Full-Stack Product Engineer (Senior)

Apex Research, based in Islamabad, Pakistan, is seeking a Senior Product Engineer to join their on-site team full-time. The ideal candidate will have over five years of experience in building production web applications and will play a critical role in developing a SaaS CRM and internal operations platform. This platform supports Coastal Research, Policy Limit Research, and PolicyTrace AI, providing insurance policy limit research, due diligence, and skip-trace services tailored for US personal injury law firms. The technology stack includes a multi-tenant SaaS running on AWS, featuring a Node.js backend, Next.js applications, partner REST APIs, CRM connectors, AI processing services, and automated report delivery.

Key Responsibilities
Define and implement the component architecture and data-fetching patterns for the CRM using Next.js (App Router), React 19, and TypeScript, all within the company’s design token system. Develop core features such as the shared email inbox, sales pipeline board, saved views, and timeline experiences, along with the corresponding Express endpoints. Build and optimize data-intensive views including filterable tables, date-range and prior-period comparisons, charts, drill-downs, bulk actions, and CSV export functionality. Utilize TanStack Query for managing server state and server-sent events to enable live updates, designing an invalidation map to maintain screen consistency. Collaborate with the Software Development Engineer in Test (SDET) to establish and maintain a Playwright test suite, while ensuring linting and type checks remain error-free. Conduct thorough code reviews and provide mentorship to mid-level and junior engineers. Maintain high standards for render performance and accessibility, ensuring the platform remains efficient and user-friendly for staff who rely on it daily.

Required Qualifications
A minimum of five years’ experience in building production web applications, with at least two years working extensively with React and TypeScript, and at least one year using Next.js App Router. Proven track record of shipping complex admin, dashboard, inbox, or CRM products featuring advanced tables, filters, and role-based permissions. Strong proficiency in Node.js and Express, capable of writing and reviewing backend endpoints. Experience with TanStack Query or a similar server-state management library. Hands-on experience writing Playwright or Cypress tests for your own features. Demonstrated ability to establish frontend conventions and review code within a team environment.

Preferred Qualifications
Experience building real-time, multi-user interfaces such as inboxes, kanban boards, or pipeline boards. Familiarity with TanStack Table or similar data-grid libraries, especially when handling large datasets. Knowledge of Prisma and PostgreSQL is a plus.

This role offers the opportunity to lead the frontend architecture and development of a sophisticated SaaS platform that supports critical legal research services. The successful candidate will work closely with a dedicated product team, shaping the technical direction and mentoring engineers while delivering high-impact features.