# Mark Yencheske > Software Engineer Location: New York City Metropolitan Area, United States Profile: https://flows.cv/markyencheske Software engineer with a passion for creating JavaScript/TypeScript applications with React, Node/ Express, and SQL/NoSQL databases. Co-creator of Accumulus, a developer tool for monitoring AWS Lambda functions, and dedicated member of the open-source community. Recent Public Talks: React and Node Best Practices | SingleSprout Software Engineer Speaker Series Web Development Fundamentals: HTML and CSS | Codesmith Public Workshop Series JavaScript: Variables, Control Flow, and Looping | Codesmith Public Workshop Series My interests include hiking and camping at National Parks, writing music, gardening, and drinking ice cold beer. >>> Find me on GitHub: https://github.com/markyencheske ## Work Experience ### Software Engineer @ MagMutual Jan 2023 – Present | Atlanta Metropolitan Area Currently working on: * Database migration initiative for a Spring Boot API from MongoDB to PostgreSQL to optimize performance and consistency for a large data set by creating a strict ORM and updating endpoints while maintaining returns for minimal client changes. * Contributing to the company's initiative of modernizing the suite of legacy internal React applications, integral tools for the healthcare provider insurance sales team, from class components to functional components, while integrating Typescript, thereby enhancing codebase maintainability, optimizing performance, and improving the developer experience. ### Software Engineer @ CS Engineering Jan 2022 – Jan 2022 | New York, United States - Led technical training for TypeScript, React, Node.js/Express, NoSQL/SQL databases, testing, and authentication procedures to cover full-stack development principles with company best practices, and to encourage continued growth for junior engineers. - Performed code reviews and white boarding during weekly one-on-one mentorship sessions to reinforce approaches to API design. - Mentored teams through the development phase of open-source applications, instilling industry best practices and employing Agile methodology to meet sprint goals, distribute engineering tasks, identify roadblocks, and execute regular code reviews. - Conducted technical interviews with prospective engineers, evaluating their JavaScript ability, technical communication, debugging skills, approach to analytical problem solving, and overall engineering best practices in order to maintain company growth. ### Full Stack Engineer @ Accumulus Jan 2022 – Jan 2022 - Utilized AWS SDK for Node to customize AWS Lambda metric monitoring and parsing of Cloudwatch log data to display actionable data to users, supplying insight into decreasing overhead AWS costs and enhancing Lambda function performance. - Implemented Node and Express to structure a highly scalable and maintainable environment with MVC design that utilizes a middleware chain focused on data security by dispatching custom HTTP cookies, sessions, and authentication of user data. - Customized Webpack configuration and replaced bulky dependencies to reduce application size and streamline the bundle process. - Used React’s Context API for authenticated user sessions for quick development and shareable state enabling long term scalability. - Leveraged React Router (v6) to optimize component rendering with declarative client-side routes to limit network requests. - Incorporated Recharts library to display AWS metrics with dynamic visualization of multiple queries with customized data in order to monitor Lambda performance, quickly identifying errors and pinpointing bottlenecks in function chains for consumers. - Product developed under tech accelerator OSLabs (opensourcelabs.io). ### BookWorm | Reading List application for book clubs and reading enthusiasts @ Open Source Jan 2022 – Jan 2022 - Used React to design a dynamic application with modular, reusable components keeping the codebase maintainable and testable. - Interfaced directly with Google’s Books API to dynamically render detailed information on user-inputted books for improved UX. ### Web Developer @ Best Place at the Historic Pabst Brewery Jan 2020 – Jan 2022 - Designed and managed CMS web applications built with PHP and customized CSS for improved online visibility, increasing private event bookings by 200% by facilitating communication pathways directly with clients to coordinate sales, scheduling, and logistics. - Adapted legacy sites for design consistency with SCSS by implementing a more intuitive UX/UI with visual hierarchy, optimizing accessibility and visibility on search engines by leveraging semantic HTML, increasing overall business traffic online and in person. ## Education ### Applied Science Milwaukee Area Technical College ## Contact & Social - LinkedIn: https://linkedin.com/in/markyencheske --- Source: https://flows.cv/markyencheske JSON Resume: https://flows.cv/markyencheske/resume.json Last updated: 2026-04-13