Zak F.
Full-Stack Developer | SaaS, Chrome Extensions & APIs
I build custom SaaS platforms, web applications, Chrome extensions and business tools for clients who need something more flexible than a template or off-the-shelf system. With 7+ years of hands-on development experience, I work across full-stack development, APIs, databases, dashboards, automation and browser extensions. I have built products for eCommerce, sports, marketplaces, property, finance and other data-driven industries. Alongside client work, I have also built and operated my own SaaS products, so I approach projects from both a technical and product perspective. I care about how the system works in production, how easy it is to maintain, and whether it actually solves the business problem. What I specialise in: • Full-stack SaaS development • Next.js, React, TypeScript and Node.js • Supabase, PostgreSQL, authentication and database design • Admin dashboards and internal business tools • API integrations, Stripe, webhooks and third-party services • Chrome and browser extensions using Manifest V3 • Automation, scraping, parsing and data-processing systems • Custom websites and web design • Responsive, mobile-friendly interfaces • Existing product improvements, debugging and rebuilds I can work with you from an early idea through to a production-ready application, or step into an existing project that needs fixing, improving or expanding. Some of my work includes SaaS platforms, Chrome extensions, multi-user dashboards, subscription products, marketplace monitoring tools and mobile-connected applications. If you need a developer who can handle both the frontend and backend, understand the product as a whole, and take ownership of the technical side, feel free to get in touch.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $1.8k
Billed in all: $3,512$3.5k
$905 in the last 6 months
Earnings, last 30 days
Skill rankings: Top 20% in CSS
Ranked by MRR among everyone on Upwork with the skill.
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- #870Web Scraping3,925 freelancers · 🇬🇧 #14Top 22%🇬🇧#14 of 68
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- #3,767CSS19,042 freelancers · 🇬🇧 #64Top 20%🇬🇧#64 of 362
- #3,782HTML18,716 freelancers · 🇬🇧 #66Top 20%🇬🇧#66 of 360