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$35/hr
100%
Job Success
$200K+ earned
Available now
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Are you looking for a developer who can turn your idea into a successful product instead of simply writing code?
I help startups and businesses build scalable web applications, AI-powered solutions, SaaS platforms, automation systems, and custom software products that solve real business problems.
With over 10 years of software development experience, $200K+ earned on Upwork, and a 100% Job Success Score, I have successfully delivered projects ranging from startup MVPs to enterprise-scale applications.
My Expertise
✅ AI Agents & OpenAI Integrations
✅ ChatGPT & LLM-Powered Applications
✅ Ruby on Rails Development
✅ Python Development
✅ SaaS Platforms
✅ API Development & Integrations
✅ Workflow Automation
✅ Product Architecture & Scaling
✅ CTO-Level Technical Consulting
What Makes Me Different?
I don't just develop software.
I help clients:
Define product requirements
Select the right technology stack
Reduce development costs
Improve scalability
Accelerate time to market
Avoid costly technical mistakes
I take ownership of projects and communicate clearly throughout the development process. Whether you need a complete product built from scratch, AI integration into an existing platform, or an experienced technical partner to lead development, I can help.
Industries I've Worked With
SaaS Products
Artificial Intelligence
Marketplaces
FinTech & Crypto
Real Estate
Healthcare
Logistics
Enterprise Solutions
My Promise
✔ Reliable Communication
✔ Clean, Maintainable Code
✔ On-Time Delivery
✔ Long-Term Support
✔ Business-Focused Solutions
If you're looking for a developer who understands both technology and business, let's discuss your project and build something exceptional together.
Send me a message and let's turn your idea into reality.
$20/hr
100%
Job Success
$40K+ earned
Available now
Start of list.
End of list.
Facing delays or roadblocks in building your full-stack SaaS platform or AI-powered web app? You're not alone, and I'm exactly who you need.
I'm Gull, a Certified Ruby on Rails Developer with 6+ years of experience building scalable, production-grade SaaS applications and AI-powered solutions. With $40K+ earned on Upwork, 13 completed projects, and a 100% Job Success Score, I consistently deliver results that my clients
come back for.
💻 𝗪𝗛𝗔𝗧 𝗜 𝗕𝗨𝗜𝗟𝗗:
• AI-Powered Web Applications (LLM, OpenAI, ChatGPT)
• Full-Stack SaaS Platforms (Ruby on Rails + React)
• RESTful & GraphQL APIs
• Real-time features using Hotwire & ActionCable
• Secure Authentication & Google OAuth Integration
• Cloud Deployment (AWS, Heroku, Render)
🛠 𝗠𝗬 𝗧𝗘𝗖𝗛 𝗦𝗧𝗔𝗖𝗞:
→ Backend: Ruby on Rails, Node.js, Python
→ Frontend: React.js, Hotwire, Turbo, Stimulus
→ Database: PostgreSQL, MySQL, Redis
→ AI: OpenAI API, LLM Integration, Prompt Engineering
→ DevOps: AWS, Docker, CI/CD, GitHub Actions
🏆 𝗪𝗛𝗔𝗧 𝗠𝗬 𝗖𝗟𝗜𝗘𝗡𝗧𝗦 𝗦𝗔𝗬:
"Gull is a highly skilled Ruby on Rails developer with a proven ability to implement complex, scalable
features with precision." — Recent Client
"He's a genius! My experience working with Gull has been fantastic." — Tap App Client
🎯 𝗜 𝗦𝗣𝗘𝗖𝗜𝗔𝗟𝗜𝗭𝗘 𝗜𝗡:
✅ Building SaaS products from idea to launch
✅ AI feature integration into existing apps
✅ Fixing complex bugs in legacy Rails apps
✅ Performance optimization & scaling
✅ Long-term development partnerships
I believe in clear communication, clean code, and delivering on time — every time. My clients don't just hire me once; they keep coming back because I treat their project like my own business.
Ready to build something great?
Send me a message and let's discuss your project!
Gull A.
has worked
.
$25/hr
100%
Job Success
$30K+ earned
Available now
Start of list.
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I’m a Full-Stack Developer with 10+ years of experience building high-performance, scalable web applications — specializing in Ruby on Rails and Shopify development. I’ve successfully delivered projects across eCommerce, SaaS, IoT, and real-time systems, helping businesses ship faster, scale reliably, and seamlessly integrate with third-party services.
Over the years, I’ve worked with companies like Danube.sa, Tractive, and SpaceOS, leading engineering efforts to build real-time tracking systems, multi-tenant SaaS platforms, and high-volume checkout engines. My approach combines strong technical expertise with a product-focused mindset — ensuring that the solutions I deliver are both robust and aligned with business goals.
Core Skills & Expertise
Backend Development: Ruby on Rails, Service Objects, Interactors, Grape API, GraphQL, RESTful JSON/XML APIs
Frontend Development: Hotwire, Stimulus.js, React, Vue.js, Angular, Slim, HAML, CoffeeScript, Bootstrap, SASS
Databases & Search: PostgreSQL, MySQL, MongoDB, Redis, Memcache, Elasticsearch, Solr
eCommerce Development: Shopify (custom apps, themes, checkout flows), Solidus/Spree, A/B Testing, Promotions
Payments Integration: Stripe, PayPal, Adyen, Braintree, FirstData, Subscription Billing
Real-Time Features: ActionCable, Hotwire, Turbo Streams, WebSockets, Pusher
Background Processing: Sidekiq, Redis, RabbitMQ, Mailers
Testing & Security: RSpec, Cucumber, MiniTest, FactoryBot, OWASP-based security practices
DevOps & Infrastructure: Docker, CI/CD (GitHub Actions, Jenkins), Heroku, Capistrano, Puma, Nginx, Apache
Integrations: Amazon S3, Mandrill, Mailchimp, Twilio, Google Maps, Highcharts, Web Scraping
SaaS Architecture: Multi-tenant platforms (Apartment gem), Rails Engines, Headless CMS, Microservices
Why clients hire me:
10+ years of hands-on development experience with proven success in Ruby on Rails and Shopify projects
Strong expertise in scaling systems, API development, and complex integrations
Focus on clean, maintainable code that reduces long-term technical debt
A track record of delivering projects that drive measurable business results
Whether you need to launch a new Shopify store, customize your eCommerce checkout flow, build a scalable SaaS platform, or integrate complex APIs, I can help you deliver a solution that’s both technically solid and business-driven.
Muhammad Hamid R.
has worked
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$20/hr
100%
Job Success
$20K+ earned
Start of list.
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I'm a results-driven full-stack developer with a proven track record crafting dynamic and client-focused web applications. My passion lies in solving challenges and turning ideas into reality. Here's what sets me apart:
⭐ Skills and Experience
✅ Solid understanding of front-end and back-end technologies, specializing in Ruby on Rails, React, and Javascript.
✅ Proven expertise in web application development, design, and coding, committed to industry-grade, high-quality solutions.
✅ Proactive problem solver and quick learner, always staying on top of current trends and eager to test new technologies.
✅ Exceptional communicator and team player with valuable experience collaborating within small firms.
Client-focused approach, ensuring a deep understanding of the client's needs and consistently delivering on schedule.
⭐ Here's what I can bring to your project ⭐
✅ Top-notch experience in Ruby on Rails and React with a deep understanding of both backend and frontend development
✅ Extensive experience working with scalable and maintainable web applications, ensuring high performance and responsiveness
✅ Proficiency with the Hotwire stack (Turbo, Stimulus) to create highly interactive and reactive applications
✅ Expert understanding of integrating RESTful APIs and GraphQL for seamless communication between frontend and backend
✅ Ability to quickly diagnose and resolve complex code issues, ensuring efficient and reliable applications
✅ Proficiency in designing and implementing secure authentication and authorization systems
✅ Comprehensive experience with CI/CD pipelines to ensure smooth and automated deployment processes
✅ Strong background in deploying and managing applications on AWS, ensuring scalability, reliability, and cost-effectiveness
✅ 24/7 ultra-reliable communication: you will always be aware of the project status
✅ Someone who cares about helping you succeed and bringing value to your business
⭐ Why you should choose me over other freelancers ⭐
✅ Client Reviews: I prioritize and focus on providing value to all of my clients and earning their trust.
✅ Over-delivering: this is core to my work as a freelancer. My focus is on giving more than what I expect to receive. I take pride in leaving all of my clients saying, "WOW."
✅ Responsiveness: being extremely responsive and keeping all lines of communication readily open with my clients.
✅ Resilience: reach out to any of my current or former clients and ask them about my resilience. For any issue that my clients face, I attack them and find a solution.
✅ Kindness: one of the main aspects of my life that I implement in every facet. Treating everyone with respect, understanding all situations with empathy, and genuinely wanting to improve my client's situations.
🏆 Reviews and feedback from high-profile clients 🏆
The client reviews below (also in my work history section) describe the quality of work and value that you can expect from working with me.
⭐⭐⭐⭐⭐ "Phenomenal freelancer with good technical skills, fluent English, and fantastic attitude. I can’t recommend Promise enough!" - Jack Silver Fuel
⭐⭐⭐⭐⭐ "Did a good job, followed instructions, adapted quickly and was always available and open to feedback." - Roger Kondrat
⭐⭐⭐⭐⭐ "Really solid senior developer. Develops fast but not so fast he forgets to write well tested code. Has very good modern Hotwire skills. Friendly and good under pressure. Improves and is responsive to feedback. We would definitely hire him back" - Roger Kondrat
⭐ I'm excited about the opportunity to bring my skills and enthusiasm to your projects. Let's work together to turn your vision into a reality!
Promise U.
has worked
.
$30/hr
100%
Job Success
$200K+ earned
Available now
Start of list.
End of list.
Are you building an AI-powered product and need someone who can take it from idea to
production; not just prototype it?
I specialize in Agentic AI systems and full-stack development, helping startups and
businesses build intelligent, autonomous applications that actually work at scale.
🤖 WHAT I BUILD
✦ AI Agents & Multi-Agent Systems (LangChain, LangGraph, CrewAI, AutoGen)
✦ RAG Pipelines — custom knowledge bases, vector search (Pinecone, Weaviate, pgvector)
✦ LLM Integration — OpenAI GPT-4o, Claude (Anthropic), Gemini, Mistral, Llama
✦ AI Workflow Automation — n8n, Zapier AI, custom orchestration layers
✦ Chatbots & Conversational AI with memory, tools, and function calling
✦ Voice AI Agents — ElevenLabs, Whisper, real-time speech pipelines
✦ Full-Stack Web Apps — React, Next.js, Node.js, TypeScript
✦ Ruby on Rails — REST APIs, SaaS platforms, background jobs, integrations
🧠 MY APPROACH
I don't just plug in an API and call it "AI." I architect systems end-to-end from
prompt engineering and agent memory design to deployment and monitoring. Whether you
need a single AI feature or a full autonomous agent pipeline, I'll build it clean,
fast, and production-ready.
💼 WHO I WORK WITH
✦ SaaS founders embedding AI into their product
✦ Enterprises automating internal workflows with AI agents
✦ Startups building AI-first MVPs from scratch
✦ Teams needing a senior developer who bridges AI + full-stack
⚙️ TECH STACK
AI/ML: LangChain · LangGraph · OpenAI · Anthropic Claude · LlamaIndex · CrewAI · AutoGen
Vector DBs: Pinecone · Weaviate · Qdrant · pgvector
Backend: Node.js · Ruby on Rails · Python · FastAPI · REST · GraphQL
Frontend: React · Next.js · TypeScript · Tailwind CSS
Cloud: AWS · Vercel · Railway · Supabase · Docker
Automation: n8n · Zapier · Make (Integromat)
10+ years of software development. Now 100% focused on AI.
Let's build something intelligent. 🚀
Ajaz K.
has worked
.
$20/hr
97%
Job Success
$100K+ earned
Available now
Start of list.
End of list.
I am a Senior Ruby on Rails Developer with about 4 years of experience.
What I can do:
- Build app from scratch
- Build API
- Refactor existing app
- Add more features
- Deployment into production
- Responsive design
Frameworks:
- Ruby on Rails (all versions)
- ReactJS
- AngularJS
- Bootstrap
- JQuery
Database
- PostgreSQL
- MySQL
- MongoDB
Testing
- TestUnit
- RSpec
Deployment
- Heroku
- Digital Ocean
- ElasticBeanstalk
Text editor
- VIM
- VSCode
Thank you for reading my long overview :)
Feel free to contact me if you want to discuss your jobs :)
Sharee M.
has worked
.
Associated with
OnGraph Technologies Private Limited
$10M+
earned
$19.67/hr
100%
Job Success
Available now
Offers consultations
Start of list.
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I help startups and growing businesses build scalable SaaS platforms, AI-powered applications, and custom web solutions that are fast to launch, easy to maintain, and built for long-term growth.
With 10+ years of full-stack development experience, I've partnered with founders and product teams to turn ideas into production-ready products using Ruby on Rails, Next.js, React, PostgreSQL, and modern cloud infrastructure. From MVPs to enterprise applications, I focus on clean architecture, performance, and delivering reliable software that scales.
➡️ Core Expertise & Technologies:
✓ Ruby on Rails Development
✓ Next.js & React Development
✓ SaaS Product Development
✓ MVP Development for Startups
✓ REST API & GraphQL Development
✓ AI Integrations (OpenAI & Anthropic)
✓ Stripe & Third-Party API Integrations
✓ PostgreSQL, Redis & Sidekiq
✓ AWS, Docker & CI/CD
✓ Performance Optimization & Scalability
➡️ Recent Project Experience:
• AI-Powered Matching Platform
• Healthcare E-commerce Platform
• Climate Sustainability Platform
• FinTech & Digital Payments Platform
• SaaS Products & Business Applications
• Enterprise Dashboards & Admin Portals
• Marketplace & Subscription Platforms
• API Development & Third-Party Integrations
➡️ Industries I Serve:
• SaaS & Technology
• E-commerce & Marketplaces
• Healthcare & MedTech
• EdTech & E-Learning
• PropTech & Real Estate
• Beauty, Wellness & Lifestyle
➡️ Why Clients Work With Me?
✔ Clean, maintainable, and scalable code
✔ Strong communication and proactive collaboration
✔ Production-ready architecture
✔ Fast turnaround without compromising quality
✔ Long-term technical partnership mindset
Whether you need a Ruby on Rails developer, AI integration specialist, or full-stack engineer to build and scale your next product, I can help transform your ideas into reliable, production-ready solutions.
💬 Send me a message or invite me to your project—I'd be happy to discuss how I can help.
Associated with
Sobonix Solutions Private Limited
$80/hr
100%
Job Success
$80K+ earned
Available now
Offers consultations
Start of list.
End of list.
I am a seasoned developer with over 20 years of experience, specializing in full-stack development across diverse technology stacks. My journey began in 2002, and since then, I have honed my skills in web and mobile application development, game and brand creation, as well as artificial intelligence.
Technical Proficiencies:
- Front-End Technologies: HTML, CSS, JavaScript, React, Angular
- Back-End Technologies: PHP/Laravel, Ruby on Rails, C#/.NET, Node.js, Python, Django
- Databases: PostgreSQL, MySQL, MongoDB, Redis
- AI & Machine Learning: TensorFlow, Keras, PyTorch, Scikit-learn
- Cloud Services: AWS, Azure, Google Cloud Platform
- Infrastructure as Code: Terraform, Ansible
- Monitoring & Visualization: Grafana, Prometheus, ELK Stack- DevOps Tools: Docker, Kubernetes, Jenkins, Git
- VR & AR Technologies: Unity, Unreal Engine, ARKit, ARCore
I have a strong foundation in Ruby on Rails and .NET, enabling me to build robust and scalable applications. My proficiency in Python allows me to leverage AI technologies effectively, creating innovative solutions that enhance user experiences.
Additionally, I have explored the realms of virtual and augmented reality, integrating immersive technologies into applications that captivate users. My passion for technology drives me to stay updated with industry trends, ensuring I deliver cutting-edge solutions that meet client needs.
With a commitment to quality and collaboration, I thrive in dynamic environments where I can contribute to impactful projects and continue to grow as a developer.
Chuck G.
has worked
.
Associated with
ShrineTech LLC
$5K+
earned
$30/hr
100%
Job Success
$300K+ earned
Start of list.
End of list.
I'm a well experience Full Stack developer having 12+ years of experience in Web & API Development.
Working on projects I always care about code quality and general solution usability.
It's important for me to build long term relationships with clients, so I'm primarily looking for long term projects. I'm flexible with my working hours and would be happy to work closely with your team.
I'm comfortable with speaking, reading and writing English.
My Skills are:
- Ruby on Rails
- React JS
- Angular JS, 2, 4, 5, 6
- Front end (JavaScript, jQuery, Ajax, Sass, Haml , Twitter bootstrap, etc)
- Database used : Postgres, MySQL
- have done deployments on server : AWS, ec2, Digital Ocean, Heroku
Looking forward to hearing from you.
Anupam G.
has worked
.
$20/hr
100%
Job Success
Offers consultations
Start of list.
End of list.
🚀 14+ Years in IT | Full Stack Developer | Available 14 Hours/Day | 300+ Happy Clients
🛍️ Shopify Expert | Custom Themes & Apps | Shopify Plus | Liquid & Headless
🤖 AI-Powered Ruby on Rails | SaaS & Full Stack Development
Before stepping into freelancing, I spent years building software at top-tier companies — and those 14+ years have translated into 1,500+ live projects delivered across 300+ businesses worldwide.
My work goes beyond writing clean code. I build solutions that 𝗰𝗼𝗻𝘃𝗲𝗿𝘁 𝘃𝗶𝘀𝗶𝘁𝗼𝗿𝘀 𝗶𝗻𝘁𝗼 𝗰𝘂𝘀𝘁𝗼𝗺𝗲𝗿𝘀 — because real success is measured in business outcomes, not just shipped features. I stay with every project through launch, maintenance, and long-term support.
Hi, I'm Dinesh — a Full Stack Developer with 14+ years of experience helping businesses build and scale digital products that drive real results: better customer experiences, higher conversions, and sustainable growth.
──────────────────────────────────────────
🛍️ Shopify Development & Customization
From pixel-perfect storefronts to complex backend automations — I build Shopify solutions that perform, convert, and scale.
✅ Custom Theme Development (Liquid) & Figma to Shopify
✅ Private & Public Shopify App Development
✅ Shopify Admin Extensions & Checkout Customization
✅ Shopify Plus — B2B, Merchant Dashboards & Checkout Extensibility
✅ Subscription, Membership & Configurable Products
✅ Shopify API, Webhooks, ERP & CRM Integrations
✅ Headless Shopify (Hydrogen / Storefront API)
✅ Inventory & Order Automation
──────────────────────────────────────────
💎 Ruby on Rails — Full Stack Web Development
From MVPs to enterprise-grade platforms — fast, scalable, and maintainable Rails applications.
✅ Custom Rails App Development (Rails 6 / 7 / 8)
✅ Multi-Tenant SaaS Architecture & MVP Development
✅ RESTful API & GraphQL API Development
✅ Real-Time Features (Action Cable & WebSockets)
✅ Authentication & Authorization (Devise, OAuth2, JWT, Pundit)
✅ Payment Integration (Stripe, PayPal, Braintree, Chargebee)
✅ Background Jobs (Sidekiq), Caching & Performance Tuning
✅ AWS, Heroku & Docker Deployment — CI/CD Ready
──────────────────────────────────────────
⚛️ React JS — Modern Frontend Development
Fast, responsive interfaces — from single-page apps to complex enterprise dashboards.
✅ Custom React Application Development (React 18+)
✅ Figma / Adobe XD to React — pixel-perfect implementation
✅ State Management (Redux Toolkit, Zustand, Context API)
✅ NextJS — SSR, SSG & ISR for SEO-Ready Apps
✅ Real-Time UI with WebSockets & Socket IO
✅ Auth Integration (Auth0, Firebase, NextAuth, JWT)
✅ Performance Optimization & Core Web Vitals
✅ CI/CD via GitHub Actions, Vercel & Netlify
──────────────────────────────────────────
🌐 WordPress — Custom Development & WooCommerce
Fast, secure, fully custom WordPress solutions easy for your team to manage.
✅ Custom Theme & Plugin Development (from scratch)
✅ Figma / Adobe XD to WordPress — pixel-perfect conversion
✅ Elementor, Divi, WPBakery & Gutenberg Customization
✅ WooCommerce — Custom Products, Checkout & Payment Gateways
✅ Membership, Subscription & Booking Systems
✅ Speed, SEO & Security Optimization (Yoast, RankMath)
✅ Headless WordPress (WP + React / NextJS)
✅ CRM, ERP & Third-Party API Integration
──────────────────────────────────────────
💡 Why Clients Keep Coming Back
✔ Business-first thinking — outcomes over output
✔ Clean, maintainable & scalable code
✔ Clear communication & honest estimates
✔ On-time delivery — no surprises
✔ Long-term support & maintenance
✔ 14+ years of battle-tested experience
I don't just deliver code. I deliver outcomes.
📩 Send me a message — I'm available 14 hours a day and happy to jump on a call to discuss your project.
— Dinesh