Lead React Native Engineer

Permanent | Hybrid (Melbourne / Sydney) | Consulting

My client is building out a React Native capability from the ground up—and are looking for a Lead Engineer to define what “great” looks like.

This is not just another delivery role. You’ll set technical direction, influence clients, and establish React Native as a core offering across the business.

Why this role stands out

• Own the mobile direction
  Be the go-to React Native expert, shaping architecture and setting standards across multiple client engagements
• High-impact work
  From platform rewrites to greenfield builds and modernization—no maintenance treadmill
• Real consulting exposure
  Partner directly with clients, influence decisions, and drive outcomes (not just code delivery)
• AI + mobile innovation
  Help define how AI tooling integrates into mobile development workflows
• Variety over repetition
  Work across industries, teams, and technical challenges
• Strong engineering culture
  Collaborate with a high-performing group of mobile specialists

Working model

Flexible hybrid depending on client needs
No mandated office days — just a monthly team catch-up / town hall

What will make you stand out? 

• Proven experience leading React Native architecture and delivery in complex environments
• Strong communicator who can translate technical decisions into clear business impact
• Comfortable in a consulting environment, working directly with stakeholders and influencing direction
• A pragmatic mindset — balancing best practices with real-world constraints
• Track record of innovative problem-solving that drives meaningful outcomes

Interested?

We’re scheduling interviews for the week commencing 30 March 2026, so lets chat!

Head of Engineering

This pioneering (B2B SaaS) Fintech is reshaping the way large enterprise customers build new products and services at speed. Based in the heart of Sydney, their mission is to simplify and enhance the experience for their clients and users.

The Role:

As Head of Engineering, you’ll work directly with the Founder and be responsible for scaling a platform that supports some of the biggest global names in Insurance. This role blends leadership, strategy, and technical expertise, positioning you as a key player in shaping both their product and technology roadmaps. Your key responsibility is to drive and deliver great products and services while scaling the platform for national expansion.

Key Responsibilities:

• Lead, Inspire, Elevate – Guide a team of exceptional engineers (software, QA, Cloud), fostering a culture of innovation, ownership, and collaboration.
• Own the Full Product Journey – From the spark of an idea to deployment, you’ll ensure our products are scalable, secure, and customer-centric.
• Strategic Partnership – Work hand-in-hand with Head of Product to align engineering efforts with our ambitious business objectives and user needs.
• Deliver at Speed & Scale – Keep us moving fast, while delivering high-quality solutions, all while keeping projects on time and within budget.
• Champion Innovation – Drive the adoption of cutting-edge tools and methodologies that push the limits of what our Java on AWS stack can do.
• Shape the Future – Provide strategic leadership that influences both the product and engineering direction of the company.

About You:

• You’ve led high-performing engineering teams and thrived in fast-paced, product-driven environments; ideally B2B SaaS.
• Your leadership style inspires, motivates, and cultivates high ownership across your teams.
• You can seamlessly translate complex technical challenges into product wins that align with business goals.
• You thrive at the intersection of technology and product, with a knack for balancing innovation and delivery.
• Experience in fintech or similarly disruptive industries is a bonus, but your passion for building game-changing products is what counts.

Why Us?

• Lead with Impact – Play a pivotal role in a fintech that’s making waves and transforming an industry.
• Shape the Future – Join a team where your ideas matter and your leadership defines the future of our products.
• Innovate at Scale – Work with modern technology, constantly pushing the boundaries with Java, React and AWS
• Growth and Challenge – Enjoy the rewards of a competitive package, professional growth, and the excitement of being part of a high-growth business.

If you are interested in a confidential chat, reach out to sean.mitchell@theonset.com.au

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.

The world’s biggest breakthroughs rarely fail in theory, they fail in execution.

A process works beautifully in the lab, then collapses under real-world constraints.
A technology clears every technical hurdle, then stalls at pilot because no one owns delivery.
A promising system exists, but never quite makes the leap to something you can actually build, install, and run.

This team exists to close that gap.

They operate where science meets engineering reality — taking first-of-a-kind technologies out of the lab and into pilot plants, demonstration facilities, and ultimately commercial scale.

Right now, they’re looking for a Senior Process Engineer who can own that complexity end-to-end

What you'll be doing 
This is not a “sit behind the model” role.
You’ll take ownership of pilot plant delivery — translating experimental results into something that can be designed, built, installed, commissioned, and operated safely.
You’ll work alongside scientists, simulation specialists, fabricators, vendors, and commissioning crews — and you’ll be accountable for making the system work in the real world.

In this role, you will:

• Own the delivery of pilot-scale systems, from early design through to installation and commissioning.
• Translate lab and experimental outcomes into practical, buildable process designs.
• Lead first-of-a-kind process design, embedding scale-up, operability, and safety considerations from day one.
• Prepare and review engineering deliverables including BFDs, PFDs, P&IDs, equipment lists, and preliminary layouts.
• Develop and iterate mass and energy balances, equipment sizing, and process assumptions as data evolves.
• Perform techno-economic assessments to inform design choices and commercial decisions.
• Lead procurement of process and mechanical equipment, working directly with local and international vendors.
• Act as the on-site technical owner during fabrication, installation, commissioning, and troubleshooting.
• Identify technical, commercial, and safety risks early — and actively manage them through delivery.
• Communicate clearly with internal leaders and external stakeholders when trade-offs are required.

What we’re looking for

This role suits someone who has been through pilot delivery before, and understands where theory breaks down.

You’ll be a strong fit if you have:

• A degree in Chemical Engineering
• Hands-on experience delivering pilot plants or demonstration-scale systems — not just contributing to them.
• The ability to move comfortably between modelling, design, site work, and commissioning.
• Experience working with hazardous or corrosive systems, with a strong safety-by-design mindset.
• Sound judgement when data is incomplete and timelines are non-negotiable.
• A track record of owning outcomes, not just producing analyses.
• Clear communication skills — especially when explaining uncertainty, risk, and trade-offs.
  

The Ideal Background

• There’s no single “perfect” background for this role. Strong candidates typically have experience working outside the lab, delivering pilot or demonstration-scale systems in real operating environments.
• You’re likely to have worked with corrosive or hazardous processes, early-stage or first-of-a-kind technologies, and systems where data was incomplete and design assumptions were tested in the field.
• Your experience may come from chemical manufacturing, hydrometallurgy, mineral or metals processing, energy-adjacent technologies, or pilot plant operations. Specific commodity experience is less important than the ability to own delivery, balance safety and operability, and make sound engineering decisions under pressure.
• If you’ve been responsible for getting a pilot plant built, commissioned, and running — not just designed — you’re probably a strong fit.

Why this role is different

You won’t be handed a perfectly defined problem.
You won’t have the luxury of infinite data.
And you won’t be shielded from accountability.

But you will see your work move from concept to something physical, operating, and real — and you’ll know you played a critical role in getting it there.

If you’re motivated by ownership, execution, and seeing complex systems come to life outside the lab, this role will stretch you in the right ways.

Interested?
Reach out to Thaís Amorim at thais@theonset.com.au for a confidential conversation.

Senior Scientific Software Engineer, 3D Geometry and Visualisation
Sydney | Full time | Hybrid

The Mission
A global medical technology team designs complex physical products that must fit real human anatomy across massive population diversity. This role exists to turn large scale 3D scan data into practical digital tools that engineers actually use.

You are not building a generic platform. You are building internal software that directly shapes how physical products are designed, sized, and validated.

This is where scientific software meets real-world hardware outcomes.

What You’ll Work On
• Owning and evolving an internal digital anthropometry platform used by engineering teams
• Building cross platform desktop applications using Qt for Python
• Developing interactive 3D visualisation tooling with VTK for shape and fit analysis
• Working hands on with meshes, point clouds, geometry, and population level variation
• Implementing backend algorithms and data processing pipelines that support design decisions
• Translating messy engineering workflows into usable, repeatable software tools
• Driving adoption of digital first workflows across multidisciplinary product teams
• Improving architecture, testing, CI/CD, and long term maintainability without over-engineering

What Matters Here
• Strong experience building software for scientific, engineering, or R&D environments
• Deep comfort working with 3D data, meshes, geometry, and visualisation
• Solid Python engineering fundamentals
• Hands on experience with Qt for Python and VTK or equivalent frameworks
• Enough mathematical and statistical grounding to reason about shape variation and populations
• Ability to work directly with engineers, gather requirements, and influence how tools get used

The Type of Engineer Who Thrives
A scientific programmer who likes owning real tools, not abstract platforms. Someone who enjoys working with geometry, visual data, and physical constraints. Comfortable operating as the only dedicated software engineer in a domain heavy team, and confident enough to challenge workflows when the software can do better.

Not a web generalist. Not a ticket taker. Someone who wants their code to shape real products.

Why This Role Matters
Physical product development is slow and expensive when driven by trial and error. Better digital tools reduce iterations, improve upfront decisions, and raise the quality bar across every product cycle. This role directly influences how efficiently and accurately products are designed.

The "What's In It For Me" Bit
• Senior individual contributor role with clear technical ownership
• Long-term platform work, not short-lived features
• High autonomy and direct access to a varied class of engineering stakeholders
• Exposure to applied 3D geometry, anthropometrics, and medical R&D

If you want to build software where geometry, data, and real world fit actually matter, reach out.

Lead Delivery Manager - Sydney | Hybrid

We’re partnering with a growing technology business looking to hire a Lead Delivery Manager to elevate delivery across the organisation.

This is not a standard Delivery Manager role.

You’ll operate at a senior level — leading programs, influencing delivery leaders, and driving how delivery is executed across teams.

What you’ll do

• Oversee complex, multi-stream programs across enterprise clients
• Lead and influence Delivery Managers and cross-functional teams
• Drive consistency, structure, and high standards across delivery
• Own delivery outcomes end-to-end — including commercial performance
• Work closely with senior stakeholders to align delivery with business outcomes
• Identify and improve inefficiencies across teams

What we’re looking for

• Proven experience leading large, complex delivery environments
• Experience managing or mentoring Delivery Managers
• Strong commercial acumen (budget, forecasting, trade-offs)
• Ability to lead without authority and drive performance across teams
• Confident working with senior stakeholders and clients
• Track record of improving ways of working and lifting delivery standards

Why this role

• Influence how delivery is done — not just what is delivered
• Work at a leadership level across programs and teams
• Opportunity to lift capability and shape delivery maturity

This role suits a high-performing, commercially astute delivery leader ready to step beyond traditional program delivery.

Apply now or reach out for a confidential discussion.

Senior Business Analyst

Insurance Technology | Platform Delivery

Not every Business Analyst role is the same.

Some are internal change roles — improving a single system over several years.

Others sit closer to delivery — where requirements become working software, and where your analysis directly shapes how a platform behaves for real clients.

This role sits firmly in the second category.

We’re partnering with a specialist insurance technology provider that designs and implements core platforms used by insurers, underwriting agencies, and broker networks.

These platforms power the way insurance products are launched, configured, and operated — from policy administration to underwriting workflows, integrations, and reporting.

They’re now looking for a Senior Business Analyst who enjoys working close to delivery — someone who can translate complex insurance processes into clear requirements that delivery teams can actually build.

The opportunity

You will sit at the centre of delivery — working closely with Delivery Managers, Implementation Consultants, and engineers to shape how insurance platforms are implemented for clients.

This is not a documentation-heavy BA role sitting at a distance from delivery.

You’ll be directly involved in:

• Understanding how insurers operate and what they’re trying to achieve

• Translating those needs into clear, structured requirements

• Working with implementation teams to ensure solutions behave as expected

• Supporting testing and delivery through to go-live

Your work will directly influence how insurance products, underwriting rules, and workflows are implemented inside the platform.

You won’t be managing people.

You will be close to the work, influencing the solution.

Why this role appeals to strong BAs

Many experienced BAs reach a point where internal transformation programs begin to feel slow or repetitive.

This environment is different.

You’ll work across multiple implementations and client environments, solving different insurance problems rather than staying tied to a single internal system.

Delivery cycles are shorter.

Outcomes are visible.

And the work sits right at the intersection of business and technology.

You’ll be part of a delivery environment where good analysis genuinely improves how projects run — reducing ambiguity, enabling faster delivery, and helping teams build the right solutions the first time.

What you’ll be doing

You will be deeply involved in delivery:

• Running stakeholder discussions and clarifying business needs

• Translating requirements into user stories, functional specifications, and process flows

• Working closely with Implementation Consultants who configure the platform

• Bridging conversations between business stakeholders and technical teams

• Supporting Agile ceremonies including stand-ups, sprint planning, and backlog refinement

• Helping ensure solutions are tested properly and delivered successfully

You’ll spend less time writing documents for the sake of documentation — and more time ensuring solutions actually work for clients.

Who this role suits

This role tends to suit Business Analysts who:

• Have 5+ years of BA experience

• Have worked in commercial or general insurance environments

• Understand insurance processes, terminology, and stakeholder expectations

• Are comfortable operating in Agile delivery teams

• Have experience working in consulting-style environments or client-facing roles

• Are confident engaging directly with clients — running workshops, asking the right questions, and clarifying requirements

• Enjoy working closely with engineers, product teams, and delivery managers

• Prefer hands-on delivery work

It particularly resonates with BAs who have worked on:

• Insurance platforms or policy administration systems

• Product configuration or underwriting workflows

• System implementations or transformation programs

• Projects where they needed to work directly with clients or external stakeholders

Just as important is mindset.

You’re someone who:

• Asks the right questions

• Brings structure to ambiguous problems

• Is comfortable leading discussions with stakeholders

• Communicates clearly with both business and technical teams

• Takes pride in doing analysis properly and helping delivery teams succeed

A final note

This role isn’t designed for someone looking to step away from delivery into pure leadership.

It is a role for someone who enjoys being close to the work — shaping solutions, solving real problems, and seeing their analysis come to life in working systems.

If that sounds like you, it’s worth a closer look.

Most PHP roles talk about building features.
This one is about owning a system that already matters.

Somewhere inside a large organisation, there’s a platform quietly running the operations of thousands of properties. It schedules meetings, tracks work orders, and manages the flow of levy payments. It’s not flashy, but it’s critical - and it works at scale.

Under the hood sits a 750,000+ line PHP monolith.
Not something you rewrite. Something you understand, improve, and evolve carefully.

This team isn’t looking for someone to spin up landing pages or push out quick CRUD apps. They need engineers who:

• See complexity and lean into it
• Care about security, reliability, and long-term maintainability
• Can navigate and improve a large, interconnected codebase without breaking what matters

The stack is modern where it counts - PHP 8.3, MySQL 8 - with some legacy frontend in Knockout.js (useful, but not the focus). The real work is in the backend: performance, structure, and making the system better piece by piece.

There’s also a forward-looking element. The team is exploring how AI can be applied in meaningful, practical ways, so hands-on experience here isn’t a “nice to have” - it’s expected.

They’re bringing in 3 senior engineers on 12-month contracts to begin with. People who contribute, challenge ideas, and take pride in doing things properly.

The process is simple: two conversations, focused on how you think and how you work.

If you enjoy getting deep into real systems and leaving them better than you found them - it might be worth a conversation.

Reach out to reema@theonset.com.au for more details.

B2B Growth Marketing Lead

• Own growth from positioning to execution, optimisation and revenue impact
• Dynamic, high growth fintech
• $130k - $140k plus super and bonus

The Opportunity

This is not a 'set the strategy and step back' role. It’s for someone who likes to own growth end-to-end—from positioning through to execution, optimisation and revenue impact.

You’ll join a fast-scaling fintech operating in the payments space.  The business is in a high-growth phase, with strong product-market fit and clear runway.

If you’re commercially wired, data-led, and equally comfortable in a Figma file as you are in a pipeline review, you'll want to read on.

• Shape and refine the brand narrative, simplifying complex product features into compelling, high-converting messaging
• Design and execute growth campaigns across acquisition and existing customer expansion
• Lead the visual execution of sales and ABM assets (decks, landing pages, partner materials)
• Apply UX/UI principles across all marketing touchpoints to improve conversion
• Identify funnel friction and drop-off points; and fix them
• Define and track core growth KPIs, using data to scale, refine or kill initiatives
• Run competitor and voice-of-customer analysis to sharpen positioning and win rates
• Partner with Sales Ops to deliver coordinated ads, email and outbound programs
• Build and optimise a referral engine across partners and customers
• Support event strategy and execution, including messaging and collateral
• Drive expansion within existing accounts through insight-led programs

What You Bring

• 5+ years in B2B growth or product marketing, ideally in tech or long sales-cycle environments
• A track record of owning revenue or pipeline impact, not just campaign delivery
• Strong ABM experience, with evidence of influencing closed-won deals
• Ability to translate complexity into clear, visually compelling content
• Hands-on capability across execution - this is not a pure strategy role
• Deep understanding of funnel optimisation, conversion and ROI improvement
• Experience building scalable design systems/templates
• Strong grasp of UX/UI for marketing
• Comfortable operating in a start-up / scale-up environment

• Genuine ownership of growth, not just a slice of it
• A product with strong market relevance and emotional resonance
• High visibility and direct impact on commercial outcomes
• A business that values speed, clarity and execution over bureaucracy

If you’re looking for a role where you can see the direct commercial impact of your work and move fast doing it, apply online or call Michelle Rubinstein a The Onset on 0413463 043.

Data & Analytics Director

Build & Lead a High-Impact Data Function | High-Growth Consumer Scale-Up
Sydney or Melbourne | Hybrid (2 days in office)
$200k - $220k + Super + ESOP

Join one of Australia’s fastest-growing DTC scale-ups. Strong product-market fit, purpose-driven brand, loyal customers, and serious momentum. This is your chance to own how a business uses data to scale—across growth, marketing, operations, product, and customer.

Lead a modern, high-performing team of 6 across Analytics, Data Science, and Data/Analytics Engineering, turning data into a true competitive advantage.

The Role

• Own the entire data function: strategy, roadmap, and team
• Build, lead, and scale a multidisciplinary team, setting priorities, ways of working, and raising the bar on impact
• Partner with leadership across Growth, Marketing, Product, Operations, and Finance to answer critical business questions:

• • Where to invest for the next growth phase
  • How to optimise marketing, pricing, and customer lifecycle
  • How to improve operational efficiency and margin
  • How to embed data into every decision

What You’ll Be Doing

• Lead & scale the data function: Coach and mentor a high performing Data team - attracting exceptional talent, setting expectations & objectives, and managing performance & development
• Own data strategy & roadmap: align initiatives to key business priorities
• Drive impact across the business:

   

• • Growth & Marketing: performance, attribution, budget optimisation
  • Operations: efficiency, automation, cost optimisation
  • Product & Customer: lifecycle, retention, engagement
  • Finance: reporting, forecasting, commercial insights

• Build a data-led culture: improve accessibility, literacy, and self-serve capabilities
• Stay hands-on where it matters: SQL, data models, problem-solving, and scalable data foundations

What We’re Looking For

• Proven Data & Analytics leader (min 5+ years) of multidisciplinary data teams in high-growth, fast-paced environments
• Deep understanding of the end-to-end data lifecycle (ingestion → insight → impact)
• Track record of using data to drive commercial outcomes - particularly across Customer, Growth, Marketing, Ops, Finance Metrics
• Experience in consumer, subscription, DTC, eCommerce, or product-led businesses
• Operates at strategy and execution levels, with strong stakeholder influence
• Comfortable in ambiguity—brings structure, clarity, and direction
• Hands-on problem-solving with the team: SQL, data modeling, and modern data stacks (dbt, Snowflake, Looker, Omni etc.)

Interested? Apply now or message Ailbhe McDonagh Kelly on Linkedin if you’re keen to know more or email ailbhe@theonset.com.au