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Fiverr Pro
English
$
USD
I will build ruby on rails backend API, fix bugs and develop react apps
Qasim Ali Zahid
Level 2
4.9
4.9
About this gig
I am a Ruby on Rails backend developer with 7+ years of experience building scalable APIs, SaaS platforms, and modern web applications.
I specialize in Ruby on Rails backend development, REST API development, bug fixing, and third-party integrations. I also build full stack applications using Ruby on Rails + React.js for fast and responsive user experiences.
What I can do:
- Build Ruby on Rails APIs (REST/JSON)
- Fix bugs, errors & performance issues
- Develop SaaS platforms & MVPs
- Build full stack apps (Rails + React.js)
- Integrate payments (Stripe, PayPal)
- API integrations (Google Maps, Twilio, SendGrid)
- Real-time features (ActionCable, Hotwire)
- Deploy on AWS, DigitalOcean, Heroku
I focus on clean, scalable code and delivering reliable solutions aligned with your business goals.
Message me before placing an order to discuss your project.
Get to know Qasim Ali Zahid
Qasim Ali Zahid
Ruby On Rails Dev ! Payment Gateway Integrations ! Pro Bug Hunter
Level 2
- FromPakistan
- Member sinceNov 2020
- Avg. response time2 hours
- Last delivery3 weeks
Languages
Urdu, English, Hindi, German, French
I have 5+ years of development experience with Ruby on Rails and React js. I have been working in the software industry on health-related websites along with hr management, Limos-pay, and payroll portals. Most of the stuff related to the Ruby/Rails development is familiar to me. Currently, I am working on a product related to machine learning which is not only getting appreciation locally but in the international market as well. I have a good command of deployment tools and administrating servers. I'm also well-versed in JavaScript/CoffeeScript, AngularJS, and Node js.
My Portfolio
FAQ
What services do you offer in Ruby on Rails?
I offer Ruby on Rails backend development, including API development, bug fixing, performance optimization, third-party integrations, and full web application development using Rails + React.
Can you build a complete web application (frontend + backend)?
Yes, I can build full stack applications using Ruby on Rails + React.js. I handle both backend APIs and modern, responsive frontend interfaces.
Do you fix existing Ruby on Rails bugs or errors?
Absolutely. I can debug, fix errors, improve performance, and refactor your existing Rails application to make it more stable and scalable.
Can you integrate payment gateways?
Yes, I can integrate payment systems like Stripe and PayPal, including subscriptions, one-time payments, and webhooks.
Do you work with third-party APIs?
Yes, I have experience integrating APIs such as Google Maps, Twilio, SendGrid, Slack, and other custom APIs.
Can you help build an MVP for my startup?
Yes, I can help you design and develop a Minimum Viable Product (MVP) using Ruby on Rails to quickly launch and validate your idea.
Do you provide deployment services?
Yes, I can deploy your application on AWS, DigitalOcean, or Heroku and ensure it runs smoothly in production.
How do you handle project requirements?
I recommend discussing requirements before placing an order. This helps define scope, timeline, and ensures the best results.
Do you offer ongoing support and maintenance?
Yes, I can provide ongoing support, feature updates, and maintenance after project delivery.
Reviews
17 reviews for this Gig
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| (1) | ||
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
M 
mehdibarani
Repeat Client
United Kingdom
Incredible work as always! There is nothing this man can't do - fixed all our bugs and created new innovative features for our app. I'll be back!
$50-$100
Price
1 day
Duration
Helpful?O oliviajayneltd
Repeat Client
United Kingdom
This is my second project with Qasim and he went above and beyond to make sure it was delivered ahead of schedule. I fed back a couple of minor changes and these were fxed quickly and professionally, and exceeded expectations. Qasim tries really hard to give you value for money (eg the home page needed...
$200-$400
Price
7 days
Duration
Q 
Seller's Response
Helpful?O oliviajayneltd
Repeat Client
United Kingdom
Qasim is an EXCELLENT freelancer. I had a PERN stack built by a developer on a different freelance platform, which unfortunately ran late and over budget and wasn't quite finished. So coming to Fiverr I was really nervous, but I'm so grateful I found Qasim. He answered my brief in detail, delivered...
$200-$400
Price
7 days
Duration
Q Seller's Response
Helpful?R 
robskarin
United Kingdom
Very responsive and helpful!
Up to $50
Price
3 days
Duration
Helpful?I imidsac
Repeat Client
Mali
Merci encore !!!
$200-$400
Price
2 weeks
Duration
Helpful?
Reviews
17 reviews for this Gig
| (16) | ||
| (1) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
M mehdibarani
Repeat Client
United Kingdom
Incredible work as always! There is nothing this man can't do - fixed all our bugs and created new innovative features for our app. I'll be back!
$50-$100
Price
1 day
Duration
Helpful?O oliviajayneltd
Repeat Client
United Kingdom
This is my second project with Qasim and he went above and beyond to make sure it was delivered ahead of schedule. I fed back a couple of minor changes and these were fxed quickly and professionally, and exceeded expectations. Qasim tries really hard to give you value for money (eg the home page needed...
$200-$400
Price
7 days
Duration
Q Seller's Response
Helpful?O oliviajayneltd
Repeat Client
United Kingdom
Qasim is an EXCELLENT freelancer. I had a PERN stack built by a developer on a different freelance platform, which unfortunately ran late and over budget and wasn't quite finished. So coming to Fiverr I was really nervous, but I'm so grateful I found Qasim. He answered my brief in detail, delivered...
$200-$400
Price
7 days
Duration
Q Seller's Response
Helpful?R robskarin
United Kingdom
Very responsive and helpful!
Up to $50
Price
3 days
Duration
Helpful?I imidsac
Repeat Client
Mali
Merci encore !!!
$200-$400
Price
2 weeks
Duration
Helpful?
