Lead Front-end Engineer

2 days ago

City Of Stirling, Australia Testfully Pty Full time
Location: Remote (Requires 4 hours overlap with Australia AEST)Employment: Long-term contractor (full-time, 40h/w).
You'll invoicemonthly; standard Net-14 terms.
Hiring entity: Testfully Pty Ltd (Australia).
The Opportunity: Build for developers, at scale At Testfully, you'll ship tools used worldwide and take on hard technicalproblems—fast UIs, reliable runtimes, and thoughtful DX—owning solutionsend-to-end.
If you enjoy hard problems and clean solutions, you wantownership and momentum, you'll fit right in.
The Role: Make Developer Life Easier You'll spend ~90% of your time shipping product — roughly 70% businesslogic / 30% UI.
Build core product logic (Type Script).
Ship maintainable modules sharedacross Web, Desktop, CLI, and extensions using clear patterns andarchitecture.
Create reusable UI (React).
Contribute to our design system(Type Script, Radix UI, Tailwind) in an Nx monorepo.
Ship micro-frontends.
Deliver Web/Desktop features using our designsystem, Akita (state) and Rx JS (reactive flows).
Extend the CLI.
Add features and keep parity with the apps via shared Type Script packages.
Shape architecture.
Partner with the CTO on decisions that guide how webuild.
The Fit: Curious, Gritty, Type Script-First, React-Savvy You learn fast, love hard problems, work independently, and hold yourselfaccountable end-to-end.
You turn ambiguity into shippable steps and communicatecrisply.
We expect the following technical competencies: Expert in React.
Shipped large-scale, stateful apps that solve complexbusiness problems; strong in component design, performance, and accessibility.
Design systems.
Built reusable component libraries with React and Tailwind CSS; think in tokens, composition, and maintainability.
Bonus.
Experience with Rust, Golang, Graph QL, Rx JS, or prior work on developer tools.
AI at Testfully: Human-Led, AI-Accelerated AI is an enabler, not a replacement.
We build with Claude Code in theloop—today, 100% of new features use AI for coding, tests, docs, andexploration—while human judgment and ownership decide what ships.
You'reexpected to leverage AI daily, then apply your expertise to refine, verify, andbe accountable for outcomes.
We also push back hard on low-quality outputs: No AI slop.
Reject or rewrite weak suggestions; keep code readable and type-safe.
Design autocomplete.
Don't accept choices that harm DX, performance, accessibility, or API clarity.
Proven code only.
Ship with meaningful tests, docs/migrations, and profiling where it matters.
If you're not excited to use AI and stand behind the result, this role isn't a fit.
When This Role Isn't a Fit Hands-off approach.
Early-stage startup = everyone ships, debugs, documents, and helps shape the product.
No bystanders.
Low tolerance for ambiguity.
Priorities shift.
You'll need to self-direct, make calls with incomplete info, and adapt quickly.
Avoids direct feedback.
We use real-time, candid feedback to move fast and raise quality—always with respect and care.
How to Apply Email talent@testfully.io with subject: Lead Front-end Engineer (React, Type Script).
A short cover note with relevant experience and expected monthly rate.(Optional) links to Git Hub/portfolio/OSSWe'll review and get back to you with next steps.
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