Rails consultant for hire
I’m Haseeb Annadamban, a senior Ruby on Rails engineer with 10 years of production experience, and I’m currently available for remote contract work. If you’re searching for a Rails consultant for hire or want to hire a Ruby on Rails developer who can own a hard problem end to end, you can work directly with me — from the first investigation through implementation and handoff.
You can inspect my code on GitHub, where I contribute to established open-source Rails projects.
Contract engagements I take on
- Rails, PostgreSQL, and Sidekiq performance improvements
- Rails upgrades and legacy application modernization
- APIs, third-party integrations, and background processing
- AI-assisted features inside an existing Rails product
- Difficult production issues and fragile operational processes
Each engagement starts with a baseline so we can measure what changed, and ends with reviewable changes, tests, and documentation.
Case studies
- Cut a SaaS dashboard’s load time from over two seconds to under 200ms — client production result.
- Gumroad Products API: SQL events reduced from 103 to 23 — mean request duration down 40.4% in a ten-product benchmark.
- Discourse admin active-users endpoint: mean request time down 66.5% — per-user 2FA checks replaced with batched queries.
- OpenProject Work Packages API: 762 repeated queries eliminated — median server duration down 55.7%.
Rates
I bill at $50 per hour. Performance engagements begin with an 80-hour scope to diagnose production bottlenecks, ship high-impact fixes, and measure the results. Other engagements are scoped to a defined outcome before we start — see the services page for how each engagement is structured.