implemented backend functionalities with Express.js, including RESTful APIs and authentication mechanisms. Built fully responsive UIs using CSS and SCSS, created 3D models using Three.js.