Frontend Engineer

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