Write code that makes the heart of this trading machine beat.

Software Engineer (C++)

Hands-on development role focused on exchange connectivity and rapid execution

The mission

This global High-Frequency Trading ("HFT") firm provides liquidity to global markets, keeping trading action alive globally, open to close. Their two opportunities to win are:

1. Relentlessly developing trading strategies that capitalise on opportunities while they exist
2. Executing on them while they exist, before their competitors*

*Here's where you fit in.

The team

A collection of the world's sharpest mathematical, logical and technical minds across trading, engineering, IT and operations. You'll find your place in a group of engineers responsible for driving excellence in:

• Hardware: FPGAs keep things fast and customisable
• Software: Java, C++, CUDA, Python*
• ML: Actually, this is a secret

*These folks, your new colleagues are divided between core teams, and teams attached to particular trading activities

The control room

State-of-the-art office and lab environment fit for the market's most sought-after talent, complete with the following benefits:

• Generous paid parental leave
• Catered meals, barista coffees, well-stocked kitchen
• Volunteering opportunities, charitable donation matching
• A stacked social calendar
• Family days

The problem

• Insane socio-economic climate + headlines that could be Black Mirror episode titles = market volatility
• Volatility = growth for HFT firms equipped to capitalise (like this one)
• Growth = more brainpower needed to stay ahead

The solution

An engineer with a winning mindset, and likely experience and knowledge of:

• Modern C++ (on Linux) in ultra-low latency CI/CD environments
• Genuine ground-up "build" projects
• Thriving in high-pressure, often ambiguous circumstances
• Outstanding academics in Computer Science, Maths, Physics

Still reading?

Let's explore.

Senior Java Engineer - Build Scalable Systems & Shape the Future of AI Contract & Perm available
💰 Contract Daily Rate: up to $1,050 inc. Super or open to permanent candidates for $175K - $195K + Super + Bonus 

📍 Sydney | 🔄 Hybrid (3 days in office)

Are you an exceptional Senior - Staff level Java engineer who thrives in scalable system design and loves the challenge of AI-driven projects?

Join a company where engineering excellence, modern tech, and financial stability create the perfect environment for you to take ownership and influence best practices—without needing to manage people.

Why You’ll Love This Role
👉🏽Build at Scale – Tackle complex engineering problems as we scale our systems and integrate AI-driven initiatives.
👉🏽End-to-End Ownership – Drive features from idea to production, ensuring performance, security, and reliability.
👉🏽High-Performing Team – Work alongside top engineers from some of the best tech companies, in an environment that values technical mastery and innovation.
👉🏽Hybrid Work Model – Enjoy flexibility with 3 days in-office, fostering collaboration while keeping work-life balance.
👉🏽Long-Term Stability & Growth – Join a company where people stay for years (some over 20!) because of the strong culture, leadership, and career progression.

What You’ll Be Doing
🚀 Design & build scalable, resilient back-end services using Java, and Spring Boot.
🚀 Enhance platform reliability with Kubernetes and cloud-native technologies (AWS/GCP).
🚀 Collaborate on AI-powered projects, applying innovative solutions to real-world challenges.
🚀 Influence best practices & architectural decisions across engineering teams.
🚀 Work across the stack when needed (occasional front-end work, but backend is the focus).

What You’ll Bring
✅ 8+ years of Java development experience (backend or full stack).
✅ Strong knowledge of Spring Boot, microservices, and scalable architectures.
✅ Hands-on experience with AWS or GCP and Kubernetes.
✅ Passion for high-quality code, performance, and engineering best practices.
✅ Ability to drive technical improvements and mentor engineers without formal management.

Why Now? The company is scaling fast, working on cutting-edge AI projects, and doubling down on engineering excellence. If you’re looking for a role where you can make an impact, work with top engineers, and grow your career, this is it.

🔹 Apply now and be part of a team where innovation meets stability!

Head of Primary Learning

We’re working with a growing, well-resourced education provider seeking a Head of Primary Learning to lead their academic programs. This is a strategic leadership role focused on scaling operations, improving student outcomes, and overseeing curriculum design and delivery across both in-person and digital channels.

Key areas of responsibility include:

• Designing and managing 'Primary Learning' programs aligned with curriculum and assessment standards

• Leading a team of educators and operational staff

• Overseeing delivery of classroom and digital content (via LMS)

• Owning department-level planning, operations, and budget

• Partnering with internal teams on product, tech, and enrolment strategy

What we’re looking for:

• Background in education (preferably primary) with strong understanding of the Australian curriculum

• Proven leadership experience in an academic or commercial education setting

• Track record of improving learning outcomes and delivering high-quality programs

• Comfortable operating in a fast-paced, outcomes-driven environment

This is a hands-on leadership role with clear growth opportunity and influence across the wider organisation. Suitable for a senior educator or curriculum lead looking to step into a broader role with strategic and commercial oversight.

To apply, submit your CV or contact Megan Ngo directly for more information on 0415 786 968.

HR/People & Culture Lead | Permanent Part-Time 

• Play a key role in scaling a global fintech
• Introduce and implement HR best practice frameworks
• Circa $140k - $160k plus super pro rata

As this fast-growing fintech expands its presence across global markets, the time has come to appoint a seasoned HR/People and Culture Lead to own and evolve the HR function.  This is a permanent part-time opportunity (2-3 days a week) with the autonomy to shape strategy, streamline operations, and make an impact on people, culture and employee experience.

The Opportunity

In this broad role, you'll be the driver of all things HR from compliance and onboarding to performance, engagement and leadership support.  Your responsibilities will include:

• Designing and implementing an HR strategy aligned to business and people goals.

• Overseeing recruitment processes and supporting hiring managers, including job design, JD reviews, and recruiter coordination.

• Conducting onboarding and induction programs for new hires.

• Responding to employee inquiries regarding policies, benefits, and payroll.

• Handling day-to-day employee relations issues and acting as a trusted partner.

• Driving employee engagement initiatives and collaboration across teams.

• Developing and delivering learning and development programs.

• Conducting or facilitating employee training sessions.

• Managing the full performance management cycle.

• Advising on organisational structure, workforce planning and change.

• Ensuring compliance with workplace laws across Australia, the UK and Ireland.

• Engaging with legal advisers and updating policies as needed.

• Maintaining and updating HRIS (BambooHR), ensuring data accuracy.

• Analysing HR metrics and preparing workforce insights for leadership.

Experience Required to Make an Impact

• Generalist HR experience in a fast-paced or growing business

• Deep understanding of HR best practices, legislation, and compliance.

• Strong employee relations and stakeholder engagement skills.

• Experience with HRIS platforms (e.g., BambooHR, EmploymentHero).

• A strategic mindset with a hands-on, delivery-first approach.

• Confidence advising leadership and influencing across the business.

• A passion for creating a positive, high-performance culture.

Keen to find more more?  Apply online or call Michelle Rubinstein at The Onset on 0413 463 043.

We’re on the lookout for a Senior Product Manager to join this companies core product team, focusing on delivering an exceptional end-to-end experience for their loyal customers. This is a senior individual contributor role, perfect for someone who thrives in ambiguity, loves solving hard customer problems, and can quickly bring clarity and focus to a fast-moving team.

The Opportunity

This role sits at the heart of the business, shaping the entire digital experience across web and mobile - from acquisition through to customer account management and beyond. You’ll play a key role in defining, testing, and delivering solutions that create real value for customers while setting the groundwork for the future of their platform.

They are in the final stages of a major architectural rebuild, setting the foundations for faster iteration and feature development in 2026 and beyond. This is a chance to influence both the long-term product direction and immediate customer experience.

While this role is focused on digital, you’ll also work in a uniquely complex environment where the physical and digital worlds intersect — scaling a product that combines real-world operations with a seamless online experience.

What You’ll Do

• Own a high-impact product area end-to-end, from discovery through delivery and iteration

• Turn big, ambiguous problem spaces into clear, testable opportunities

• Use data and customer insights to shape decisions and prioritise effectively

• Partner with design, engineering, and data to experiment rapidly and reduce time to insight

• Balance short-term execution with laying the foundations for future growth

• Feed learnings and outcomes back into broader product strategy discussions

What We’re Looking For

• Experience as a Senior Product Manager in a high-growth environment, ideally in direct-to-consumer or subscription-based products

• Proven ability to bring focus and clarity to ambiguous problem spaces

• Strong collaboration skills, particularly with engineering, data, and design

• Pragmatic, fast-moving, and comfortable making smart trade-offs to protect speed and value delivery

• Curious about the intersection of physical and digital products and how they work together to create great customer experiences

• Skilled at solving real customer problems, not just shipping features

Why This Role?

• Join one of Australia’s most exciting scale-ups, in a high-demand and high-purpose category

• Work on a product that blends digital experiences with real-world operations - complex, defensible, and impossible to replicate with code alone

• Be part of a mission-led company making a genuine difference in people’s (and their loves ones) lives

• Hybrid role based in Sydney, with the benefits of in-person collaboration balanced with flexible work-from-home days

If you feel like you're suitable for this role apply here and/or email your resume to tania@theonset.com.au. You need to be on the ground in Australia, ideally with full working rights. Sponsorship is potentially available for certain candidates. 

So many job ads talk about "accountability"—but here, it's all about opportunity.

As the project architect, creator, and strategist, you’ll lead engagements end-to-end. You’ll be trusted to run delivery while tapping into internal and external support as needed. It’s a high-trust culture that rewards autonomy and craftsmanship.

Most projects are Sydney-based, with some travel to Melbourne and Singapore. Work spans across advanced financial services, medical technology, and scaling tech platforms.

This is not a notebook-hacking role. We’re looking for someone who builds clean, reproducible, and well-organised production-grade code—combining the rigour of engineering with the insight of data science.

Ideal Candidate:

• 3–5 years' experience as a Data Scientist with a Data Engineering edge

• Proficient in Python (R, SAS, etc. are not core to this environment)

• Practical experience with classical ML libraries: XGBoost, NLTK, Scikit-learn, etc.

• Solid background in data engineering workflows:

  • Data ingestion and cleansing

  • Feature engineering

  • Testing frameworks and reproducibility

• A disciplined approach to coding—clean architecture, version control, and documentation are second nature

This strategic consultancy offers a flexible, adult working environment where delivery quality matters more than hours logged. Most projects are open source and cloud-native, with a strong commercial edge.

Why join?

• High-performance bonus program with proven track record

• Strong APAC presence and high-impact projects

• Health, insurance, and lifestyle benefits

• Flexibility in working style and location

Sound like you? Contact Ronny at ronny@theonset.com.au or 0448 808 848 for a confidential discussion.

Join a leading data-driven enterprise working at the forefront of retail innovation. As a Machine Learning Engineer, you’ll design, scale, and deploy production-grade ML solutions that solve complex business challenges and deliver tangible impact across high-traffic platforms.

This is an opportunity to work in a modern, cloud-native environment alongside top-tier Data Scientists and Engineers, using the latest in GCP technologies and orchestration tools.

What You’ll Do:

• Build, deploy, and maintain scalable ML pipelines using Google Cloud technologies.

• Develop robust data models, APIs, and predictive solutions to solve business-critical problems.

• Collaborate closely with cross-functional teams in an agile setting to deliver high-impact data products.

• Champion engineering best practices, testing frameworks, and architectural reviews to ensure quality and reliability.

• Drive innovation through continuous learning and the adoption of new technologies and frameworks.

What You’ll Bring:

• Bachelor’s degree or higher in Computer Science, Engineering, or a related field.

• 3+ years of experience in commercial software development.

• 2+ years of hands-on experience with Python, SQL, and Linux environments.

• Experience with ML orchestration tools such as Vertex AI Pipelines, Kubeflow, Argo, or Airflow.

• Proficiency with Docker or Kubernetes for containerized deployments.

• Familiarity with modern ML methods (e.g., GNNs, LLMs) and MLOps best practices.

• Exposure to microservices architecture and tools like dbt core is a plus.

Why Join?

• Be part of high-impact projects that blend data science and software engineering.

• Work in a flexible, inclusive, and innovation-focused environment.

• Access cutting-edge tools and cloud technologies.

• Grow your career with continuous learning and hands-on experience in solving real-world problems.

Lead Product Designer

Full-time | Hybrid (Sydney)

About the Role

We’re looking for a talented Product Designer to join a fast-growing SaaS scale-up on a mission to redefine how complex workflows are managed in enterprise environments. This is an opportunity to join a high-impact team at a pivotal stage of growth, designing for a platform with ambitious plans to expand globally and integrate cutting-edge AI capabilities.

You’ll have a key role in shaping the user experience across the product suite, solving challenging design problems, and driving improvements that make a measurable difference for thousands of users.

What You’ll Be Doing

• Lead major UI/UX improvements across the platform, with an immediate focus on redesigning our intake and matter management product, modernising workflows, and introducing a new design system.

• Conduct deep user research and discovery to build a more robust understanding of target user personas and embed this thinking in every design decision.

• Work closely with product managers, engineers, and stakeholders to conceptualise, prototype, and deliver experiences that delight users while driving business outcomes.

• Build and evolve a scalable design system, improving consistency and design quality across a large and complex product surface area.

• Influence not just execution but product direction, bringing user insights into roadmap conversations.

What Success Looks Like (6–12 Months)

• A significant uplift in UI quality and design consistency across the platform.

• Improved team understanding of user personas, backed by strong discovery and research.

• A well-defined and adopted design system powering faster, higher-quality iterations.

• Strong design leadership in tackling historical product design debt, making workflows simpler and more intuitive.

What We’re Looking For

• 5+ years of experience in product design for SaaS, ideally within complex workflow or enterprise platforms.

• Strong UX strategy and UI execution skills, with experience running discovery and user testing.

• Proven track record of developing or scaling design systems.

• Proficiency with Figma and familiarity with component libraries like Storybook.

• Ability to collaborate effectively, influencing product direction as well as execution.

• Bonus: exposure to AI-powered products or front-end development.

Why This Role is Exciting

• Impact: The platform is undergoing a full UI/UX overhaul - your work will be highly visible and transformational.

• Growth: Opportunity to design new AI-powered features and help shape the future of a market-leading product.

• Culture: Join a small, high-performing, and ambitious team where design is valued at the leadership level.

• Flexibility & benefits: Competitive salary, equity options, hybrid work model, and strong investment in your professional development.

Please apply with resume and portfolio showcasing clearly your design process as well as previous enterprise level work. This role is not suitable for junior designers or graphic designers so please read carefully and gauge suitability when applying. Feel free to apply here or shoot your resume and portfolio to tania@theonset.com.au

This role is based in Sydney and you must have full rights to work in Australia to be eligible for the role.

#LI-AL1

Front End Engineer 

Preventative health | Vue.js, Node,js, AWS
Sydney | $140K - $160K + super + ESOP | Hybrid (2 days in-office)

Sshh! Can You Keep a SECRET?

Specialist Helpdesk / Technician | Windows 10/11
📍 Williamtown, NSW
📅 12 Month Contract (Potential to Extend)
🔒 NV1 Clearance Required

Ready to put your tech skills to work... under wraps?

Join a globally respected private organisation supporting an Australian Government operation. This is your chance to work behind the scenes—literally—with a team that operates at SECRET and TOP SECRET clearance levels.

Why this role?

• Long-term career potential: Start on contract, with future opportunities for permanency.
• Security-cleared? You’re already in rare company—this role opens doors to future opportunities.
• Work on impactful projects with real-world importance.

What you’ll be doing

• Provide IT support and troubleshoot moderately complex delivery systems or network issues.
• Escalate and coordinate with vendors on hardware or networking problems.
• Assist with configuration management of basic computing delivery systems.
• Ensure documentation is kept up to date and aligned with policies and procedures.
• Respond to service desk tasks and support tickets in a timely, professional manner.
• Ensure IT operations meet industry standards and compliance requirements.

What we’re looking for

✔ 3+ years' experience in PC support, specifically Windows 10/11 environments
✔ Strong understanding of networked PCs and peripherals
✔ Excellent communication and troubleshooting skills
✔ Certificate-level IT qualifications (and ideally 4+ years' relevant experience)
✔ Ability to work independently, take initiative, and follow through
✔ NV1 clearance (Australian Citizens only)
✔ Willingness to travel to remote sites as needed, and occasionally work out-of-hours/on-call
✔ Valid driver’s license

Bonus points if you

• Have experience in secure environments
• Thrive in fast-paced, high-trust teams
• Love tech but also like keeping things hush-hush

🎯 Interested? Apply online or reach out to Steven at steven@theonset.com.au.

Top-secret tech support isn’t for everyone. But if you’ve got the clearance, we’ve got the opportunity.

#LI-AL1