Qureos

FIND_THE_RIGHTJOB.

Senior Full Stack Engineer

Karachi, Pakistan

Senior Fullstack Engineer (Next.js 15, React 19, TypeScript + Ruby on Rails 7.1) (7+ yrs)

Responsibilities

· Design, develop, and maintain scalable fullstack web applications.

· Build robust GraphQL APIs using Ruby on Rails 7.1.

· Implement modern, responsive UIs with Next.js 15, React 19, and TypeScript.

· Collaborate with product managers, designers, and engineers to deliver features end-to-end.

· Ensure application security, performance, and maintainability.

· Lead code reviews, mentor junior engineers, and enforce best practices.

· Deploy, monitor, and maintain services using Docker and Kamal.

Requirements

· 7+ years of experience.

· Strong expertise in Ruby on Rails, React, and TypeScript.

· Experience with multi-tenant SaaS applications.

· Knowledge of authentication/authorization frameworks and state management.

· Familiarity with CI/CD pipelines and Docker-based deployments.

· Strong problem-solving, debugging, and communication skills.

Tech Stack

· Backend: Ruby on Rails 7.1, GraphQL-Ruby, PostgreSQL, Apartment, Devise, Cancancan, Rolify, Solid Queue, Solid Cache, Mission Control Jobs, Ransack

· Frontend: Next.js 15, React 19, TypeScript, Zustand, Radix UI, Tailwind CSS, React Hook Form, Zod, Tiptap, DnD Kit, TanStack React Table, Next-Intl, Next-Auth, Recharts

· Tools: Apollo Client, Google Cloud Storage, Roo, Down, Lograge, Brakeman

· Deployment: Kamal (Docker-based)

Job Types: Full-time, Contract

Pay: Rs400,000.00 - Rs900,000.00 per month

Work Location: In person

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