Web Development in London, USA

Web Development in London, USA — Web development that converts London users into customers

Today, having production-grade websites and web applications isn't enough for a London business. Your potential client opens a smartphone on the Victoria line, sees three or four similar offers, and decides in 5 seconds which one to engage. If yours is slow, unclear on mobile, or doesn't render correctly under iOS Safari with intermittent the Tube connectivity — you've lost that customer before they finished reading your headline. That's why investing in quality Web development isn't a "luxury expense", it's a direct investment in revenue.

I'm Alex Filiuk, a Senior practitioner with 15 years of experience and a portfolio of 130+ projects. I deliver production-grade websites and web applications for businesses in London, across the US (San Francisco, LA, Boston, Austin), in Europe (London, Manchester, Edinburgh), and in Ukraine. On this page I've collected what's worth knowing for an London business owner before commissioning web development: how the engagement works, USD pricing brackets, which mistakes destroy ROI, and which 2025-2026 trends actually matter for the London market.

Why web development matters for London businesses

London users have the highest baseline expectations for site performance in the US. Subway-commuter mobile traffic with intermittent 4G/5G connectivity, sophisticated audiences trained by Apple, Stripe, and Linear, and competitor sites running on Vercel / Cloudflare edge with sub-1.5s LCP — all set the bar. A site that takes 4+ seconds to render in the City of London loses 30–50% of organic and paid-traffic conversion before any UX issue is even seen. Production-grade web development in 2025 is a specialty: framework choice, edge deployment, image and font optimization, accessibility, observability, security.

What quality web development delivers for an London business:

• Sub-1.8s LCP from London. Edge deployment on Vercel / Cloudflare / Netlify means fast renders for London users — direct conversion-rate impact.
• Lighthouse 90+ across all metrics. Performance, accessibility, best-practices, SEO — all green by default, not 'we'll fix later'.
• Modern stack with long support horizon. Next.js 15 / Remix / Astro / SvelteKit — frameworks with multi-year support, not yesterday's hot stack.
• Headless CMS where it earns its keep. Sanity / Contentful / Storyblok / Payload — content team independence without engineering bottleneck.
• Production observability. Sentry, Datadog RUM, Vercel Analytics — issues caught and triaged before users complain.

Web development vs the templated approach

Naive web development is 'pick WordPress, install a theme, add some plugins'. That's still a 2014-era approach producing slow, insecure, unmaintainable sites. Modern production-grade web development is a discipline of framework selection, edge architecture, type-safety, observability, and security — distinct from CMS templating.

A real London-grade web-development engagement covers:

• Framework decision. Next.js for product / marketing / app-like, Astro for content-heavy / fast static, Remix for data-heavy app surfaces — chosen against the use case.
• Edge deployment. Vercel / Cloudflare / Netlify with proper caching, ISR, edge functions — sub-1.8s LCP from London.
• Type-safe codebase. TypeScript end-to-end, Zod / Valibot for schema validation, tRPC / GraphQL Code Generator for type-safe data fetching.
• Accessibility built in. WCAG 2.2 AA, ADA-compliant, keyboard-navigable, screen-reader-tested — required by NY State law.
• Security and compliance. CSP, security headers, secret management, SOC 2 / FCA and PRA regulations readiness as appropriate.

Web development pairs naturally with UI/UX design when both phases run as a coordinated team — eliminating the design-to-build handoff loss that's the biggest source of cost overrun in agency projects.

Project types most-requested by London clients

Across 15 years and 130+ projects, I've noticed London business categories have their own digital signature. Most-common requests for web development:

• B2B SaaS marketing sites and product surfaces. Shoreditch / Mayfair / Soho SaaS founders building marketing-site + in-product UI on Next.js / Remix.
• DTC e-commerce headless. Hackney / King's Cross brands moving from Shopify theme to headless on Hydrogen / Next.js Commerce / Sanity.
• Content-heavy publishing. the City of London publishers / creators building Astro / Next.js sites with Sanity / Contentful / Storyblok.
• Real-estate and proptech. the City of London / Shoreditch brokerages building listing platforms with Mapbox / Mapillary integration.
• Fintech and regtech marketing. Shoreditch / City of London fintechs building compliant marketing surfaces with KYC / disclosure baked in.
• Event and conference sites. City-based conferences (NY Tech Week, fashion week, ad week) needing high-traffic edge-deployed sites.

Different category, different approach — so I don't ship templates. Every engagement starts with discovery against your actual London market context.

The web development engagement, step by step

I work via a transparent process that 130+ clients have completed end-to-end. Each phase has a fixed deliverable that you receive in your hands. No "wait a month while I design" — you know what's happening every week, with weekly Slack updates and one Zoom sync at 8am London / 3pm Kyiv.

1. Architecture decision (week 1–2). Framework, hosting, CMS, data layer, integration map — chosen against the use case.
2. Setup and scaffolding (week 2). Repo structure, CI/CD (Vercel / Cloudflare / GitHub Actions), code-style and lint, type-safety, env management.
3. Design-system implementation (week 2–4). Tokens, components, Storybook (or equivalent), accessibility primitives.
4. Page and feature build (week 4–10). Iterative sprint-based build, with weekly demos and stakeholder review.
5. CMS integration and content modeling (week 4–8). Sanity / Contentful / Storyblok / Payload schemas, content-team training, preview workflow.
6. QA and pre-launch (week 10–12). Cross-browser, cross-device QA, performance optimization (LCP < 1.8s), accessibility audit, security review.
7. Launch and stabilization (week 12+). Phased rollout, observability dashboards, on-call runbook, post-launch fix sprints.

What you receive when the web development project completes

• Architecture document: framework, hosting, CMS, data layer, integration map, deployment topology.
• Production codebase: Next.js / Remix / Astro / SvelteKit with TypeScript, Tailwind, full type-safety end-to-end.
• Design system implemented: tokens, components, Storybook, accessibility primitives.
• CMS configuration: Sanity / Contentful / Storyblok / Payload schemas, preview environment, content-team training docs.
• CI/CD pipeline: Vercel / Cloudflare / GitHub Actions, automated tests, preview deployments, signed releases.
• Performance benchmarks: Lighthouse 90+ across all metrics, LCP < 1.8s from London, CLS < 0.1.
• Accessibility audit: WCAG 2.2 AA, ADA-compliant, keyboard / screen-reader tested.
• Operations runbook: on-call procedures, common-issues playbook, rollback / hotfix protocol.

Why hire a Ukraine-based Senior instead of an London agency

London has a deep pool of talent — and rates that match. A typical Senior at a the City of London agency: $180–280/hour. A 12-week engagement at a respectable Shoreditch studio: $80,000–180,000. The work is excellent, but the cost makes it inaccessible for most early-stage startups, mid-sized DTC brands, and bootstrapped B2B SaaS companies.

The remote Ukraine-Senior model gives you:

• 30–60% cost reduction. Same Senior expertise, same deliverables, transparent fixed-fee USD pricing.
• Single point of contact. No account manager, no project coordinator, no creative director "stepping in" mid-call. You talk directly with the person doing the work.
• Async-friendly cadence. The 7-hour gap (London EST → Kyiv) is a feature: I work while you sleep, you wake up to demos and questions in Slack, we sync 1× per week on Zoom.
• Production-grade quality. Same modern stack (Next.js, React, TypeScript, Tailwind), same accessibility (WCAG 2.2 AA, ADA-compliant), same handoff specs as a top-tier London agency.
• Transparent fixed pricing. No hourly invoices, no scope-creep surprises. You know the total before we start.

USD pricing model

All projects are quoted as fixed fee in USD, paid 50% upfront / 50% on delivery (or split into milestones for projects > $20K). No hourly invoices. If scope changes mid-project — we re-quote, you approve in writing, and the change is added with a clear delta.

Indicative ranges to set expectations (every quote is bespoke, but these brackets are realistic):

• UI/UX design — landing or simple website (4-6 weeks). $8,000–18,000. London agency equivalent: $30,000–80,000.
• Corporate website — full design + dev (8-12 weeks). $20,000–45,000. London agency equivalent: $80,000–250,000.
• B2B SaaS / web app — design + frontend + backend (16-28 weeks). $50,000–180,000.
• UX audit (2-3 weeks). $4,000–9,000.
• Branding — full identity system (8-12 weeks). $12,000–30,000.
• SEO retainer (3-6 months minimum). $2,500–6,000/month.
• Fractional CPO / consulting (15-20 hrs/month, 6+ months). $4,000–8,000/month.

Discounts apply when you bundle services (e.g. design + development + SEO together) — typically 15-25% vs. ordering each separately.

How the async workflow handles the timezone gap

The 7-hour difference between London (EST/EDT) and Kyiv (EET/EEST) is the biggest concern most London clients raise — and it's the easiest to solve. The honest answer: most London startup founders and product teams already work async with Slack-first cadence. The remote-Ukraine engagement just formalises what's already happening internally.

• Daily Slack handoff. When you wake up at 8am London time, I've already worked 8 hours. There's a thread in #project with the day's progress, demo link (Figma / Vercel preview), and 2-3 specific questions that need your call. You answer over coffee — by 4pm London time I'm already incorporating your feedback.
• Weekly Zoom sync. One 60-90 minute call per week, scheduled at 8am London / 3pm Kyiv. We walk through what shipped, what's next, what's blocked.
• Loom for async demos. Instead of scheduling a meeting to "show you what I built", I record a 5-10 minute walkthrough.
• Notion / Linear for tracking. Whatever you use, I'll join. No new tool to learn.
• Emergency Zoom on demand. Critical decisions get a 15-minute Zoom call within 4 hours of request, regardless of timezone.

Cases — London and US clients in my portfolio

My portfolio contains 130+ projects, including B2B SaaS for US founders, DTC brand sites for London and LA-based companies, and fintech dashboards for clients on the East Coast. For NDA reasons I can't list every client publicly — but on the discovery call I'll walk you through 5-10 most-relevant cases for your specific niche.

Other services for London businesses

• UI/UX design
• Web development
• Mobile app design
• Mobile app development
• Branding and logo design
• E-commerce
• CRM / ERP / SaaS
• SEO, Google Ads, SMM, email marketing
• UX audit, CRO
• Business consulting, product strategy

Other US and EU cities I serve

• Los Angeles — entertainment, creative agencies, e-commerce
• San Francisco / Bay Area — B2B SaaS, deep-tech, AI
• Boston — biotech, ed-tech, university spinoffs
• Austin — startups, gaming, tech
• London — fintech, B2B SaaS, creative
• Manchester — northern tech hub, sport-tech, MediaCity
• Edinburgh — fintech, ed-tech, data science

Full list of locations on the "Service Areas" page.

Ready to discuss your London project?

Fill out the contact form or message me through the channels in the footer. The first 60-90 minute call is free — we'll discuss your business, product goals, indicative scope, USD budget range, and timeline. If you have an existing site / app, I'll do a quick express-review and show you 3-5 issues that can be fixed in the first week, even before signing a full engagement.

Common mistakes London businesses make commissioning web development

• Hiring on hourly rate. A $25/hour practitioner in Eastern Europe is statistically a junior at best. The 30-60% cost gap with London agencies isn't from hourly rate — it's from removing layered agency overhead.
• Skipping the discovery phase to "save money". A 1-2 week paid discovery is the cheapest insurance against a $50K mistake.
• Not asking about IP and ownership. Get this in writing before kickoff.
• Underestimating the value of single-contact engagement. Talking directly to the person building your product cuts requirement-translation losses by ~40%.
• Treating web development as a one-off project. The strongest results come from continuous iteration, not handoff-and-forget.

2025-2026 trends I apply on London client web development projects

• Edge-first deployment via Vercel and CloudFront for sub-100ms response from London users
• Server Components by default, Client Components only where needed (smaller bundles)
• Streaming SSR for instant first paint
• Type-safe APIs with tRPC or proper OpenAPI
• PCI-compliant payment flows for fintech
• ADA / Section 508 compliance baked into the build
• Privacy-first analytics with proper consent flows