Marvin Titus-Casseus, Developer in Saint Petersburg, FL, United States
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Marvin Titus-Casseus

Verified Expert  in Engineering

Software Developer

Saint Petersburg, FL, United States
Toptal Member Since
November 17, 2021

Marvin started his career as a software developer while attending university. Since then, his work has been primarily focused on back-end development, but he has also completed projects using front-end frameworks such as React, Vue.js, and React Native for mobile applications. He has a passion for technology and learning and thoroughly enjoys a challenge. He carries himself with an anything is possible attitude, loves to execute, can communicate well, and enjoys working with teams!

PHP, MySQL, PostgreSQL, JavaScript, Linux, Node.js, React, Vue, Postman, Jira...
InMotion Hosting
PHP, Vue, Python, JavaScript, Linux, Slack
Cloud Custom Solutions
PHP, JavaScript, React, Laravel, Shopify, SQL, APIs




Preferred Environment

Linux, MacOS, PhpStorm, WebStorm, Visual Studio Code (VS Code), Sublime Text, Bitbucket, GitLab, Amazon Web Services (AWS), Slack

The most amazing...

...integration I've developed is the Cybersource account updater integration for the platform that generated $1,000,000 in revenue in its first year.

Work Experience

Senior Software Engineer

2021 - PRESENT
  • Developed a migration tool that automated the process of migrating a client from our competitor's platform, resulting in increased overall revenues in Q1.
  • Created a new coding challenge and implemented it as a part of the hiring process, resulting in higher quality developers within the team.
  • Acted as a technical lead for the official Shopify subscription app, which led to increased visibility within the Shopify marketplace.
Technologies: PHP, MySQL, PostgreSQL, JavaScript, Linux, Node.js, React, Vue, Postman, Jira, Bitbucket, Slack, New Relic, Looker, Redis Queue

Senior Software Engineer

2019 - 2021
InMotion Hosting
  • Integrated xDebug into our standard development environment and documented the process, allowing other developers to step through their code and improve their code quality.
  • Created a presentation about JavaScript applications and presented it to the development team, raising awareness related to best practices in Vue.js and React applications across the development team.
  • Developed the new order process for InMotionhosting's website, resulting in a more seamless customer experience when ordering a hosting plan.
Technologies: PHP, Vue, Python, JavaScript, Linux, Slack

IT Consultant

2019 - 2020
Cloud Custom Solutions
  • Built a custom content management system for a client, allowing him to update his own websites without having to pay a developer.
  • Developed and successfully launched in under 60 days, allowing the client to open for business earlier than expected.
  • Created over 300 websites for a single client in less than six months, saving him thousands of dollars in development costs.
Technologies: PHP, JavaScript, React, Laravel, Shopify, SQL, APIs

Senior Software Engineer

2014 - 2019
Lime Light CRM
  • Developed an integration that resulted in one million dollars a month in added revenue for the company.
  • Reduced the amount of time it took to build an integration from two months to three days by improving code quality and development processes, resulting in much faster project turnaround.
  • Built the company's first mobile-friendly platform, allowing clients to have a more seamless user experience when viewing the platform from their mobile devices.
Technologies: PHP, JavaScript, SQL, MySQL, Amazon Web Services (AWS), CSS, Sass, React, Ruby, Shopify API, APIs

Om3 Skin Science

A fully featured PHP-based eCommerce website that is integrated with a CMS and payment processing system. I acted as the sole developer on this project and wrote three custom WordPress plugins as a part of the implementation. Subscription Commerce Platform
A LAMP-based eCommerce order management application used for customer relationship management, marketing performance analytics, and transaction processing. I acted as a full-stack senior software engineer responsible for building third-party integrations, internal feature sets, and client-requested enhancements to the platform.
2009 - 2014

Master's Degree in Information Systems

State University of New York (SUNY) - Albany, USA


Java Programming For Complete Beginners



Linux Administration Bootcamp: Go from Beginner to Advanced



The Complete React Native + Hooks Course



React Native: Advanced Concepts



React, Node.js, Vue, Redis Queue, Shopify API


PhpStorm, Bitbucket, Jira, WebStorm, Sublime Text, GitLab, Slack, Postman, Looker


Laravel, React Native, Redux, Spring Boot


SQL, PHP, JavaScript, CSS, Sass, Java, Python, Ruby, COBOL


WordPress, Linux, MacOS, Amazon Web Services (AWS), Visual Studio Code (VS Code), New Relic, Shopify


Database Administration (DBA), MySQL, PostgreSQL




Software Engineering, Web Development, APIs, ActiveCampaign, Records Management, Communication, Operating Systems

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