You will get Fix and optimize your existing Ruby on Rails web application
Project details
I’ll help you fix the critical issues in your existing Ruby on Rails application and make it faster, more stable, and easier to maintain. Whether you’re dealing with random errors, slow pages, background jobs failing, or deployment problems, I’ll step in as a senior Rails engineer, quickly diagnose the root causes, and implement clean, production‑ready fixes. I’ve spent 14+ years working on real‑world Rails apps (including complex B2B SaaS platforms on AWS), so I know how to improve performance, harden security, and stabilize legacy code without breaking your live system.
Programming Languages
HTML & CSS, JavaScript, Ruby/Ruby on RailsCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$149
|
Standard
$299
|
Advanced
$999
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 7 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 3 | 3 |
Design Customization | - | - | |
Content Upload | - | - | - |
Responsive Design | - | - | |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$1,000
Additional Revision
+$500Frequently asked questions
3 reviews
(3)
(0)
(0)
(0)
(0)
This project doesn't have any reviews.
JM
Jacob M.
Nov 11, 2024
Post replies on Stackoverflow
ST
Shivansh T.
Oct 13, 2023
API transferring user fields
Taimoor is a wonderful person to work with. I had an urgent need to develop an API. He responded very quickly to the requirement. His work was very efficient and precise. He finished the work well within the time frame. He went above and beyond the requirement to improve the code and the structure for the future. I would definitely recommend his services !!! 100 percent !!!
MN
Muhammad Ahsan N.
Aug 20, 2015
Fixes in existing project - ror
About Taimoor
Senior Ruby on Rails Engineer | Legacy Rails Upgrades & Scalable APIs
Lahore, Pakistan - 3:01 am local time
🏅 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝–𝐥𝐞𝐯𝐞𝐥 𝐑𝐮𝐛𝐲 𝐨𝐧 𝐑𝐚𝐢𝐥𝐬 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 with 𝟏𝟓+ 𝐲𝐞𝐚𝐫𝐬 building and leading production systems
🥇 Top 4% Talent on Stackoverflow
🥇 Impact on community, reach ~ 9.4 million
🥇 Exceptional English Conversation skills
✅ Led and delivered large-scale platforms used by enterprise clients, including complex products like Sendoso
🌟 Deep expertise in legacy Rails (2.x–7.x) upgrades, zero-downtime migrations, and system refactoring
🏅 Architect of high-volume APIs, background processing systems, and CRM integrations (Salesforce, HubSpot)
✅ 𝐒𝐭𝐫𝐨𝐧𝐠 𝐭𝐞𝐬𝐭𝐢𝐧𝐠 𝐜𝐮𝐥𝐭𝐮𝐫𝐞 advocate (RSpec, DRY, TDD/BDD) with public talks and long-term community contribution
🌟 Trusted technical partner for founders, CTOs, and product teams handling business-critical software
𝐀𝐛𝐨𝐮𝐭 𝐦𝐞:
I’m a Lead Full-Stack Engineer specializing in Ruby on Rails backends with modern JavaScript frontends. I work with teams that already have a real product not prototypes and need someone who can understand existing codebases quickly, make safe architectural decisions, and deliver changes that won’t break production six months later. My strength is handling complexity legacy code, scale, data integrity, third-party integrations, and performance under real-world load.
𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝐈 𝐎𝐟𝐟𝐞𝐫:
✓ Ruby on Rails Development
Updating, Designing, extending, and maintaining production Rails applications (Rails 3.x–7.x)
✓ Legacy Rails Upgrades & Migrations
Upgrading old Rails apps with zero or minimal downtime and full data safety
✓ API & Backend Architecture
RESTful APIs, GraphQL, background jobs, and scalable service design
✓ CRM & Third-Party Integrations
Salesforce, HubSpot, payment gateways, and custom API integrations, Also I have experience with Gong, Eloqua, SurveyMonkey, Marketo, Bambo HR etc
✓ Performance & Database Optimization
PostgreSQL/MySQL tuning, query optimization, and high-volume data processing
✓ Full-Stack Feature Development
Rails backend + Vue.js / TypeScript frontend implementations
✓ Automated Testing & Code Quality
RSpec-driven test suites, refactoring, and long-term maintainability
✓ Cloud Deployment & Infrastructure Support
AWS, Heroku, background workers, and production troubleshooting
𝐓𝐨𝐨𝐥𝐬 & 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 𝐈 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡
Backend & Frameworks
Ruby on Rails, Ruby, RESTful APIs, GraphQL
Frontend & UI
JavaScript, Vue.js, TypeScript, HTML5, CSS3
Databases & Data
PostgreSQL, MySQL, MongoDB, Redis
Cloud & Infrastructure
AWS, Heroku, Nginx, Puma, Background Jobs
Integrations & Automation
Salesforce, HubSpot, Payment Gateways, Webhooks
Testing & Collaboration
RSpec, Jira, Git, CI/CD Workflows
If you're serious about results, message me now. I respond fast and deliver faster.
✅ Relevant Skills & Keywords:
Ruby on Rails, Senior Ruby on Rails Developer, Lead Rails Engineer, Ruby Developer, Full Stack Ruby on Rails Developer, Backend Engineer, Rails Architect, Enterprise Rails Developer, SaaS Application Development, Legacy Rails Upgrade, Rails 2 to Rails 7 Upgrade, Rails Migration Specialist, Zero Downtime Deployment, Rails Refactoring, Rails Performance Optimization, Rails API Development, RESTful API, GraphQL API, API Integration, Third-Party API Integration, Salesforce Integration, HubSpot Integration, CRM Integration, Payment Gateway Integration, Stripe Integration, Background Jobs, Sidekiq, Redis, High Volume Data Processing, CSV Import Processing, Data Validation Systems, PostgreSQL, MySQL, MongoDB, Database Optimization, Query Optimization, ActiveRecord Optimization, Web Application Development, Scalable Web Applications, High Traffic Applications, Vue.js, JavaScript, TypeScript, HTML5, CSS3, SPA Development, Frontend and Backend Integration, AWS, Amazon Web Services, Heroku Deployment, Cloud Infrastructure, Nginx, Puma, Linux Server, Production Debugging, Application Maintenance, Long-Term Support, Codebase Ownership, RSpec Testing, Automated Testing, TDD, BDD, DRY Principles, Technical Leadership, Engineering Lead, Code Reviews, Architecture Design, Startup to Enterprise Systems
Steps for completing your project
After purchasing the project, send requirements so Taimoor can start the project.
Delivery time starts when Taimoor receives requirements from you.
Taimoor works on your project following the steps below.
Revisions may occur after the delivery date.
Code & Issue Review
I review your requirements, access your repo and app, reproduce the issues, and identify root causes.
Plan & Approval
I share a short, prioritized fix/optimization plan with you and confirm scope and impact.