SaaS Development

Website & Product Development for SaaS Companies in USA & UK

SaaS websites need to do a lot of heavy lifting: explain complex products simply, drive trial signups, and onboard users effectively. I specialise in building all of it — from the marketing site to the product itself.

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SaaS Services

Everything a SaaS Business Needs Online

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SaaS Marketing Site

High-converting marketing sites that explain your product clearly, build trust fast, and drive trial or demo signups. Built for SEO and page speed from the ground up.

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SaaS Product / App Build

Full-stack SaaS platform development — from the database schema to the React dashboard. Auth, billing, usage limits, multi-tenancy, and admin panel all included.

Full stack services →
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Onboarding Optimisation

User onboarding is where SaaS companies win or lose. I design and build onboarding flows that get users to their "aha moment" faster, reducing churn in the critical first 30 days.

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Analytics & Tracking

Proper analytics setup — funnel tracking, feature usage, churn signals, and MRR reporting. Know exactly where users drop off and why, so you can fix it.

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Billing & Subscription

Stripe Billing integration, subscription tiers, usage-based billing, free trials, upgrade flows, and dunning management. SaaS revenue infrastructure done right.

Performance & Core Web Vitals

Slow SaaS apps destroy retention. I optimise load times, runtime performance, and perceived speed — because users will churn from a slow app before they churn from a feature-incomplete one.

Featured Case Study

SaaS Platform: Concept to 3x User Growth in 90 Days

Next.jsSaaSStripeOpenAI

Flowlytics — Fintech SaaS (London, UK)

Flowlytics needed a complete rebuild of their fragile MVP — a real-time financial analytics SaaS for UK mid-market businesses. The old stack couldn't handle more than 100 concurrent users and onboarding took 45 painful minutes.

I rebuilt the entire platform in 8 weeks: new Next.js frontend, Node.js backend, PostgreSQL database, and an AI report generation engine using OpenAI. The results were immediate.

Onboarding cut from 45 to 18 minutesSmart defaults, step-by-step wizard, automated data connections.
User base tripled in 90 daysWord-of-mouth from a product that finally worked reliably.
99.9% uptime since launchProper architecture, AWS auto-scaling, comprehensive monitoring.
Contributed to Series A fundraiseCEO credited the rebuild as a key factor in closing their funding round.
Read the full case study

The Numbers

Build time8 weeks
User growth (90 days)3x
Onboarding time reduction-60%
Platform uptime99.9%
Manual reporting reduced-80%
★★★★★

"Alex is hands down the best developer I've worked with. Our platform went from concept to launch in 8 weeks and it's rock solid."

— James Richardson, CEO Flowlytics
FAQ

SaaS Development Questions

Yes. I handle the full scope — marketing site, product application, backend API, database, billing, and deployment. Some SaaS founders prefer to separate the marketing site and app projects; I can do either or both.

Yes — multi-tenancy is a standard part of my SaaS builds. This includes isolated data per organisation, team member invites, role-based permissions (admin/member/viewer), and organisation-level billing.

I integrate Stripe Billing for subscription management — including free trials, multiple pricing tiers, annual/monthly billing, usage-based pricing, and upgrade/downgrade flows. I also configure Stripe's customer portal so users can self-serve their billing.

An MVP SaaS with core features typically starts at $8,000. A full-featured SaaS platform with advanced features, integrations, and a polished marketing site ranges from $15,000–$40,000. Book a call for a project-specific estimate.

Let's Build Your SaaS the Right Way

Book a free 30-minute call. Tell me about your SaaS idea or current product — and I'll tell you what it takes to build or improve it.