You will get a functional Google Chrome (Firefox, Safari) Extension
Top Rated
Top Rated
Project details
You will get a functional Chrome extension. It can also be modified to work on Firefox, Safari, Edge.
We can also help you get the extension approved on the Chrome store if needed.
We can also help you get the extension approved on the Chrome store if needed.
Programming Languages
HTML & CSS, JavaScript, PythonCoding Expertise
Cross Browser & Device Compatibility, Security, DesignWhat's included $2,500
These options are included with the project scope.
$2,500
- Delivery Time 10 days
- Number of Revisions 4
- Number of Pages 4
- Design Customization
- Content Upload
- Responsive Design
- Source Code
Optional add-ons
You can add these on the next page.
Additional browser support
(+ 4 Days)
+$800
96 reviews
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MC
Morgane C.
May 18, 2026
Développement MVP web – Marketplace de réservation (maps + Stripe)
Good collaboration over several months. The team is responsive, professional, and technically solid. Looking forward to continuing the project together.
CW
Christopher W.
Dec 29, 2025
Full Stack Web Dev (legal tech platform project)
Karapet's team did a great job building our complicated legal tech MVP. We worked directly with a skilled software developer with a great work ethic who delivered on time in a continuous basis. Our MVP was a complicated and some iteration on building, but once aligned it was successfully built. Happy to work with Karapet and his team again, and recommend them.
RM
Roman M.
Dec 18, 2025
Web Application for Client Data Management and Analysis
Very responsive, clear communication, deadlines are respected, the price to quality ratio is good
AI
Andrew I.
Nov 24, 2025
RFP: SaaS Web App Audit & Developer (Supabase / React / Stripe)
GW
Garrett W.
Sep 10, 2025
Python Developer – Custom API Integration (QuickBooks Online + Tripleseat)
Karapet Petrosyan and his team did an excellent job on our project. They are highly skilled software developers who delivered high-quality code on time and with great attention to detail. Communication was smooth and transparent throughout, and they were proactive in offering solutions and improvements that strengthened the final product. Their professionalism, reliability, and teamwork made the entire process efficient and stress-free. I would gladly work with Karapet and his team again and highly recommend them to anyone seeking a talented and dependable development team.
About Karapet
Python React Full Stack Developer | Web App Developer | SaaS Developer
100%
Job Success
Yerevan, Armenia - 12:34 pm local time
Python React Full Stack Developer
15+ Years Experience • 34,700+ 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 → 34,700+ 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.
Steps for completing your project
After purchasing the project, send requirements so Karapet can start the project.
Delivery time starts when Karapet receives requirements from you.
Karapet works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements
Discussing the requirements
Understanding the feasability + scope of the work
Converting your requirements into functional requirements.