Software Engineer Senior
Resume:
Christopher Metzner
Lynnwood, WA •
*****************@*****.*** •
https://linkedin.com/in/chrismetzner09105 •
Senior Software Engineer
SUMMARY
10+ years of extensive experience in all phases of SDLC - requirements analysis, applications design, development, integration, maintenance, installation, implementation and testing of various client, server and web applications.
8+ years of professional frontend development using React, Angular, and Vue frameworks, and CMS platforms like WordPress and Drupal.
6+ years of broad experience in backend development using Node.js, Express.js, Laravel, Django,Ruby on Rails, and GraphQL, along with managing databases such as MySQL, PostgreSQL, and MongoDB.
2+ years of AI development experience, including building AI chatbots using OpenAI and other generative AI technologies, and implementing Retrieval-Augmented Generation (RAG) systems with FAISS (Facebook AI Similarity Search).
Successfully developed a dynamic and interactive dashboard, providing real-time analytics, at Apple.
Successfully deployed the MASQ Web browser across multiple platforms at MASQ.
Successfully upgraded an enterprise-level eCommerce project at Newegg. SKILLS
Programming Languages:
HTML5, CSS3, JavaScript, TypeScript, PHP, Python, C/C++
Frontend Development:
React.js,React Native, Vue.js, Angular, Next.js, Nuxt.js, Svelte, SvelteKit, Ember.js, Backbone.js, Electron.js, Redux, Context API, VueX, MobX, NgRx, D3.js, Chart.js, Tailwind CSS, Material-UI (MUI), Bootstrap, Ant Design, Fluent UI, Chakra UI, Semantic UI, Styled Components, Sass, SCSS, Flexbox, CSS Grid, Media Queries
Backend Development:
Node.js, Express.js, Nuxt, Laravel, Django, Ruby on Rails, GraphQL, RESTful API, gRPC, WebSocket, JSON, XML, Auth0, OAuth, JWT
Databases:
MySQL, PostgreSQL, SQLite, Oracle, MongoDB, Firestore, Amazon RDS, Amazon DynamoDB, Azure SQL Database
Tools and Cloud Services:
Web3, Ethers.js, Jest, Mocha, Chai, Enzyme, Jasmine, Karma, Cypress, Puppeteer, Selenium, Webpack, Gulp, Grunt, Parcel, Rollup, Vite, Babel, ESLint, Prettier, AWS (Lambda, EC2, S3, Amplify, SES, RDS), Azure, Google Cloud Platform (GCP), Vercel, Azure DevOps, GitHub Actions, Jenkins, Docker, Kubernetes
Good time management skills to meet deadlines and prioritize tasks effectively.
Clear communication with team members and stakeholders to ensure smooth project progress.
Strong work ethic by consistently delivering high-quality work and going the extra mile to achieve project goals.
High level of accuracy and thoroughness in all tasks, ensuring quality and attention to detail in every project. EDUCATION
Bachelor’s Degree in Computer Science
Seattle University – Seattle, WA
September 2010 to May 2014
EXPERIENCE
MASQ – Lynnwood, WA
Senior Full Stack Developer, July 2021 – Present
I led the frontend development of world’s first Blockchain based web browser from the ground.
Led the development of MASQ web browser using React.js and Electron.js, focusing on user experience.
Introduced a global visualization feature with engaging 3D Earth interactions, resulting in a 20% increase in user engagement.
Created an advanced desktop application interface enabling folder creation and a multi-tab system, thereby improving user file management efficiency by 30%.
Implemented a real-time network speed monitoring feature, providing immediate internet connectivity insights to users and increasing user satisfaction by 25%.
Improved the application's global accessibility through extensive localization and internationalization.
Developed and deployed an automated update system for efficient delivery of software updates and security patches, achieving an impressive 90% adoption rate among users.
Introduced a built-in chat feature to facilitate real-time user communication, engaging thousands of users daily and reducing the reliance on external communication tools.
Designed and developed reusable components and front-end libraries, greatly enhancing development efficiency and cutting down the time needed for future feature development by 20%.
Engaged in continuous professional development, staying ahead of emerging tech trends.
Managed daily stand-up meetings to monitor project progress, tackle development challenges, and ensure timely project delivery.
Performed comprehensive code reviews to ensure high code quality and adherence to best practices, leading to a 30% reduction in bug reports.
Environment: React.js, Electron.js, Web3.js, TypeScript, React Router, Redux.js, React Redux, React Context API, Material-UI, Node.js, Express.js, Socket.IO, MongoDB, SQLite, Jest, Enzyme, React Testing library, Chromium, Chrome extensions, OpenAI Apple – Bothell, WA
Senior Frontend Developer, May 2020 – April 2021
Developed dynamic and interactive data visualizations using D3.js to present complex data in an easily understandable format.
Utilized Redux for efficient state management, ensuring the application could handle large datasets and complex interactions smoothly.
Followed best practices for component-based architecture in React.js, creating reusable and maintainable components.
Optimized frontend performance by lazy-loading components, minimizing bundle size with code-splitting, and using efficient rendering techniques.
Wrote comprehensive unit tests and integration tests for all frontend components using Jest and Enzyme to ensure high code quality and reliability.
Environment: React.js, Redux, D3.js, WebSocket, Agile methodologies, Cross-Functional Collaboration Newegg – Seattle, WA
Full Stack Developer, September 2015 – May 2020
I upgraded Newegg eCommerce platform, enhancing user experience with features such as real-time inventory updates, personalized product recommendations, and a secure checkout process.
Developed and deployed high-performance e-commerce website using MERN Stack enhancing user experience and driving significant client growth.
Developed the NeweggContact App using React Native, successfully deployed on both Android and iOS platforms, ensuring cross-platform compatibility and optimal performance.
Integrated React interfaces with Django backend system, leveraging Django REST Framework to create dynamic and interactive web applications for AI-driven personalized product recommendations and predictive analytics.
Developed a custom, reusable React component library, reducing development time and fostering a consistent look.
Focused on optimizing website performance to ensure fast loading times and an improved user experience.
Developed backend system using Express.js, leveraging its robust routing and middleware capabilities to ensure efficient and scalable server-side operations.
Utilized AWS EC2 and S3 for my eCommerce platform to ensure scalable computing resources and reliable data storage, resulting in improved performance and high availability of the application.
Implemented unit and integration testing using Jest and Enzyme, reducing bugs by 40% and improving code quality.
Collaborated with cross-functional teams to define, design, and ship new features, ensuring alignment with business goals and user needs.
Participated in code reviews, pair programming, and agile ceremonies to maintain high development standards. Environment: React.js, React Native, Vue.js, Angular, Node.js, Express.js, Laravel, Redux, Vuex, NgRx, Django, Python, Bootstrap, Tailwind CSS, Material-UI, Jest, Mocha, Chai, Cypress, Selenium, RESTful APIs, GraphQL, Webpack, Babel, AWS(EC2, S3, Lambda), Azure, Docker, Kubernetes, Jenkins, GitHub Actions, Gatsby, Next.js, NPM, Yarn, Jira, Slack, Agile RealSelf – Seattle, WA
Web Developer, March 2014 – August 2015
I developed a healthcare web application to improve patient portal with new features such as appointment scheduling, medication reminders, and secure messaging.
Developed and managed the RealSelf company website using WordPress, focusing on creating a user-friendly interface.
Developed and maintained backend features using Ruby on Rails for the healthcare platform, ensuring secure handling of sensitive patient data and efficient scheduling operations.
Implemented a real-time notifications and alerts system, leveraging WebSocket technology, to alert users instantly about critical asset maintenance needs, enhancing response times by 20%.
Designed and optimized database schemas in MySQL for storing complex healthcare records, enhancing data retrieval and reporting capabilities.
Ensured the website's compatibility across various browsers by conducting comprehensive testing and debugging.
Collaborated closely with UI/UX designers to translate design mockups into fully functional web pages, ensuring a seamless user experience.
Used Git for version control, collaborating with the development team on codebase management and feature development. Environment: Laravel, WordPress, HTML, CSS (incl. Flex/Grid), JavaScript (incl. jQuery), MySQL, Bootstrap, Git, SVN, Apache, Tomcat, SEO, AJAX, RESTful APIs
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