Ruby on Rails Engineer

I’m Haroon Khan, a Senior Ruby on Rails Engineer who builds fast, secure, scalable web applications. I specialize in Rails APIs, SaaS platforms, PostgreSQL performance, background jobs, and payment integrations. Available for remote roles and UAE-ready work.

What I build in Ruby on Rails

REST APIs (auth, roles, rate limiting, validations)
SaaS backends (billing, subscriptions, multi-tenant patterns)
Background jobs (Sidekiq/Jobs), queues, retries, idempotency
PostgreSQL optimization (indexes, query tuning, migrations)
Payments (Stripe) + webhooks + reconciliation
Deployments (Docker, CI/CD, AWS/Heroku/DigitalOcean)

Selected work

See full projects on the main portfolio:

Projects Experience

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Keywords

Ruby on Rails developer, Rails engineer, Ruby developer, Rails API developer, PostgreSQL optimization, Stripe webhooks, Sidekiq background jobs, SaaS development, remote Rails developer, UAE Rails developer.

FAQ

Do you build Rails APIs?Yes — clean REST APIs with testing and docs.

Do you optimize PostgreSQL?Yes — indexes, query tuning, migrations.

Do you integrate Stripe?Yes — payments + webhooks + subscriptions.

Remote / UAE?Yes — remote work and UAE-ready.