Sepi here😃 I build systems that keep working when nobody's looking at them. Web apps, integrations, CRM pipelines, automation, the connective tissue of a business. My priority order: get it working first, then make it cheap. Sometimes that means self-hosting and DIYing everything down to a $70/month box. Sometimes the right answer is just paying for the SaaS, because tech moves fast and the two weeks you'd spend rebuilding something that already exists costs more than a year of the subscription. I don't have a religion about it, I pick whatever gets you running soonest and optimize from there. One client's operation right now: 10 workflows eating Gmail, Slack, meeting transcripts, and calendar into a single Postgres brain. 72K documents, 10K contacts all matched to the right person and company, two CRMs kept in sync, next actions surfaced automatically. The other recent build is a creator commerce platform, multi-tenant, branded storefronts, Stripe Connect handling seller payouts in production. I handle the whole build, architecture, database, backend, frontend, deployment, so you explain your business once, not once per specialist. What I'm actually here for is making your work easier. Ten tools that don't talk to each other, data everywhere and answers nowhere, a manual process eating twenty hours a week that a workflow kills in one. And I have a soft spot for old systems. The spreadsheet from 2016, the WordPress site nobody dares touch, the tool your whole team lives in. Most devs want to tear those down and start over. I'd rather modernize them in place, because that system runs your business and you've spent years making it fit you. It doesn't deserve a demolition, it deserves an upgrade. Stack, since you'll ask anyway: Automation & AI: self-hosted n8n, REST APIs, webhooks, queues. CRM work in Airtable, Attio, HubSpot. AI agents where a decision actually needs to be made, plain code everywhere else, because the boring parts of AI systems (matching people to companies, catching the model when it makes things up, knowing what each call costs) are what decide whether they survive production. Data & backend: Postgres, Supabase, multi-tenant schemas, vector search. Payments including marketplace payouts. If the data's behind a wall: scraping, proxies, reverse-engineering the API they didn't want you to find. Web & frontend: React, Next.js, some real-time 3D and motion work. Generative media pipelines when a project needs video, avatars, or covers in volume. Infra: Docker, Linux, self-hosted is the best thing in the world

Integrated systems rarely break on the first successful API call. They break three weeks later: a failed Shopify webhook, an ERP order that never synced, a CRM contact missing from the pipeline, or POS inventory that no longer matches the store. I build and fix the middleware/API layer behind those systems. My strongest work is around Shopify, ERP, CRM, POS, and Laravel-based backend systems where product data, orders, inventory, customers, payments, and reporting all need to stay aligned. What I usually handle: - Shopify / Shopify Plus integrations and custom commerce workflows - ERP and CRM syncs: Acumatica, Salesforce, Zoho, HubSpot, SAP-style systems - POS and inventory workflows: Clover, store operations, loyalty, order flows - Laravel/PHP middleware, APIs, webhooks, queues, cron jobs, retries, and logs - Admin dashboards, reporting panels, and operational data models - Production debugging where the issue is hidden across multiple systems Relevant background: - Built and supported systems handling 24k+ products, 3M+ users, and 2,000+ locations - Led technical delivery across teams of 20+ - Worked across Shopify, Shopify Plus, Magento, BigCommerce, Acumatica, Salesforce, Zoho, Clover POS, Laravel, REST/GraphQL APIs, PostgreSQL, MySQL, AWS, Firebase, and payment systems I also take on SaaS MVPs and React Native app work when the project depends on backend architecture, integrations, subscriptions, analytics, or production stability. If your store, ERP, CRM, POS, or internal dashboard is held together by fragile syncs and unclear data flow, I can help trace where it breaks and make the system reliable.

HI! I’ve built 40+ AI agents and automation systems handling thousands of tasks daily from lead processing to full operational workflows. Most clients come with something that “almost works”. Flows break. Data is messy. No one understands what happens inside. I fix that. I design automation with clear logic, clean data flow, and control at every step. If something fails it retries. If data is wrong — it is blocked. If system grows — it still works. What I usually build: – AI agents for operations and sales – n8n / Make workflows with real error handling – CRM and API integrations – data pipelines and internal toolsWhat I build: – Supabase and PostgreSQL backends with clear schema – Internal tools with lovable and supabase – Data pipelines from scraping to AI to CRM I use AI to move faster. But I always check logic and edge cases manually. Experience: 40+ AI agents and automation systems RAG systems with vector search and clean outputs CRM and sales automation pipelines internal tools with supabase and APIs systems built for real load If your automation is messy I can rebuild it. If you start from zero I can design it right. 🔧 Stack: n8n | make | supabase | postgresql | lovable | openai | rag | apis | webhooks | crm systems | data pipelines | ai agents

I build automation systems that actually work in production — not just impressive demos that fall apart under real-world conditions. With nearly 20 years in IT infrastructure, including disaster recovery and business continuity for enterprises requiring 99.999% uptime, I bring that same reliability mindset to every workflow I build. Recent projects include a multi-tenant WhatsApp AI assistant handling Hebrew language support across multiple business clients, an automated sports court booking system that monitors availability and instantly reserves slots, and lead reactivation campaigns that re-engage dormant customer databases to generate new revenue from contacts businesses already own. What I Build I specialize in n8n and Make.com workflows that connect your existing tools and eliminate the manual work eating up your team's time. This includes AI-powered document processing that categorizes and routes emails, extracts data from invoices, and summarizes lengthy reports. I build CRM and database automations that keep your systems synchronized, update records automatically, and trigger follow-up sequences without human intervention. I also create custom chatbots and AI assistants that handle customer inquiries, qualify leads, and integrate directly with your scheduling and support systems. How I Work Every engagement starts with a discovery call where we map out your current process, identify bottlenecks, and define what success looks like. I then provide a detailed scope document with timeline and fixed pricing — no hourly surprises. During the build phase, you get access to a staging environment where you can test everything before it touches your live systems. After delivery, I include documentation and a walkthrough session so your team understands exactly how the system works. I also offer ongoing support packages for businesses that want someone monitoring and maintaining their automations long-term. Why It Matters The automation tools are accessible to anyone, but building systems that handle edge cases, recover from errors gracefully, and scale with your business requires experience most freelancers don't have. I've managed infrastructure where downtime meant six-figure losses — that discipline carries into every workflow I deliver.

Over six years, I built the systems that ran my own business as it grew ~11× to ~$150K a year in revenue. QuickBooks integrations, financial dashboards, and AI workflows doing the heavy lifting, no extra headcount. I build that same backbone for clients: an accountant by training, 12+ years in Google Sheets and Apps Script, with AI wired in properly. OpenAI and Claude through deterministic, auditable functions, so the numbers are never an LLM's guess. Tell me the manual process eating your team's week, and I'll show you what it looks like automated.

Written by an actual human. Ironic, since building with AI is my whole job, but every word here is mine, and so is every message you'll get. If a reply ever reads like ChatGPT wrote it, fire me. Most people who find me are holding an app that looks finished and isn't. Built in Lovable or Bolt over a weekend, demoed well, and now it's supposed to take real money from real users, and nobody knows whether it will hold. Or a contractor went quiet in week three and took the repo knowledge with them. That's the job. I read code I didn't write, work out what's solid and what only appeared to work, and get it to production properly. WHAT USUALLY TURNS UP API keys in the client bundle. Auth where any logged-in user can read another tenant's data. Stripe webhooks with no idempotency, so a retry double-charges. RLS policies that read correctly and don't actually isolate anything. No tested backup. Demo screens propped up by an empty backend. None of it shows up in a demo. All of it shows up in production. START WITH AN AUDIT. $400, 2 days. You give me repo access. You get a written report: every finding with file and line reference, severity, reproduction steps, and what it costs to fix. Auth and tenant isolation, exposed secrets, payment flow integrity, RLS correctness, behaviour under load. The report is yours whether or not you hire me for the fixes. You can hand it to any developer. Already have a developer and want a second opinion before launch? I do the review-and-verify side on its own. The person doing the work shouldn't be the person saying it passed. THEN, IF YOU WANT IT FIXED I keep what works, rebuild what doesn't, and hand the system back properly. Repo in your GitHub org, secrets rotated, staging and production separated, deploys you can roll back, and documentation good enough that the next developer doesn't need me. RECENT WORK Trimi. Lovable to Claude Code migration in two hours. Organic traffic 250k to 500k monthly after the migration and SEO push. Founders now ship updates without me. That was the point. Milpath. AI SaaS built with Claude Code and Codex, $5k MRR in 90 days. claudemarket.ai. My own AI directory, 60,000+ monthly visitors from technical SEO. Helpie AI. 1,000+ monthly active users. O-ts. 2x conversion rate after rebuild. ALSO MVP builds from scratch, idea to live product taking payments. AI apps and agents: Claude API, OpenAI API, RAG, chatbots. Migrations off Lovable, Bolt.new, Replit, Base44 and v0. Supabase auth, RLS, edge functions, Postgres schema design. Stripe checkout, webhooks, subscriptions. Claude Code and CLAUDE.md setup so your team can build AI-native without me. Blocked on a security review or an enterprise questionnaire? I do production hardening with a written control summary you can hand to whoever is asking. Stack: Lovable, Claude Code, OpenAI Codex, Base44, Replit, Bolt.new, Supabase, React, Next.js, TypeScript, Vercel, Stripe, n8n, OpenClaw. THE GUARANTEE Free scoping call before you spend anything. We map features, flows, milestones and price. Not a fit, you keep the plan. Working prototype in 3 weeks, real functionality on a live database, no mockups. Unlimited revisions within scope. WAYS TO WORK Audit, $400 fixed. Review and sign-off only, if you have a developer already. Fixed-price build or rescue, typically $2,500 to $15,000. Fractional developer, 10 to 30 hrs/week. Retainer from $650/month. You own the code either way. WHY THE SPEED IS REAL I was a software engineer at brainpool.ai, a London AI consultancy, building production LLM systems with LangChain, RAG pipelines and the Claude and OpenAI APIs before going freelance. That's the part that matters here. I can read the code, not just prompt it. When something breaks I debug it, rather than re-prompting until the error goes away and three new ones appear underneath. Claude Code, Lovable, Codex and Supabase are my daily tools, and after 50+ shipped projects I know where they fall over. Which generated auth patterns leak data, which edge functions time out under load, which screens are propped up by nothing. Knowing the failure points is what makes moving fast safe. WHAT CLIENTS SAY "Every technical finding, missing security headers, robots.txt, llms.txt, structured data, was specific, accurate and independently verified." SaaS founder, product audit. "Gets the job done without all the problems of working with the discount freelancers we all know about." Figma to Lovable build. Both from my verified reviews below. ABOUT ME I'm Zac. One developer in London, no account managers, no handoffs. I teach this stack to 3,000+ developers on YouTube and in a paid community. I keep the project load small, so if I'm at capacity I'll say so. No Shopify stores, and if you want pixel-perfect Figma work I'm the wrong hire Daily overlap with US Eastern. Hit Invite to Job and tell me what's broken. Fixed-price proposal within 24 hours

🏆 Top Rated on Upwork | ✅ AI Systems Expert | 100% Job Success Score | $20K+ Earned I build production AI systems across the full stack: workflow automation (n8n, Make, Zapier, Power Automate), voice AI agents (VAPI, Bland.ai, Retell AI), AI chatbots and RAG systems, CRM integrations (GoHighLevel, HubSpot), and AI-native applications built with Claude Code, Claude Cowork, and Cursor. Recent high-impact work: Autonomous AI support agent (n8n + Voiceflow) - AI resolves Level 1 tickets solo, checking live outages and CRM records with zero human touch - 2500+ tickets automated, 8500+ full conversations handled end to end - Routes only real escalations to the correct one of 7 departments Claude Code-built multi-agent AI platform - Built a 16+ agent system from scratch in Claude Code, each agent task-specialized - Hybrid RAG with cross-encoder reranking finds the right document, not just a similar one - Bilingual (English/Arabic), multi-tenant isolation for secure multi-client use AI email automation and operations (Power Automate) - Every inbox email gets read, classified, and acted on with zero human triage - AI drafts a threaded reply and opens a tracked task in the business's own tone - Runs unattended on live Microsoft 365, tying Outlook, CRM, and task tools together Automated event intelligence and GTM enrichment (Zapier) - 9-Zap system scrapes events and fuzzy-matches them to surface only genuinely new ones - AI writes SEO-optimized descriptions, routed for one-click approval before publishing - A second pipeline classifies every signup into 14 industries in real time AI voice phone systems (VAPI, Bland.ai) - AI voice agents answer real customer calls with zero missed calls after hours - Handles interruptions, holds context across multi-turn calls, knows when to hand off - Delivered as a live production system with ongoing support, not a demo Business operating system build (n8n + GoHighLevel) - Architected an entire operation's workflows, not just one automation, in one system - Custom API integrations eliminated manual data entry between disconnected tools - Delivered in 8 days, from first conversation to a live system Tools I work in daily: n8n, Make, Zapier, Power Automate, Claude Code, Claude Cowork, Cursor, OpenAI (GPT-4o/GPT-5), MCP servers, Voiceflow, VAPI, Retell AI, Bland AI, ElevenLabs, Deepgram, GoHighLevel, HubSpot, Zoho, Apollo, Instantly, Airtable, Notion, Python, Node.js, FastAPI, Playwright, pgvector, AWS, REST APIs, webhooks. Every proposal I send comes backed by a working demo, not a pitch. Message me your bottleneck. I will show you the closest system I have already built.

🚀 Shopify Developer | AI Automation | HubSpot | WordPress Expert | 14+ Years Experience Are you looking for a developer who can do more than just build a website? With 14+ years of experience and 100+ successfully completed projects on Upwork, I help businesses build, optimize, and automate their digital operations through Shopify, WordPress, HubSpot, AI Automation, API Integrations, and custom business applications. I don't just develop websites—I build scalable business systems that improve customer experience, streamline operations, and increase revenue. Over the years, I've partnered with startups, agencies, wholesalers, beauty brands, health & wellness companies, cannabis businesses, manufacturers, and SaaS startups to deliver solutions that solve real business challenges. Whether you're launching a new Shopify store, migrating from another platform, integrating HubSpot CRM, building a wholesale/B2B portal, automating workflows with AI, or developing a custom web application, I can manage the project from planning to deployment. 🛒 Shopify Development As a Shopify Developer, I specialize in building modern eCommerce solutions designed for growth. ✔ Shopify Store Development ✔ Shopify Theme Development ✔ Shopify 2.0 ✔ Shopify Plus ✔ Custom Liquid Development ✔ Shopify Migration ✔ Wholesale / B2B Portals ✔ Customer-Specific Pricing ✔ Product & Collection Management ✔ Shopify Speed Optimization ✔ Conversion Rate Optimization (CRO) ✔ Shopify SEO ✔ Shopify API Integration ✔ Subscription Stores ✔ Klaviyo Integration 🌐 WordPress Development ✔ WordPress Development ✔ WooCommerce ✔ Elementor ✔ Divi ✔ Custom Themes ✔ Plugin Customization ✔ Membership Websites ✔ Landing Pages ✔ Website Performance Optimization ✔ Technical SEO 🤖 AI Automation & HubSpot CRM I help businesses reduce manual work and improve productivity through intelligent automation. ✔ AI Automation ✔ OpenAI Integration ✔ ChatGPT Integration ✔ AI Chatbots ✔ Workflow Automation ✔ HubSpot CRM Integration ✔ Shopify ↔ HubSpot Customer Synchronization ✔ CRM Automation ✔ Marketing Automation ✔ Email Automation ✔ Zapier ✔ Make Automation ⚙ Custom Web Applications ✔ React.js ✔ Node.js ✔ PHP ✔ Laravel ✔ REST APIs ✔ Webhooks ✔ SaaS Platforms ✔ Admin Dashboards ✔ Booking Systems ✔ Customer Portals 🎨 UI/UX Design ✔ Figma ✔ Wireframing ✔ Interactive Prototypes ✔ Mobile-First Design ✔ Landing Page Design ✔ User Experience (UX) ✔ User Interface (UI) ⭐ Recent Project Experience Throughout my career, I've successfully delivered: • Shopify Wholesale/B2B Stores with customer-specific pricing and ordering workflows. • Shopify & HubSpot CRM integrations with automated customer synchronization. • Shopify migrations from WooCommerce and other eCommerce platforms. • Custom Shopify themes and conversion-focused landing pages. • WordPress corporate websites and WooCommerce stores. • React.js and Node.js SaaS platforms with custom dashboards. • API integrations connecting Shopify with third-party business systems. • AI-powered workflow automation for business operations. • UI/UX design in Figma followed by complete front-end development. ⭐ Why Clients Choose Me ✔ 14+ Years of Professional Experience ✔ Top Rated Upwork Freelancer ✔ 100+ Successfully Completed Projects ✔ Business-Focused Development Approach ✔ Excellent Communication ✔ Reliable Project Delivery ✔ Clean & Scalable Code ✔ Long-Term Technical Support ✔ Transparent Project Management 📞 Let's Work Together If you're looking for someone who understands technology, automation, and business strategy, I'd love to help. Whether it's Shopify, WordPress, HubSpot CRM, AI Automation, API Integrations, or a custom SaaS platform, my goal is to deliver scalable solutions that help your business grow. Let's discuss your project and build something exceptional together.

⏱️ 3000+ Hours | ⭐ Top-Rated Plus | ✅ 100% Job Success ✅ Certified HubSpot Developer ✅ Worked Directly with HubSpot Inc. ✅ Top-Rated web developer and designer I'm a Certified HubSpot Developer specializing in building, automating, and optimizing HubSpot CRM and CMS solutions that help businesses save time, improve lead management, and increase revenue. I work with startups, agencies, and growing businesses to design scalable HubSpot systems—from CRM implementation and workflow automation to custom CMS development and API integrations. What I Can Help You With: ✅ HubSpot CRM ㆍCRM implementation and migration ㆍContact, Company, Deal & Ticket configuration ㆍCustom properties, associations and lifecycle stages ㆍData cleanup, deduplication and data governance ㆍCustom objects and advanced CRM architecture ✅ HubSpot Automation ㆍComplex workflow automation ㆍLead routing and assignment ㆍSales and marketing automation ㆍInternal notifications and approval workflows ㆍLead nurturing campaigns ㆍOperational automation ✅ HubSpot CMS Development ㆍCustom HubSpot websites ㆍHubL development ㆍCustom modules and themes ㆍLanding pages ㆍBlog templates ㆍEmail templates ㆍResponsive and high-performance development ㆍConversion-focused UI implementation ✅ HubSpot Integrations ㆍHubSpot REST APIs ㆍCustom API development ㆍCustom webhook integrations ㆍTwo-way data synchronization ✅ Marketing Hub ㆍEmail marketing ㆍAudience segmentation ㆍLead scoring ㆍCampaign automation ㆍForms ㆍCTAs ㆍReporting dashboards ㆍAttribution setup ✅ Sales Hub ㆍDeal pipelines ㆍSequences ㆍPlaybooks ㆍQuotes ㆍTasks ㆍMeetings ㆍSales reporting ㆍForecasting ✅ Service Hub ㆍTicket pipelines ㆍKnowledge Base ㆍCustomer feedback surveys ㆍCustomer support automation ㆍSLA workflows ✅ Technical Skills ㆍHubSpot CRM ㆍHubSpot CMS Hub ㆍHubSpot Marketing Hub ㆍHubSpot Sales Hub ㆍHubSpot Service Hub ㆍHubSpot Operations Hub ㆍHubSpot Commerce Hub ㆍHubL ㆍHTML5 ㆍCSS3 ㆍJavaScript ㆍPHP ㆍREST APIs ㆍWebhooks ㆍSQL ㆍGit 💡Why Clients Hire Me ✔ Certified HubSpot Professional ✔ 3000+ hours successfully delivered on Upwork ✔ Top Rated Plus with 100% Job Success ✔ Strong experience solving complex HubSpot automation challenges ✔ Clean, scalable, and well-documented implementations ✔ Excellent communication and proactive project management 📈 Typical Projects ㆍ HubSpot CRM implementation ㆍHubSpot onboarding ㆍCRM migrations ㆍWorkflow automation ㆍLead scoring ㆍSales pipeline optimization ㆍMarketing automation ㆍCustom HubSpot websites ㆍHubSpot API integrations ㆍWordPress to HubSpot migration ㆍHubSpot CMS theme development ㆍCustom HubSpot modules ㆍReporting dashboards ㆍData cleanup and CRM optimization If you're looking for a HubSpot developer who can combine CRM strategy, automation, CMS development, and API integrations to build reliable, scalable solutions, I'd be happy to discuss your project.

I build AI agents and automation systems that eliminate repetitive work and run 24/7 without human intervention. I specialize in deploying and customizing autonomous AI agents using OpenClaw (ClawdBot), Hermes Agent, and Claude-powered systems that handle real tasks across messaging platforms, email, calendars, CRMs, and APIs. Whether you need a personal AI assistant on Telegram or WhatsApp, a business workflow that connects your tools, or a custom AI agent that learns and adapts over time, I architect and deliver production-ready systems. ----------------------------------------------- WHAT I BUILD Autonomous AI Agents OpenClaw/ClawdBot setup, customization, and deployment. Hermes Agent with persistent memory and self-improving skills. Claude, GPT, and open-source LLM-powered agents. Multi-agent systems with routing, memory, and tool use. AI Automation and Workflow Orchestration End-to-end automation with n8n, Make, and Zapier. API integrations connecting CRMs, databases, and third-party services. Webhook pipelines, data processing, and event-driven workflows. AI Chatbots and Conversational Systems Custom chatbots with RAG, LangChain, and LangGraph. Voice agents and AI receptionists. Telegram, Discord, Slack, and WhatsApp bot development. Backend Systems and Infrastructure Python, Node.js, TypeScript backend development. AWS, Docker, Redis deployment for always-on AI systems. Real-time data pipelines and monitoring. ----------------------------------------------- TECH STACK AI Agents: OpenClaw, Hermes, Claude, GPT, LangChain, LangGraph, RAG, MCP Automation: n8n, Make, Zapier Languages: Python, Node.js, TypeScript, JavaScript, Rust LLMs: Claude, GPT-4o, Gemini, DeepSeek, LLaMA, Ollama Infra: AWS, Docker, Redis, PostgreSQL, Supabase Messaging: Telegram, WhatsApp, Discord, Slack CRMs: HubSpot, Salesforce, Airtable, Notion APIs: REST, WebSocket, OAuth, Webhooks ----------------------------------------------- WHY CLIENTS CHOOSE ME I don't just execute - I consult. I help you choose the right architecture, avoid costly mistakes, and build systems that scale. Fast responses, clean code, clear communication. Systems that work reliably in production, not just demos. Ready to automate? Message me and let's discuss your project.