𝐒𝐭𝐨𝐩 𝐰𝐚𝐬𝐭𝐢𝐧𝐠 𝐲𝐨𝐮𝐫 𝐒𝐚𝐥𝐞𝐬 & 𝐎𝐩𝐬 𝐭𝐚𝐥𝐞𝐧𝐭 𝐨𝐧 𝐦𝐚𝐧𝐮𝐚𝐥 𝐝𝐚𝐭𝐚 𝐞𝐧𝐭𝐫𝐲. 𝐁𝐮𝐢𝐥𝐝 𝐚 𝐬𝐞𝐥𝐟-𝐬𝐜𝐚𝐥𝐢𝐧𝐠 𝐆𝐓𝐌 𝐞𝐧𝐠𝐢𝐧𝐞. I am an MBA + Engineer and Top Rated Plus GTM Engineer specializing in high-performance automation. I bridge the gap between complex technical architecture and revenue-focused strategy. I don't just "build Zaps"—I design intelligent systems using Clay, n8n, and LLMs that automate the entire funnel from lead sourcing to CRM hygiene. As the former Tech Lead at Poplin, I built the B2B infrastructure from the ground up, scaling lead scoring and automated outreach systems that fueled rapid growth. - 𝐂𝐨𝐫𝐞 𝐆𝐓𝐌 & 𝐀𝐈 𝐂𝐚𝐩𝐚𝐛𝐢𝐥𝐢𝐭𝐢𝐞𝐬 - Intelligent Prospecting (Clay + AI): Multi-source enrichment (Apollo, LinkedIn, Google Maps) combined with AI-driven ICP filtering and personalized messaging. - Workflow Orchestration (n8n, Zapier, Make): End-to-end RevOps pipelines that sync multi-channel data, automate follow-ups, and manage lead routing. - AI Agent Integration: Deploying GPT/Gemini-powered agents for email intent classification, lead qualification, and automated drafting of technical documents. - CRM Architecture: Deep optimization of HubSpot, Zoho, and GoHighLevel to ensure 100% data integrity and automated "Lane-1" hygiene. - Advanced Scripting: Custom Python/Node.js scripts for complex API integrations, web scraping (Apify), and custom ETL processes. - 𝐓𝐡𝐞 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤 - Automation: n8n (Expert), Zapier, Make com, Google Apps Script. - GTM Tools: Clay com, Apollo, Instantly, GMass, Close. - AI/LLM: OpenAI API, Gemini, Anthropic, Vector databases. - Data/Dev: Python, JavaScript, SQL, Airtable, PostgreSQL. - 𝐏𝐫𝐨𝐯𝐞𝐧 𝐈𝐦𝐩𝐚𝐜𝐭 - Poplin (US): Led the technical back-office setup. Automated lead scoring and outreach infrastructure that eliminated manual prospecting. - Ivy Tutors (US): Overhauled CRM workflows, cutting manual operations by 50% and doubling response speed. - Telehealth & Real Estate: Built custom AI deal-analyzers and patient intake systems that process thousands of records with zero human touchpoints. 𝐖𝐡𝐲 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞? - Operator Mindset: I think in terms of ROI and "Human-in-the-loop" efficiency, not just code. - Top Rated Plus: A track record of reliability, clear communication, and clean documentation (Loom walkthroughs included). - Fast Execution: I build scalable systems that are "documented and done" within weeks, not months. 𝐑𝐞𝐚𝐝𝐲 𝐭𝐨 𝐚𝐮𝐭𝐨𝐦𝐚𝐭𝐞 𝐲𝐨𝐮𝐫 𝐠𝐫𝐨𝐰𝐭𝐡? 𝐂𝐥𝐢𝐜𝐤 𝐭𝐡𝐞 "𝐈𝐧𝐯𝐢𝐭𝐞" 𝐛𝐮𝐭𝐭𝐨𝐧, 𝐚𝐧𝐝 𝐥𝐞𝐭’𝐬 𝐝𝐢𝐬𝐜𝐮𝐬𝐬 𝐲𝐨𝐮𝐫 𝐫𝐨𝐚𝐝𝐦𝐚𝐩.

I help founders and business operators build, launch, take over, and scale business-critical mobile and web platforms. Most clients I work with are not just looking for “an app developer.” They usually have a real business workflow that needs to become software: customer portals, admin dashboards, booking systems, dispatch flows, marketplaces, SaaS products, AI-assisted tools, internal operations platforms, or existing products that need to be stabilized and improved. Across 100+ projects, I’ve helped companies turn complex product ideas and operational processes into reliable software used by real customers. The products I’ve worked on have supported 2M+ app downloads, large active user bases, revenue growth, and long-term business operations. HOW I CAN HELP 👉A single technical partner for the full product lifecycle I can support the full process: product planning, UX/UI design, mobile app development, web app development, backend development, REST API integrations, admin systems, QA, deployment, app store launch, and post-launch support. 👉Taking over and improving existing products If you already have a product but the codebase is messy, the previous developer disappeared, documentation is missing, or the app is hard to maintain, I can help audit the system, stabilize development, improve architecture, and create a safer long-term technical foundation. 👉Building MVPs that can grow after launch I focus on practical MVPs: the smallest version that proves the core workflow, supports real users, and does not become a throwaway prototype. The goal is not only to launch quickly, but to build something maintainable enough to keep improving. 👉Transparent collaboration You will always know what is being worked on, why it matters, and how much time was spent. I work with clear communication, structured project management, weekly progress reports, time tracking, QA cycles, and straightforward expectations. 👉Long-term support and ownership You own the product, the code, the accounts, and the direction. I can also support the product after launch with bug fixes, OS updates, monitoring, performance improvements, security checks, and ongoing feature development. BACKGROUND ✅ 10+ years of professional experience in mobile app development, web development, backend systems, product architecture, and long-term software support. ✅ Worked on large-scale products for companies including Volkswagen, Bosch, and Invisalign. ✅ Delivered mobile apps, web apps, backend systems, admin dashboards, AI features, marketplace-style platforms, and workflow-heavy business tools. ✅ Strong experience with: - iOS, Android, React Native, Kotlin, Swift, SwiftUI, Jetpack Compose - Web apps, SaaS platforms, admin dashboards - Backend development, APIs, authentication, databases, cloud infrastructure - AI assistants, RAG, document search, workflow automation - QA, deployment, app store release, monitoring, and support My focus is simple: understand the business problem, build the right product, communicate clearly, and stay available after launch. If you need a reliable technical partner for a serious mobile, web, SaaS, AI, marketplace, or operations platform, send me a message and I’ll walk you through the safest way to build or improve it.

I build Klaviyo email marketing programs for Shopify DTC brands, with 250+ builds and $10M+ driven for clients. Most brands come to me in one of two situations. Either email is doing nothing at all, or it is doing something and nobody can tell me exactly what. Both are fixable, and the fix is almost always structural rather than creative. The target I work toward is email driving 20% or more of total revenue. Klaviyo work I take on: • Klaviyo flows. I build welcome series, abandoned cart, checkout abandonment, browse abandonment, post-purchase, winback, and replenishment flows against your actual purchase data rather than a template pack. • Klaviyo campaign management. I run your send calendar, segmentation, and A/B testing cadence. • Klaviyo email design. I design on-brand, responsive email templates in Figma and build them out in Klaviyo, so your campaigns and flows look like the rest of your brand rather than a stock layout. • Klaviyo audits and deliverability. I handle domain authentication, sunset flows, engagement segmentation, and sender reputation repair. • Klaviyo migration. I move brands from Mailchimp, Omnisend, or HubSpot into Klaviyo with subscriber history and automations intact. • Klaviyo SMS. I connect Postscript and Attentive to shared segments so that email and SMS stop cannibalizing each other. My stack: Klaviyo, Shopify, Figma, Recharge, Postscript, Attentive, CheckoutChamp, ShipStation, Omnisend, Mailchimp, and HubSpot. Recent results: • A sports brand generated $3.5M in email revenue. • A fashion brand grew from $396K to $1M in 90 days. • A wellness brand went from $0 to $250K, built from nothing. • A non-profit generated $40.4B in 30 days across a 19M subscriber list in 9 regions, a 58% revenue lift. How I work: I start with an account audit, then write a build plan with clear sequencing before anything gets turned on. You receive weekly reporting on flow revenue, campaign revenue, and email as a percentage of total revenue. Most engagements start with one scoped project. You see the numbers on your own store first, and we scale from there. Tell me your platform, your list size, and what percentage of your revenue email is currently driving, and I will tell you what is realistic in 90 days.

I’m a UK-based full-stack developer with 20 years of experience building mobile apps, SaaS products, fintech platforms, and AI-enabled systems. My main stack is React Native, React, NestJS, Node.js, and .NET. I’ve also worked extensively with Stripe, PostgreSQL, Supabase, AWS, Azure, Cloudflare Workers, and production-grade API integrations. Most of my work involves taking a product from an early idea or an unstable codebase to something reliable, scalable, and ready for real users. That includes architecture, development, deployment, App Store and Google Play submissions, payment flows, third-party integrations, and production troubleshooting. A few examples of my work: Dalmore Group — Built backend systems for an investment platform processing more than 10,000 transactions per day. The platform included complex trade workflows, KYC/AML processes, AI document extraction, BullMQ queues, XState state machines, and audit-ready reporting. Gymnastrio — Developed a gym management SaaS using React, .NET Core, PostgreSQL, and Stripe Connect for class bookings, personal training, and multi-party payments. Swake — Built a customer feedback SaaS using React and NestJS, with SDKs for React Native, Ionic, and web applications. Docomi — Developed an AI customer support platform with RAG, workflow-based chatbots, semantic search, and knowledge ingestion from websites, Notion, Zendesk, SharePoint, and uploaded documents. MyDiabeticHealth — Built and launched a React Native app using Expo, Supabase, and RevenueCat on both iOS and Android. Vontrix VPN — Worked on a consumer VPN app connected to a 1,000-server WireGuard network, with subscriptions, AdMob, RevenueCat, and automated server updates. I can help with: • React Native and Expo apps • Full-stack SaaS platforms • .NET and ASP.NET Core development • React, Next.js, NestJS, and Node.js applications • Stripe, subscriptions, marketplaces, and payment flows • AI integrations, RAG systems, and LibreChat • API development and third-party integrations • App Store and Google Play submissions • Architecture reviews, performance issues, and production bugs I lead the technical direction and client communication myself. For larger builds, I work with a small senior team through my agency so we can move faster without lowering the quality of the work. Share your product idea, existing codebase, or technical problem, and I’ll give you an honest view of the best way to approach it.

We are a passionate team of experts utilizing code and no-code approaches to empower our clients with generative AI, custom web applications, and business solutions. We are not your traditional agency — we have built our company from the ground up to prioritize clear communication and close collaboration, becoming a seamless extension of your in-house team. 🖥️ Web Application Development -- We create responsive, scalable, and secure web applications using various frameworks, catering to a broad range of industries with tailored approaches to meet unique client requirements. 🚀 Startup MVPs -- We accelerate product development for startups by using low-code or no-code solutions, enabling rapid transformation of ideas into real-world products that resonate with target audiences and engage early adopters. 🏗️ SME Business Solutions -- We build customized, scalable, and cost-efficient solutions to streamline business processes, integrating AI and automation strategies, and providing long-term support to enhance efficiency, boost productivity, and generate substantial ROI. ✨ Generative AI -- We leverage our expertise in advanced AI methods, such as multi-modality, function calling, vector databases, and retrieval-augmented generation, to provide a competitive edge while working with popular AI models to benefit our clients' needs. 👥 Custom CRM Systems -- Tailored CRM systems designed for optimal efficiency, enhanced customer engagement, and analytics. 🔌 API Integrations -- Versatile API solutions, ensuring seamless communication across diverse platforms, even those without native APIs. 🧩 Chrome Extensions -- Enhance web interactions through seamless browsing integration. Contextual tooling, real-time features, and tracking without API constraints. 🕷️ Web Scraping -- Secure web scraping of publicly accessible data for dataset acquisition and market analysis. 🛒 Ecommerce -- We have worked with numerous ecommerce platforms, such as Amazon, Shopify, Stripe, and Etsy, on projects involving automation, data extraction, dashboard creation, and reporting.

Hi, I am the Founder and CEO of a Mobile App Design and Development Agency named App-Knit. We specialise in providing trustworthy and reliable service for your mobile app needs. We have worked on more than 250 Android, iOS, and WEB app projects in the last 7 years. The mobile apps that I have delivered have an average customer rating of 4.5 and above (on a scale of 5). Hence, User Experience (UX) and Design are at the heart of all the work we do. Our clients love me for always asking questions to fully understand their mobile app needs, ensuring that we create better apps. Quality is my top priority, and so is meeting deadlines. I am always honest, so don't expect me to lie to you or to your customers. I believe successful collaboration depends on truth and effective communication. I don’t offer one-size-fits-all solutions. Once you contact me, based on the details you have provided, I will get back to you with some questions or a price quote. Get in touch today to discuss how I can help you!

106 completed projects. 2,100+ hours logged. 100% Job Success Score. ✅ I know everyone throws around numbers like this, but here's the thing: take on that much work and usually something slips somewhere. A late delivery, an unhappy client, one bad review that drags the average down. Mine hasn't slipped yet. Scroll up and check for yourself, I'm not asking you to just take my word for it. I'm Mayank. I've been building software for 12+ years, since before "AI automation" was even a category people searched for on here. That matters more than it sounds like it should. A lot of people offering AI automation right now picked up n8n a year or two ago and that's basically their whole background. I came at it from the other side, I already knew how to build things that actually hold up once real users start hitting them, and automation just became the newest tool I use, not the only one. Here's something I'll say even though it probably costs me a few clients: not everything needs an AI agent or a big n8n workflow with a dozen nodes. Sometimes what you actually need is a simple Python script, and it'll be cheaper, faster, and break less. If that's your situation I'll just tell you. I'd rather do good work you come back for than oversell you once and never hear from you again. 🔧 What I usually get hired for: •••••••••••••••••••••••••••••••••••• ⚙️ Automating workflows with n8n and Python, connecting your tools and data so things run on their own instead of someone doing it by hand every day. I build in error handling and alerts from the start, not after something breaks and you find out the hard way. 🤖 Building AI agents and chatbots using the OpenAI API and LangChain, including RAG setups that pull answers from your actual business data instead of making things up. 📊 Cleaning up manual busywork in general, data entry, approvals, lead routing, syncing your CRM, reports that someone's still copy-pasting into a spreadsheet every week. 🚀 Building out SaaS products and MVPs from scratch, from the first idea to something real people are using. 💻 Full-stack apps in React, Next.js, Node, Laravel or PHP when an automation or AI tool needs a proper interface around it. 📱 Mobile apps in Flutter or React Native when it needs to live on someone's phone instead of just running quietly on a server. 🌍 I've worked across healthcare, fintech, e-commerce, education, logistics, marketplaces, sports and social platforms, so there's a decent chance I've run into something close to your problem before. If you've got a process right now that only works because someone remembers to do it manually every morning, tell me what it looks like. I'll give you an honest read on whether it needs a full AI agent, an n8n workflow, a quick script, or nothing fancy at all. 🛠️ Core skills: AI Automation, AI Workflow Development, n8n, Python, LangChain, OpenAI API, ChatGPT Integration, AI Agents, RAG, Conversational AI, Chatbot Development, Business Process Automation, Zapier and Make, SaaS Development, MVP Development, Full Stack Development, React.js, Next.js, Vue.js, Node.js, JavaScript, TypeScript, PHP, Laravel, REST APIs, Webhooks, Mobile App Development, Flutter, React Native, Android, iOS, AWS, Docker, CI/CD, PostgreSQL, MySQL, Database Design, Application Security AI Automation | AI Workflow Development | n8n | Python | LangChain | OpenAI API | ChatGPT Integration | AI Agents | RAG (Retrieval-Augmented Generation) | Conversational AI | Chatbot Development | Business Process Automation | Workflow Automation | Zapier & Make Integrations | SaaS Development | MVP Development | Full Stack Development | React.js | Next.js | Vue.js | Node.js | JavaScript | TypeScript | PHP | Laravel | REST API Development | Webhooks | Mobile App Development | Flutter | React Native | Android | iOS | AWS (EC2, S3, Lambda, CloudFront) | Docker | CI/CD | PostgreSQL | MySQL | Database Design | Application Security | API Integration

Stop fighting with slow, bloated WordPress sites. I build high-performance, scalable websites that look exactly like your design and stay lightning-fast. As a Top Rated Plus developer with 2,400+ hours on Upwork, I specialize in clean architecture using Elementor and Advanced Custom Fields (ACF) to eliminate "plugin-hell." How I help your business grow: - Figma to WordPress: 100% design fidelity (Pixel-Perfect) with responsive layouts for all devices. - Custom ACF Logic: Complex dynamic content, custom post types, and intuitive back-ends so you can easily manage your site. - Speed & SEO Optimization: 90+ Google PageSpeed scores. Fast sites convert better. - WooCommerce Expert: Scalable e-commerce solutions that actually drive sales. - Clean Code: Utilizing PHP, CSS, and JavaScript to extend Elementor’s capabilities where others fail. - Core Stack: WordPress, Elementor Pro, ACF, WooCommerce, PHP, JS, CSS. Ready to build a powerful platform that reflects your brand? Let’s jump on a quick call to discuss your project!

Hello👋 I am a 𝐒𝐞𝐧𝐢𝐨𝐫 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐌𝐨𝐛𝐢𝐥𝐞 & 𝐖𝐞𝐛 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 (15+ Years Experience) specializing in AI-powered applications, SaaS platforms and scalable MVP development. With 15+ years of experience in Full Stack Development, Mobile App Development, and Product Engineering, I have helped clients transform ideas into successful digital products from MVP development to enterprise-scale solutions. 💡 𝐂𝐨𝐫𝐞 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 ✔ SaaS Development ✔ MVP Development for Startups ✔ AI Application Development ✔ Mobile App Development (iOS & Android) ✔ Flutter App Development ✔ React Native App Development ✔ Web Application Development ✔ Custom Software Development ✔ Marketplace Development ✔ CRM & ERP Development ✔ Membership & Community Platforms ✔ Customer Portal Development ✔ Enterprise Software Development ✔ API Development & Third-Party Integrations ✔ Cloud Architecture & DevOps ✔ UI/UX Design & Product Strategy 🛠 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 Mobile Development: Flutter, React Native, Swift, Kotlin Frontend: React.js, Next.js, Vue.js, JavaScript, TypeScript Backend: Node.js, Laravel, Express.js, REST APIs, GraphQL, Microservices AI Development: OpenAI API, Claude API, AI Chatbots, AI Agents, Workflow Automation, Generative AI Cloud & DevOps: AWS, Azure, Firebase, Docker, CI/CD, Serverless Architecture Databases: PostgreSQL, MySQL, MongoDB, Firebase Payments & Integrations: Stripe, PayPal, Twilio, SendGrid, Google APIs, Firebase, HubSpot 🎯 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐇𝐢𝐫𝐞 𝐌𝐞 ✔ End-to-End Product Development ✔ Startup & SaaS Expertise ✔ Fast MVP Delivery ✔ Scalable Architecture ✔ Clean, Maintainable Code ✔ Product-Focused Thinking ✔ Strong Communication ✔ Agile Development Process ✔ Long-Term Support & Maintenance 𝐑𝐞𝐬𝐮𝐥𝐭𝐬 𝐈 𝐃𝐞𝐥𝐢𝐯𝐞𝐫: ✅ SaaS Platforms ✅ AI-Powered Applications ✅ Mobile Apps for iOS & Android ✅ Web Applications ✅ Marketplaces ✅ Membership Platforms ✅ Community Platforms ✅ CRM & ERP Systems ✅ Customer Portals ✅ Enterprise Software If you are looking for a Full Stack Developer who can turn your idea into a scalable SaaS platform, AI application, web app, mobile app, marketplace, membership platform, or custom software solution, let's discuss your project. 📩 𝐒𝐞𝐧𝐝 𝐦𝐞 𝐚 𝐦𝐞𝐬𝐬𝐚𝐠𝐞 — 𝐥𝐞𝐭’𝐬 𝐭𝐮𝐫𝐧 𝐲𝐨𝐮𝐫 𝐢𝐝𝐞𝐚 𝐢𝐧𝐭𝐨 𝐚 𝐩𝐨𝐰𝐞𝐫𝐟𝐮𝐥, 𝐫𝐞𝐯𝐞𝐧𝐮𝐞-𝐠𝐞𝐧𝐞𝐫𝐚𝐭𝐢𝐧𝐠 𝐩𝐫𝐨𝐝𝐮𝐜𝐭.

✅ ​🇹​​🇴​​🇵​ 3️⃣% of performers on Upwork 🥇 ✅ 𝟏𝟎𝟎% 𝐂𝐮𝐬𝐭𝐨𝐦𝐞𝐫 𝐒𝐚𝐭𝐢𝐬𝐟𝐚𝐜𝐭𝐢𝐨𝐧 ✅ $30​k + Earning ✅ Worked 3000+ plus hours ✅70+ Success Projects ✅ 10+ years web developer with programming and Webflow, Framer, Bubble.io experience, you’re in the right place! 👋👋👋 💎𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞💎 ✅ Design File to Webflow/ Framer/ Bubble.io (Figma, XD, etc) ✅ Existing Site Migration to Webflow ✅ Website Layout restructuring (responsive design, class and component restructuring) ✅ Finsweet Attributes and Client First System ✅ Site Performance Optimization (Page Speed, SEO, Assets Compression) ✅ Third Party Tools / Plugins Integration (Automations, Payments, Booking, etc) ✅ Content Update , Maintenance and Support ✅ Quick Bug Fixes ✅ Custom JavaScript solutions But don't just take my word for it – here are some testimonials from my clients: ⭐️⭐️⭐️⭐️⭐️I am highly impressed with Sarabjit Singh’s outstanding work on our Webflow project. His exceptional expertise and meticulous attention to detail were evident throughout the entire development process. Sarabjit not only fully understood our requirements but also offered insightful suggestions that significantly enhanced the final product. His ability to transform complex ideas into a seamless and user-friendly web experience far exceeded our expectations. Sarabjit maintained clear and prompt communication, ensuring a smooth and efficient collaboration. The project was completed on time and within budget, reflecting Sarabjit’s professionalism and dedication. I highly recommend Sarabjit Singh for any Webflow development projects and look forward to the opportunity to work with him again in the future. Thank you for your exceptional work, Sarabjit!" ⚡️ 𝐀𝐕𝐀𝐈𝐋𝐀𝐁𝐋𝐄 𝐅𝐎𝐑 𝐍𝐄𝐖 𝐏𝐑𝐎𝐉𝐄𝐂𝐓𝐒 ⚡️Daily updates, ⚡️Quick turnaround, ⚡️Flexible Availability, ⚡️Highest-Quality deliverables, ⚡️Conversion increase, ⚡️Individual approach to each project! With my expertise in Webflow development and design, you can expect a website that is not only visually stunning but also functional and optimized for search engines. I pride myself on delivering high-quality work that meets my clients' needs and exceeds their expectations. Let's get to business! Click the «Invite» button on the top right of this page to start our discussion.