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$
USD
I will fix bugs and build features in your ruby on rails app
John
5.0
5.0
About this gig
I help teams fix and extend existing Ruby on Rails apps without turning every issue into a rewrite.
I have 16 years of Rails experience across SaaS, marketplaces, healthcare, payments, booking systems, APIs, and internal tools. I can help with backend bugs, Rails APIs, PostgreSQL and ActiveRecord issues, admin flows, Sidekiq jobs, Hotwire or React-connected features, and integration cleanup.
My workflow is practical: understand the current behavior, reproduce the issue, inspect the relevant code path, make the smallest reliable change, and explain what changed.
Good fit:
- Rails bug fixes
- API work
- SaaS feature updates
- PostgreSQL and ActiveRecord issues
- Sidekiq or Redis jobs
- Admin and internal workflow fixes
- Integration cleanup
Not a good fit for one fixed order: vague MVPs, unclear requirements, or major rewrites without a discovery step.
Please message before ordering if the scope is unclear.
Get to know John
John
Senior Ruby on Rails developer for SaaS apps, APIs and AI features
- FromGreece
- Member sinceMay 2017
- Avg. response time5 hours
- Last delivery4 years
Languages
English, Greek
I am John, a senior Ruby on Rails engineer with 16 years of Rails experience and 20 years building software products.
I help SaaS and product teams fix production bugs, build focused features, integrate APIs, improve performance, and add practical AI search features.
My background includes marketplaces, payments, booking systems, healthcare, real estate platforms, PostgreSQL, Redis, Sidekiq, Stripe, React, React Native, AWS, and production Rails APIs.
I work best with existing Rails apps where clear debugging, careful implementation, and practical delivery matter.
My Portfolio
Other Software Development Services I Offer
FAQ
Should I message you before ordering?
Yes. Send the issue, repo context, screenshots or logs, and expected behavior. I will confirm the best package before you order.
Can you work on an existing Rails app?
Yes. This gig is designed for existing Rails apps. I can work with Rails APIs, PostgreSQL, Sidekiq, Redis, Hotwire, React-connected views, and integrations.
Is my code and business data safe?
Yes. I only use access needed for the task, keep client code confidential, and can work under an NDA if your company requires one.
What happens if the issue is larger than expected?
I will explain what I found before expanding scope. If the task is larger than the package, we can agree on the next step or keep the work limited to the original scope.
Do you offer longer Rails support?
Yes. If the first task goes well, we can discuss longer support for Rails maintenance, feature work, integrations, or performance cleanup.
Reviews
3 reviews for this Gig
| (3) | ||
| (0) | ||
| (0) | ||
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Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
Sort By
Most relevant
N norcalsurprise
Repeat Client
United States
knows his stuff, communicated well, did the job with no drama.
Helpful?R rinims
Indonesia
Thank you for the on-time delivery. The seller is a highly responsive developer who's very knowledgeable in Ruby on Rails!
Helpful?M 
manevski
United Kingdom
John is absolutely amazing. Work was delivered accurately and on time, everything was on point. You can’t go wrong choosing him
Helpful?
Reviews
3 reviews for this Gig
| (3) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
Sort By
Most relevant
N norcalsurprise
Repeat Client
United States
knows his stuff, communicated well, did the job with no drama.
Helpful?R rinims
Indonesia
Thank you for the on-time delivery. The seller is a highly responsive developer who's very knowledgeable in Ruby on Rails!
Helpful?M manevski
United Kingdom
John is absolutely amazing. Work was delivered accurately and on time, everything was on point. You can’t go wrong choosing him
Helpful?
