Frontend Engineering Lead
We're looking for an experienced Frontend Engineering Lead to join a large-scale digital product environment.
This is a hands-on engineering role for someone who still wants to spend the majority of their time close to the technology, while also providing technical direction and supporting a small team of engineers.
You'll work across high-traffic customer-facing products, helping shape frontend architecture, improve performance and engineering standards, and make practical technical decisions as the platform continues to evolve.
The role is approximately
6
0% hands-on engineering and 40% technical and team leadership
.
What You'll Be Doing
Design and build modern frontend applications using React and TypeScript
Make architectural decisions across complex frontend systems
Work with micro-frontends, monorepos and shared frontend platforms
Break down larger technical problems into practical engineering solutions
Improve application performance, reliability and maintainability
Identify and address frontend performance issues, including Core Web Vitals
Review code and help maintain high engineering standards
Guide engineers through technical decisions and complex problems
Mentor and support a small team of frontend engineers
Work closely with Product, Design, Backend, QA and other engineering teams
Contribute to system design discussions and longer-term technical direction
Balance technical quality with delivery timelines and business priorities
Help improve testing, observability and engineering practices across the team
You'll need strong hands-on frontend engineering experience and enough technical depth to lead engineering decisions rather than simply manage delivery.
Ideally, you'll bring:
Strong commercial experience with React and TypeScript and modern JavaScript
Experience designing and building large or complex frontend applications
Strong understanding of frontend architecture and system design
Experience with micro-frontends and/or monorepo environments




Experience improving frontend performance and Core Web Vitals
Good understanding of rendering, browser performance and application behaviour
Experience with automated testing and up-to-date frontend engineering practices
Experience working with APIs and distributed backend systems
Strong code review and technical problem-solving skills
Experience mentoring or technically leading other engineers
Ability to explain technical decisions, trade-offs and alternative approaches clearly
Experience working in cross-functional product and engineering teams
You'll remain hands-on while helping a small engineering team perform at a high level.
That could include:
Supporting engineers with technical problems
Providing feedback through code and design reviews
Mentoring engineers and helping develop their capability
Setting technical standards
Helping resolve disagreements around technical direction
Working with individuals when performance or delivery issues arise
Creating an environment where engineers can make good decisions independently
Experience across some of the following would be useful:
React
TypeScript / JavaScript
Micro-frontends
Monorepos
Modern frontend build tooling
Automated testing
CI/CD
Observability and monitoring
Web performance
Core Web Vitals
APIs and distributed systems
Cloud-based production environments
You don't need to have used every technology listed, but you should have worked on complex production frontend systems where performance, scale and maintainability matter.
You'll suit this role if you're comfortable moving between writing code, reviewing architecture, helping another engineer solve a problem and discussing technical trade-offs with stakeholders.
You should be able to go deeper than simply describing what technology you used. We're looking for someone who can explain why decisions were made, what alternatives were considered, what could fail and how the system behaves at scale.
Location: Sydney
This role includes regular office-based collaboration, with the team currently workingfour days per week.
#J-*****-Ljbffr

📌 Team Lead - Core Web (Sydney)
🏢 The Onset
📍 Sydney