Umaima Zulfiqar

Senior Ruby on rails developer

Icons/solid/beacher 5 xp
Remote
Icons/solid/euro 80 K$ yearly
Available
Icons/solid/globe europe africa Pakistan 🇵🇰

About me

I’ve spent the last 5+ years building and operating Ruby on Rails backends that sit at the core of revenue-critical products, payments, checkout flows, real-time user experiences, and third-party integrations, while steadily improving reliability and performance.
Relevant experience aligned to your needs:
• Designed and shipped Rails 7 applications supporting e-commerce workflows, including checkout, refunds, and webhook-driven state changes (Stripe).
• Built API-first backends (REST/JSON) with clear authorization, background processing (Sidekiq/Redis), and test coverage (RSpec, Cucumber) to reduce regressions in production.
• Improved performance and UX via Hotwire/Turbo Streams for real-time updates, minimizing client complexity while keeping backend logic explicit.
• Delivered features end-to-end in small teams, balancing speed with safe migrations, incremental refactors, and backward compatibility.
• Worked closely with product and non-engineering stakeholders, translating requirements into stable backend designs that scale.
Proof of execution:
At Infinikorn, I owned backend delivery for multiple Rails applications, including a production e-commerce panel with cash-on-delivery and Stripe payments, handling webhooks, failure modes, and refunds end to end. I’ve also shipped API-driven systems integrating OpenAI and Twilio while maintaining clear operational boundaries.

Developer Information

Contact details.

Work preferences

Actively looking
Icons/solid/briefcase Remote

Type of roles

🎯 Full time job
🏝 Freelance
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