Senior Fullstack Engineer (Frontend Leaning)

Onset Group; Sydney; In loco; AUD 120.000 - 180.000; Tempo pieno

Vantaggi offerti da questo lavoro

Office: 2 days per week

Descrizione del lavoro

Onset Group is seeking a Senior / Staff Full Stack Engineer (Frontend Leaning) to join their Sydney team on a 6-month contract with potential extension. The role focuses on building a new customer data and audience activation platform, with emphasis on scalable frontend applications using React and TypeScript.

You'll work across the stack, architecting data-heavy solutions and delivering features from concept through production, collaborating with business stakeholders and other engineers.

Competenze

• Experience building complex React/TypeScript frontends.
• Strong full-stack capabilities including backend integration.
• Ability to own major features from design through delivery.
• Knowledge of frontend architecture, state management, and performance.

Mansioni

• Designing and building a complex, data-rich web app using React and TypeScript.
• Developing dashboards, audience management tools and advanced filtering interfaces.
• Building rule-based segmentation tools with nested conditions and dynamic filters.
• Integrating frontend with backend services, APIs and data platforms.
• Contributing to technical architecture and engineering decisions.
• Collaborating with stakeholders to translate requirements into practical solutions.
• Establishing reusable components and maintainable frontend architecture.
• Taking ownership of features from design to production.

Conoscenze

React

TypeScript

Full stack

API integration

Frontend architecture

Data-heavy apps

Dashboard development

Descrizione del lavoro

Job Description

Senior / Staff Full Stack Engineer (Frontend Leaning) Location: Sydney, NSW

Engagement: 6-month contract + extension

The Opportunity

We're working with a large Australian organisation looking for an experienced Full Stack Engineer with strong

frontend expertise to help build a new customer data and audience activation platform.

The platform will bring together customer data, audience segmentation and advertising activation into a single application, giving teams better tools to create, manage and activate customer audiences across digital channels.

You'll work across the stack, with a particular focus on building intuitive, scalable frontend applications using React and TypeScript.

What You'll Be Working On

• Designing and building a complex, data-rich web application using React and TypeScript.
• Developing interactive dashboards, audience management tools and advanced filtering interfaces.
• Building rule-based segmentation tools with nested conditions, dynamic filters and complex user interactions.
• Integrating frontend applications with backend services, APIs and data platforms.
• Contributing to technical architecture, application design and engineering decisions.
• Working with engineers and business stakeholders to turn complex requirements into practical solutions.
• Helping establish engineering standards, reusable components and maintainable application architecture.
• Taking ownership of features from initial design through to production.

What We're Looking For

• Strong commercial experience building complex applications with React and TypeScript.
• Solid full stack engineering experience, including backend development and API integration.
• Experience building greenfield products or owning major features from design through to delivery.
• Strong understanding of frontend architecture, component design, state management and application performance.
• Experience working with data-heavy applications, dashboards, workflow tools or complex business logic.
• Ability to make sound technical decisions and work through ambiguous requirements.
• Strong communication skills and the ability to work closely with technical and non-technical stakeholders.
• A hands-on engineering approach, regardless of seniority.

Nice to Have

• Experience with Java, Kotlin or JVM-based backend services.
• Exposure to cloud platforms, distributed systems or event-driven architectures.
• Experience building SaaS platforms, internal products, analytics tools or data management applications.
• Experience working with customer data, advertising technology, retail technology or audience segmentation.
• Experience mentoring engineers or contributing to broader technical direction.

Office:2 days per week

Why Consider This Opportunity?

You’ll have the opportunity to help shape a new product from its early stages, influence technical decisions and build software used to manage complex customer data and advertising workflows.

The work combines modern frontend engineering with meaningful backend integration, complex business logic and greenfield product development.

It’s particularly suited to engineers who enjoy building products from scratch, taking ownership and working across the stack without losing their frontend specialisation.