You will get Ruby on Rails app audit & health check
Project details
With over 20 years experience as a software engineer I have a vast collection of knowledge for most web apps.
Ruby, Ruby on Rails and Sinatra have been my core languages of choice when it comes to building in the last 12 years.
I am also heavily focused on startups and their need to build fast and scale.
Security these days is very important and since I spend a lot of time with businesses in the fintech industry, nothing is more important then app and data security.
Ruby, Ruby on Rails and Sinatra have been my core languages of choice when it comes to building in the last 12 years.
I am also heavily focused on startups and their need to build fast and scale.
Security these days is very important and since I spend a lot of time with businesses in the fintech industry, nothing is more important then app and data security.
Programming Languages
Ruby/Ruby on RailsCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$99
|
Standard
$199
|
Advanced
$399
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 7 days |
Number of Revisions | 0 | 0 | 0 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
26 reviews
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JM
Jo M.
Jan 6, 2026
Ruby on Rails Dev
Huge thanks to Mark for his professionalism, care, and attention to detail throughout our work together. He was thoughtful, reliable, and a pleasure to collaborate with. I really appreciated his approach and would happily recommend him.
DM
Deanne M.
Oct 14, 2024
Ongoing Development Work
We really appreciate the time, dedication and skill Mark brought to our project. He was able to quickly get up to speed on our requirements and didn't need any hand-holding. Mark has a great understanding of Ruby On Rails and he worked across several facets of our project with ease.
DW
Dan W.
Jan 30, 2024
Rails Developers, Provide feedback on a new AI-enabled extension for Visual Studio Code
Excellent work! One of UpWork's finest. Hope to work with again soon.
AW
Adam W.
Sep 20, 2023
Expert Drupal Developer with Ruby on Rails Expertise
Mark is an absolutely outstanding programmer, a true expert in his field. When we needed specialised work done on a Ruby on Rails form and an existing Drupal website, Mark was our go-to professional. His technical prowess was immediately evident, surpassing all expectations we had for the project.
Even when I was swamped with other responsibilities and faced time constraints, Mark's unflappable demeanour and proactive approach became invaluable. He didn't just follow up; he took the reins and drove the project to successful completion. His efficiency in tackling tasks was nothing short of remarkable—jumping on new challenges at a moment's notice and executing them flawlessly.
The end result? A project delivered to an exceptional standard, exceeding our initial requirements and expectations. Mark's commitment to quality was evident in every line of code, making the final product not just functional, but exemplary. If you're looking for someone who not only meets but consistently exceeds expectations, Mark is the professional you need. We couldn't be happier with the outcomes and can't recommend him highly enough.
Even when I was swamped with other responsibilities and faced time constraints, Mark's unflappable demeanour and proactive approach became invaluable. He didn't just follow up; he took the reins and drove the project to successful completion. His efficiency in tackling tasks was nothing short of remarkable—jumping on new challenges at a moment's notice and executing them flawlessly.
The end result? A project delivered to an exceptional standard, exceeding our initial requirements and expectations. Mark's commitment to quality was evident in every line of code, making the final product not just functional, but exemplary. If you're looking for someone who not only meets but consistently exceeds expectations, Mark is the professional you need. We couldn't be happier with the outcomes and can't recommend him highly enough.
AW
Adam W.
Sep 11, 2023
Ruby on Rails Development
About Mark
Senior Ruby on Rails Developer | AI, SAAS, API & Bug Fixes
100%
Job Success
Brisbane, Australia - 10:05 am local time
Senior Rails developer with 20+ years experience delivering production-ready SaaS and APIs.
Hi, I’m Mark. I'm a Senior Ruby on Rails developer with 20+ years in software engineering, focused on building, scaling, and fixing production-grade Rails applications.
I help startups and growing businesses ship faster, reduce bugs, and improve performance in Rails apps (especially Rails 6, 7, and 8).
🚀 What I Can Do For You
✔ Build & Launch
* Full SaaS applications using Ruby on Rails
* MVPs with clean architecture and scalability in mind
* RESTful & JSON APIs (including third-party integrations)
✔ Fix & Improve Existing Apps
* Debugging complex Rails issues (backend + frontend)
* Refactoring legacy Rails codebases
* Performance optimization (slow queries, N+1 issues, caching)
* Test coverage improvements (RSpec / Minitest)
✔ Modern Rails Stack
* Hotwire (Turbo + Stimulus)
* TailwindCSS UI integration
* Background jobs (Sidekiq, ActiveJob)
* API integrations (Stripe, Shopify, etc.)
✔ DevOps & Deployment
* AWS (EC2, RDS, S3)
* CI/CD pipelines
* App monitoring & logging
🧠 How I Work
* I focus on clean, maintainable Rails code
* I communicate clearly and consistently
* I think in business outcomes, not just code
* I can jump into existing projects quickly and start delivering value
🧩 Recent Types of Work
* Fixing production bugs in live SaaS platforms
* Upgrading Rails apps to Rails 7/8 + Hotwire
* Optimizing slow database queries and app performance
* Building APIs and integrating third-party services
* Acting as a fractional CTO / senior technical advisor
🛠 Core Tech Stack
* Ruby / Ruby on Rails (6, 7, 8)
* PostgreSQL, MySQL, SQLite
* Hotwire (Turbo + Stimulus)
* JavaScript (ES6+)
* TailwindCSS, HTML, CSS
* REST APIs
* AWS (EC2, S3, RDS)
📈 Availability
* Available for short-term fixes and long-term projects
* Quick turnaround on bug fixes and urgent issues
* Open to ongoing collaboration
💬 Let’s Talk
If you need a reliable Rails expert to build, fix, or scale your application - send me a message and let’s discuss your project.
Steps for completing your project
After purchasing the project, send requirements so Mark can start the project.
Delivery time starts when Mark receives requirements from you.
Mark works on your project following the steps below.
Revisions may occur after the delivery date.
Download the code repository & build.
I will download the codebase and then build the app locally.
Run our Ruby Audit software
I will run our Ruby audit software over the app to detect performance bottlenecks other general code issues.