Hire the Best Stripe Developers
in the United Kingdom

I build and fix complex WordPress systems from the ground up — no page builders, no bloat, no guessing. My background is 7+ years in aerospace engineering, where the standard is correct first time. I bring that standard to web development. If something is worth building, it should be built properly, documented clearly, and work reliably. What I specialise in: — Stripe payment integrations and WooCommerce builds (custom, not template-stitched) — Core Web Vitals remediation — my builds score LCP under 2.5s on mobile, including image-heavy inventory sites — Custom booking and reservation flows that eliminate third-party commission fees — Search bars and filters for your website. — Emergency fixes: broken checkouts, crashed booking calendars, plugin conflicts — I design in Figma and build what I design. No handoff gap between design and implementation. I work in two modes: 1) As a white-label technical partner for design and marketing agencies, and as 2) A direct technical resource for business owners with site problems costing them revenue. I don't do: open-ended redesigns with no brief, or projects scoped to a price rather than an outcome. If you have a specific technical problem and need it solved properly, let's talk.

I am a Senior Software Engineer with over 12 years of experience specializing in high-scale, resilient systems. My career is defined by taking full ownership of complex technical challenges, from designing high-concurrency backend services to architecting modern, modular frontends. I have a proven track record of delivering value in both high-growth startups and large-scale multinationals like Cisco, Skyscanner, and Kindred Group. Technical Focus - Backend & Systems: Expert in the Java ecosystem (Spring Boot, Reactive Spring, Hibernate, Security). I also specialize in building high-concurrency services using Go (Golang) for real-time event processing and Node.js for secure API layers. - Frontend Architecture: Core expertise in React, Redux, and Next.js using TypeScript. I focus on Micro Frontend architectures to create reusable, modular components that improve performance across large applications. - Infrastructure & DevOps: Deeply experienced in AWS (EKS, Lambda, S3, RDS). I manage container orchestration via Kubernetes and ArgoCD, and I design robust CI/CD pipelines using GitHub Actions and AWS CodePipeline. - Data & AI: Experienced with PostgreSQL, MySQL, and DynamoDB (utilizing Global Tables for cross-region replication). I have hands-on experience integrating Generative AI/LLMs into production backend workflows via gRPC and REST. Key Professional Impact - Payments Specialist: Managed end-to-end payment lifecycles using Stripe Connect, implementing secure subscriptions and 3DS authentication to mitigate fraud and ensure seamless user experiences. - At Cisco ThousandEyes: Developed high-scale backend systems utilizing Java, Spring Boot, and Kafka to handle massive data streams. - At Skyscanner: Integrated Generative AI for traveler search, managed EKS cluster migrations, and built a secure, cross-region Payment Gateway platform using Java, Dropwizard, and DynamoDB. - At Kindred Group: Designed a Micro Frontend architecture that unified style components across multiple applications, significantly improving loading performance. - Specialized Projects: Built an asynchronous IoT testing service in Go handling millions of WebSocket events and managed complex payment lifecycles using Stripe Connect. I prioritize building for long-term maintainability and performance. If you need an engineer who can bridge the gap between complex backend logic, scalable infrastructure, and a seamless frontend experience, let’s talk.

Most GoHighLevel and HubSpot systems are built to function, not to convert. Leads fall through the cracks, follow-ups stop too early, attribution breaks, and sales opportunities get lost. I help agencies, real estate professionals, coaches, consultants, healthcare businesses, roofing companies, and service-based businesses build high-performing HubSpot & GoHighLevel CRM systems that automate lead management, appointment booking, customer follow-up, sales pipelines, lead nurturing, and marketing operations from first touchpoint to closed client. My approach goes beyond basic workflow setup. I build scalable, conversion-focused HubSpot/GoHighLevel infrastructures designed to improve lead response speed, streamline operations, eliminate manual tasks, optimize customer journeys, and create reliable automation systems businesses can actually scale with. Core GoHighLevel Services CRM Automation & Workflow Systems ✅ GoHighLevel CRM Setup & Optimization ✅ Workflow Automation & Workflow Logic ✅ Automation Audits, Troubleshooting & Cleanup ✅ Pipeline Management & Opportunity Tracking ✅ Lead Routing & Contact Segmentation ✅ Tags, Smart Lists & Custom Fields ✅ Customer Journey Automation ✅ CRM Cleanup & System Organization ✅ Dynamic Automations & Conditional Logic ✅ Trigger Setup & Workflow Branching ✅ Multi-Location CRM Systems ✅ Sub-Account Setup & SaaS Mode ✅ Snapshot Creation & Cloneable Systems Hubspot CRM Implementation & Automation ✅ Full HubSpot CRM setup and onboarding ✅ HubSpot CRM architecture and data structuring ✅ Custom HubSpot sales pipeline setup and deal automation ✅ Advanced HubSpot lifecycle stage mapping and lead management ✅ HubSpot contact segmentation and list building ✅ HubSpot CRM migration ✅ HubSpot to GoHighLevel CRM Migration Specialist AI Automations & Advanced Integrations ✅ AI Chatbots & AI Assistants ✅ AI Voice Agent Integrations ✅ AI Lead Qualification Systems ✅ AI Booking Automation ✅ OpenAI / ChatGPT Integrations ✅ Vapi AI & Retell AI Setup ✅ Zapier & Make Automations ✅ API & Webhook Integrations ✅ Stripe Integrations ✅ Twilio SMS Infrastructure ✅ WooCommerce Integrations ✅ Facebook Lead Form Integrations ✅ Google Ads & Meta Ads Integrations Funnels, Follow-Up & Lead Generation ✅ Funnel Design & Funnel Optimization ✅ High-Converting Landing Pages ✅ Lead Capture Systems ✅ Appointment Booking Workflows ✅ Automated Follow-Up Campaigns ✅ Lead Nurturing Sequences ✅ Email & SMS Automation ✅ Missed Call Text Back Systems ✅ Reactivation Campaigns ✅ Review & Reputation Automation ✅ Client Onboarding Workflows ✅ Customer Retention Systems Technical Configuration & Deliverability ✅ A2P 10DLC Registration ✅ SMTP, SPF, DKIM & DMARC Configuration ✅ Email Deliverability Optimization ✅ Domain & DNS Setup ✅ CRM Migration & System Architecture ✅ WordPress Integrations & Website Design Industries I Commonly Work With ✅ Marketing Agencies ✅ Roofing Companies ✅ Real Estate Professionals & Realtors ✅ Healthcare & Mental Health Practices ✅ Coaches & Consultants ✅ Med Spas & Clinics ✅ Ecommerce Businesses ✅ Local Service Businesses ✅ Appointment-Based Businesses ✅ Commercial Real Estate Why Businesses Hire Me ✅ Conversion-focused automation systems ✅ Advanced understanding of workflows, APIs & integrations ✅ Reliable communication & fast implementation ✅ Full workflow testing before delivery ✅ Long-term optimization and support Key Skills: GoHighLevel Automation Expert | GoHighLevel Sales Funnel Expert | GoHighLevel (GHL) Subaccount Setup | GoHighLevel Website Design | GoHighLevel Landing Page Design | GoHighLevel Sales Funnel Creation | GoHighLevel Automation | GoHighLevel SaaS Configuration | GoHighLevel Email Marketing | GoHighLevel Calendar Setup | GoHighLevel Appointment and Opportunity Management | GoHighLevel Integrations | GoHighLevel Workflow Design | GoHighLevel Snapshot Creation and Setup | GoHighLevel Email Configuration | GoHighLevel Community Setup | GoHighLevel Membership Setup | GoHighLevel Store Design | GoHighLevel CRM Automation | GoHighLevel CRM Software | GoHighLevel Email Automation | GoHighLevel Email Campaign Setup | GHL AI Agents | GoHighLevel Expert | GoHighLevel Funnel | GHL Website | GoHighLevel SEO | Klaviyo Email Marketing | Email Automation | Email List Segmentation | Email List Growth | Email Marketing Strategy | Email Deliverability | Email Marketing Analysis | Email Marketing Consulting | Email Marketing Optimization | Email Marketing Automation Tools | Email Marketing Software | Email Marketing ROI | Email Marketing Metrics | Email Marketing Analytics | Email Marketing Copywriting | Email Marketing Design | Email Marketing Performance | Mailchimp | ActiveCampaign | Omnisend | Klaviyo | HubSpot | Email Automation | Email & Newsletter | Email Campaign Setup | Email Copywriting | Email Campaign | Email Campaign Optimization | Email Marketing | Email Management | Email Marketing Strategy | Shopify Marketing | Email Design | Audience Segmentation & Targeting

𝟓+ 𝐲𝐞𝐚𝐫𝐬 | 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 | 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯 (𝐒𝐚𝐚𝐒, 𝐀𝐈, 𝐁𝐢𝐥𝐥𝐢𝐧𝐠) I build scalable SaaS apps and complex backend systems, with a strong focus on Stripe billing (subscriptions, metered usage, webhooks) and real-world integrations that need to be reliable. 𝐖𝐡𝐚𝐭 𝐈 𝐰𝐨𝐫𝐤 𝐨𝐧 • Full-stack apps using Next.js and Node.js • SaaS platforms and internal tools • AI integrations like chatbots and workflows • Payment systems including subscriptions and usage-based billing • E-signature flows and document systems 𝐑𝐞𝐜𝐞𝐧𝐭 𝐟𝐨𝐜𝐮𝐬 • Built and handled complex billing logic using Stripe (subscriptions, schedules, invoices, metered usage, webhooks, edge cases) • Worked on e-signature systems using ApiSign • Structured backend modules for better scalability and separation • Handled real-world edge cases and production issues 𝐓𝐞𝐜𝐡 𝐬𝐭𝐚𝐜𝐤 • Frontend: Next.js, React, TypeScript, Tailwind • Backend: Node.js, Express • Database: PostgreSQL, MongoDB • ORM: Drizzle ORM • Security: RLS (Row-Level Security) • Integrations: OpenAI, Stripe, REST APIs 𝐇𝐨𝐰 𝐈 𝐰𝐨𝐫𝐤 • I keep things simple and clear • I don’t over-engineer, but I don’t cut corners either • Comfortable working solo or with a team 𝐖𝐡𝐚𝐭 𝐦𝐚𝐭𝐭𝐞𝐫𝐬 𝐭𝐨 𝐦𝐞 • Performance (fast apps) • Stability (things don’t randomly break) • Clean UX without unnecessary complexity 𝐋𝐞𝐭’𝐬 𝐜𝐨𝐧𝐧𝐞𝐜𝐭 If you’re building something or improving an existing system, feel free to reach out. Portfolio: hemn.vercel.app

When you work with me, you keep full ownership of everything. As a full stack developer I own the entire stack — PostgreSQL design, Node.js and Nest.js backend, React and Next.js frontend, REST API integrations, Stripe payments, and Vercel deployment. Need a full stack developer, SaaS developer, or dashboard developer who owns the technical side — architecture, payments, integrations, deployment, security? Let's talk. I am a full stack developer, SaaS developer, and dashboard developer in the UK — Top Rated Plus on Upwork, top 3% globally. I build systems that run businesses — working platforms with real users, real transactions, and business impact. My recent full stack developer work includes a SaaS platform for trades businesses — a Next.js app with job management, client records, quoting, and role-based access. I also built a B2B admin dashboard across PostgreSQL, Node.js, and React — the tool a team of 20 depends on every day. SaaS developer. Multi-tenant. Production-ready. As a SaaS developer I delivered a multi-tenant SaaS starter on Next.js with Stripe subscriptions, PostgreSQL via Neon, role-based access, billing portal, and team invites — fully documented, repo transferred on handover. I led a full platform rebuild migrating a legacy PHP and WordPress stack to a modern Next.js and Nest.js architecture — 40% improvement in user engagement post-launch. Backend developer. Nest.js. PostgreSQL. As a backend developer I build production Nest.js and Node.js APIs on PostgreSQL with TypeScript end to end. My recent backend work includes a Nest.js and PostgreSQL backend for a raffle SaaS platform — secure JWT authentication, OAuth provider integration, password reset and recovery flows, and a clean REST API layer for a Next.js and React frontend. Backend work that has to be correct: every endpoint authenticated, every role enforced, every PostgreSQL query written with isolation in mind. Security audit. Supabase RLS. Multi-tenant isolation. As a full stack developer and technical consultant I run pre-launch security audits for SaaS founders — the review that must happen before real customer data goes live. My security audit work covers Supabase Row Level Security (RLS), multi-tenant isolation, PostgreSQL policy design, and authentication flows. I've audited a multi-tenant property maintenance SaaS on Supabase, reviewing RLS policies and tenant data separation. On another platform I found RLS policies that lived only in discarded migrations, never applied to the database — the silent multi-tenant data leak an audit catches before a breach. If you're a SaaS founder on Supabase, Next.js, or PostgreSQL and aren't certain your tenant data is isolated, that's the audit I do. Dashboard developer. Data that changes decisions. As a dashboard developer with a KendoReact commercial licence I build enterprise-grade interfaces standard React developers can't replicate — advanced data grids, real-time charts, and complex forms that perform under load. My dashboard developer portfolio includes a marketing analytics dashboard with AI insights that cut campaign review time by 60% for a British agency, and a SaaS analytics dashboard with Chart.js and PDF export that replaced a weekly manual reporting process. Integrations. Authentication. Infrastructure. OAuth integration and API authentication developer portal config — credential flows for Google, GitHub, and custom providers using NextAuth, Nest.js, and JWT. Google Tag Manager setup with GA4 and Meta Pixel across complex Next.js applications, with GTM as the management layer for non-technical teams. Transactional email wired to Resend and Brevo, plus Next.js blog and CMS setup with Sanity Studio. Stripe. Payments. Automation. Payment systems are a core part of my full stack developer work. I built a Stripe internal payment interface with role-based access on Next.js — PaymentIntent flow, full audit log, zero card data stored. I delivered Stripe payment integration with webhooks and subscription billing handling upgrades, downgrades, and failed payment recovery. I wire Stripe with Make, GoHighLevel, and Google Sheets so every transaction triggers the right email, CRM tag, and notification. Technical consultant. Architecture. Audit. I work as a technical consultant for non-technical founders. My tech stack and architecture audit with written report shows founders what they have, what's broken, and what to build next — vendor selection, architecture decisions, developer estimate review, security and multi-tenant isolation review, and a roadmap. As a Next.js performance optimization specialist I audit and improve Lighthouse and PageSpeed results — render-blocking resources, Core Web Vitals, and measurable gains for user experience and search ranking. Next.js · React · Node.js · Nest.js · PostgreSQL · Supabase · TypeScript · JavaScript · REST API · Stripe · Kendo UI · Sanity · Make · GoHighLevel · Vercel · NextAuth · JWT · OAuth · RLS · Chart.js · GA4 · Meta

I'm an all full stack web developer with over 20 years experience of coding, designing, scaling, hosting and managing an international online marketplace and FCA approved payments company that handles third party trades worth millions every year. I worked with and controlled all aspects of the website from day one and managed a small team in that time overseeing the stability, growth and speed of the site together with always adding new functionality day in day out, fighting fires when need be and being adaptable to any of the thousands of problems that can be thrown at you every day when running a large web platform. I was also lead developer on a startup UK Based FCA approved e-Money Provider from 2010 to 2018 which provided person to person payments for the UK, US and EU. The platform required high security and integration into multiple back end payment platforms in multiple countries. I now design, build and scale web and mobile apps under my company GasDigital.