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KitaLulus

Senior Full Stack Engineer (KLI-90)

Asia

September 9, 2026 at 2:50 AM

✨ AI summary

Location

  • Jakarta, Indonesia

Languages

  • TypeScript

Frameworks

  • React
  • Next.js

Experience Level

  • 6+ years full‑stack engineering experience
Responsibilities

  • Build and maintain complex multi-step application and onboarding journeys, including validation, document uploads, resumable states, and KYC flows.
  • Develop customer, dealer, and operations portals using TypeScript, React, and Next.js.
  • Build backend use cases, APIs, database queries, and integrations — this is not a UI-only role.
  • Integrate with CRM, workflow engines, compliance services, credit systems, and other external platforms.
  • Ensure accurate data mapping and reliable end-to-end application flows.
  • Develop and maintain E2E tests for critical customer journeys.
  • Collaborate with engineering teams in Berlin and product/operations teams in Switzerland.
  • Contribute to specification-driven and AI-assisted development.

Requirements

  • 6+ years of full-stack engineering experience with TypeScript.
  • Strong recent production experience with React and Next.js App Router.
  • Mandatory: Experience working with fintech or regulated financial products.
  • Proven experience owning complex onboarding or application flows.
  • Strong backend capabilities, including APIs, databases, business logic, and system integrations.
  • Experience with state management and data-fetching tools such as Zustand or TanStack Query.
  • Experience with React Hook Form/Formik and Zod is preferred.
  • Experience with Playwright or Cypress for E2E testing.
  • Experience building multi-language/internationalised applications.
  • Professional English communication skills.
  • Experience with KYC, AML, credit/identity verification, or workflow/BPM integration is a plus.
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