Open to opportunities

Celmo Moss

@celmo_mosse

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Full stack developer.

South Africa

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What I'm looking for

I am looking for a collaborative environment that fosters innovation and growth.

As a passionate Front End Web Developer with a focus on creating visually appealing and user-friendly interfaces, I have honed my skills in HTML, CSS, and JavaScript frameworks such as React, Angular, and Vue.js. My experience includes ensuring responsive design and cross-browser compatibility, which allows me to deliver seamless user experiences across various devices. I thrive on the challenge of integrating APIs and managing application state with tools like Redux, ensuring that the applications I develop are both functional and engaging.

In addition to my front-end expertise, I have a solid background in backend development, utilizing frameworks like Node.js, Django, and ASP.NET to implement server-side logic and manage databases with SQL and NoSQL technologies. My project experience includes developing a full-featured real estate website and a dynamic COVID-19 tracker, showcasing my ability to create complex applications that meet user needs. I am committed to continuous learning and improvement, always seeking to enhance my skills and contribute to innovative projects.

Experience

Work history, roles, and key accomplishments

Current

Backend Developer

Current

Upwork

Feb 2021 - Present (4 years 5 months)

Built a modular MongoDB schema for an e-commerce platform, optimizing read performance by ~40%. Created a Jest unit testing suite with 85%+ code coverage, improving backend reliability and catching edge-case bugs early. Deployed services in Docker containers and automated deployments via GitHub Actions and AWS EC2.

Node Django ASP.NET SQL MySQL PostgreSQL MongoDB RESTful APIs Authentication Authorization

Current

Front End Web Developer

Current

Upwork

Feb 2021 - Present (4 years 5 months)

Designed and implemented responsive UIs with Tailwind CSS and Sass, ensuring pixel-perfect rendering across desktop and mobile devices. Developed reusable component libraries, reducing development time for future projects by ~25%. Integrated external REST APIs and implemented error boundaries for graceful data loading.