Frontend Engineer

Careers at Paper.id; Jakarta Pusat; On-site; IDR 300,000,000 - 600,000,000; Full time

Job summary

Paper.id is building the financial operating system for Indonesian businesses, focusing on invoicing, payments, and AR/AP. We’re seeking a frontend engineer who ships fast and treats AI as a core part of how they work.

You’ll build fast web experiences in Angular + TypeScript, collaborate across product and UI/UX, and push for quality while exploring the backend as needed. Join a team that values ownership and rapid learning.

Qualifications

• Strong fundamentals in HTML, CSS, JavaScript, and TypeScript.
• Experience with Angular 19+; React or Vue is a plus.
• Comfort consuming RESTful APIs and third-party libraries.
• Fluent with AI tools in day-to-day engineering.
• Willingness to learn across the stack and jump into unfamiliar code.
• Experience writing automated tests (unit + integration).
• Git and collaborative, agile workflows.
• Ability to ship features in an agile environment.

Responsibilities

• Build fast, reliable web experiences in Angular + TypeScript that talk to RESTful microservices
• Write clean, tested, maintainable code with attention to loading time and edge cases
• Use AI as a daily multiplier to generate code, review, debug, and write tests
• Collaborate with Product and UI/UX to turn fuzzy requirements into clear features
• Trace a bug or feature across the stack by inspecting the Go service and API contract
• Contribute beyond frontend when helpful, including backend fixes or Flutter tweaks
• Refine specs and technical requirements; push back when needed
• Maintain quality and brand consistency; stay updated on frontend and AI tooling trends
• Work in an agile team and take ownership of delivery

Skills

HTML

CSS

JavaScript

TypeScript

Angular 19+

React or Vue

RESTful APIs

AI tools in development

Testing (unit + integration)

Git & Agile workflows

Job description

At Paper.id we’re building the financial operating system for Indonesian businesses — invoicing, payments, and AR/AP that thousands of companies run their money through every day. The frontend is where that complexity has to feel effortless. We’re looking for a frontend engineer who ships fast, cares about the whole system (not just the part they own), and treats AI as a core part of how they work — not a novelty.

This is a role for someone hungry : curious enough to read the backend service behind the API they’re calling, brave enough to open a Flutter file they’ve never seen, and honest enough to ask “why are we building this?” before writing the code.

What you’ll do:

• Build fast, reliable web experiences in Angular + TypeScript that talk to our RESTful microservices
• Write clean, tested, maintainable code — and care about loading time, bundle size, and edge cases, not just the happy path
• Use AI as a daily multiplier — code generation, review, debugging, test writing, spec drafting. We expect you to be genuinely good at this, and to help the team get better at it too
• Work shoulder-to-shoulder with Product and UI/UX to turn fuzzy requirements into features users actually understand
• Trace a bug or a feature across the stack — read the Go service, follow the API contract, and understand where the data really comes from before you patch the UI
• Contribute beyond the frontend when it helps ship — a backend fix / feature implementation, a Flutter mobile tweak, a script. We value people who fill gaps over people who guard boundaries
• Help refine specs and technical requirements — push back, ask questions, propose simpler approaches
• Keep quality and brand consistency high, and stay current on where frontend and AI tooling are heading
• Work in an agile team and take real ownership of what you deliver

What we’re looking for:

• Strong fundamentals in HTML, CSS, JavaScript, and TypeScript
• Solid experience with a modern component framework — Angular 19 or above preferred ; React or Vue experience transfers well
• Comfort consuming and reasoning about RESTful APIs and third-party libraries
• You use AI tools fluently and thoughtfully in your day-to-day engineering, and can talk about where they help and where they don’t
• A genuine appetite to learn across the stack — backend, mobile, infra — and no fear of jumping into unfamiliar code
• Experience writing automated tests (unit + integration — Jest, Karma/Jasmine, Cypress, or similar)
• Comfortable with Git and collaborative, agile workflows
• Sharp problem-diagnosis instincts, creative under constraints, and a strong bias toward shipping and learning

Nice to have:

• Exposure to Flutter or another mobile framework
• Any backend experience — Go , Node, or building and consuming microservices
• Performance optimization work (bundle size, load time, rendering)
• A degree in Computer Science, Engineering, Mathematics, or a related field — but we care far more about what you can build and how fast you learn than about the diploma