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Data-Driven Development That Drives Business Growth

From discovery to scale—we build, measure, and optimise for conversions and revenue. Your growth is our success metric.

Built for Results, Not Just Aesthetics

Discover how data-driven decisions translate to measurable growth. No guesswork, no vanity metrics—just results that matter to your bottom line.

The Problem

Most digital projects launch without success metrics, attribution tracking, or iteration plans. The cost? Sites that don't convert. Campaigns with invisible ROI. Products built on guesswork.

The Partnership

Growth doesn't stop at launch. Monthly reviews with real data. Continuous optimisation based on behaviour. Scalable infrastructure. Partnership, not handoff.

Our Approach

We start with metrics, not mockups. What conversion rate justifies the investment? What's an acceptable cost per customer? What behaviour indicates product-market fit? Every technical choice connects to a measurable outcome. AI handles repetitive work—data analysis, content optimisation, testing variations. We focus on the strategic decisions that actually drive growth.

Tools & Products

Tools that help developers ship quality work faster. The rigorous standards we demand for client projects.

New Product Launch

GuardianScan

2025 Website Audit Tool

The web development industry deserves better audit tools. GuardianScan helps developers ship quality work that helps their customers grow—catching performance, accessibility, and security issues in 45 seconds.

  • Core Web Vitals (LCP, TBT, CLS)
  • WCAG 2.2 Accessibility
  • AI Search Optimisation
  • Security Headers & SSL
"After 15 years of audits, I'm building the tool I wish I had. It will catch issues like zero AI traffic despite good Google rankings, and oversized images that slow mobile sites to a crawl."

Launching 1st November 2025

Client Success Stories

Measurable outcomes that matter to business growth. See how data-driven development delivers faster sites, better rankings, and more conversions.

Sian Jane Photography - A custom-built photography portfolio that loads instantly, stands out in search results, and turns browsers into bookings
Featured Project

Sian Jane Photography

A luxury wedding photographer with stunning work but an invisible online presence. We built a site optimised to rank locally, display rich search results, and load instantly on mobile—where engaged couples actually browse photographers.

  • Site loads in under 1 second on mobile—couples see her work immediately
  • Structured for Google rich results—5-star reviews, pricing, location display
  • Custom design reflecting 17 years of high-end wedding photography

Frequently Asked Questions

Everything you need to know about Numen Technology. Can't find the answer you're looking for? Get in touch.

We build websites and stick around to help them grow. Most agencies disappear after launch - we don't. We offer Discovery & Strategy (working out what to build and why), Development (building it with Next.js, React, and TypeScript), Growth & Marketing (technical SEO and conversion optimisation), and Support & Evolution (monthly reviews and improvements based on what's actually working). If you're a UK business that wants a proper partnership rather than a one-off project, let's talk.

We stick around after launch. Most agencies build something, hand it over, then vanish. We treat your project like it's our own - if it doesn't grow, we've failed. Every decision gets backed by data, not gut feel. Before writing a single line of code, we work out what success actually looks like - conversion rates, customer acquisition costs, the metrics that matter. Then we measure and improve monthly. It's a partnership, not a transaction.

Sites that load in under a second. Proper SEO optimisation for Google and AI search engines like ChatGPT and Perplexity. Monthly improvements based on actual user behaviour, not guesswork. We set success metrics upfront, then track and improve them. Every technical decision ties back to a business outcome you care about - more leads, more sales, lower acquisition costs. If we can't measure it, we don't do it.

Absolutely. Whether you're a solo founder or running an established company, if you're serious about growth and making decisions based on data rather than hope, we'll work well together. We keep our client roster deliberately small so we can give each project proper attention. Book a free strategy session and we'll figure out if it's a good fit.

Next.js, React, and TypeScript for front-end. Tailwind CSS for styling. Node.js and serverless for back-end when needed. PostgreSQL or cloud databases depending on requirements. We pick technologies based on your specific needs and performance goals, not whatever's trendy. Same rigorous 2025 web standards we're building into GuardianScan - our website audit tool launching November 2025.

Depends entirely on what you're trying to achieve. Rather than throwing out numbers that might not fit your situation, we prefer to understand your goals first. During a free strategy session, we'll discuss your objectives, timeline, and budget, then tell you straight whether it's feasible and what trade-offs you might face. Some projects deliver strong ROI under £10,000. Others need £30,000+ to hit their growth targets. We only take on projects where we're confident we can deliver real value for your investment.

Depends on project scope and how quickly we can make decisions together. A focused marketing website typically takes 6-8 weeks. Custom web applications run 10-14 weeks. Complex SaaS products often need 12-16 weeks or more. We work with a limited number of clients at a time to maintain quality, so timelines also depend on current commitments. During our strategy session, we'll give you a realistic timeline based on your requirements and our availability.

Not always, but it usually saves money and headaches. If you're crystal clear on requirements and have validated your assumptions, we can jump straight to building. But if there's any uncertainty about what to build, how to prioritise features, or what success looks like - discovery is worth it. We've seen too many projects waste budget building the wrong things. A focused discovery phase validates assumptions, sets metrics, and creates a realistic roadmap before committing to full development. We'll assess together whether it makes sense for your project.

Get in Touch

Let's discuss what will actually grow your business. Free strategic consultation—no sales pitch, just actionable insights.