Senior Full-Stack Web Developer / Arturas Salivonas

I build platforms that rank, convert and run themselves.

10+ years building websites, booking and payment systems and internal tools that save companies money and staff hours. Right now the sole developer for a multi-site private clinic group.

Email me
BUILDfull-stack - wordpress - paymentsRANKtechnical seo - e-e-a-tAUTOMATEapis - internal tools

// where the three meet is where I work

What I do

One person. The whole system.

Six disciplines that usually need six specialists. I cover all of them, so nothing gets lost in the hand-offs.

01

Front-End & Full-Stack

Fast, clean interfaces and the APIs behind them.

  • React, Next.js, SvelteKit
  • Node.js, PHP, SQL
  • Accessibility & animation
02

WordPress, Done Right

My favourite CMS - built properly it is fast, secure and easy for the whole team.

  • Custom plugin architecture
  • Theme systems & Gutenberg
  • REST APIs & headless
03

Technical SEO & E-E-A-T

SEO treated as engineering, plus the trust signals Google actually reads.

  • Structured data & schema
  • Core Web Vitals
  • GA4, GTM & Search Console
04

Ecommerce & Payments

Checkouts that fit the business instead of fighting it.

  • Stripe & Worldpay integrations
  • Custom shop plugins
  • Subscriptions, deposits & invoicing
05

Automation, Bots & AI

I replace the workflow that eats someone's afternoon with software.

  • API integrations - Semble.io, HubSpot, 8x8
  • Booking & scheduling systems
  • Chrome extensions & AI workflows
06

Security & Hosting

Sites that stay up and do not get hacked. Boring on purpose.

  • Cloudflare & bot protection
  • Linux, Vercel, AWS, Azure
  • Backups that actually restore

One person

You talk to the person who builds it.

Experience

Ten years. Seven companies. Real results.

Open any role for the problem, what I built and what changed.

  1. Mar 2026 - Now

    Full-Stack Developer at London Gynaecology

    Website, booking, payments, analytics and internal tools for a multi-site private clinic group. Sole developer

    The problem

    • Booking, payments and admin leaned on manual work and off-the-shelf plugins.
    • No single view of spend, bookings and revenue - and broken GA4 conversion tracking.

    What I built

    • Online booking with Worldpay payments and Semble integration.
    • A custom shop for self-test kits, linked to the lab and CRM.
    • An analytics dashboard, plus tools for rotas, QA logs, debt chasing and safeguarding.

    The result

    • Spend, bookings and revenue in one place.
    • Hours of staff admin saved every week.
    • Working conversion tracking for ad decisions.
    WordPressPHPJavaScriptWorldpaySemble APIHubSpot
    Remote, UK Visit London Gynaecology site (opens in a new tab)
  2. Feb 2025 - Mar 2026

    Front-End Developer at Two Circles Studio

    Client sites, a drag-and-drop page builder and Chrome extensions. Page builder + extensions

    The problem

    • Marketing teams had to wait for a developer to launch every page.

    What I built

    • A drag-and-drop page builder for marketing teams.
    • Chrome extensions, real-time crypto dashboards and trading bots.
    • Speed, SEO and UX work across WordPress, Umbraco and Shopify sites.

    The result

    • Marketing ships new pages without a developer.
    JavaScriptWordPressUmbracoShopifyChrome MV3
    Remote, UK Visit Two Circles Studio site (opens in a new tab)
  3. May 2024 - Feb 2025

    Web Developer at Tyk.io

    Rebuilt the marketing site for an API-management company. Core Web Vitals 27 to 90

    The problem

    • The marketing site was failing Core Web Vitals, with a 2.86s load.

    What I built

    • A rebuilt WordPress theme, with CI/CD introduced.
    • Security hardening against XSS and SQL injection.
    • Clean GA4, GTM and Contentsquare tracking.

    The result

    • Mobile Core Web Vitals from 27 to 90.
    • Load time from 2.86s to 340ms.
    WordPressPHPJavaScriptCI/CDGA4 / GTM
    Remote, UK Visit Tyk.io site (opens in a new tab)
  4. Mar 2020 - Dec 2023

    Front-End Developer at Philip Morris International

    An internal platform that let non-developers create and ship digital assets. ~£4M saved a year

    The problem

    • Shipping one digital asset took about 7 days and 8 external vendors.

    What I built

    • An internal platform so non-developers create and ship assets themselves.
    • Led the company's AI intranet chatbot.
    • Front-end standards and mentoring across teams.

    The result

    • Delivery from 7 days to 2.
    • Vendors from 8 to 2.
    • Around £4M saved a year.
    JavaScriptFront-end architectureInternal toolsAI chatbot
    London, UK Visit Philip Morris International site (opens in a new tab)
  5. May 2016 - Mar 2020

    Earlier roles at Vista, Ascential & GlobalData

    Front-end and UI/UX work for cinema platforms, global events brands and corporate sites. Cinema, events & media

    What I built

    • Vista Entertainment - reusable React components and A/B-tested layouts for cinema platforms.
    • Ascential - websites, landing pages and email templates for global events brands.
    • GlobalData - UI/UX and ecommerce on WordPress, Drupal and Shopify.
    ReactWordPressDrupalShopify
    London, UK

Own projects

I don't just build platforms. I run them.

Three live projects of my own - every code, SEO and revenue decision is mine to live with.

TreatmentCosts screenshot Own project

TreatmentCosts

treatmentcosts.co.uk

UK private treatment price comparison, with verified reviews and clinic dashboards.

WordPress - Stripe - Reviews

(opens in a new tab)
OnlyDogFood screenshot Own project

OnlyDogFood

onlydogfood.com

UK dog food ratings with a published scoring algorithm.

WordPress - Scoring engine

(opens in a new tab)
FilmingMap screenshot Own project

FilmingMap

filmingmap.com

An interactive globe of real filming locations, kept fast despite the heavy map.

WordPress - Maps - CWV

(opens in a new tab)

Sites I've shipped

Clinics, SaaS, enterprise and media.

London Gynaecology website screenshot London Gynaecology Healthcare (opens in a new tab)
Philip Morris Int. website screenshot Philip Morris Int. Enterprise (opens in a new tab)
Tyk.io website screenshot Tyk.io SaaS (opens in a new tab)
Two Circles Studio website screenshot Two Circles Studio Agency (opens in a new tab)
Odeon website screenshot Odeon Cinema (opens in a new tab)
Money20/20 website screenshot Money20/20 Events (opens in a new tab)
Cannes Lions website screenshot Cannes Lions Events (opens in a new tab)
New Statesman website screenshot New Statesman Editorial (opens in a new tab)

Also: GlobalData - Elite Traveler - Press Gazette - The Samling - Verdict and more.

Medical & regulated

Healthcare work is different. I build for that.

Clinics and health platforms live with regulation, patient trust and real consequences. My medical work runs in production today.

Patient systems

Booking, deposits and intake on clinical APIs, with identity checks before any patient data shows.

E-E-A-T for medical content

Author entities, clinician review and medical schema - the trust signals Google reads.

Data discipline

PII gates, GDPR-aware forms and least-privilege integrations.

In production for London Gynaecology and TreatmentCosts - private clinic tooling, patient booking, clinical content.

Automation & internal tools

Software that gives people their time back.

I sit with the team, find the workflow that wastes their afternoon, and replace it. Understanding the business need comes first - the code is the easy part. Recent builds:

  • booking-engine: patients self-book and pay - Worldpay + Semble.io
  • insight: GA4 + Search Console + calls + Semble in one dashboard
  • rota-builder: a whole clinic team, 4 sites, one drag-and-drop rota
  • debt-chaser: overdue invoices on one chasing board
  • page-builder: marketing launches pages without a developer
  • plugs-into: Semble.io - HubSpot - Stripe - Worldpay - Cloudflare - GA4 - AI APIs

Stack

The toolkit behind the results.

Languages JavaScriptTypeScriptPHPSQL
Frameworks ReactNext.jsSvelteKitNode.js
CMS WordPressShopifyUmbracoDrupal
Payments & APIs StripeWorldpayHubSpotSembleGraphQL
SEO & analytics Core Web VitalsStructured dataGA4GTM
Infrastructure CloudflareLinuxVercelAWSGit CI/CD

Spoken English (fluent), Lithuanian (native), Russian (native), Polish (basic)

Hiring?

Open to senior full-stack roles.

Based in Bournemouth, UK and remote first. Ten years across agencies, SaaS and enterprise.

GitHub (opens in a new tab)LinkedIn (opens in a new tab)

Got a project?

Freelance and contract work.

Tell me the business problem and I will tell you honestly what it takes.

Website builds & rebuildsBooking & paymentsSpeed & technical SEOInternal tools & automation

I usually reply the same day.