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$36/hr
100%
Job Success
$1M+ earned
Available now
Offers consultations
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Karapet P.
has worked
.
15+ Years Experience • 35,100+ Verified Upwork Hours • 120+ Completed Projects • $1M+ Earned • Top Rated Plus • 100% Job Success
I'm a Python React Full Stack Developer helping startups, founders, and established businesses build SaaS platforms, AI applications, marketplaces, enterprise software, and custom web applications from MVP to production.
Why clients hire me
Python React Full Stack Developer → 35,100+ verified Upwork hours
Python Full Stack Developer → 120+ successfully completed Upwork projects
Web Application Developer → 85+ SaaS products, MVPs, marketplaces, dashboards, and enterprise platforms delivered
SaaS Developer → 40+ successful product launches
AI Developer → 24+ AI-powered platforms and automation projects
Full Stack Development → 15+ years of commercial software engineering
API Integration → 300+ third-party integrations completed
React Developer → 50+ production web applications
Python Developer → 50+ backend systems built and maintained
Django Developer → 45+ scalable SaaS applications
Business Results
Helped clients raise $3M+ in investment after product launches.
Built products that later achieved 3 acquisitions.
Developed platforms serving 500K+ users.
Built business software used by 1,000+ companies and organizations.
Automated workflows saving clients 3000+ hours of manual work.
Reduced infrastructure and operational costs by over $800.000.
Improved application performance by an average of 40%.
Increased platform scalability to support 10MM+ daily users.
Integrated 300+ APIs, including OpenAI, Stripe, PayPal, Twilio, Shopify, Salesforce, HubSpot, Google, and many others.
Delivered 40+ long-term software modernization projects.
Selected Product Experience
DogVacay → Contributed from the earliest product stages through its acquisition by Rover.
CompTool → Built from scratch. Now serving 1,000+ business customers.
FairyGodBoss → Developed the core platform through early growth and Series A.
ReviewRamp → Helped build the platform from day one through acquisition.
Technical Expertise
Backend
Python, Django, FastAPI, Flask, Node.js, Express.js, NestJS, REST API, GraphQL, API Integration, WebSockets, Authentication, OAuth, JWT, Microservices, Workflow Automation, PostgreSQL, MySQL, MongoDB, Redis.
Frontend
React, Next.js, TypeScript, JavaScript, Vue.js, Angular, HTML5, CSS3, Tailwind CSS, Responsive Design, SPA, SSR.
AI Development
OpenAI, GPT, AI Integration, AI Agent Development, LLM Applications, RAG, Vector Databases, Workflow Automation, Intelligent Search.
Cloud & Infrastructure
Amazon Web Services (AWS), Docker, Kubernetes, CI/CD, GitHub Actions, GitLab CI, Cloud Infrastructure, Production Deployments.
Industries
Artificial Intelligence, Healthcare, HR & Compensation, Legal Tech, Marketing Technology, Data Engineering, Property Management, Marketplace Platforms, Cybersecurity, Workforce Management.
If you're looking for a Python React Full Stack Developer, Python Full Stack Developer, Web Application Developer, or SaaS Developer to build, modernize, or scale your next product, I'd be happy to discuss your project.
Profile updated on 08 14 2026
Associated with
Scrumly
$2M+
earned
$55/hr
100%
Job Success
$400K+ earned
Available now
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Nazar R.
has worked
.
Only complex projects, no fixed-price based contracts.
⭐️⭐️⭐️⭐️⭐️ "Anybody who gets the opportunity to work with Nazar will be not only satisfied but thrilled. He's humble, smart, capable. Definitely hire again."
Hey — what are you working on? Maybe I can help 🙂
I usually jump in at different stages of a project:
🚀 Build products from scratch (idea → flows → UI → full dev)
🛠 Upgrade / refactor existing systems
⚙️ DevOps, server setup & scaling
🕸 Scraping, data extraction & pipelines
💳 Payment integrations (Stripe, PayPal, etc.)
🔗 API integrations (Google APIs, third-party services)
…and more depending on what you need
About me:
I have 20 years of experience building:
✔ Websites (custom or CMS-based)
✔ Web apps & SaaS platforms
✔ Data-driven systems
I’ve worked across fintech, healthcare, retail, logistics, edtech, and more.
Typical projects:
✔ CRM / ERP systems
✔ AI-powered platforms
✔ Data & analytics tools
✔ Web & mobile apps
✔ IoT solutions
✔ Legacy system upgrades
AI stuff I do (real-world, not just demos):
🤖 AI chatbots & AI agents (support, internal tools, automation)
🧠 RAG pipelines (connect LLMs to docs, DBs, APIs)
📊 Predictive analytics (forecasting, anomaly detection)
🔍 Semantic search & vector DBs
🗣 Speech AI (STT, TTS, voice agents)
👁 Computer Vision
⚙️ AI automation workflows (multi-step agents, business processes)
🧪 Fine-tuning, evaluation & MLOps pipelines
Tech stack..
Backend:
- Python (Django, Flask, FastAPI, Tornado)
- Node.js (MEAN / MERN stacks)
- PHP (Laravel, CodeIgniter, CakePHP)
Frontend:
- React, Angular, Vue
- HTML5, CSS3, JS (jQuery, AJAX, etc.)
- Responsive, mobile-friendly, cross-browser layouts
- Bootstrap, Tachyons
Data & DBs:
- PostgreSQL, MySQL, MongoDB
- Data pipelines, transfer, processing
Other:
- REST APIs, third-party integrations
- Payment systems (Stripe, PayPal, Braintree, etc.)
- Scrapy + custom scraping solutions
- Cloud (AWS/GCP), deployment, infra
---------------
If you’ve got an idea (or something half-built and messy), I can help you figure out how to actually ship it without over engineering.
Happy to jump on a quick 30-min call, understand your goals, and map out next steps.
Just ping me 👍
--------------
Python, Django, mysql, Postgres, flask, fast api, ai chatbot, scrapy, data extraction, data scraping
AI Chatbot, AI Agent Development, AI App development, Chatbot Development, Generative AI, MLOps, Artificial Intelligence, Machine Learning, AI Development, AI Bot
---------------
Node.js, Express.js, NestJS, Next.js, TypeScript, JavaScript, MongoDB, PostgreSQL, MySQL, GraphQL, REST API, Prisma, Sequelize, Redis, WebSockets, Socket, API Integration, Microservices, Serverless, AWS Lambda, Docker
Backend Development, Full-Stack Development, API Development, Real-time Applications, Microservices Architecture, Cloud Development, Scalable Systems, SaaS Development, Web App Development, System Design
Associated with
Synergy Way LTD
$20K+
earned
$17/hr
100%
Job Success
$90K+ earned
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Pawan Kumar A.
has worked
.
𝐈 𝐡𝐞𝐥𝐩 𝐬𝐭𝐚𝐫𝐭𝐮𝐩𝐬 𝐚𝐧𝐝 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬𝐞𝐬 𝐛𝐮𝐢𝐥𝐝 𝐀𝐈-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐰𝐞𝐛 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 𝐭𝐡𝐚𝐭 𝐚𝐫𝐞 𝐟𝐚𝐬𝐭, 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞, 𝐚𝐧𝐝 𝐫𝐞𝐚𝐝𝐲 𝐟𝐨𝐫 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧.
Using Next.js, React, Python, and Node.js, I build SaaS MVPs, dashboards, internal tools, and customer-facing products with practical AI features such as RAG chatbots, AI agents, document Q&A, workflow automation, and LLM integrations.
If you need someone who can handle both the product engineering and the AI implementation,
𝐈 𝐜𝐚𝐧 𝐡𝐞𝐥𝐩 𝐰𝐢𝐭𝐡:
- Full-stack web apps with Next.js / React / Node.js / Python
- AI features using OpenAI, RAG pipelines, embeddings, vector search, and chat interfaces
- SaaS MVP development and rapid feature delivery
- API integrations, backend architecture, authentication, databases, and deployments
- Debugging, performance optimization, and scaling existing products
𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐮𝐬𝐮𝐚𝐥𝐥𝐲 𝐡𝐢𝐫𝐞 𝐦𝐞 𝐰𝐡𝐞𝐧 𝐭𝐡𝐞𝐲 𝐧𝐞𝐞𝐝:
- A working MVP shipped quickly
- AI added to an existing app in a practical way
- A developer who can think in terms of product outcomes, not just code
I focus on clean architecture, reliable communication, and production-ready delivery.
If you’re building an AI SaaS product, improving an existing platform, or need a developer to turn an idea into a usable product, feel free to invite me to your job.
Associated with
Krishna Innovative Software Pvt. Ltd
$5M+
earned
$65/hr
100%
Job Success
$2M+ earned
Available now
Offers consultations
Start of list.
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Roy V.
has worked
.
Hey, a real person will read your message, ask useful questions, and stay involved in the work - not just send you an AI-generated reply.
I’m a Full Stack Developer, SaaS Developer and Backend Developer focused on building production-ready software that holds up under real-world usage. My work sits at the intersection of software developer, web developer, and SaaS platform builder, with a strong backend-first mindset and deep attention to scalability, performance, and long-term maintainability.
As a Full Stack Developer, I take ownership of systems end-to-end, pairing robust backend architecture with clean, modern interfaces. My frontend work is typically React-based and I often collaborate with or replace traditional React developer or web developer setups by owning both frontend and backend in a single, coherent system. While I’ve previously worked as a WordPress developer and integrated WordPress-based sites into custom platforms, my current focus is on custom SaaS and API-driven systems rather than CMS-centric builds.
As a SaaS Developer, I help companies design, build and scale SaaS products, internal tools and API-driven web applications intended for long-term use. My experience as both a Backend Developer and software developer allows me to think beyond features and focus on architecture, reliability and operational stability from day one. Many of the platforms I build support internal teams, customer dashboards and multi-role workflows where permissions, data integrity and business rules are critical.
In my day-to-day work as a Backend Developer, I design and implement backend services, APIs and data models that power SaaS platforms, complex web applications and mobile-connected systems. I regularly work with Node.js and Python, drawing on my background as a Python developer to build scalable services, background jobs and asynchronous workflows that perform reliably in production.
As a Full Stack Developer, I ensure these backend systems integrate cleanly with frontend applications, mobile extensions and third-party APIs. When required, I support frontend and mobile app developer workflows using React and React Native. This end-to-end ownership is a key reason clients bring me in as a Full Stack Developer rather than splitting work across multiple roles.
A significant portion of my work as a SaaS Developer and Backend Developer involves building internal platforms, dashboards and API-first systems that integrate external services. In these projects, I often collaborate closely with product, growth, or analytics teams, including teams focused on SaaS marketing by designing clean data pipelines, event tracking and backend logic that supports experimentation, reporting and lifecycle insights.
When projects require AI-powered functionality, I bring hands-on experience integrating AI into backend systems. While my primary role remains Full Stack Developer and Backend Developer, I regularly implement AI-enabled workflows, data processing pipelines and LLM-driven features inside SaaS platforms. This allows me, as a SaaS Developer, to deliver AI functionality that is reliable, observable and cost-controlled rather than experimental.
Clients typically work with me when they need:
- a Full Stack Developer who can own frontend and backend
- a SaaS Developer who understands long-term scalability constraints
- a Backend Developer experienced with real production systems
- mobile app developer and React developer experience as a software developer
- backend services built with Node.js or Python by an experienced Python developer
- web applications with complex workflows and business rules from a senior web developer
- API-driven architectures and third-party integrations
- SaaS platforms designed to support growth, analytics and SaaS marketing data needs
- MVPs that can realistically evolve into long-term SaaS products
A large part of my work as a Full Stack Developer, SaaS Developer and Backend Developer focuses on:
- multi-role dashboards and internal tools
- authentication, authorization and permissions
- API-first backend system design
- integrations with external platforms, including legacy CMS or WordPress-based systems when required
My core work as a Backend Developer and Full Stack Developer covers:
- backend services built with Node.js and Python
- APIs, background jobs and integrations
- databases such as PostgreSQL
- modern stacks using tools like Supabase
- AI-enabled backend features where they add real business value
I regularly work on MVP builds and early-stage products as a SaaS Developer, with strong focus on solid backend foundations and sensible scaling paths. Based on scope and timing, I work hands-on as a Full Stack Developer, SaaS Developer and Backend Developer and when useful, involve specialists from my team.
Long-term results come from clarity and intentional system design. I focus on delivering software that teams can confidently run, maintain and scale.
Associated with
Interactivated Solutions - Top Rated Plus Agency
$3M+
earned
$10/hr
100%
Job Success
$40K+ earned
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Ravi K.
has worked
.
Are you looking for an experienced Full Stack Python Developer with mastery in Django, ReactJS, React Native, Flask, and NextJS, who can transform your web application ideas into high-performing solutions? Your search ends here! With over 15 years of hands-on experience, I specialize in building robust, scalable, and user-friendly SaaS applications that seamlessly integrate cutting-edge technologies.
🚀 What Sets Me Apart 🚀
✔️ Python Pioneer: I build powerful and dynamic web applications using Python, adapting its versatility to your business needs.
✔️ Django, Flask & FastAPI Maestro: Leveraging the power of Django, Flask, and FastAPI, I craft secure, scalable, and high-performance web applications that excel in any environment.
✔️ RESTful API Expert: Designing and developing efficient RESTful APIs to ensure smooth communication across systems and applications, enhancing functionality.
✔️ SQL Magician: Skilled in SQL and database management, I ensure secure, organized, and optimized data storage for your application, ensuring scalability and reliability.
✔️ React JS & Next JS Revolutionary: I develop fast, responsive, and dynamic ReactJS user interfaces, and create server-side rendered web apps with NextJS, offering seamless user experiences.
✔️ React Native Specialist: Creating cross-platform mobile applications with React Native, ensuring high performance and smooth user interfaces on both iOS and Android devices.
✔️ Shopify Developer: Expert in building and customizing Shopify stores to ensure optimal e-commerce performance, focusing on user experience and scalability.
✔️ Deployment Dynamo: I excel at deploying applications to production environments with expertise in AWS, Heroku, and other cloud platforms, ensuring smooth transitions and continuous integration.
✔️ GitHub Guru: Skilled in version control using GitHub, ensuring efficient project management, collaboration, and code tracking.
✔️ Socket Sorcerer: Implementing real-time communication using websockets, enabling live updates and enhancing user engagement across your applications.
💁🏽 Why Partner with Me?
Clear communication, from initial consultation to project completion.
On-time delivery, ensuring your deadlines are always met.
Scalable, secure, and user-friendly solutions built to grow with your business.
Post-deployment support, ensuring everything runs smoothly long after launch.
If you’re ready to work with a Full Stack Python Developer who combines technical expertise with a deep understanding of SaaS, AI, and modern web technologies, let’s connect! I’m here to turn your ideas into reality—whether it's a web app, mobile solution, or e-commerce platform. 🌟
Let’s build something amazing together!
$56/hr
100%
Job Success
$20K+ earned
Available now
Offers consultations
Start of list.
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Anders T N.
has worked
.
🟠 𝐓𝐨𝐩𝐑𝐚𝐭𝐞𝐝 🟠 𝟓 ⭐️ 𝐑𝐞𝐯𝐢𝐞𝐰𝐬 🟠 𝟏𝟎𝟎+ 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 🟠 𝐅𝐨𝐫 𝟏7+ 𝐘𝐞𝐚𝐫𝐬, 𝐈 𝐇𝐚𝐯𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐝 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 𝐓𝐡𝐚𝐭 𝐃𝐫𝐢𝐯𝐞 𝐑𝐞𝐚𝐥 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐑𝐞𝐬𝐮𝐥𝐭𝐬 👉 𝐂𝐡𝐞𝐜𝐤 My 𝐏𝐨𝐫𝐭𝐟𝐨𝐥𝐢𝐨, you won't be disappointed ;)
🟢 𝐇𝐞𝐫𝐞’𝐬 𝐭𝐡𝐞 𝐝𝐞𝐚𝐥: If you’re looking for just another full stack developer, I’m not your guy.
But if you want a senior full stack developer with 17+ years of experience who understands business goals, AI integration, scalability, & long-term ROI, then you’re in the right place
📈 𝐌𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐒𝐞𝐞 𝐑𝐞𝐚𝐥 Business 𝐈𝐦𝐩𝐚𝐜𝐭
→ 𝐀𝐥𝐞𝐚 𝐂𝐨𝐧𝐬𝐮𝐥𝐭 𝐆𝐦bH “20% increased efficiency & €900,000 expanded client capacity”
→ 𝐊𝐥𝐮𝐛𝐚𝐫𝐨: “Quick wins & long-term improvements, delivered fast”
→ 𝐀𝐜𝐜𝐒𝐞𝐥𝐥𝐞𝐫𝐚𝐭𝐞 𝐒𝐧𝐝 𝐁𝐡𝐝: “Clear milestones, strong architecture, & reliable delivery”
💭 𝐃𝐨𝐞𝐬 𝐓𝐡𝐢𝐬 𝐒𝐨𝐮𝐧𝐝 𝐋𝐢𝐤𝐞 𝐘𝐨𝐮?
🔹“I need a full stack developer who understands business”
🔹“I need someone who knows how to do AI integration in my business”
🔹“I want a React developer who can scale my product”
🔹“I need a WordPress developer who won’t limit growth”
🔹“I need a mobile app developer who thinks end-to-end”
🔹“I need a Node.js or Python developer who builds for the long term”
🤝 𝐖𝐡𝐚𝐭 𝐘𝐨𝐮 𝐆𝐞𝐭 𝐖𝐡𝐞𝐧 𝐘𝐨𝐮 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞
✅ Clear, proactive communication
✅ Ownership mindset
✅ Scalable architecture decisions & AI integration
✅ Clean, maintainable code
✅ Business-driven technical choices
✅ Agile & Scrum delivery
𝐖𝐡𝐲 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞 𝐚𝐬 𝐘𝐨𝐮𝐫 Full Stack Developer
🔸 Full stack developer with business focus:
As a senior full stack developer, I design & deliver full stack development across frontend, backend, infrastructure, & AI API integrations. Clients choose me because I don’t just develop features; I develop systems that generate revenue, reduce operational cost and know how to build AI integration
🔸 React developer, Full stack developer & Web developer all in one
I’ve spent 8+ years building high-performance interfaces as a React developer, delivering modern web platforms as a full stack developer using React , Vue , & Angular when the business case demands it.
🔸 WordPress developer ( full stack developer )
Unlike typical WordPress developer 's, I architect secure, scalable WordPress solutions that integrate with API s, CRMs, & custom backends. My experience as a WordPress developer allows businesses to grow without hitting technical ceilings
🔸 Mobile app developer with a full stack developer & AI integration mindset
As a mobile app developer, I build mobile applications that integrate seamlessly with backend systems, ensuring performance, security, & long-term maintainability, not isolated apps that break at scale
🔸 React Developer 𝐖𝐡𝐨 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐬 𝐑𝐞𝐬𝐮𝐥𝐭𝐬 and Ai Machine Learning
I’m a React developer who has built complex dashboards, SaaS platforms, & high-traffic web applications used by thousands of users daily. My experience as a React developer ensures fast load times, clean architecture.
I’ve delivered production-grade solutions using React alongside WordPress backend s, Vue-based micro-frontends, & Angular enterprise modules, always choosing the framework that best fits the business model
Clients prefer me as their React developer because I think in systems, not components.
⚙️ Node.js Backend Expert
As a backend-focused full stack developer, I deliver as a full stack development only event-driven architectures for production systems.
My Node.js experience includes:
→ High-performance API s
→ Real-time systems
→ Secure authentication flows
→ SaaS platforms integrated with React, Vue, & PHP based systems & AI integration
Clients choose me for Node.js development because I design backend s that don’t need to be rewritten when your user base grows.
🧠 Python Developer 𝐟𝐨𝐫 𝐒𝐜𝐚𝐥𝐞 & 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐜𝐞
I’m a Python developer with deep experience building data-driven platforms, AI automation systems, & scalable API s. As a Python developer, I’ve worked across industries where performance, reliability, & security are mission-critical.
My Python work often integrates with React frontends & JavaScript ecosystems, & I’ve delivered solutions involving Java based systems & machine learning pipelines when data intelligence is required.
Clients trust me as a Python developer because I write production code that scales.
⚡ 𝐖𝐡𝐚𝐭 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐒𝐚𝐲
🦸 “As a full stack developer, Anders delivers exceptional quality.” - Soundus Mohamed, Graphic designer at Value Tree. ⭐⭐⭐⭐⭐
📣 “Enterprise-level development & communication.” Namit Jindal, CEO of Deliverability Ninja. ⭐⭐⭐⭐⭐
⏱️ “Fast, precise, & reliable.” Justin Weiland, senior finance consultant at Alea Consult GmbH ⭐⭐⭐⭐⭐
Got a full stack development project or AI machine learning ideas? Get in touch & let’s build something that actually moves your business forward. 🤝
Associated with
Smicolon
$30K+
earned
$17.9/hr
100%
Job Success
$1K+ earned
Available now
Start of list.
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Mubashar M.
has worked
.
I build scalable, production ready full stack applications with clean architecture, strong performance, and long erm maintainability.
I help startups, SaaS companies, and growing businesses turn ideas into high performance web applications fast, structured, and stress-free.
💻 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 (𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 + 𝗕𝗮𝗰𝗸𝗲𝗻𝗱)
🔹 Frontend Development – React.js Specialist
I build modern, scalable, and SEO friendly user interfaces using:
React.js
Next.js
JavaScript (ES6+)
TypeScript
Redux / Zustand
Tailwind CSS / Material UI
REST & GraphQL integrations
𝗜 𝗱𝗲𝘃𝗲𝗹𝗼𝗽:
SaaS dashboards
Admin panels
Enterprise web apps
Progressive Web Apps (PWA)
SEO-optimized Next.js web apps
Focus:
✔ Clean component architecture
✔ Performance optimization
✔ Scalable state management
✔ Pixel-perfect responsive UI
🔹 Backend Development – Node.js & Python Engineer
I design secure, scalable backend systems and APIs using:
Node.js Ecosystem
Node.js
Express.js
Fastify
NestJS
REST API Development
GraphQL APIs
Prisma ORM
Python Backend
FastAPI
Django
Flask
Async services & background jobs
Databases
PostgreSQL
MongoDB
MySQL
Redis
Backend strengths:
✔ Microservices architecture
✔ Secure authentication (JWT, OAuth)
✔ Stripe & third party integrations
✔ Scalable database design
✔ API performance optimization
✔ Production grade system architecture
🔹 Full Stack & MERN Development
Specialized in:
MERN Stack (MongoDB, Express.js, React.js, Node.js)
SaaS platforms
Fintech dashboards
CRM systems
ERP solutions
AI powered web applications
Subscription based systems
From idea → architecture → development → scaling
I take full ownership.
🎯 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲
✔ Business-first development mindset
✔ Clean, maintainable code
✔ Clear communication
✔ Reliable timelines
✔ Scalable architecture from day one
I do not just build features , I engineer scalable digital products.
📩 Let’s Build
If you are looking for a Senior Full Stack Developer (React.js + Node.js + Python) who can deliver secure, scalable, and production ready applications, let’s connect.
No fluff. Just strong engineering.
Full Stack Developer, React.js Developer, Node.js Developer, Python Backend Developer, MERN Stack Developer, Next.js Developer, API Developer, Microservices Developer, SaaS Developer, Backend Engineer, Web Application Developer.
$18/hr
100%
Job Success
$400K+ earned
Available now
Offers consultations
Start of list.
End of list.
Pradeep K.
has worked
.
I build and ship full-stack web apps and AI-powered products that are clean, fast, and built to scale, using React, Node.js, Next.js, Laravel, PHP, and Python. 14+ years in, 120+ jobs delivered, and $400K+ earned on Upwork.
Most projects I take over have the same problem: they were built to launch, not to last. I fix that. Whether it's a SaaS platform, an internal dashboard, an API-heavy backend, or an AI feature inside your product, I focus on maintainable code and architecture that holds up as you grow.
What I do:
- Full-stack web apps with React / Next.js and Node.js / Express
- Python backends and APIs (FastAPI, Django)
- SaaS platforms: auth, roles, billing, dashboards
- AI integrations: OpenAI, RAG, chatbots and assistants
- PostgreSQL, MySQL, database management , MongoDB, AWS, clean REST APIs
I've led delivery on complex platforms as the senior go-to engineer, I communicate clearly, and I think like a product owner, not just a coder. Happy to own a project end to end or slot into your team.
Tell me what you're building and I'll tell you exactly how I'd approach it.
Associated with
SoftRadix Technologies Pvt. Ltd - AI, SaaS & Product Engineering
$1M+
earned
$14.7/hr
100%
Job Success
$40K+ earned
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Hardeep S.
has worked
.
🚀 𝗡𝗲𝗲𝗱 𝗮 𝘀𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗯𝗮𝗰𝗸𝗲𝗻𝗱, 𝗔𝗜-𝗽𝗼𝘄𝗲𝗿𝗲𝗱 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻, 𝗼𝗿 𝗦𝗮𝗮𝗦 𝗠𝗩𝗣 𝗯𝘂𝗶𝗹𝘁 𝗾𝘂𝗶𝗰𝗸𝗹𝘆 𝗮𝗻𝗱 𝗰𝗼𝗿𝗿𝗲𝗰𝘁𝗹𝘆?
I help startups and businesses build 𝗠𝗩𝗣𝘀, 𝘀𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗔𝗣𝗜𝘀, 𝗔𝗜-𝗽𝗼𝘄𝗲𝗿𝗲𝗱 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀, 𝗮𝗻𝗱 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻-𝗿𝗲𝗮𝗱𝘆 𝗦𝗮𝗮𝗦 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀 using Python, FastAPI, Django, and modern cloud technologies.
Whether you're validating a new idea, launching a new product, or scaling an existing platform, I deliver reliable backend systems designed for performance, maintainability, and long-term growth.
From MVP to enterprise-grade solutions, I focus on building clean, scalable architectures that help businesses launch faster and grow confidently.
🏆 Top Rated Plus Freelancer
🏆 100% Job Success Score
🏆 2,367+ Hours Successfully Delivered
🏆 Long-Term Partnerships with Startups & Businesses Worldwide
👉 𝗦𝗲𝗻𝗱 𝗺𝗲 𝗮 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 and let's discuss the right technical approach for your project.
📊 𝐖𝐇𝐀𝐓 𝐈'𝐕𝐄 𝐃𝐄𝐋𝐈𝐕𝐄𝐑𝐄𝐃 (𝐒𝐨𝐜𝐢𝐚𝐥 𝐏𝐫𝐨𝐨𝐟 + 𝐒𝐩𝐞𝐜𝐢𝐟𝐢𝐜𝐢𝐭𝐲)
🏦 Financial Data Warehouse → Aggregated 30,000+ time-series into live dashboards for US fintech (reducing query time 65%)
🏘️ Real Estate Platform → Scraped, indexed, and tracked 100M+ property objects at scale (zero downtime, 99.9% uptime)
🔒 Web Application Firewall → Built scalable WAF for Chicago-based company (slashed infrastructure costs 40%)
🏨 Multi-Tenant SaaS Platform → Designed and delivered a scalable property management platform supporting multiple organizations and role-based access control
💡 𝐇𝐎𝐖 𝐈 𝐖𝐎𝐑𝐊 (𝐏𝐫𝐨𝐜𝐞𝐬𝐬 + 𝐂𝐥𝐚𝐫𝐢𝐭𝐲)
1. Discovery: Understand your business goals, requirements, and success metrics (free 30-min consultation)
2. Technical Design: Define the architecture, tech stack, timeline and roadmap aligned to your budget
3. Iterative Delivery: Bi-weekly sprints, clear progress, responsive communication
4. Production Ready: Testing, monitoring, documentation, deployment, and support.
5. Long-Term Partnership: Available for support, maintenance, scaling, or next phases
𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐚𝐛𝐥𝐞𝐬 𝐀𝐥𝐰𝐚𝐲𝐬 𝐈𝐧𝐜𝐥𝐮𝐝𝐞:
✅ Clean, maintainable, production-ready code
✅ API documentation & deployment guides
✅ CI/CD pipelines (GitLab/GitHub Actions)
✅ Database design & migration strategy
✅ Performance monitoring and optimization
𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞
𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Python · FastAPI · Django · Flask · Sanic
𝗔𝗣𝗜𝘀 & 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀: RESTful APIs · Google APIs · Payment Gateways (Stripe, PayPal)
𝗪𝗲𝗯 𝗦𝗰𝗿𝗮𝗽𝗶𝗻𝗴 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻: Scrapy · Playwright · Selenium · BeautifulSoup
𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: PostgreSQL · MySQL · MongoDB · Redis · SQLite
𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝘃𝗢𝗽𝘀: Docker (4+ yrs) · AWS (EC2, S3, Lambda) · GCP · Heroku · Kubernetes · Vercel · CI/CD (GitLab CI) · GitHub · Bitbucket
𝗔𝗜 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: OpenAI • RAG Systems • Vector Databases • AI Agents • Claude Code • Cursor
𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐞𝐝 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞:
✅ API ,API Integrations, Webhooks, integrating 3rd party API
✅ AI, RAG , OpenAI and Vector Databases
✅ Python FastAPI, Flask
✅ Django, Django Rest Framework, DRF, Django-channels
✅ MySQL, PostgreSQL, NoSQL, MongoDB, Graph Database
✅ Claude Code, Cursor Agentic way of building features & testing
✅ Scalable Deployment and Management
✅ Postman, Docker, API Management
✅ Testing
✅ Rapid MVP development to validate and launch faster
✅ Legacy system modernization to modern Python stacks
✅ Data-heavy applications with strong, scalable backends
⭐ 𝗪𝗵𝗮𝘁 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗦𝗮𝘆
"Hardeep is extremely professional, efficient and quick. He has been a pleasure to work with and we look forward to working with him again in the near future. Highly recommended."
🚀 𝐑𝐞𝐚𝐝𝐲 𝐭𝐨 𝐋𝐚𝐮𝐧𝐜𝐡 𝐨𝐫 𝐒𝐜𝐚𝐥𝐞 𝐘𝐨𝐮𝐫 𝐏𝐫𝐨𝐝𝐮𝐜𝐭?
Whether you need a FastAPI backend, AI-powered application, SaaS platform, API integration, or startup MVP, I can help turn your requirements into a production-ready solution.
💬 Send me a message with your project requirements, and I'll provide feedback on scope, timeline, and the best technical approach.
𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬 𝐭𝐨 𝐅𝐢𝐧𝐝 𝐦𝐞:
Python Backend Developer • FastAPI Developer • Django Developer • REST API Development • API Integrations • SaaS Development • Backend Engineering • Microservices Architecture • OpenAI Integration • RAG Applications • AI Agents • Web Scraping • Data Engineering • AWS • Docker • Kubernetes • PostgreSQL • MongoDB • Scalable Backend Systems • High-Performance APIs • Multi-Tenant SaaS Platforms
Associated with
Tekki Web Solutions Private Limited 🥇
$2M+
earned
$36/hr
100%
Job Success
$40K+ earned
Available now
Offers consultations
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End of list.
✊Knock, knock 👋 Who’s there? Someone who can turn “I have an idea” into a working product. 🧑🏻💻 I'm a Full Stack Web Developer (React + Node.js), 9+ years, 89 projects delivered SaaS platforms, 🛍️ marketplaces, 💶 fintech, 🩺 healthcare and AI products, including builds serving 6M+ users.👥
As a Full Stack Web Developer, build the whole product: database and API on the backend, the interface clients actually use on the frontend, and AI features inside both.
Backend Development — MVP to 600,000+ users on a rewards platform I built
- Node.js, NestJS, Express, TypeScript
- REST & GraphQL APIs, auth, role-based permissions (RBAC), row-level security
- PostgreSQL, MongoDB, Redis — schema design, indexing, query optimization
- Background jobs, queues, cron pipelines, webhook processing
- Real-time features with WebSockets
- AWS, Docker, CI/CD, monitoring
Full Stack Web Developer: Front-End Development — real-estate marketplace shipped in 6 months, client raised €2.2M
- Full Stack Web Development
- React, Next.js, TypeScript
- SSR/SSG, Core Web Vitals, SEO-critical page performance
- Data-heavy dashboards & admin panels (multi-tenant SaaS with 10,000+ active users)
- Design systems, reusable component libraries
- State management at scale: Redux, Zustand, React Query
- Search, filters, maps, complex forms
API Development & Integrations — Stripe billing, maps, messaging, CRMs
- Payment flows: subscriptions, usage-based billing, refunds, webhooks
- Third-party API integrations and anti-corruption layers
- Multi-tenant architecture with per-tenant data isolation
AI Development — healthcare AI MVP that raised $2M
- RAG chatbots and AI assistants: 70% of support tickets handled automatically, reply time cut from 4 hours to under 1 minute
- AI chatbot handling 300+ chats/day in production
- OpenAI / Anthropic integrations, LangChain & LangGraph agents
- Semantic search with vector databases (pgvector, Pinecone, Qdrant)
- 50+ automation workflows on n8n / Make
Mobile & Cross-Platform - Full Stack Web Developer— 6M+ users on a React Native product
- React Native apps shipped to App Store and Google Play
- Shared TypeScript logic between web and mobile
Stack
React · Next.js · TypeScript · Node.js · NestJS · PostgreSQL · MongoDB · Redis · GraphQL · Docker · AWS · Stripe · LangChain · OpenAI API
Track record
89 completed projects · $200K+ earned · 93% Job Success · Top Rated Plus
Why clients keep me on long-term as a Full Stack Web Developer:
- I think in product logic, not tickets
- I flag architectural mistakes before they get expensive
- I write code the next developer can read
- I stay with products as they scale
Building a SaaS platform, marketplace, AI product or internal tool? Tell me what you're building and I as a Full Stack Web Developer reply with a concrete technical direction.
Associated with
ProductCrafters