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$20/hr
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Blockchain Developer & Trading Bot Specialist | DeFi · MEV · Algorithmic Trading | 24/7 Available | Production-Ready Systems
As a Senior Blockchain Developer and Trading Bot Developer with over 10 years of experience, I build secure, high-performance smart contracts, DeFi protocols, and automated trading systems. Whether you need a battle-tested MEV bot, arbitrage bot, trading bot, audit bots, trading signal bots, or a full DeFi protocol, I deliver production-ready solutions from architecture to mainnet.
I specialize as a Solidity developer on Ethereum and EVM chains, and as a Rust developer for Solana-based systems, along with Python for crypto bot development and trading automation. My expertise covers full-stack blockchain development, including dApp development, smart contract engineering, and blockchain automation with AI integration.
📌 𝗠𝘆 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲
✅ Trading Bots & Algorithmic Trading Systems
Development of crypto trading bots including MEV bots, arbitrage trading bots, mempool bots, and AI-assisted trading systems. I build advanced on-chain trading strategies with low-latency execution using WebSockets and real-time mempool monitoring. Experience with CCXT for CEX integrations (Binance, Bybit), Solana trading bots, Jupiter aggregator bots, on-chain copy trading,
and Telegram automation bots.
✅ Smart Contracts, Security & Optimization
Expert in smart contracts using Solidity and Rust, including smart contract auditing, Web3 security, and gas optimization. I develop secure DeFi protocols using OpenZeppelin standards and tools like Hardhat, Foundry, and Slither, ensuring safe and scalable blockchain development with vulnerability assessment covering re-entrancy, overflow, and sandwich attack vectors.
✅ DeFi Protocol & DEX Development
Building advanced DeFi protocols including AMMs, DEX development and token development. Hands-on experience with Uniswap V3, PancakeSwap, and Raydium, along with integrations and liquidity systems across Ethereum and Solana ecosystems.
✅ Full-Stack Web3 & dApp Development
End-to-end Web3 development with React.js, Next.js, TypeScript, Wagmi, Ethers.js, and Web3.js. Seamless wallet integrations including MetaMask, Phantom, and WalletConnect. Backend systems built on Node.js, Python FastAPI, MongoDB, and PostgreSQL — delivering scalable, high-performance decentralized applications.
🔥 𝗣𝗼𝘄𝗲𝗿𝗵𝗼𝘂𝘀𝗲 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸
🔥 Blockchain: Ethereum, Solana, BSC, Polygon, Arbitrum, Base, Cosmos
🔥 Languages: Solidity, Rust, Python, Go, TypeScript, JavaScript
🔥 Bot & Trading: CCXT, Flashbots, Web3.py, WebSockets, Mempool monitoring
🔥 Smart Contract Tools: Hardhat, Foundry, OpenZeppelin, Slither, Anchor
🔥 Frontend/Backend: React.js, Next.js, Node.js, FastAPI, MongoDB, PostgreSQL
✔ 𝗦𝗶𝗴𝗻𝗮𝘁𝘂𝗿𝗲 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗧𝗵𝗮𝘁 𝗪𝗶𝗻 𝗣𝗿𝗼𝗷𝗲𝗰𝘁𝘀
✔ MEV bot, arbitrage bot, sniper bot, and mempool bot development
✔ Solana trading bots, Jupiter bots, and on-chain copy trading systems
✔ Telegram automation bots and crypto alert systems
✔ Smart contract development, audit, and gas optimization
✔ Token development, staking contracts, and yield farming systems
✔ DEX development and AMM protocol design
✔ Full-stack blockchain and Web3 dApp development
✔ Testnet → Mainnet deployment across EVM and Solana
Ready to build your next blockchain project, trading bot, or DeFi system?
Message me — let's build fast, secure, and scalable.
Thank you for visiting my profile!
Associated with
Funavry Technologies
$53.5/hr
99%
Job Success
$400K+ earned
Available now
Offers consultations
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🇺🇸 𝗨𝗦 𝗘𝗰𝗼𝗺 & 𝗦𝗲𝗿𝘃𝗶𝗰𝗲 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗙𝗼𝗰𝘂𝘀
🎯 𝗥𝗢𝗜 𝗢𝗯𝘀𝗲𝘀𝘀𝗶𝗼𝗻 (𝗮𝘃𝗴 𝗰𝗹𝗶𝗲𝗻𝘁 𝗥𝗢𝗔𝗦 𝗼𝗳 𝟱𝟬-𝟱𝟬𝟬%+)
📊 $𝟯𝟭𝗠+ 𝘁𝗼𝘁𝗮𝗹 𝗮𝗱 𝘀𝗽𝗲𝗻𝗱 𝗺𝗮𝗻𝗮𝗴𝗲𝗱
💪 𝟮𝟯𝟬+ 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝘀𝗲𝗿𝘃𝗲𝗱
🕺 𝟯𝟬 𝗺𝗶𝗹𝗹𝗶𝗼𝗻𝗮𝗶𝗿𝗲𝘀 𝗺𝗮𝗱𝗲
🧠 𝟵+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗽𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲
Clear, concise, no-nonsense communicator. 🤝 I believe a great Google Ads manager relationship between you and me is built around excellent PPC ROI and exceptional communication.
As a Google Ads certified specialist, I focus on supporting US-based eCommerce and service business owners making 15-500K+ a month to scale their Google Ad account, and consistently 2-3x+ their Google Ads profit. 📈
—
📞 Invite me to your project on Upwork, or send me a direct message, and we can review and audit your Google Ads account together at no cost.
⬆️ You can expect the Google Ads optimization help you receive on our consultation to be earnestly valuable regardless of whether you choose to work with me.
—
Average Ranges of Google Ads Results I Generate:
🎯 Google Ads Qualified Leads Increased 2x - 10x+
🎯 Google Ads Return On Ad Spend - ROAS - Increased 50% - 500%+
🎯 Google Ads Total Profit Increased 200% - 300%+
—
❝ I cannot recommend Will and his team highly enough. If you’re looking for a strategic partner to elevate your online presence and drive tangible results, look no further! This team is truly a game-changer in the world of digital advertising. ❞
🗣 Chris Hansen - Founder - Life Skills Advocate (Executive Function Coaching)
—
Here’s why you’ll love my Google Ads management and PPC lead generation:
🔹 My communication skills are a priority. Expect to get a message back within 5-10 minutes. (Almost 24/7).
🔹 I’ve done this 100’s of times. If you can’t reasonably scale your Google Ads, I’ll tell you upfront and let you know why.
🔹 I deliver in-person reporting so you can ask questions and be fully aware of what you’re paying to Google Ads in ad spend, what you’re paying me and what exact measurable and quantitative result you get for every dollar you put in.
I’m the right Google Ads optimization specialist for you if…
✅ You have a product or service that people cannot stop talking about
✅ Your business makes enough money that your mother might think you deal drugs (15K+/month minimum)
✅ You don’t enjoy being personally hands-on with your Google Ads account
✅ You have had a poor experience with another Google Ads manager or agency (let’s fix that)
Examples of common client niches served include:
🔸 eCommerce Stores - Shopify - WooCommerce - Opencart - Magento - All Other Major eCommerce Platforms - Pet Industries & More
🔸 Service Based Businesses Of All Kinds - Doctors - Dentists - Psychologists - Coaches & Coaching - Accountants - Lawyers & Family Law Practitioners - eLearning
🔸 SaaS - B2B & B2C - Manufacturers - Fashion - Engineering - Architecture - AI & More
🔸 Real Estate - Health & Wellness - Healthcare - Jewelry - Mortgages
Examples of the types of work I commonly deliver includes:
🛠 Google Ads - Google Ads Setup - Google Ads Ongoing Campaign Management & Optimization - Google Ads Audits - Google Ads PPC - Google Ads Campaign Setup - Google Ads Media Buyer - Google Ads Banners - Google Ads Consultant Projects - Google Ads Coach Projects - Google Ads Design - Google Ads Keyword Research - Local Google Ads - Google Ads Marketing - Google Ads Writer - Google Ads SEO - Google Ads Training
🛠 Google Ads Grant Projects - Google Ads For Nonprofits
🛠 Google Ads Landing Pages
🛠 All Google Ads Networks Including: Google Ads Search Campaigns - Google Ads Display Campaigns - Google Ads Remarketing & Retargeting Campaigns - YouTube Ads - YouTube Google Ads
🛠 Anything a Google Ads Manager or Google Ads Specialist Could Help With!
🛠 Google Ads Shopping Ads - Google Merchant Center - PLA Campaigns
🛠 Google Ads Lead Generation
🛠 Google Ads Conversion Tracking Setup - Google Analytics - GA4 - Google Tag Manager - GTM - Google Ads Tracking
🛠 Google Ads Performance Max - PMAX - & ROAS Focused Campaigns
🛠 Search Engine Marketing Strategy
🛠 Google Ads Suspension Support
🛠 Pay Per Click Advertising - PPC Campaign Setup & Management
🛠 Google AdWords - Hubspot
🛠 Certified Google Ads Partner
If your project is related to Google Ads, digital marketing, PPC, SEO or Facebook Ads. I’ve got your back.
🙏 Thank you for learning about me. If you're ready to take your Google Ads to the next level, invite me to your job and let’s rock and roll. 🎸
William Arnett
—
❝ Great communication, cared for me and my business needs, would highly recommend to anyone looking for a trusted expert to help them with their business! ❞
🗣 Josef Visinski - Owner - Allagash Antlers
$13/hr
96%
Job Success
$100K+ earned
Available now
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👋 Hello, I am Sukhdeep S, a Senior Mobile App Developer with 10+ years of experience building reliable, scalable, and user-friendly mobile applications for iOS, Android, and cross-platform environments.
I specialize in React Native, Flutter, native iOS, native Android, React.js, Node.js, APIs, Firebase, cloud integrations, and admin panel development. I help startups, agencies, and businesses turn mobile app ideas into polished, production-ready applications with clean user flows, strong backend connectivity, and smooth performance.
My focus is not just writing code. I build mobile apps that are practical, easy to use, secure, and ready for real users.
📱 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲
✔ React Native app development
✔ Flutter app development
✔ Native iOS app development
✔ Native Android app development
✔ Hybrid and cross-platform mobile apps
✔ App redesign and feature upgrades
✔ Mobile app bug fixing and optimization
✔ App Store and Google Play deployment
✔ Mobile UI implementation from Figma
I can build new apps from scratch, improve existing apps, add new features, fix performance issues, or connect your app with backend systems and third-party services.
🧩 𝗧𝘆𝗽𝗲𝘀 𝗢𝗳 𝗔𝗽𝗽𝘀 𝗜 𝗖𝗮𝗻 𝗕𝘂𝗶𝗹𝗱
✔ On-demand service apps
✔ Delivery and logistics apps
✔ eCommerce mobile apps
✔ Booking and appointment apps
✔ Healthcare and telemedicine apps
✔ Fitness and wellness apps
✔ Learning and EdTech apps
✔ Real estate apps
✔ Social networking apps
✔ Marketplace apps
✔ FinTech and wallet apps
✔ Restaurant and food ordering apps
✔ Taxi and ride-booking apps
✔ Event and ticketing apps
✔ CRM and field staff apps
✔ Customer support apps
✔ Business automation apps
Whether your app is for customers, employees, drivers, vendors, admins, or service providers, I can help design and build the right mobile workflow.
⚛️ 𝗥𝗲𝗮𝗰𝘁 𝗡𝗮𝘁𝗶𝘃𝗲 & 𝗙𝗹𝘂𝘁𝘁𝗲𝗿
✔ Cross-platform iOS and Android apps
✔ Reusable components and clean architecture
✔ Navigation, tabs, drawers, and deep linking
✔ API integration with mobile apps
✔ Redux, Context API, Provider, Bloc, Riverpod
✔ Push notifications
✔ Firebase integration
✔ Offline storage and local database
✔ Image, video, file, and document upload
✔ Camera, gallery, location, maps, and device features
✔ Performance optimization for mobile apps
I build apps that feel smooth, look professional, and work properly across different screen sizes and devices.
🍏 𝗡𝗮𝘁𝗶𝘃𝗲 𝗶𝗢𝗦 & 𝗔𝗻𝗱𝗿𝗼𝗶𝗱
✔ Swift and SwiftUI for iOS
✔ Kotlin and Java for Android
✔ Native SDK integration
✔ App permissions and device APIs
✔ In-app purchases and subscriptions
✔ App Store and Play Store compliance
✔ Native performance improvements
✔ Crash fixing and app stability work
When a project needs platform-specific features or deeper native control, I can work directly with iOS and Android technologies.
🟢 𝗕𝗮𝗰𝗸𝗲𝗻𝗱, 𝗔𝗣𝗜 & 𝗔𝗱𝗺𝗶𝗻 𝗣𝗮𝗻𝗲𝗹 𝗦𝘂𝗽𝗽𝗼𝗿𝘁
✔ Node.js and Express.js backend development
✔ REST API development and integration
✔ Firebase backend and Firestore
✔ MongoDB, MySQL, PostgreSQL
✔ Authentication and user roles
✔ Admin panels using React.js and Next.js
✔ Dashboard, reporting, and user management
✔ Payment gateway integration
✔ Stripe, PayPal, Razorpay, Apple Pay, Google Pay
✔ Email, SMS, and notification workflows
✔ Third-party API integrations
I can build both the mobile app and the admin system needed to manage users, orders, bookings, payments, reports, content, notifications, and business operations.
🔧 𝗞𝗲𝘆 𝗙𝗲𝗮𝘁𝘂𝗿𝗲𝘀 𝗜 𝗛𝗮𝗻𝗱𝗹𝗲
✔ Login, signup, OTP, and social login
✔ User profiles and role-based access
✔ Booking and scheduling workflows
✔ Real-time chat and notifications
✔ GPS tracking and maps
✔ Payment and subscription systems
✔ Order and delivery management
✔ Ratings and reviews
✔ Wallet and transaction history
✔ File upload and media handling
✔ Analytics and reporting dashboards
✔ Multi-language app support
✔ App maintenance and version updates
🏆 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲
✔ 10+ years of mobile and web application experience
✔ Strong knowledge of React Native, Flutter, iOS, and Android
✔ Ability to handle app, backend, APIs, and admin panel workflows
✔ Clean, maintainable, and scalable code
✔ Practical understanding of real business apps
✔ Clear communication and reliable updates
✔ Focus on performance, security, and user experience
✔ Support for launch, testing, and post-launch improvements
📩 𝗟𝗲𝘁'𝘀 𝗪𝗼𝗿𝗸 𝗧𝗼𝗴𝗲𝘁𝗵𝗲𝗿
If you need a reliable mobile app developer for React Native, Flutter, iOS, Android, backend APIs, or admin panels, I would be happy to help.
Send me your app idea, design, requirement document, or existing app details, and I will suggest the best development approach.
𝐊𝐞𝐲 𝐒𝐤𝐢𝐥𝐥𝐬: React Native Developer, Flutter Developer, Mobile App Developer, iOS App Developer, Android App Developer, Swift, SwiftUI, Kotlin, React.js, Next.js, Node.js, Firebase, REST API, MongoDB, MySQL, PostgreSQL.
Associated with
Deftsoft
$10M+
earned
$30/hr
100%
Job Success
$70K+ earned
Available now
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I help businesses turn Salesforce into a powerful, revenue-driving system by optimizing processes, automating workflows, and building scalable solutions tailored to real business needs.
With 7+ years of hands-on Salesforce experience, I don’t just configure Salesforce, I design systems that improve efficiency, data quality, and team performance.
What I Can Do for You
Salesforce Setup & Administration
• User setup, roles, profiles, and permission sets
• Security model and access control optimization
• Clean and scalable org structure
Customization & Configuration
• Custom objects, fields, page layouts
• Validation rules and business logic
• Advanced automation using Flows, Process Builder, Workflow Rules
Process Automation
• Sales pipeline automation (Sales Cloud)
• Service workflows and case management (Service Cloud)
• Reduction of manual work through smart automation
Reports & Dashboards
• Custom reports for actionable insights
• Real-time dashboards for performance tracking
• KPI-driven analytics
Data Management
• Data cleanup and de-duplication
• Data validation and integrity
• Structured data imports and migrations
Integrations & Development
• API integrations with third-party tools (Outlook, QuickBooks, etc.)
• Custom development using Apex, Visualforce, Lightning
• JavaScript and HTML for UI enhancements
System Optimization
• Identify bottlenecks and inefficiencies
• Improve performance and usability
• Apply Salesforce best practices
Training & Support
• End-user onboarding and training
• Ongoing support and system guidance
• Improving user adoption
Why Clients Work With Me
• 7+ years of Salesforce experience
• Certified Salesforce Administrator
• Strong mix of Admin, Developer, and Architect expertise
• Focus on business outcomes, not just technical setup
• Proactive problem-solving approach
• Experience across multiple industries
Additional Technical Skills
• Python, Node.js, SQL
• Git, APIs, system integrations
• HTML5, CSS, JavaScript, jQuery
• PHP, WordPress
• Excel and data analysis
If you need to optimize Salesforce, automate workflows, improve reporting, or build a scalable CRM system, I can help.
Let’s connect and discuss your project.
Associated with
ZvirSolutions
$50K+
earned
United States
$150/hr
96%
Job Success
Available now
Offers consultations
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Whether you're a DTC ecom brand scaling past $50K per month, a legal intake operation chasing qualified case volume, or a business that just needs tracking and Google Ads to actually work, you don't need another ads manager. You need an operator who's been in the room.
I'm Dave. 16 years running paid media, $100M+ managed across Google, Meta, Microsoft, YouTube, TikTok, and DSPs. Top Rated Plus on Upwork with a 96% Job Success Score.
Where I do my best work:
• DTC ecommerce at scale. High-volume Shopping, PMax, and feed work where ROAS and contribution margin actually have to add up. Past clients include eZContacts, 1620 Workwear, Simply Seattle, and Econugenics.
• Legal lead gen. Intake campaigns measured on cost per qualified lead, not clicks. Tracking wired end to end so you know which spend produced signed cases, not just form fills. Active work across Mass Tort, Lemon Law, and MVA.
• Regulated health. Telemedicine, supplements, and DTC health. LegitScript-certified, ad policy fluent, built to keep spend live in categories where most accounts get suspended.
• Audits and tracking fixes. GA4, GTM, server-side, CAPI. Most accounts don't have a media problem, they have a post-click and tracking problem nobody diagnosed. Before scaling a dollar, the measurement has to be trustworthy. That's where I usually start, because it's almost never the bids.
You'll work directly with me. No account manager relaying instructions to a junior buyer. No rotating pod. The person you book the call with is the person logged into your account.
If you've got an account that needs serious attention, let's talk.
$55/hr
100%
Job Success
$90K+ earned
Offers consultations
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🏆 Top Rated Plus | 100% Job Success Score
If you need a Flutter Mobile App Developer or React Native Developer who delivers production-ready iOS and Android apps that perform under real user load, scale with your growth, and don't require constant hotfixes after launch, you're in the right place.
I'm a Flutter Mobile App Developer and React Native Developer with 6+ years of hands-on experience. I have shipped 30+ Flutter projects, dozens of React Native apps, and 250+ mobile and web products across 45 countries. Not prototypes. Real apps with real traffic, real edge cases, and real business logic behind them. As a Flutter Mobile App Developer and React Native Developer, I don't just write code, I own the outcome and I manage the project myself, so you're never left wondering where things stand.
What makes me different
Most developers hand off a working build and move on. I stay involved. Whether the job calls for a Flutter Mobile App Developer or a React Native Developer, I design architecture that fits your product long-term, write code your future team can actually read, and manage the project so you always know what's done, what's next, and what's at risk before it becomes a problem.
Services
As a Flutter Mobile App Developer I build cross-platform apps for iOS and Android from a single optimized codebase with 60fps performance. As a React Native Developer I build the same cross-platform reach when your team's stack, hiring plans, or existing codebase point toward React Native instead. Either way: custom mobile architecture designed for long-term scalability, backend and API integration including REST, GraphQL, WebSockets, and real-time data sync, payment gateway integration (Stripe, Apple Pay, Google Pay), legacy app rescue and architecture refactoring, CI/CD pipelines, and App Store and Google Play deployment management.
Results
Every project I deliver as a Flutter Mobile App Developer or React Native Developer is measured against real outcomes:
Up to 60% faster app load times
Up to 40% reduction in crash frequency
Up to 50% improvement in API reliability
40-60% improvement in overall app performance
30-45% reduction in crash rates after architecture refactoring
5x growth in active users sustained without downtime
By Industry
As a Flutter Mobile App Developer and React Native Developer I have worked across a wide range of industries with real production apps behind each one. SaaS is my primary focus with 35+ platforms shipped, from early-stage MVPs to enterprise-grade systems with complex subscription management and multi-tenant architecture. In Healthcare I have delivered 25+ mobile projects with a strong focus on HIPAA compliance, data privacy, and reliability. FinTech accounts for 25+ apps including secure payment systems, financial dashboards, and high-security data handling. Enterprise tools account for 20+ projects covering internal business automation and role management systems. EdTech accounts for 15+ builds including smooth media streaming and offline learning modes. Marketplace and eCommerce accounts for 15+ apps covering high-traffic catalog management and checkout optimization.
Tech Stack
Flutter, Dart, Bloc, Provider, Riverpod, React Native, TypeScript, Redux, REST, GraphQL, WebSockets, Firebase, Supabase, Stripe, Apple Pay, Google Pay, AWS, GCP, Docker, CI/CD, App Store, Google Play.
How I work
Discovery: defining product goals, user journeys, and technical constraints before writing a single line of code - including whether Flutter or React Native is the right call for your team. Architecture: designing state management, system logic, and backend integration layers built for scale. Development: clean code, pixel-perfect UI across all screen sizes, seamless API connectivity. Testing: rigorous validation of performance under load, crash rates, and cross-device compatibility. Launch: structured App Store and Google Play deployment with post-launch monitoring. I also handle project management myself on every engagement, so there's no handoff gap between the person writing the code and the person tracking the timeline.
What you get
A Flutter Mobile App Developer and React Native Developer who takes full ownership of architecture, code stability, and project delivery
Clear milestone breakdowns, no surprise delays
Clean documented code your future team can work with
Active project management from first sprint to final release
Post-launch support, not a handoff and goodbye
Ready to work with a Flutter Mobile App Developer or React Native Developer who builds solutions that scale, perform, and grow with your users? Send me a message and let's talk about your project.
P.S. Tired of developers who overpromise and underdeliver? Send me your project and let's have an honest conversation about what it actually takes to build it right - Flutter, React Native, or figuring out together which fits.
Associated with
🔺 Jett Develops | Full-Cycle Design and Development Company, $250M Raised by Clients
$500K+
earned
$25/hr
91%
Job Success
$40K+ earned
Available now
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Senior AI & Full-Stack Engineer | React, Next.js, Python, LLMs, RAG, AI Agents
Need an engineer who can build your entire AI product—not just the AI model or the backend?
I build production-ready AI applications from idea to deployment, combining modern full-stack engineering with LLMs, RAG pipelines, AI agents, and scalable cloud infrastructure. Whether you're building an AI SaaS, internal business platform, customer support agent, document intelligence system, or workflow automation tool, I deliver software that's reliable, maintainable, and ready for production.
Unlike teams that split frontend, backend, and AI across multiple developers, I own the complete product—from architecture and UI to APIs, AI integration, deployment, and ongoing optimisation.
I also work AI-augmented using Cursor, Claude Code, and GPT Codex, enabling faster development, rapid iterations, and high-quality code without sacrificing architecture, scalability, or maintainability.
AI & LLM Applications
* LLM-powered SaaS applications
* Retrieval-Augmented Generation (RAG)
* GraphRAG & Agentic RAG
* Semantic search & document intelligence
* AI copilots & enterprise knowledge systems
* GPT, Claude, Gemini, Llama, DeepSeek
* Pinecone, pgvector, Weaviate, Chroma, FAISS
AI Agents & Automation
* LangGraph, CrewAI, MCP
* Multi-agent systems
* Tool calling & workflow orchestration
* AI workflow automation
* Browser automation & intelligent agents
Voice AI
* Real-time AI voice assistants
* Whisper
* ElevenLabs
* Deepgram
* Twilio Voice
Full-Stack Development
* React, Next.js 15, TypeScript
* React Native & Expo
* Node.js, FastAPI, Django
* PostgreSQL, MongoDB, Redis, Supabase
* REST APIs & third-party integrations
Cloud & DevOps
* Docker
* Kubernetes
* AWS, GCP, Azure
* GitHub Actions
* CI/CD pipelines
* Production deployments
Healthcare & Enterprise Integrations
* HL7 & FHIR
* Mirth Connect
* EHR/EMR integrations
* Secure healthcare APIs
* Enterprise workflow automation
Why Clients Hire Me
✔ Build complete AI products—not just individual components
✔ Strong full-stack engineering combined with production AI expertise
✔ Scalable architecture designed for long-term growth
✔ Fast delivery using AI-assisted development while maintaining production-quality code
✔ Clear communication, practical technical decisions, and end-to-end ownership
If you're looking for someone who can design the architecture, build the product, integrate AI, and deploy it to production, let's discuss your project. I can usually review your requirements, suggest the right technical approach, and define a practical implementation plan in our first conversation.
$25/hr
100%
Job Success
Available now
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🏆 Top Rated | 100% Job Success | 5 Star Reviews ⭐⭐⭐⭐⭐
Looking for a GoHighLevel expert, n8n automation developer, and full stack engineer who actually delivers?
I'm Saad, a full stack developer and automation specialist with 10+ years of experience. I help agencies, SaaS founders, and growing businesses build systems that run without babysitting.
Here's what I do best:
GoHighLevel (GHL) CRM Automation
✅ Custom CRM setup, sub-account management, snapshot creation
✅ Sales funnel and pipeline automation
✅ GHL + Mailchimp, ManyChat, Twilio, and Stripe integrations
✅ API integrations and webhook connections
✅ White-label agency portal setup
n8n Workflow Automation & AI Agents
✅ Self-hosted n8n deployment and custom workflow builds
✅ AI agent development using OpenAI, LangChain, and vector databases
✅ RAG pipeline setup for document intelligence
✅ Voice bot and conversational AI automation
✅ Zapier and Make replacement builds
✅ CRM sync, lead capture, and notification automations
Full Stack Web Development (MERN & Golang)
✅ React.js frontends with NextJS, SSR, and Tailwind CSS
✅ NodeJS and Golang backend APIs and microservices
✅ REST and gRPC API development and integration
✅ MongoDB, PostgreSQL, Redis database architecture
✅ AWS, Google Cloud, Docker, and Kubernetes deployment
✅ SaaS application development from MVP to production
I don't disappear mid-project. I flag issues early, communicate clearly, and ship clean code that your next developer can read.
Send me a message, describe what you need and I'll tell you honestly if I'm the right fit.
Associated with
Syncjourney
$39/hr
100%
Job Success
Available now
Offers consultations
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❗️ We helped founders build MVPs that went on to raise investment and scale to thousands of users through top-tier Mobile App Development. With over 120 mobile & web projects successfully delivered, this is a strong case of how expert Mobile App Development strategy converts into measurable business traction.
📌 120+ Successfully Delivered Projects across 20+ countries centered around Mobile App Development 💪 8+ years building systems designed for scalable Mobile App Development ✅ 100% Job Success Score | 21,500+ Upwork hours | Expert-Vetted (Top 1%)
👋 Hey there! I am a Senior Mobile Developer and Full Stack Solution Architect. My core expertise is entirely dedicated to custom Mobile App Development. Every Mobile App Development project follows strict quality benchmarks. As a trusted technical partner, I turn your ideas into functional products through advanced Mobile App Development.
🍎 iOS App Development & iOS App Architecture
iOS App standards follow strict guidelines for an exceptional UX. Whether using Swift or React Native, every iOS App project starts with deep discovery. Our iOS App architecture ensures iOS App scalability and iOS App stability. From integrating Apple HealthKit and CarPlay to building custom iOS SDKs, iOS App delivery remains a top priority. Every iOS App milestone is tracked, and iOS App excellence drives everything we ship. Our comprehensive iOS App strategy ensures your iOS App succeeds.
🤖 Android Developer & Android App Development
Android Developer expertise is equally critical to our Mobile App Development. Every Android Developer standard I use aligns with the latest best practices. Utilizing Kotlin, Java, and React Native for robust performance, an experienced Android Developer handles complex integrations like AI assistants, VPN wrappers, and IoT smartwatch platforms. Android Developer scalability ensures your product is future-proof. Android Developer security and Android Developer architecture guarantee your product is ready for millions of downloads. A strong Android Developer culture drives top-tier results.
🙌 Cross-Platform Mobile App Development: Flutter & React Native
My expertise spans Flutter mobile app development and React Native solutions for comprehensive Mobile App Development. I have delivered full-scale cross-platform solutions for Healthcare & Wellness, FinTech, E-Commerce, and Social Media. Strategic React Native and Flutter implementation reduces time-to-market while keeping native-like Mobile App Development performance.
🎯 AI Mobile App Development
AI mobile app development plays a central role in modern scaling. I have successfully integrated ChatGPT API, DALL·E, and TensorFlow into production AI mobile app development projects, including an AI-driven vision platform. Scalable AI mobile app development strengthens your product's intelligence.
📈 Comprehensive Mobile App Development Services
As an Expert Mobile App Developer, I specialize in Custom Mobile App Development, Hybrid App Development, and Native Mobile App Development. My Mobile App Development process includes Mobile App UI/UX design, Mobile App testing, and App Store Deployment. Whether you need a Flutter Developer for cross-platform Mobile App Development or a dedicated iOS App Developer and Android Developer for native builds, my Mobile App Development firm-level expertise covers it all. Every Mobile App Development cycle integrates advanced API Integration and User Authentication for a secure Custom Mobile App.
🛠 Mobile App Development Tech Stack:
Mobile App Development: Swift, Kotlin, React Native, Flutter, Java, Dart
Backend for Mobile App Development: Node.js, Firebase, TypeScript, Laravel
DevOps for Mobile App Development: AWS, CI/CD pipelines, Docker
Integrations: API Integration, Apple HealthKit, PayPal, Custom SDKs
I am Business Manager and Product Manager at Kevych Solutions.
As your technical partner, I offer transparent communication, future-proof Mobile App Development architecture, and measurable results. 📩 If you're looking for a strategic partner for your next Mobile App Development project — message me now!
Highlighted Skills & Search Tags:
Full Stack Developer | Expert Full Stack Developer | Full Stack Mobile App Developer | Full Stack AI Developer | Expert Full Stack Mobile App Developer | Mobile Developer | iOS Developer | Android App Developer | Mobile App Development | Cross platform development | AI App Developer | AI App | App Developer | Mobile App Development Consultation | IT Consultation | iOS App Development | iOS App | Android App Development | Hybrid App development | Flutter | Firebase | Dart | Flutter Dart | Flutter Firebase | iOS Development | Smartphone | User Authentication | In App Purchases | API Integration
Associated with
Kevych Solutions
$49.99/hr
$5K earned
Available now
Offers consultations
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End of list.
Hello, I’m Mehmet, a Full Stack Developer, Front End Developer, and Web Developer focused on building scalable Web Applications, responsive Websites, SaaS platforms, customer portals, dashboards, e-commerce systems, APIs, and production-ready software.
I help startups, agencies, SaaS companies, and enterprise teams turn product requirements into reliable digital products. As a Full Stack Developer, I work across Front-End Development, backend development, Database Architecture, API Integration, Software Architecture & Design, testing, deployment, and Software Debugging.
Selected outcomes from my work include:
- Increased mobile sales by 45% with a React Native and Expo commerce application featuring Stripe payments and real-time inventory synchronization
- Reduced support tickets by 30% through a secure enterprise portal API with Nest.js, TypeScript, role-based access, and GraphQL subscriptions
- Reduced first-response times by 60% by integrating AI-powered chatbot functionality into a React Web Application
-Delivered sub-second chart rendering across datasets containing more than 1 million records using Next.js and D3.js
- Improved customer satisfaction by 25% within one month through faster APIs and real-time portal updates
- Replaced a monolithic system with microservices in weeks while improving OpenShift and Apigee authorization workflows
As a Full Stack Developer, I build products where the frontend, backend, database, APIs, and external services work together as one stable system. My Full-Stack Development work includes SaaS products, MVPs, portals, marketplaces, admin panels, booking platforms, internal tools, and data-driven applications.
As a Front End Developer, I create responsive and accessible interfaces using React, Next.js, JavaScript, TypeScript, Vue.js, Angular, HTML, HTML5, CSS, CSS3, Bootstrap, and jQuery. I translate Web Design and Adobe Photoshop assets into polished Website and Web Application experiences across desktop, tablet, and mobile devices.
As a Web Developer, I support both custom Web Development and established platforms. I build new Websites, improve existing systems, create custom functionality, and connect applications with payment services, CRMs, databases, APIs, and third-party tools.
My WordPress and WooCommerce work includes custom themes, plugin customization, checkout improvements, product functionality, Responsive Design, API Integration, performance improvements, and Software Debugging. I also modernize PHP, Laravel, WordPress, Vue.js, Angular, Bootstrap, and jQuery applications.
My backend stack includes Node.js, Python, PHP, Laravel, Express.js, Nest.js, REST APIs, GraphQL, SQL, and MySQL. I build authentication systems, business logic, database models, background processes, payment integrations, webhooks, and API-driven services.
My core services include:
- Full-Stack Development and Web Application Development
- Front-End Development with React, Next.js, Vue.js, Angular, JavaScript, HTML5, CSS3, and Bootstrap
- Backend Development with Node.js, Python, PHP, Laravel, Express.js, and Nest.js
- API Development and third-party API Integration
- Website development, Web Design implementation, and Responsive Design
- WordPress and WooCommerce development
- Database Architecture with SQL, MySQL, PostgreSQL, MongoDB, and Supabase
- Software Architecture & Design and technical modernization
- Software Debugging, performance optimization, and codebase improvements
- Git-based collaboration and structured Software Development workflows
I can build a new Website or Web Application from the ground up, join an active codebase, complete an unfinished product, improve frontend or backend performance, fix integration issues, or redesign an existing system.
My Full Stack Developer work connects every technical layer into one complete product. My Front End Developer work creates fast, responsive, and intuitive user experiences. My Web Developer work helps businesses launch and improve Websites and Web Applications for real users and business operations.
If you need a Full Stack Developer, Front End Developer, or Web Developer for React, Next.js, Node.js, JavaScript, Python, PHP, Laravel, WordPress, WooCommerce, API Integration, or custom Software Development, feel free to invite me to your project.
Associated with
Vizio AI
$900K+
earned