Senior Web Engineer II: Design System & Platform

Ajaib Group; Jakarta Pusat; Hybrid; IDR 350,000,000 - 600,000,000; Full time

Benefits offered by this job

Performance Bonus

Private Insurance

Paid Time Off

Learning & Development

Hybrid Work Arrangement

Career Growth

Employee Perks

Collaborative & High-Ownership Culture

Job summary

Ajaib Group is seeking a Senior Web Engineer II to build the design system, component library, and core web tooling used by multiple product teams. You will own features from design to production, mentor peers, and collaborate with security and backend teams to ensure secure, performant web experiences.

You will work on performance budgets, CI/CD pipelines, and scalable web foundations in a remote- capable, hybrid setup, joining a fintech-focused, high-velocity environment.

Qualifications

• 5+ years of professional web engineering experience.
• Experience building shared libraries, design systems or tooling used by multiple teams.
• Strong in TypeScript and JavaScript with React/Next.js.
• Experience with monorepos, bundlers, and package publishing.
• Solid testing (unit/integration), CI/CD and error monitoring experience.
• Proficient in browser performance profiling, accessibility and web security.

Responsibilities

• Design, build and maintain shared web foundations: component library, design system, shared packages and the application shell.
• Own features end to end: technical design, implementation, testing, release and support for the teams that use them.
• Keep shared packages stable: APIs, versioning, migration guides and deprecation.
• Build accessible, themeable, well-documented components adopted by product teams.
• Improve sign-in, session, and token handling with backend and Security teams.
• Improve build speed, CI/CD pipelines, monorepo tooling and release automation.
• Set and measure performance budgets and quality standards (Core Web Vitals, bundle size).
• Write maintainable, well-tested code and conduct code reviews.
• Investigate production issues from monitoring and feedback and ship lasting fixes.
• Mentor mid-level engineers and share best practices across teams.

Skills

TypeScript

JavaScript

React

Next.js

Design systems

Monorepos

Testing (unit/integration)

CI/CD

Performance profiling

Web security

Authentication on web

Communication

Ownership mindset

Tools

Node.js

Job description

Ajaib Group is seeking a Senior Web Engineer II to build the design system, component library, and core web tooling used by multiple product teams. You will own features from design to production, mentor peers, and collaborate with security and backend teams to ensure secure, performant web experiences.

You will work on performance budgets, CI/CD pipelines, and scalable web foundations in a remote- capable, hybrid setup, joining a fintech-focused, high-velocity environment.