I'm William Andersen, a Senior Full Stack Developer with 9 years of experience building scalable web and mobile applications.
I’m William Andersen, a Senior Full Stack Developer with 9 years of experience building scalable web and mobile applications. I specialize in React, Next.js, TypeScript, Node.js, and Express, delivering robust front-end interfaces and solid back-end services while collaborating closely with product managers and designers to translate requirements into intuitive, high-performance solutions.
Across Copenhagen and Paris-based teams, I have led end-to-end projects, implemented AI-enabled workflows, and architected cloud-native architectures on AWS. I value proactive problem solving, maintainable code, and mentoring junior developers to deliver secure, reliable, and impactful products.
The Car Rental App is a comprehensive full-stack application where you can seamlessly explore an array of cars, search by name, delve into comprehensive car details, make reservations when logged in, manage reservations, add or delete cars in the database, and personalize your profile with ease.
Senior software engineer at a strategic Copenhagen-based agency delivering innovative web design and development solutions. Created server-side applications using Node.js and Express to support real-time communication between client and server. Optimized websites for maximum speed and scalability, ensured cross-browser and cross-device compatibility, and debugged and fixed issues promptly. Built end-to-end mobile applications with backend connectivity, and collaborated with developers and designers to deliver high-quality web applications. Implemented RESTful APIs for interoperable systems.
Senior Software Engineer responsible for developing web applications using Node.js and Express, implementing server-side applications, enabling real-time communication, developing RESTful APIs, and ensuring cross-platform compatibility. Collaborated with designers and developers to deliver scalable web solutions, worked on backend features and mobile backend integration, and adopted cloud-native architectures for high-availability systems.
At InBold, a strategic communications agency in Copenhagen, I developed innovative web design and development solutions with a creative approach. I created a server-side application using Node.js and Express to support real-time communication between client and server. I optimized websites for speed and scalability, ensuring compatibility across browsers and devices. I debugged and fixed application issues promptly, developed new features, and optimized existing code for scalability. Additionally, I built RESTful APIs for system interoperability, utilized programming languages including Objective-C, Java, and Swift to build mobile applications, and provided technical support to customers. I collaborated closely with developers and designers to ensure the successful development of web applications.
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