I build AI systems that take real work off your team's plate — contract review, lead follow-up, customer calls, content, compliance — and ship them in days, not months. Clients typically cut manual hours by half in the first month. PLATFORMS I'VE BUILT → ContractGPT — AI contract analysis with clause extraction, risk scoring, redline-style amendments, and a chat assistant trained on your own documents (Next.js, Claude, Pinecone, Supabase) → Legacy Prime — full construction-management platform: estimating, CRM, field ops, payments, and an AI assistant that logs expenses and books tasks by voice (React Native, tRPC, Stripe, Twilio, OpenAI) → AI Roleplay Training — voice-AI sales coach where reps practice live calls against realistic AI buyers, then get automatic, emotion-aware scoring and feedback (FastAPI, GPT-4, Deepgram, ElevenLabs) → Sales Intelligence Platform — enriches leads, researches accounts, drafts outreach, and runs AI qualification calls so your pipeline fills itself (Airtable, Vapi, n8n, Relevance AI) → AI Content Studio — end-to-end content creation and multi-platform publishing on autopilot (CrewAI, Make, FastAPI, AWS) Also built: an AI lead engine for real estate brokerages, an edtech platform across 8 standardized-exam tracks, a personal-styling AI with computer vision, a family-governance and estate-planning suite, and AI tools for legal, compliance, and healthcare teams. HOW I WORK You don't hand off a brief and wait three months for a black box. I work in fast, live sessions — you describe what you need, watch it take shape, and tell me what to change as I build. This AI-assisted "vibe coding" approach means real, functional software in days, refined until it fits how your business actually runs. WHAT I BUILD AI SaaS platforms with billing, admin dashboards, and role-based access AI agents and copilots (LangChain, CrewAI, custom orchestration) Voice and chat assistants for web, phone, WhatsApp, and Slack Workflow automation across the tools you already use (Make, n8n, Zapier) Full-stack web apps (Next.js, React, FastAPI, Node.js) Mobile apps (React Native, Flutter, Swift, Kotlin) Before AI, I spent 10+ years shipping production software — 25+ mobile apps across the App Store and Play Store, plus dozens of web platforms. So what I build for you is production-grade and built to scale, not a throwaway prototype. RESULTS 40% faster loan approvals with a GPT-4 underwriting integration 60% fewer manual review hours through KYC automation First paying users in 5 days for an AI SaaS MVP On-device ML latency cut from 800ms to 90ms 30% lower infrastructure cost after a serverless migration TECH STACK AI / LLM: OpenAI, Claude, LangChain, CrewAI, LlamaIndex, Pinecone Voice AI: Vapi, ElevenLabs, Deepgram, VoiceFlow Automation: Make, n8n, Zapier Frontend: Next.js, React, React Native, Flutter, Swift, Kotlin Backend: FastAPI, Node.js, Python, GraphQL Cloud & Data: AWS, Vercel, Supabase, Firebase, Docker Tell me what's eating your team's time and I'll tell you how I'd automate it. Send a message with your idea.

I help businesses turn ideas into scalable, revenue-generating web, mobile, and AI products that users love and teams can confidently grow. ⭐️ Top 𝟐% on Upwork ⭐️ 𝟏𝟏+ Years of Experience ⭐️ Focused on scalable architecture, high performance systems, and clean, maintainable code. 𝐑𝐞𝐜𝐞𝐧𝐭 𝐰𝐨𝐫𝐤 𝐬𝐩𝐚𝐧𝐬 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧-𝐠𝐫𝐚𝐝𝐞 𝐰𝐞𝐛, 𝐦𝐨𝐛𝐢𝐥𝐞, 𝐚𝐧𝐝 𝐀𝐈 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 𝐟𝐨𝐫 𝐠𝐥𝐨𝐛𝐚𝐥 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 𝐢𝐧 𝐟𝐢𝐧𝐭𝐞𝐜𝐡, 𝐡𝐞𝐚𝐥𝐭𝐡𝐜𝐚𝐫𝐞, 𝐭𝐫𝐚𝐯𝐞𝐥, 𝐚𝐧𝐝 𝐥𝐚𝐫𝐠𝐞-𝐬𝐜𝐚𝐥𝐞 𝐞-𝐜𝐨𝐦𝐦𝐞𝐫𝐜𝐞 𝐞𝐜𝐨𝐬𝐲𝐬𝐭𝐞𝐦𝐬. • Deliveroo (UK) – Food delivery platform • Marqeta (USA) – FinTech card issuing & payment infrastructure • BetterMe (USA / Global) – Health & fitness mobile coaching platform • GetYourGuide (Germany) – Travel booking & experience marketplace 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐒𝐞𝐫𝐯𝐞𝐝 FinTech • Healthcare • Logistics • E-Commerce • Real Estate • EdTech • SaaS • Marketplaces • IoT • Business Automation 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 React.js, Next.js, Vue.js, Angular, TypeScript, JavaScript (ES6+), Redux, Zustand, Tailwind CSS, Material UI, ShadCN, Bootstrap, HTML5, CSS3, Responsive Design, Progressive Web Apps (PWA) 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 Node.js, Express.js, NestJS, Python, Django, FastAPI, Flask, .NET Core, C#, Java, Spring Boot, PHP, Laravel, GraphQL, REST APIs, WebSockets 𝐌𝐨𝐛𝐢𝐥𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 React Native, Flutter, Swift, SwiftUI, Kotlin, Android SDK, iOS Development, Cross-Platform Mobile Applications 𝐀𝐈 & 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 OpenAI, GPT-4, Claude, Gemini, LangChain, LangGraph, CrewAI, AI Agents, RAG Systems, LLM Applications, Vector Databases, Pinecone, Weaviate, ChromaDB, AI Chatbots, AI Workflow Automation, Prompt Engineering 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬 AWS, Azure, Google Cloud (GCP), Docker, Kubernetes, Terraform, GitHub Actions, GitLab CI/CD, Jenkins, Serverless Architecture, Lambda, ECS, Cloud Functions 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬 PostgreSQL, MySQL, SQL Server, MongoDB, Redis, Firebase, DynamoDB, Elasticsearch, Supabase If you're looking for an architect who can take ownership of your product, make sound technical decisions, and build beyond the prototype stage, feel free to 𝐢𝐧𝐯𝐢𝐭𝐞 𝐦𝐞 to your project or send me a 𝐦𝐞𝐬𝐬𝐚𝐠𝐞. I'd be happy to discuss your goals and how I can help.

Upwork Expert Vetted Badge owner, which means among the top 1% of talents on Upwork. I have over 20 years of software development experiences working for leading tech companies such as Microsoft, Starbucks, Institute for Systems Biology. I'm passionate in software development and new technologies. Very quick learner and excellent team worker. Open-minded and can quickly fit into any environment and contribute to the projects. My experiences and visions will be a great value for any company. I'm a USA citizen. Self-motivated, energetic collaborator who thrives on working in a fast-paced environment with tight deadlines and have a desire to stay updated on current and new technologies. As a passionate full-stack developer with can-do attitude, I'm thrilled to leverage my technical experience to implement client's ideas into reality. I’m proud that my web development work has helped my clients to grow their businesses and generate more revenue. My strength is creativity and tenacity. I emphasize effective communication to gather client’s requirements and translate those into an engaging, effective and unique software solution with great architecture and high quality implementation is what has helped me obtain over 100 positive reviews. - Strong problem solving skills - Clear logic & Clean code - Smart development & accurate timeline - Effective and respectful communication & excellent teamwork - Responsive & Pixel-perfect fronted development My skill sets are • AI, Machine Learning, Big Data • Blockchain • Programming Languages: JavaScript/Typescript, Python, PHP, Java, .Net, C++ • Front-End Development: React.js, React Native, Angular, Vue.js, Next.js, Nuxt.js, jQuery, HTML, CSS., SCSS • Back-End Development: Node.js/Express framework, Django, Flask, Laravel, Java, .Net • Database Management: SQL/NOSQL databases • Could: Amazon Web Services (AWS), Azure, Google Cloud • Other: DevOps, Kubernetes, Docker, GIT Availability - Flexible in any time zone - 40+ hours per week - Bilingual Communication in English, Mandarin Chinese Thank you

Java Spring Boot full stack developer specializing in fintech platforms and payment systems - Stripe, Plaid, and custom payment gateway integrations for enterprise and growing startups. I build secure, scalable backend systems that handle real money: wire transfers, EFT payments, subscription billing, and bank integrations. My work sits at the intersection of clean Java architecture and financial compliance: Spring Security, ISO 20022, PCI-aware design, and AWS serverless infrastructure. My core focus is payment gateway integrations: Stripe integration, Plaid integration, Interac, and custom EFT/Wire flows built on Spring Boot microservices designed for high-volume transaction processing. I also deliver full fintech SaaS platforms from MVP to production-ready architecture, AWS serverless infrastructure using Lambda, Fargate, SQS/SNS and Aurora PostgreSQL, and React frontends connected to financial backends. How I work: I start with a technical audit or business analysis to map exact requirements before writing a line of code. Every integration is documented, tested with JUnit, and handed over with internal team training so you can maintain and extend it in-house. Recent work: Delivered a full Interac payment integration for a UK-based fintech expanding into Canada, launched in 20 days using Java microservices and ISO 20022 standards with zero post-launch issues. Separately scaled a B2B payment SaaS platform to handle 10x transaction volume using AWS serverless architecture, cutting infrastructure costs by 30%. If you're building a fintech platform, integrating a payment gateway, or need a reliable Java backend partner for the long term, let's talk.

If you are looking for a motivated, safe set of hands to take the weight of your project off your shoulders and work with you to get the job done right, then let’s have a chat. Here’s how: 1. Send me an Upwork message 2. On Upwork message, click on the green “Schedule a meeting” button, choose 30 minutes and I will confirm a time slot. 3. That way we can hop on a strategy call to discuss your project further and make sure we are a great fit together. I lived in Drexel HIll, PA. I am a motivated and creative US based freelancer with over 10 years of successful freelancing in multiple areas of Web & Mobile development. I have experience in ReactJS, NextJS, NodeJS, AngularJS, JavaScript, Laravel, CodeIgniter, Cake PHP, Rest APIs, and WordPress. Expert in React Native Mobile Applications Enterprise level Web | Mobile applications ✔ Detailed experiences are: 1) Backend Development • PHP - Laravel MVC, CodeIgniter, Cake PHP • Node.js - Express, Socket.io, Meteor • Python - Django, Flask • MYSQL, MongoDB, NoSQL, Firebase 2) Front-end Development • Angular, React.js, NextJS, Vue.js • CSS/SCSS, HTML, JavaScript, Jquery 3) iOS | Android app Development • Swift, Java, Kotlin, React Native, Ionic, Flutter • RxJava, RxSwift • MVP, MVVM My priorities are - - Best quality - Bug-free - Delivery in a timely manner - Developing an app, testing it, and making sure users won't have any problems when using the final product; - Helping to choose the best tools for analytics, testing, marketing, reporting, and more.

If your project is behind, unstable, or not scaling — I’m the developer you bring in to fix it and get it shipped. I help US startups and growing companies build fast, scalable, and reliable web applications — without the usual delays, miscommunication, or technical debt. I’m a Senior Full Stack Engineer with 12+ years of experience working with Ruby on Rails, Node.js, React.js, Next.js, NestJS, and Python, along with strong DevOps expertise on AWS. I’ve built and scaled SaaS platforms, fintech systems, marketplaces, and real-time applications. Impact I’ve delivered: • Scaled platforms to 100K+ users • Reduced API response times by 40–60% • Delivered MVPs in 4–8 weeks • Accelerated development 3–5x using AI-assisted workflows • Stabilized and improved production systems under real load I work comfortably in US time zones and communicate clearly with product, design, and engineering teams — no hand-holding needed. I leverage AI-assisted development using Claude Code, Cursor, GitHub Copilot, ChatGPT, and Google Gemini to move faster while maintaining clean, production-grade code. What I can help you with: • Full Stack Development (React, Next.js, Node.js, Rails) • Scalable APIs (REST, GraphQL, WebSockets) • SaaS & Marketplace platforms • AI integrations (LLMs, automation, AI features) • Real-time systems (chat, notifications, tracking) • Payments (Stripe, subscriptions, webhooks) • AWS, Docker, CI/CD, DevOps • Performance optimization & scaling • Fixing and stabilizing existing systems Selected Work: The Storefront – Marketplace platform Built and optimized core features using Rails + React, improving performance and scalability for high-volume listings. Mastermind – High-traffic learning platform Developed and scaled backend systems, supporting thousands of users during live launches and events. Loosid App – Social & subscription platform Built real-time features (chat, notifications) and integrated Stripe for subscriptions, improving engagement and reliability. I don’t just write code — I take ownership, solve problems, and ship. If you need someone who can step in, move fast, and deliver — let’s talk.

Most automation freelancers take weeks to deliver something that breaks in a month. I build AI automation and workflow systems that go live in 72 hours and keep running after I hand them off. ✅ 𝟒𝟎+ 𝐲𝐞𝐚𝐫𝐬 of development and operations experience applied to AI automation ✅ 𝐑𝐢𝐬𝐢𝐧𝐠 𝐓𝐚𝐥𝐞𝐧𝐭 on Upwork with 100% Job Success Score ✅ 𝐀𝐈 𝐚𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 delivered live in 72 hours, with full documentation and zero tech black box Ready to scope your automation? 𝐒𝐞𝐧𝐝 𝐦𝐞 𝐚 𝐦𝐞𝐬𝐬𝐚𝐠𝐞 and I will tell you exactly what I can build and how fast. I respond same day. I specialize in n8n automation, Make, and Zapier workflow systems that eliminate manual tasks, follow up leads automatically, and run business operations in the background without anyone babysitting them. My work covers AI agent development, voice agent systems, lead generation automation, CRM workflow automation, and multi-tool API integrations built to actually keep working after delivery. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 & 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 𝐒𝐭𝐚𝐜𝐤 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ▸ Workflow Automation: n8n, Make, Zapier, multi-step logic, cross-platform integrations ▸ AI Agent Development: GPT-4, GPT-5, LangChain, conversational AI, voice agent systems ▸ Voice AI: ElevenLabs TTS, speech-to-text pipelines, calendar booking, 24/7 call handling ▸ Lead Generation Automation: Apify scraping, AI-personalized outreach, CRM sync ▸ CRM and Sales Automation: lead routing, follow-up sequences, deal stage triggers ▸ Content and Ad Automation: AI-generated scripts, social posting workflows, ad copy pipelines ▸ API Integration: webhook orchestration, data sync, multi-tool connectivity I build n8n automation workflows, Make scenarios, and Zapier integrations that connect your CRM, email, calendar, and communication tools into a single automated system. Whether you need an AI voice agent that handles inbound calls and books appointments, a lead generation workflow that finds prospects and writes personalized outreach automatically, or a CRM automation that follows up every lead within minutes of contact, I scope it, build it, document it, and hand it off production-ready. Most automation breaks because it was built fast and never tested under real conditions. Every workflow I deliver includes error handling, failure alerts, and documentation your team can read and maintain without needing me on retainer. 𝐖𝐡𝐚𝐭 𝐜𝐥𝐢𝐞𝐧𝐭𝐬 𝐬𝐚𝐲 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ⭐⭐⭐⭐⭐ "A truly professional and dedicated automation expert... Highly recommended for all who need assistance with automation." - Mariia V. ⭐⭐⭐⭐⭐ "He took the time to clarify all my expectations and project details before starting... His communication skills are at a very high level." - Christal B. ⭐⭐⭐⭐⭐ "Very competent, knowledgeable, personable, easy to work with, very detail oriented, delivered a fine world class product." - Horace E. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 & 𝐔𝐬𝐞 𝐂𝐚𝐬𝐞𝐬 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ▸ Sales and Lead Generation: automated prospecting, outreach, and follow-up ▸ Customer Support: AI voice agents, FAQ handling, appointment booking ▸ Marketing: AI-generated ad scripts, social content workflows, campaign automation ▸ Operations: data sync, reporting pipelines, internal workflow automation ▸ Real Estate, Agencies, SaaS, and Service Businesses My n8n automation and AI agent work is particularly well suited to small and medium businesses that are growing faster than their manual processes can support. If your team is copying data between tools by hand, chasing leads manually, or running on workflows that exist only in someone's head, those are exactly the problems I fix with workflow automation built on n8n, Make, or Zapier. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝐌𝐲 𝐚𝐩𝐩𝐫𝐨𝐚𝐜𝐡 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Every automation engagement starts the same way: you tell me what you want to automate, what tools you are using, and what outcome you need. I map the cleanest path to get there, tell you exactly what I will build, and get to work. Most projects go live within 72 hours. Everything ships with full documentation so your team understands what was built and can maintain it without me. Not ready to commit to a full project yet? Start with my 2-hour money-back guaranteed trial. You will know within the first task whether we are a good fit. If not, you pay nothing. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📩 𝐋𝐄𝐓'𝐒 𝐁𝐔𝐈𝐋𝐃 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Tell me what is slowing your business down and I will tell you exactly how to fix it with automation. 𝐒𝐞𝐧𝐝 𝐦𝐞 𝐚 𝐦𝐞𝐬𝐬𝐚𝐠𝐞 and let us get started.

⭐MVP Delivery in 72 Hours Guarantee ⭐Certified Project Manager and Scrum Master ⭐Agile Master and Project Management Professional ⭐12+ years of experience in full-stack development ⭐5+ years of experience in product management ⭐Development and management of large-scale projects ⭐ Available to talk at all times ⭐Director of Rotaract International (Volunteering) ⭐ Areas of our Expertise/Specialization:⭐ ✔ Logistics / Transportation & Travel Platforms ✔Marketplace / Multi-Vendor(E-commerce) Marketplace ✔Education/Online Tutoring/ E-Learning/LMS ✔Real Estate / Property Management with IDX and MLS integration ✔Booking Management System ✔Healthcare /Telemedicine Platform ✔Inventory/Dashboard Management System ✔Job Board/Recruitment Platform ✔Enterprise Solution (ERP & CRM) ✔Finance Platform ✔Directory/Listing Platform ✔E-Commerce/Online Shop ✔Restaurant Management System I provide professional software engineering services and help customers achieve their business goals by coding, building a dev team, and filling expertise and technological gaps. ⭐Technologies we work with⭐ ✔ HTML5/CSS3/SCSS/LESS/Bootstrap(W3C standard) ✔ JavaScript (React JS, Next Js, Ajax, jQuery, Vue, Vuex, Angular) ✔ Mobile-friendly layout coding (Responsive design) ✔ UI / UX designing for your digital products ✔ Wireframing for UI/UX concepts ✔ PHP ( Framework like Laravel, Codeigniter, etc. ) ✔ Node.js ✔ CMS: WordPress, WooCommerce ✔ Restful API (Google APIs, Payment Processing, SSO Integration, Mailgun, Twitter, Facebook, Twilio, Apple News Publisher, Android, and iOS API) ✔ Database: MySQL, PostgreSQL, MongoDB, SQLite, MS SQL Database ✔ NoSQL: Redis, Mongo ✔ Payment Gateways: PayPal, Stripe, Braintree, Wirecard ✔ LAMP Stack (Linux, Apache, MySQL, PHP), MEAN (MongoDB, Express.js, Angular, and Node.js), MERN (MongoDB, Express.js, React, and Node.js) ✔ DevOps: Linux/Nginx, Terraform ✔CI/CD Automation (Git, GitHub, GitHub Actions) ✔ Mobile apps development (Flutter, React Native), Android and IOS apps ✔ Database Migration and New Development ✔ Web Services: AWS Server, Google Cloud, MS Azure My team's goal is to give you confidence that the development will be done according to your expectations, and even better. We will help when you are looking for a reliable developer or technical partner to make your business work. I appreciate that you have reviewed my profile. Thanks!

With over 20 years of extensive experience in software development, a strong foundation in a variety of programming languages, and a proven track record in delivering efficient and scalable software solutions, I am confident in my ability to contribute effectively to your team. I specialize in full stack development, data engineering, database design, cloud migration, API integrations, and enterprise application modernization. My main technical strengths include .NET, C#, React, Angular, SQL Server, PostgreSQL, AWS, Azure, ETL, SSIS, Power BI, Tableau, Docker, Kubernetes, and microservices. Throughout my career, I have worked with healthcare, fintech, government, aviation, and enterprise clients. I have built web applications from the ground up, optimized slow systems, designed data warehouses, created ETL pipelines, developed reporting dashboards, migrated legacy systems to modern cloud platforms, and led development teams through full project lifecycles. I can help with: • Full stack web application development • NET / C# backend development • React / Angular frontend development • SQL Server / PostgreSQL database design • ETL, SSIS, data warehouse, and reporting • AWS / Azure cloud deployment and migration • API integrations and microservices • Power BI, Tableau, and Grafana dashboards • Legacy system modernization and performance optimization I am comfortable working independently or as part of a team, and I can take a project from requirements gathering and architecture through development, testing, deployment, and ongoing support. My goal is always to build solutions that are secure, scalable, reliable, and easy to maintain.

I help startups and businesses build and scale reliable Flutter applications with clean architecture, optimized state management, and production-ready backend integration. Most Flutter apps struggle when they grow because of poor structure, unnecessary rebuilds, and weak backend design. I focus on building apps that stay fast and maintainable even as features scale. What I do: - Build production-ready Flutter apps (iOS + Android) - Design scalable architecture (Clean Architecture with Bloc/Riverpod/Provider) - Integrate Firebase, Supabase, REST APIs, and LLM APIs - Implement payments (Stripe / in-app purchases) - Optimize performance (reduce rebuilds, improve responsiveness) What I focus on in every project: - Clean, maintainable codebase built for long-term scaling - Smooth UI performance under real-world load - Proper separation of business logic and UI - Backend structure that supports growth (not just MVP) Recent work focus: - Startup MVP development - AI-powered mobile apps (chat, automation, API-driven features) - Refactoring and scaling existing Flutter codebases - Performance optimization for production apps If you’re building or scaling a mobile product, I can help you structure it properly so it performs well today and continues scaling without rewrites.