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$45/hr
100%
Job Success
$200K+ earned
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✅Let's start with a quick consultation or a small initial milestone so you can see I'm the right fit.
🔥PROVEN BUSINESS IMPACT
- 7+ Years of engineering and building enterprise-grade applications as a .NET developer in high-stakes environments.
- ROI-Driven Development: $2.5M+ in verified client impact, leveraging my background as a full stack developer to increase revenue and reduce operational overhead through expert software development.
- Performance Engineering: 90% faster data processing and 75% lower infrastructure costs achieved through advanced Microservices and optimization as a senior .NET developer proficient in ASP.NET Core.
- Scalability & Growth: Scaled platforms to 30,000+ active users; consistently cut time-to-market for MVPs by 4–6 weeks by applying the expertise of a seasoned full stack developer.
- Legacy Modernization: Proven track record as a .NET developer migrating legacy systems - including .NET Framework and .NET Compact Framework - to modern architectures, resulting in 40% fewer bugs.
- Efficiency Gains: Reduced admin friction by 45% through custom-built automation, demonstrating the value a dedicated full-stack developer brings to complex SQL-driven workflows.
👨🏻💻THE PARTNERSHIP EXPERIENCE
- Full-Stack Authority: Microsoft-certified expertise spanning the entire development lifecycle, from robust C# backend architecture to dynamic frontend interfaces.
- Versatile Tech Lead: Whether you need a full stack developer for MVP creation, a .NET developer for enterprise scale, or a java developer for backend migration, I bridge the gap between technical requirements and business goals. I also offer the flexibility of a java developer for interoperability, and the analytical power of a python developer for data-heavy tasks.
- Agile & Transparent: High-velocity delivery using JIRA/Asana, providing the clear, consistent communication expected from a senior full-stack developer.
⚙️ ENGINEERING CAPABILITIES
- Backend Architecture: Building high-throughput systems with C#, ASP.NET Core, and ASP.NET Web API. I also offer the flexibility of a java developer to integrate with diverse existing ecosystems.
- Modern Frontend: Crafting dynamic UI/UX using Angular, React, and JavaScript. My deep experience with HTML5, CSS 3, and Bootstrap ensures highly responsive, mobile-first designs.
- Cloud & Infrastructure: End-to-end management of cloud-native ecosystems (Azure/AWS) and containerized deployment pipelines as a lead .NET developer.
- Data & Performance: Advanced database design using Microsoft SQL Server and complex SQL queries to cut data latencies by up to 50%.
- Cross-Functional Skills: I bring the architectural discipline of a .NET developer - including ASP.NET MVC and ASP.NET expertise - to every project, while also offering the modern tooling mindset of a full stack developer using Node.js.
🏆 DOMAIN SPECIALTIES
- FinTech: Secure ledger systems and transaction management built by a specialized .NET developer.
- Healthcare: HIPAA-compliant patient management portals and telehealth solutions.
- LegalTech/Enterprise: Complex document workflows and granular RBAC.
⚒️ TECHNICAL TOOLSET
- The .NET Stack: .NET Framework, .NET Compact Framework, ASP.NET Core, ASP.NET Web API, ASP.NET MVC, ASP.NET, C#.
- Frontend Mastery: Angular, React, JavaScript, HTML5, CSS 3, Bootstrap, jQuery.
- Data Layer: Microsoft SQL Server, SQL, Redis, MongoDB, ElasticSearch.
- General Stack: Node.js, Python, Docker, CI/CD.
- Engineering Standard: Clean Architecture, SOLID Principles, and an uncompromising focus on software development quality.
📩If you’re looking for a reliable and experienced .NET Developer and full stack development partner who understands both technology and business impact, I’d be happy to connect - feel free to invite me for an interview!
$60/hr
100%
Job Success
$100K+ earned
Available now
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As a forward-thinking Senior Engineer and Team Leader with over two decades of experience, I work as a full stack developer specializing in Video Streaming and real-time communication solutions based on WebRTC. I combine strong architecture thinking with hands-on delivery, acting both as a technical leader and a practical full stack web developer who understands real product needs and builds scalable WebRTC-powered systems.
Today, my focus as a full stack developer includes the strategic application of advanced AI technologies alongside WebRTC-based real-time communication platforms. I actively work with OpenAI APIs, Whisper for speech recognition, LLaMA2 for open-source large language models, and LangChain for building AI-driven workflows. This positions me as a full stack developer AI who can integrate intelligence directly into real-world WebRTC video and streaming products.
Throughout my career as a full stack developer, I’ve contributed to Telemedicine, Online Education, and Real-time Entertainment by building WebRTC-powered communication platforms. I’ve led teams delivering webinar platforms, live chat systems, and complex real-time applications, acting both as a senior web developer and system architect who ensures scalability, security, and long-term maintainability for WebRTC infrastructures.
In AI-focused projects, I operate as a full stack developer who bridges data, logic, and user experience inside WebRTC-enabled applications. My team and I integrate conversational AI, speech-to-text, and knowledge-driven systems using OpenAI, Whisper, and LLaMA2. With LangChain, we design intelligent pipelines that automate workflows and data processing, enhancing WebRTC communication platforms with AI-driven capabilities.
WebRTC remains a core part of my work as a full stack developer, especially for building high-performance real-time systems. We design everything from low-latency WebRTC infrastructure to complete applications, delivering solutions that work seamlessly across web and mobile. This includes building scalable video streaming app architectures capable of handling thousands of concurrent users through WebRTC.
As a full stack developer, I also provide consulting and development services across North America and Europe, helping companies design and build WebRTC-based video communication platforms. I work with companies in Entertainment, E-Learning, Healthcare, and Finance. Depending on project needs, I act as a React developer, Wordpress developer, or mobile app developer while implementing scalable WebRTC solutions.
Our services as a full stack developer team include system architecture, UI/UX design, and custom development of WebRTC streaming and real-time communication platforms. We build modern interfaces, robust back-ends, and real-time systems, including secure WebRTC video stream delivery for live and on-demand use cases.
We have worked with most of the major Webinar and Online Education platforms on the market, delivering solutions as a full stack developer team that understands both the business and technical sides of WebRTC video streaming products. We frequently modernize existing platforms and migrate legacy systems to scalable cloud-based architectures built around WebRTC technologies.
As a full stack developer, I’ve led the creation of webinar systems, live chat apps, WebRTC video conferencing platforms, real-time video auctions, messengers, e-learning platforms, telemedicine solutions, dating apps, Twitch-like platforms, TikTok-style apps, VoD systems, and live shopping platforms. Many of these solutions rely on modern stacks including full stack developer React and full stack Lavarel approaches integrated with WebRTC.
Beyond development, I support clients as a full stack developer with load testing and performance optimization for large-scale WebRTC streaming systems. My background across front-end, back-end, databases, and cloud platforms allows me to lead projects end-to-end and deliver reliable, production-ready WebRTC platforms.
I invite you to collaborate with me as a full stack developer who understands AI, WebRTC, and scalable real-time product development. Together, we can build innovative WebRTC-powered solutions that align with your business goals and grow with your users.
Associated with
Trembit
$6K+
earned
$20/hr
100%
Job Success
$70K+ earned
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🏆 Top Rated on Upwork
⭐ 100% Job Success
⭐ 55+ Successful Projects
⭐ 3,200+ Hours Worked
⭐ 12+ Years Experience
⭐ Long-term Client Relationships
For over 12 years I've helped founders transform ideas into successful software products. I don't simply build features. I help architect applications, solve techniSenior Full-Stack Developer specializing in React, Next.js, and Node.js. I build SaaS products and AI-powered web apps for startups and growing companies, Top Rated on Upwork with a 100% Job Success Score across 55+ projects and 3,200+ hours delivered.
If you're looking for someone who can take ownership of your entire application instead of just writing code, you're in the right place.
Where I do my best work:
• SaaS platforms — dashboards, admin panels, billing, multi-tenant apps
• AI integration — OpenAI/LLM features, chatbots, RAG, and workflow automation
• React & Next.js frontends — fast, responsive, and accessible
• Node.js / TypeScript backends — REST and GraphQL APIs that scale
• Stripe and payment integrations, third-party APIs, and legacy modernization
A few things I've shipped: an e-learning platform, a real-estate platform with intelligent matchmaking and real-time messaging, a CRM for a logistics company, and an AI-powered fintech app. Clients describe my work as reliable, clearly communicated, and built to last — you can read their reviews below.
The way I work is simple: I plan before I build, I write clean and maintainable code, and I verify before calling anything done, so you get stability, not surprises. I respond within a few hours and keep you updated the whole way through.
If you're launching a new SaaS product, adding AI features, or scaling an existing app, send me a message with what you're working on and I'll tell you honestly how I can help.
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WHY CLIENTS KEEP COMING BACK
Clients appreciate that I communicate clearly, meet deadlines, and think like a product owner rather than simply completing assigned tasks.
I ask the right questions before development begins, identify potential risks early, and recommend solutions that save both time and money.
Many of my clients stay with me for months or years because they know I care about building reliable software that continues to perform as their business grows.
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CLIENT FEEDBACK
★★★★★
"Rajkumari is an exceptional Full Stack Engineer. She delivered exactly what we needed ahead of schedule, communicated clearly throughout the project, and made the entire development process smooth and stress-free. We'd happily work with her again."
★★★★★
"One of the best developers we've worked with. Rajkumari made excellent architectural decisions, wrote clean, maintainable code, and proactively suggested improvements that made the product more scalable."
★★★★★
"Highly skilled, dependable, and always available when needed. Rajkumari quickly resolved complex technical challenges that previous developers couldn't solve and consistently delivered high-quality solutions."
★★★★★
"Rajkumari optimized our SaaS platform, significantly improving performance, scalability, and user experience. Her technical expertise and attention to detail exceeded our expectations."
★★★★★
"Professional, knowledgeable, and easy to collaborate with. Rajkumari took complete ownership of the project, provided valuable technical guidance, and consistently deliver
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1. What types of projects do you specialize in?
I specialize in building scalable web applications, SaaS platforms, AI-powered products, mobile applications, and custom business automation solutions. My expertise includes React, Next.js, Node.js, Python, Flutter, Laravel, Supabase, PostgreSQL, AWS, and OpenAI integrations.
2. Can you work with an existing codebase?
Yes. Most of my projects involve improving or extending existing applications. I begin with a code review, identify technical debt and bottlenecks, and then implement solutions while maintaining code quality and minimizing risk.
3. How do you ensure code quality?
I follow clean architecture principles, modular development, code reviews, Git workflows, testing, documentation, and performance optimization. My focus is writing maintainable code that can scale as your business grows.
4. Have you built AI-powered applications?
Yes. I've developed AI solutions using OpenAI, LangChain, vector databases, RAG pipelines, AI chatbots, document processing, workflow automation, and intelligent business applications integrated with existing platforms.
5. Do you provide UI/UX design as well?
Yes. I work with modern design systems, responsive UI, Figma designs, and conversion-focused user experiences. I can redesign existing products.
Associated with
Expertinasia Pvt. Ltd.
$100K+
earned
$20/hr
100%
Job Success
$200K+ earned
Available now
Offers consultations
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🚀 𝐖𝐞𝐛𝐬𝐢𝐭𝐞 𝐃𝐞𝐬𝐢𝐠𝐧, 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 & 𝐀𝐈 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 𝐄𝐱𝐩𝐞𝐫𝐭 | 𝐖𝐨𝐫𝐝𝐏𝐫𝐞𝐬𝐬 | 𝐒𝐡𝐨𝐩𝐢𝐟𝐲 | 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 | 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 | 𝐏𝐇𝐏 | 𝐖𝐞𝐛𝐟𝐥𝐨𝐰 | 𝐖𝐢𝐱 | 𝐀𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧
Hi, I help startups, small businesses, and growing companies build high-performance websites, mobile apps, SaaS platforms, and AI-powered solutions that are visually appealing, scalable, and optimized for growth.
With 10+ years of experience in Website Development, Mobile App Development, Full-Stack Engineering, UI/UX Design, and Artificial Intelligence solutions, I specialize in building modern digital products that improve customer engagement, automate workflows, and drive business growth.
🌐 Website Design & Development Services
• Website Design (UI/UX Design)
• WordPress Development (Elementor, Custom Themes)
• Shopify Store Development
• Webflow Development
• Wix & Squarespace Websites
• Framer Websites
• Landing Page Design
• Website Redesign & Optimization
• Custom Web Applications
• eCommerce Development
• API Integration & Automation
📱 Mobile App Development Services
• iOS & Android App Development
• Flutter App Development
• React Native Development
• Cross-Platform App Development
• MVP Development
• SaaS Applications
• Marketplace Apps
• Booking & Scheduling Apps
• Healthcare & Fitness Apps
• Food Ordering Apps
• Logistics & Delivery Apps
• Real Estate Apps
• Admin Dashboards & Portals
🤖 AI Development & Automation
• AI-Powered Web & Mobile Applications
• OpenAI / ChatGPT Integration
• AI Chatbots & Virtual Assistants
• AI Customer Support Systems
• AI Content Generation
• AI Workflow Automation
• AI Knowledge Base Solutions
• Document Processing & OCR
• AI Search & Recommendation Systems
• AI Analytics & Reporting
• Voice AI Integration
• Custom AI Agents
• LLM-Powered Applications
• Business Process Automation
💻 Technologies & Platforms
Website Platforms:
WordPress • Shopify • Webflow • Wix • Squarespace • Framer
Frontend:
HTML5 • CSS3 • JavaScript • React • Next.js • TypeScript
Backend:
Node.js • PHP • Laravel • Express.js • REST API • GraphQL
Mobile:
Flutter • React Native • Firebase • Supabase
AI & Automation:
OpenAI • ChatGPT • Claude AI • Gemini • LangChain • AI Agents • Prompt Engineering • RAG Systems
Database:
MySQL • PostgreSQL • MongoDB • Firebase Firestore
Design:
Figma • Adobe XD • UI/UX Design • Wireframing • Prototyping
🎯 Industries Served
E-commerce • SaaS • Healthcare • Education
Real Estate • Construction • Travel & Tourism
Finance • Logistics • Marketplace Platforms
Legal Tech • Fitness • Professional Services
Startups • Local Businesses • Enterprise Solutions
⭐ Why Clients Hire Me
✔ 10+ Years of Development Experience
✔ Website, Mobile App & AI Expertise
✔ Full-Stack Development Capabilities
✔ Modern UI/UX Design Skills
✔ Scalable Architecture & Clean Code
✔ AI Automation & Business Optimization
✔ SEO-Friendly & Conversion-Focused Solutions
✔ Reliable Communication & On-Time Delivery
Whether you need a business website, eCommerce platform, mobile app, SaaS product, AI chatbot, marketplace, CRM, automation workflow, or custom AI-powered solution, I can help transform your vision into a successful digital product.
📩 Let's discuss your project and build something exceptional together.
Thanks,
Puneesh
Associated with
𝗭𝗼𝗽𝘁𝗮𝗹® Expert-Vetted Talent🏅
$1M+
earned
$30/hr
96%
Job Success
$100K+ earned
Available now
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𝗛𝗶, 𝗜’𝗺 𝗦𝗮𝗮𝗱 𝗮𝗻𝗱 𝗜’𝗺 𝗽𝗮𝘀𝘀𝗶𝗼𝗻𝗮𝘁𝗲 𝗮𝗯𝗼𝘂𝘁 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝘆𝗼𝘂 𝗮 𝗽𝗿𝗼𝗱𝘂𝗰𝘁 𝘁𝗵𝗮𝘁 𝘆𝗼𝘂𝗿 𝘂𝘀𝗲𝗿𝘀 𝘄𝗼𝗻’𝘁 𝗯𝗲 𝗮𝗯𝗹𝗲 𝘁𝗼 𝗹𝗶𝘃𝗲 𝘄𝗶𝘁𝗵𝗼𝘂𝘁. 𝗠𝘆 𝗺𝗼𝘀𝘁 𝗿𝗲𝗰𝗲𝗻𝘁 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝘄𝗮𝘀 𝗗𝗲𝗹𝗮𝘆𝗻𝗼 (𝗠𝘆 𝗘𝗮𝘀𝘆 𝗿𝗲𝘁𝘂𝗿𝗻). 𝗧𝗵𝗶𝘀 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺 𝗵𝗮𝘀 𝗲𝗻𝗮𝗯𝗹𝗲𝗱 𝘁𝗵𝗼𝘂𝘀𝗮𝗻𝗱𝘀 𝗼𝗳 𝗲-𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗲 𝗰𝘂𝘀𝘁𝗼𝗺𝗲𝗿𝘀 𝗶𝗻 𝗚𝗲𝗿𝗺𝗮𝗻𝘆 𝘁𝗼 𝗿𝗲𝘁𝘂𝗿𝗻 𝗶𝘁𝗲𝗺𝘀 𝗶𝗻 𝗮 𝗳𝗿𝗶𝗰𝘁𝗶𝗼𝗻𝗹𝗲𝘀𝘀 𝘄𝗮𝘆. 𝗢𝘂𝗿 𝗰𝗹𝗶𝗲𝗻𝘁 𝘄𝗮𝘀 𝗮𝗯𝗹𝗲 𝘁𝗼 𝗿𝗮𝗶𝘀𝗲 $ 𝟮.𝟱𝗺 𝗶𝗻 𝘀𝗲𝗲𝗱 𝗳𝘂𝗻𝗱𝗶𝗻𝗴 𝗮𝘀 𝗮 𝗱𝗶𝗿𝗲𝗰𝘁 𝗿𝗲𝘀𝘂𝗹𝘁 𝗼𝗳 𝗱𝗲𝗺𝗼𝗶𝗻𝗴 𝘁𝗵𝗲𝗶𝗿 𝗠𝗩𝗣.
I'm results-oriented and product-driven. I love learning new things and constantly strive to find the most efficient ways to get things done better and faster.
What Makes Me Unique?
🎯 I treat your business as my own because your growth is pivotal to the success of our partnership. Every engagement that I take on is wholehearted and I give it my all to make your idea a triumph.
🎯 I’m not motivated by the size of your company, but rather by the size of the challenge that you want to take on.
🎯 As a startup founder I love to see brilliant ideas come to life with code. I will do everything to ensure that your MVP is battle ready and ready to receive measurable user feedback.
Invite me to your Upwork job to book a free consultation call, I’m always excited to learn about the problem you’re trying to solve.
During my time at Sony, I helped build some of the highest traffic fan experiences for global sports teams and associations. A highlight of my time there was building the video portal for the ICC Cricket World Cup 2019. This portal received over 1 billion video views in the space of 14 days, which was a testament to the best practices we followed while developing.
“Thank you and your team a lot. You deliver over and above what is promised. We are super happy to work with you guys.” Anil Ay (CEO Delayno GMBH)
Why you’ll wish we started working earlier together:
✅ Transparency and visibility is core to the way I work. You can expect access to JIRA, GitHub and Trello where I track our projects and code so you can see your vision come to life in real time.
✅ I have a deep focus on wireframing and prototyping. This way both me and you will have a clear understanding of what we are going to build. 90% of projects fail due to a lack of communication at this stage and I believe this is something that I have mastered.
✅ I write readable maintainable and well documented code that can easily be taken over by an internal development team. If you are not ready to hire a team, We can work as a dedicated team of developers to maintain and enhance your product.
I’m an Expert at:
⚡ Web Development
⚡ On Page SEO
⚡ Native App Development
⚡ Front End Development
⚡ Back End Development
⚡ Cross Platform Development
⚡ UI/UX Design
⚡ Manual Testing
⚡ Automated Testing
⚡ Wireframing
⚡ Prototyping
⚡ Graphic Design
⚡ Logo Design
My Tech Stack Includes:
🏅 Laravel
🏅 CodeIgniter
🏅 Apache
🏅 MySQL
🏅 PHP
🏅 JavaScript
🏅 Vue.js
🏅 React.js
🏅 MongoDB
🏅 Express.js
🏅 Node.js
🏅 CSS3
🏅 Bootstrap
🏅 Kotlin
🏅 Java
🏅 Dart (Flutter)
🏅 Swift
Thank you for taking up the time to learn about my skills and experiences. Please feel free to invite me to your relevant jobs on Upwork. I’m excited to get started! – Saad Rahman
“Working with Saad was perfect, it felt like a natural extension of my in house team – (Alex Ingals CEO Room Six )
$20/hr
75%
Job Success
$80K+ earned
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I’m a 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿, 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿, and 𝗔𝗜 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 with 𝟳+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 turning bold ideas into real-world solutions. I specialize in building cross platform experiences with 𝗙𝗹𝘂𝘁𝘁𝗲𝗿 and 𝗥𝗲𝗮𝗰𝘁 𝗡𝗮𝘁𝗶𝘃𝗲, as well as native 𝗶𝗢𝗦, workflow automation, Low-code development and 𝗔𝗻𝗱𝗿𝗼𝗶𝗱 𝗮𝗽𝗽𝘀 using 𝗦𝘄𝗶𝗳𝘁. Every line of code I write is reliable, fast, and user-focused.
I’ve successfully delivered 𝟭𝟱+ 𝗹𝗶𝘃𝗲 𝗺𝗼𝗯𝗶𝗹𝗲 𝗮𝗽𝗽𝘀 𝗮𝗻𝗱 𝗦𝗮𝗮𝗦 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀, including notable projects like Opty Sleep and Chaser the Network, scaling products to 𝟱𝟬𝗞+ 𝗮𝗰𝘁𝗶𝘃𝗲 𝘂𝘀𝗲𝗿𝘀, improving 𝘂𝘀𝗲𝗿 𝗿𝗲𝘁𝗲𝗻𝘁𝗶𝗼𝗻 𝗯𝘆 𝗼𝘃𝗲𝗿 𝟮𝟱%, and supporting 𝗔𝗜-𝗽𝗼𝘄𝗲𝗿𝗲𝗱 𝗠𝗩𝗣𝘀 𝘁𝗵𝗮𝘁 𝘀𝗲𝗰𝘂𝗿𝗲𝗱 $𝟖𝟓𝟎𝗞+ 𝗶𝗻 𝘀𝗲𝗲𝗱 𝗳𝘂𝗻𝗱𝗶𝗻𝗴.
From Firebase backend and MongoDB databases to secure authentication and API integration,
I ensure your apps perform seamlessly. I dedicate 30+ hours per week to client projects, supporting everything from rapid prototyping to mission-critical debugging and full end-to-end development that grows with your vision.
𝗖𝗼𝗿𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲
✅ 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁
𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱:
React.js & Next.js 15: Expertise in App Router, Server Components, and SSR/SSG for SEO and performance.
TypeScript: Type-safe, maintainable codebases for large-scale applications.
Angular & Vue.js (Nuxt.js): Custom-built dashboards and reactive SPAs.
State Management: Redux Toolkit, TanStack Query (React Query), and Zustand.
Styling: Tailwind CSS, Material UI, and Framer Motion for polished UX.
𝗕𝗮𝗰𝗸𝗲𝗻𝗱 & 𝗔𝗣𝗜 𝗗𝗲𝘀𝗶𝗴𝗻:
Node.js & Express / NestJS: Building event-driven, scalable microservices.
Python (Django, FastAPI, Flask): High-speed backends optimized for AI/ML processing.
Java Spring Boot: Reliable, secure, and performant enterprise-level systems.
API Protocols: RESTful API design, GraphQL (Apollo), and real-time WebSockets (Socket io).
𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲 & 𝗜𝗻𝗳𝗼𝗿𝗺𝗮𝘁𝗶𝗼𝗻 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲:
NoSQL Solutions: MongoDB, Firebase (Realtime & Firestore), Cassandra.
SQL / Relational: PostgreSQL (with pgvector for AI), MySQL, MS SQL Server.
Caching & Optimization: Redis and Memcached for ultra-low latency.
𝗖𝗹𝗼𝘂𝗱, 𝗗𝗲𝘃𝗢𝗽𝘀 & 𝗠𝗼𝗱𝗲𝗿𝗻 𝗗𝗲𝗽𝗹𝗼𝘆𝗺𝗲𝗻𝘁:
Providers: AWS (EC2, Lambda, S3, SageMaker), Google Cloud (GCP), and Azure.
Infrastructure: Docker containerization and Kubernetes (K8s) orchestration.
CI/CD & Testing: GitHub Actions, Jenkins, and automated testing with Jest and Cypress.
✅ 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁
Cross-platform: React Native & Flutter
Native iOS: Swift/SwiftUI
Offline functionality & API integration
User-centric UI/UX design
✅ 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗦𝘁𝗿𝗲𝗻𝗴𝘁𝗵𝘀
Mobile: React Native, Flutter, Dart, Swift
Web / Backend: JavaScript, Node.js, ExpressJS, TypeScript, Laravel, PHP, MERN Stack
Microservices & third-party API integration (AWS)
Databases: SQLite, MySQL, MongoDB, PostgreSQL, Firebase Realtime & Firestore, Redis
Latest trends: AR, IoT, Firmware Programming (ESP32)
𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗜’𝘃𝗲 𝗧𝗿𝗮𝗻𝘀𝗳𝗼𝗿𝗺𝗲𝗱
⭐ Healthcare | ⭐ Fintech | ⭐ E-commerce | ⭐ Real Estate | ⭐ Entertainment
𝗪𝗵𝘆 𝗣𝗮𝗿𝘁𝗻𝗲𝗿𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲
I treat every project as unique, aligning your business goals with technical execution. My solutions are:
Scalable — grow seamlessly with your business
Maintainable — clean, organized code
Balanced — smart feature vs. budget decisions
User-focused — designed to turn users into brand advocates
Check out my portfolio for case studies! If you don’t see your exact use case, let’s chat - I love solving complex, custom challenges.
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𝐎𝐭𝐡𝐞𝐫𝐬: Flutter App Development, Dart Programming, Firebase, Supabase, Cross-Platform App Development, Hybrid App Development, Mobile App Development, iOS App Development, Android App Development, Flutter for Web Development, Mobile App UI/UX Design, API Integration, Payment Integration, Third party SDK/Tools Integration, Software Development, User Authentication, In-App Purchases, Mobile Solutions, Firebase Studio, UI/UX Design, Figma, AI App Development, AI Integrations, Bluetooth low energy (BLE) SDK, Full-Stack App Development Services, Agile Development, App Store Deployment, Printer SDK Integration, Offline-first app development, State management, GitHub Actions, Azure DevOps, CI/CD Pipeline, Fastlane, TestFlight, Unit testing, automation, Clean Code, Solution Architect, VS Code, Android Studio, XCode, Transporter, Code review, Code optimization, Mobile Design, Enterprise Mobile App Development, SaaS App, Custom App Development, Smartphone app development, React.js, Next.js 15, TypeScript, MERN Stack, Node.js, Express, NestJS, Python FastAPI, Django, Java Spring Boot, REST/GraphQL API Design, SQL, PostgreSQL, MongoDB, Redis, AWS Lambda, Docker, Kubernetes, Microservices, Serverless, Stripe.
Associated with
TECHVADERS
$70K+
earned
$40/hr
94%
Job Success
$100K+ earned
Available now
Start of list.
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Tired of cookie-cutter designs? ❌ Let's create something truly unique together. 🚀 As a passionate UI/UX Designer and Full-Stack Developer, I specialize in turning your ideas into stunning, user-friendly digital experiences. 🎨 With a focus on providing creative and professional digital solutions , e.g.,E-commerce, Edtech, Fintech, Healthcare etc, I'm committed to delivering results that exceed your expectations. 🎉
Skills:
-UX/UI Design: Figma, Adobe XD, Sketch, Wireframing, Prototyping, User Testing 🧠
-Web Development: HTML, CSS, JavaScript, React, Node.js, WordPress, Shopify Webflow, Wix, Squarespace & MERN Stack 🛠️
-Mobile App Development: React Native, Flutter, Swift, Dart, Java (iOS, Android )📱
-Other Graphic design services.🎨
Let's Talk About Your Project:
-What are your goals? 🤔
-Who is your target audience? 🎯
-What unique features do you envision? ✨
Together, we can create something truly special. 🎉
My Approach:
Deep Dive: Understanding your business and target audience. 🔍
Ideation: Brainstorming innovative solutions. 💡
Design: Creating visually appealing and user-friendly interfaces. 🎨
Development: Building robust and scalable applications. 🏗️
Testing: Ensuring a seamless user experience. ✅
Launch: Bringing your vision to life. 🚀
Why Choose Me?
Passion and Creativity: I love what I do and bring a fresh perspective to every project. ❤️
Attention to Detail: Every pixel matters. I'm committed to delivering high-quality work. 🔍
Client-Centric Approach: Your satisfaction is my top priority. 😊
Continuous Learning: I stay up-to-date with the latest trends and technologies. 📚
Amazing Team: I can also become exceptional project manager since I have own team as well for all kinds of projects
Ready to bring your digital vision to life? Let's connect! 🤝
Associated with
Koderspedia
$60K+
earned
$70/hr
100%
Job Success
$400K+ earned
Available now
Offers consultations
Start of list.
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I am an expert-vetted AI Engineer and automation specialist with over 10 years of experience designing and delivering intelligent, production-ready AI solutions for startups, enterprises, and public-listed companies worldwide.
My core focus is on AI automation, Agentic AI systems, Retrieval-Augmented Generation (RAG), and Knowledge Graph–driven architectures that help businesses scale operations, unlock insights from data, and automate complex decision-making processes.
I combine deep AI system design expertise with a strong full-stack engineering background, allowing me to take AI solutions from concept → architecture → deployment → scale with reliability and security.
What I Specialize In
✅ AI & Intelligent Systems
AI Automation & Workflow Orchestration
Agentic AI (Multi-Agent Systems, Autonomous AI Agents)
Retrieval-Augmented Generation (RAG)
LLM Integration (OpenAI, Anthropic, Open-Source LLMs)
Knowledge Graph Design & Implementation
Vector Databases & Semantic Search
AI Chatbots & AI Assistants (Enterprise-grade)
AI-Powered Decision Support Systems
✅ Backend & AI Infrastructure
API-first AI architectures
Cloud-native AI deployments (AWS, Azure, GCP)
Data pipelines for AI & ML workflows
Scalable microservices for AI applications
Secure AI systems & enterprise integrations
✅ Full-Stack Engineering (Supporting AI Products)
Modern Web Applications (React, MERN/MEAN)
Backend systems for AI-driven platforms
Real-time dashboards & AI interfaces
Mobile apps integrated with AI services
Past Achievements
Designed and deployed AI-driven automation systems for startups and enterprise clients.
Successfully set up outsourcing and AI-enabled back-office operations for Australian public-listed companies.
Built an award-winning mobile application, now enhanced with intelligent content discovery features.
Helped teams transition from traditional software to AI-first product architectures.
Project Management & Delivery
End-to-end AI solution ownership (Discovery → MVP → Production)
Agile / Scrum project leadership
Cross-functional collaboration with data, product, and business teams
Clear documentation, testing, and maintainability focus
Why Work With Me
AI solutions that solve real business problems, not just demos
Strong balance of AI expertise + engineering discipline
Proven experience with scalable, enterprise-grade systems
Clear communication and long-term partnership mindset
👉 If you’re looking to build AI agents, automate workflows, implement RAG pipelines, or leverage Knowledge Graphs to power intelligent applications — I’m the right partner for you.
Tags
AI Automation | Agentic AI | AI Agents | Retrieval-Augmented Generation (RAG) | Knowledge Graphs | LLM Integration | Vector Databases | Semantic Search | AI Chatbots | AI Assistants | Machine Learning Systems | AI Architecture | Full-Stack AI Development | Cloud AI (AWS, Azure, GCP) | API Integration | Business Process Automation | React | MERN Stack | MEAN Stack | Mobile App Development | Scalable AI Systems | Enterprise AI Solutions
$15/hr
100%
Job Success
$100K+ earned
Available now
Start of list.
End of list.
Looking for a developer who can build your mobile app, SaaS platform, or AI-powered product from concept to launch?
I help startups, founders, and businesses develop scalable mobile applications, SaaS platforms, and full-stack web solutions that deliver exceptional user experiences, automate business processes, and scale with your growth. With 10+ years of experience, I build production-ready products not just prototypes.
What I Build
• Cross-Platform Mobile Applications (iOS & Android)
• AI-Powered Mobile & Web Applications
• SaaS Platforms & Startup MVPs
• Custom Business Applications
• Admin Dashboards & CRM/ERP Systems
• AI Agents & Workflow Automation
• API Development & Third-Party Integrations
• Backend Architecture & Scalable APIs
• Performance Optimization & Application Modernization
Mobile App Development
• Flutter & Dart Development
• Native iOS & Android Features
• Firebase Integration
• Push Notifications
• Authentication & Security
• Real-Time Applications
• Payment Gateway Integration
• Offline Data Synchronization
• Responsive UI/UX
• High-Performance Mobile Architecture
Full Stack Development
Frontend: React.js • Next.js • JavaScript • TypeScript
Backend: Node.js • Express.js • Laravel • PHP • Python
Mobile: Flutter • Dart • Kotlin • Swift
Database: PostgreSQL • MySQL • MongoDB • Firebase
Cloud & Integrations
AWS • REST APIs • Stripe • PayPal • Google APIs • Firebase
AI & Automation Expertise
Artificial Intelligence is becoming an essential part of modern applications, and I help businesses integrate AI where it creates real value.
• AI Agents & Intelligent Assistants
• OpenAI / ChatGPT Integration
• Claude AI Integration
• Google Gemini Integration
• LLM-Powered Applications
• AI Chatbots
• AI Workflow Automation
• OCR & Intelligent Document Processing
• AI Search & Recommendation Systems
• Prompt Engineering
• AI API Integrations
• Business Process Automation
I've successfully delivered solutions across SaaS, Healthcare, FinTech, E-commerce, Real Estate, Logistics, Enterprise Software, Marketplaces, and Startup MVPs, helping clients launch faster, improve operational efficiency, and build products that are ready to scale.
✔ $100K+ Earned on Upwork
✔ 100% Job Success Score
✔ 10+ Years of Professional Experience
✔ Long-Term Client Relationships
✔ End-to-End Product Development
✔ Clean, Scalable & Maintainable Code
I don't just build mobile apps—I help businesses create products that users love, perform reliably, and are designed for long-term growth. From architecture and development to deployment, optimization, and ongoing support, I take ownership of the entire development lifecycle.
Whether you need a Flutter mobile app, AI-powered application, startup MVP, SaaS platform, or custom full-stack solution, I'm ready to help turn your vision into a successful product.
Let's build something exceptional together.
Associated with
Brain Technosys Pvt. Ltd.
$3M+
earned
$35/hr
100%
Job Success
$100K+ earned
Available now
Offers consultations
Start of list.
End of list.
Full Stack Developer SaaS focused on turning complex product ideas into stable, scalable platforms
Recent Client Results:
✔️ launch SaaS products in 6-10 weeks
✔️ improve API performance by 30-45%
✔️ reduce manual operations by 40-60%
✔️ build platforms ready to support 10k+ users.
As a Full Stack Developer React Node and SaaS Developer I help startups and established businesses. I bring 16+ years in software development, 225+ delivered products and 9+ years of hands-on Node.js experience.
As a Certified Full Stack Developer React Node and Web Full Stack React Developer, I focus on business outcomes first: launching SaaS MVPs 30–40% faster, improving release stability, building scalable architecture, and reducing costly rework as products grow. My experience as a Full Stack React JS specialist allows me to deliver production-ready solutions with React.js, Node.js, Next.js, Nest.js, and modern JavaScript Developer workflows, supporting platforms with 10k+ users, 99.9% uptime targets, and integrations across APIs, payments, CRMs, and AI tools.
As a Backend Developer Nest.js with strong TypeScript Backend Development skills, I design maintainable server-side application architecture, secure APIs, and clean business logic for SaaS, internal tools, marketplaces, and custom platforms. As a Node js Developer, Nodejs Developer, and Nodejs Backend Developer, I use Node.js to simplify complex workflows, improve backend stability by 30–45%, and support products built on both SQL and NoSQL databases. My Typescript Nodejs background helps teams move 25–35% faster with modular services, readable code, and easier long-term maintenance. I also build advanced integrations with Stripe, third-party services, and node.js graphql solutions for scalable product ecosystems, including platforms with 10k+ users, 99.9% uptime targets, and 20+ API/payment/CRM integrations.
I’m a Full Stack Developer React Node with deep experience in scalable web application development across SaaS platforms, CRM systems, dashboards, admin panels, internal tools, and custom business products. My React js Node js work is focused on shipping fast, usable, and maintainable solutions that support real business goals.
As a React Developer and Full Stack Developer React Node, I build responsive, scalable interfaces using React, JavaScript, Node.js, and Next.js. My work as a React JS Developer and React JS / Next.js / NestJS Developer focuses on creating fast, user-friendly products that improve usability, support growth, and reduce friction across the customer journey. I also work as a React Native Developer ( Full Stack Developer SaaS ) when a product needs mobile-first extensions or companion app experiences aligned with the main platform.
As a Full stack AI SaaS developer, I help businesses with scalable SaaS Projects, Edtech Products with dashboards and payment flows, advanced e-commerce solution beyond CMS limits, Corporate Websites with strong backend logic, marketplace platforms with secure transactions, Authentication and Security with JWT-based access control, API Development and Integration, GraphDB, REST API, node.js graphql, CRM Development, Payment Gateways Stripe Paypal Liqpay, Database Management & Optimization and ongoing Deployment & Maintenance.
I also bring practical experience with PHP, Laravel, Python, Vue.js, Angular, React, Node.js, full stack developer supabase react, full stack react native spring boot, JavaScript, MySQL, WordPress, Tailwind CSS, Bootstrap, HTML, HTML5, CSS and CSS 3,
TypeScript, Redux, jQuery, Responsive Design, Web Design, PHP, MongoDB, Next.js python full stack developer, full stack developer ai, full stack developer react, full stack developer shopify
My work covers full stack node.js react for modern Web Application products, including custom API development and API Integration, while Git supports a clean and reliable delivery workflow. I also bring strong Web Design awareness, helping create interfaces that are not only functional, but also responsive, polished and user-friendly.
👉If you need a Full Stack Web Developer who can launch faster, improve performance, stabilize architecture, and build for long-term growth - let’s discuss your product.
Associated with
Malevich Studio
$300K+
earned