William Menzen Email & Phone Number

Developed interactive web pages using HTML5, SASS, and React/Vue, Angular to create dynamic user interfaces.Implemented state management using Redux, Vuex, and RxJS, ensuring efficient data flow and application scalability.Developed a Video Conferencing Application for live streaming, chat rooms, and video chat.Developed mobile app development with React Native covering iOS and Android.Delivered user-friendly, responsive, and pixel-perfect web pages, providing an optimal experience across various devices.Utilized React Native and Redux to build robust applications from the ground up, catering to both iOS and Android platforms.Collaborated closely with the design team to translate intricate designs into reusable interactive React Native components, ensuring seamless integration of design and functionality.Employed Test-Driven Development (TDD) to establish comprehensive Unit Test Cases, bolstering code reliability and leveraging testing frameworks such as Jest, Cypress, and Playwright to enhance project stability and robustness.Developed ASP.NET Core Web API based on departmental requirements and specifications.Designed and developed Entity Framework 2.0 Code-First approach with Repository-Pattern based backend and used RESTful and Web API as transaction and communication technology to the clientside.Leveraged Node.js, Express/Nest to architect server-side logic, seamlessly integrating middleware for effective management of HTTP requests.Utilized Django framework to develop robust and scalable web applications, incorporating backend logic, database management, and seamless user experiences.Led Junior developers as a main developer and experienced strict code review and TDD, detailed and professional PR.Mentored and guided junior developers through code reviews, fostering their growth and ensuring adherence to development standards.Worked with Agile software lifecycle methodologies.

Led the redevelopment of traveling platforms, employing React.js, Redux, React Native, Node.js, Storybook, TypeScript, and MongoDB for a full-stack solution.Designed and implemented API endpoints and GraphQL schemas, ensuring seamless integration withthe front end.Implemented reusable components using React/Vue, Nextjs/Nuxtjs, and Angular for use in multiple enterprise projects.Implemented various screens for the front end using React Native and used various predefined components from NPM (Node Package Manager) and redux library.Handled frontend architecture and matched pixel-perfect accurate screens.Used data visualization techniques to communicate data or information by encoding it as visual objects like points, lines, bars contained, and Timelines in graphics with D3js.Used various testing frameworks including JEST, Mocha, and Cypress to build a more stable project.Used Nodejs, Express/Nest, and PHP framework to build server-side logic and applied with middleware to handle http requests.Google Analytics and A/B testing on specific product details with customer data.Experienced Cross-Platform Mobile Development using React-Native & and Typescript-based mobile apps.Established a continuous integration and deployment (CI/CD) pipeline using GitHub Actions, enhancing the team's development workflow.Deployed the application on AWS EC2, ensuring high availability and reliability.Managed Agile workflows, conducting weekly stand-ups and tracking user stories and bugs in GitHub Projects.Provided production support, debugging issues, and ensuring application stability using monitoring tools like Datadog and Sentry.

Designed and Developed the Company Website's UI using HTML/CSS/jQuery/Bootstrap.Refactored the Backend for some e-commerce websites using Laravel.Implemented payment Gateways to web platforms.Fully Experienced in CMS development using Laravel as a full-stack developer.Integrated Restful APIs to the front end and managed the data flow of the projectContributing to process improvements in project management and quality assuranceCreating reusable React modules for the application to increase the development speedEnsured code quality and reliability through comprehensive unit testing with Jest, adhering to bestpractices in software development.Developed a single-page application using the MERN stack from scratch.Designed and developed a Database using MySQL/MongoDB.Release and maintenance of the company's Design System, using GitLab CI/CD pipelines.Collaborated closely with Product and Design teams to deliver high-quality web solutions using React.js, Redux, and TypeScript, demonstrating strong full-stack capabilities.Addressed user issues in collaboration with customer support, implementing permanent and scalable solutions.Utilized Google Cloud Platform (GCP) for cloud services and implemented CI/CD pipelines using Git Actions and Jenkins, ensuring a smooth development and deployment process.Conducted extensive testing, including manual and automated unit tests, functional testing, and regression tests, ensuring the reliability and robustness of the application.Contributed to business and system analyses during the requirements-gathering stage, ensuring clear and actionable project specifications.Ensured application scalability and performance, implementing optimization strategies and monitoring application health.Actively participated in Agile ceremonies, fostering a collaborative and efficient development environment.

Project management and risk management, ensuring the technical and financial viability of the e-commerce system.Developed Web / E-commerce software.Developed a Bootstrap-jQuery based web client from high-level requirements and UI/UX designs, ensuring a seamless translation of design to code.Translated designs into pixel-perfect, fully responsive UIs using CSS, SASS, Bootstrap, and JavaScript, demonstrating strong attention to detail.Implemented interactive user experiences using JavaScript, jQuery, and CSS, enhancing user engagement.Used CSS/SASS, JS, Razor, Grunt, GIT, HTML, Photoshop, Trello, Basecamp, Zendesk, Jira.