Reuben Holland
Senior Full-Stack Engineer | Growth, Monetization & AI Systems
Professional Summary
Senior Full-Stack Engineer specializing in Growth & Monetization infrastructure. Proven track record of delivering revenue-critical AI features and global scalability projects yielding 6-figure annual ARR contributions. Expert in bridging the gap between complex legacy systems and modern, experimentation-driven product features.
Core stack: Python (Django/Flask), TypeScript (React/Node.js), SQL, Stripe, AWS
Languages: English (Native), Dutch (Proficient), Spanish (Functional)
Professional Experience
Prezi — Senior Full-Stack Engineer (Growth & Monetization)
Feb 2024 – Present
- Led engineering delivery of document-level restrictions (largest monetization improvement of 2025), resulting in a 30% increase in re-subscriptions and an estimated $200k annual revenue contribution.
- Spearheaded end-to-end implementation of AI image generation, integrating generative workflows into core presentation creation.
- Directed architectural introduction of 40 new languages to the legacy stack, expanding global market accessibility.
- Engineered core components of the AI credit system (15.5% increase in AI-driven creation; 32% spike in users hitting credit limits for upgrades).
- Implemented the Easy Prezi GTM Pricing Page (1.3% relative lift in new subscriptions; 22k annualized activated users).
- Mentored junior engineers while migrating legacy Django services to Node.js and transitioning subscription billing from Zuora to Stripe.
Josieapp.com — Full-Stack Engineer
Aug 2022 – Feb 2024
- Overhauled the frontend and led prompt engineering for ChatGPT API integration, improving engagement.
- Built josielabs.com, an AI-powered platform for generating employment credentials using Flask and Python.
- Managed full-lifecycle deployment and operations of web applications on AWS.
De School Amsterdam — Full-Stack Engineer
May 2022 – Feb 2024
- Developed and deployed the primary web presence; led a full server + email infrastructure migration; maintained systems for ~800k monthly visitors (popular nightclub).
Early Career
- High-BROWSE (2021–2022): Led UI design and implementation for an EU law-text search engine and RegulationCompare.
- Time to Candidate (2019–2021): Automated recruiter data migration using Python and web-scraping, increasing database accuracy and speed.
- Dataska Solutions (2017–2019): Developed data analysis tools and UX-focused dashboards using Python and Pandas.
Education
- WelTec / SAE Auckland — Cert. of Culinary Arts (2009) | Diploma Audio Engineering (2007)