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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

𝗦𝘁𝗿𝗶𝗽𝗲 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗲𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 with over 𝟱 𝘆𝗲𝗮𝗿𝘀 of expertise in 𝘀𝘂𝗯𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻 𝗺𝗼𝗱𝗲𝗹𝘀 𝗮𝗻𝗱 𝗺𝗮𝗿𝗸𝗲𝘁𝗽𝗹𝗮𝗰𝗲(𝗖𝗼𝗻𝗻𝗲𝗰𝘁 𝗔𝗰𝗰𝗼𝘂𝗻𝘁) integrations. Proficient in managing and implementing Stripe Connect solutions, including handling API integrations, subscription plans, recurring payments, payouts, and marketplace functionalities. Passionate about staying current with the latest payment technologies and continuously refining development skills. 𝐀𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝟐𝟐+ 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐰𝐢𝐭𝐡 𝐒𝐮𝐩𝐚𝐛𝐚𝐬𝐞 & 𝗟𝗼𝘃𝗮𝗯𝗹𝗲 𝐓𝐨𝐨𝐥𝐬 𝗦𝘁𝗿𝗶𝗽𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: - Subscription Plans - Recurring Payments - Stripe Connect (Marketplace) - Marketplace Identity Verification - Invoices - Tax Calculation - Payment API Integration - Payouts, - Freeze Funds - Webhook Integration(Signature) - PCI Compliance - Zapier - Make.com 𝗕𝗮𝗰𝗸-𝗲𝗻𝗱 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: PHP (Laravel, CodeIgniter, Yii2), Node (Nest, Express),Supabase. 𝗙𝗿𝗼𝗻𝘁-𝗲𝗻𝗱 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: React.JS,Vue.JS, jQuery, Material UI, Bootstrap, HTML 5, CSS, SASS, WordPress ,Make.com,Zapier, Lovable 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲: PostgreSQL, MySQL, NoSQL, SQL, MongoDB, Firebase. 𝗖𝗹𝗼𝘂𝗱: Azure, AWS, GIT, Docker. 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀: Stripe Payment API, Make.com, Zapier, Supabase, Loveable, HubSpot API, Microsoft and Google Calendar synchronization oAuth, Skype, and Zoom integrations, Klarna API integration, GTM and Google Analysis. I invite you to review my portfolio, and afterwards, we can engage in a brief discussion regarding your project. This conversation will allow us to delve into the details of your project and explore how my skills and expertise can be leveraged to benefit your project or business.

𝗜 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂 𝗰𝗿𝗲𝗮𝘁𝗲 𝗽𝗮𝘀𝘀𝗶𝘃𝗲 𝗶𝗻𝗰𝗼𝗺𝗲 𝘄𝗵𝗶𝗹𝗲 𝘆𝗼𝘂 𝘀𝗹𝗲𝗲𝗽. For over 5 years now, I have been a "𝗼𝗻𝗲-𝘀𝘁𝗼𝗽-𝘀𝗵𝗼𝗽" saving my clients 𝘁𝗶𝗺𝗲 and 𝗺𝗼𝗻𝗲𝘆 while building them 𝗳𝗮𝘀𝘁, 𝗰𝗼𝗻𝘃𝗲𝗿𝘀𝗶𝗼𝗻-𝗳𝗼𝗰𝘂𝘀𝗲𝗱 email marketing CRM for their businesses. Your email list and CRM are sitting there earning you nothing every day without an Email Marketing Specialist managing proper segmentation, automated flows, and clean CRM architecture in Klaviyo, HubSpot, or GoHighLevel is lost revenue. Most businesses I work with have a Klaviyo, HubSpot, or GoHighLevel account that's half-built: no welcome series, no abandoned cart or abandoned checkout recovery, no win-back campaign, a list that's never been properly segmented, and a CRM that's outgrown spreadsheets and manual follow-up. The result is low open rates, poor deliverability, unclear revenue per email sent, and customers who churn quietly because nobody ever built the system to catch them. I fix that. I'm an Email Marketing Specialist and CRM Systems Specialist who builds lifecycle marketing systems and CRM automation in Klaviyo, HubSpot, and GoHighLevel (GHL) the same three platforms clients repeatedly ask for when they're ready to stop losing revenue to a broken or unbuilt email/CRM setup. I start every engagement with a full account audit, then build or fix what's missing. What I do: 🎯 Email Marketing strategy, email campaign setup, and email automation. 🎯 Klaviyo flows: welcome series, abandoned cart/checkout, browse abandonment, post-purchase, win-back, sunset. 🎯 HubSpot CRM setup, marketing automation, workflows, sequences, and nurture campaigns. 🎯 GoHighLevel CRM setup, workflow automation, pipelines, funnels, snapshots, and CRM automation. 🎯 Audience segmentation & targeting and list hygiene, so every audience gets the right message at the right time. 🎯 Lead nurturing, lead generation support, and customer retention / reactivation campaigns. 🎯 Campaign management, A/B testing, and ongoing email copywriting. 🎯 Deliverability management (SPF/DKIM/DMARC), list health, and sender reputation. 🎯 Reporting built around revenue per email/recipient, renewal rate, and conversion not vanity open-rate dashboards. 🎯 Zapier and webhook integrations connecting your CRM to the rest of your stack. + Scaled a 7-figure brand from $35k/mo in email marketing revenue to over $100,000+ /mo. I work best with: eCommerce brands, B2B SaaS companies, agencies, and service businesses that already have a list, CRM, or marketing automation platform in place but haven't been using it properly and want lifecycle marketing, CRM automation, and customer retention owned end-to-end by one person, not scattered across five tools and three freelancers. Tools & platforms: Klaviyo · HubSpot · GoHighLevel (GHL) · Zapier · SPF/DKIM/DMARC deliverability setup · CRM automation · marketing automation If your list has never been properly segmented, your flows stop at "welcome email," or your CRM setup is undocumented and nobody fully owns it, send me a message. I'll start with an account audit of what's already there and tell you exactly what's costing you revenue. Kindly send me a direct message here on Upwork, click the "𝗜𝗻𝘃𝗶𝘁𝗲 𝘁𝗼 𝗝𝗼𝗯" button, or simply "𝗛𝗶𝗿𝗲 𝗡𝗼𝘄" to get started. It's time to make profit. ⏱️ I am available for long-term, short-term, hourly, and fixed contract. Keywords Email Marketing, HubSpot, Klaviyo, GoHighLevel, HighLevel, GHL, CRM Automation, Marketing Automation, Workflow Automation, Email Automation, Lead Nurturing, Segmentation, Email Deliverability, SPF, DKIM, DMARC, Lifecycle Marketing, CRM Setup, Email Campaign, HubSpot, Klaviyo, Email Marketing, Automation, Cold Email, HubSpot Expert | HubSpot CRM | HubSpot CRM Optimization | HubSpot Setup & Strategy | HubSpot Marketing | HubSpot Sales | HubSpot Automation | HubSpot Workflows | HubSpot Sequences | HubSpot Lead Scoring | HubSpot Lifecycle Stages | HubSpot Reports & Dashboards | HubSpot Campaigns | HubSpot Email Workflows | HubSpot Forms Optimization | HubSpot Lead Tracking | HubSpot Marketing Funnel | HubSpot Analytics Setup | HubSpot Campaign Automation | HubSpot Email Strategy | HubSpot List Segmentation | HubSpot Smart Content | HubSpot Lead Magnets | HubSpot Lead Nurturing | HubSpot A/B Testing | HubSpot Pop-Up Forms | HubSpot Call-To-Action | HubSpot Custom Reports | HubSpot Blog Marketing | HubSpot SEO Tools | HubSpot Social Media Integration | HubSpot Content Strategy | HubSpot Workflow Triggers | HubSpot Marketing Dashboard | HubSpot Revenue Tracking | HubSpot Ad Campaigns | HubSpot Tracking Pixels | HubSpot Traffic Analytics | HubSpot Inbound Content | HubSpot Behavioral Targeting | HubSpot Pipeline Marketing | HubSpot Conversion Paths | HubSpot Asset Management | HubSpot Progressive Profiling | HubSpot Lead Scoring Model | HubSpot Chatbot Setup | HubSpot Email Personalization

Developer from Nottingham UK - I only bid on projects I'm confident I can complete and ensure a transparent process throughout the project lifecycle. My favourite work to take on is completely custom projects such as custom eCommerce websites, SaaS, API intgeration and so on. I have a MEAN stack application which has registration, sign in, payments, products and everything else baked in already - which allows me to adjust it for any new projects quickly. If I've bid on your job, then I'm very interested in what you're trying to accomplish as I'm quite selective with the projects I take on currently. Technologies I work in include: Angular 11 JavaScript / TypeScript Less / Sass Bootstrap 5 NodeJS MongoDB

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.

Over 16 years commercial experience in eCommerce with focus on Basket and Checkout integration to include WorldPay, Pay360, Amazon Payments, PayPal, Stripe and Klarna and full Marketplace Integration to MS SQL Database Servers via APIs with Amazon Merchant Services, eBay Trading, Large Merchant Services and Sell APIs, Rakuten, CDiscount, FNAC, Game and other web services using both RESTful and SOAP interfaces. Projects including Data Access and Business Logic Layer Design as well as Database Architecture and Maintenance, Server Configuration and performance monitoring via pingdom and SSMS.