Selected work
Case Studies
Selected design and product leadership, alongside founder-built systems. These examples draw on Tarra’s leadership roles and Jeroen’s previous roles and own ventures, rather than commissioned Stravus client engagements. Tarra’s experience previews outline leadership scope and selected initiatives; fuller project details will follow.
Tarra van Amerongen / Experience previews
Design leadership across products and platforms.
Preliminary role-based examples, not full outcome case studies. The scope and initiatives below describe Tarra’s leadership responsibilities, not results attributed to Stravus.
Atlassian
Connecting the experience across apps.
Prior role · Head of Design for Navigation & Platform Experiences
Tarra led the design team for shared experiences that help people find, create, organise, resume, plan, track and report on work across Atlassian apps and collections. The role connected design managers with product, program and engineering leaders across a global matrix.
- Global navigation rollout and the evolution of common platform components.
- Embedding AI in design practice and developing AI-first experiences.
- A shared design vision for platform and app teams, alongside senior talent development.
Experience preview · Fuller project details will follow.
Atlassian
Shared foundations. Flexible product experiences.
Prior role · Head of Design for Jira Platform and System of Work
Across five domains supporting the Jira product family, Tarra led embedded product and content designers, research and design managers in Australia and India. The scope brought shared platform experiences together with the needs of individual products, administrators and end users.
- Frameworks for defining platform flexibility and design ratios across the wider design organisation.
- Federating platform experiences across the Jira family.
- Cloud-first features that support administrators and end users in moving work forward.
Experience preview · Fuller project details will follow.
Thoughtworks
Bringing AI into concept and delivery.
Prior role · VP of Product & Design, APAC
Tarra led the Product & Design practice across China, Thailand, Australia and Singapore, and developed AI-first opportunities in Vietnam. Her remit connected rapid concept exploration with strategic delivery programmes.
- Rolling out rapid AI-first concept development and prototyping through the “333 methodology” across APAC.
- Pivoting strategic programmes to use AI Works, Thoughtworks’ AI-first development platform.
Experience preview · Fuller project details will follow.
Xero
Designing across a connected portfolio.
Leadership scope · EGM / Senior VP of Design
Tarra’s design leadership scope spans the Small Business, Accountants & Bookkeepers and Tax portfolio, covering core web and native products. It includes regional design leadership in the Southern Hemisphere and strategy with global product leaders.
- User experience and interaction design across the core product portfolio.
- Systems, processes and structures that support designers in creating customer experiences in the AI era.
- Connecting design practice with global product strategy.
Experience preview · Fuller project details will follow.
01 / Stake
A new asset class. A connected customer experience.
Prior role · Principal Product Manager, Crypto · 2021–2022
The challenge
Adding crypto to an established equities proposition raises questions beyond the new asset itself. Customers need a recognisable experience across products, while different asset classes bring different characteristics.
Role and work
As Principal Product Manager for Crypto, Jeroen led strategy for adding cryptocurrency alongside Stake’s Australian and US equities offerings. His remit connected the proposed product with the wider customer experience and platform.
A central part of that strategy was defining what should be shared and what should remain asset-specific, including customer experience, platform capabilities and terminology: preserving a consistent brand while making room for the differences that mattered.
Why it matters
Product strategy needs to address the whole experience: where to reuse, where to differentiate and how the parts fit together. This case illustrates that work through strategy and capability definition.
Back to selected work02 / Capital Wallet
Connecting product direction with business operations.
Prior role · Product Owner / Interim CEO · 2024
The challenge
A payments business depends on more than the transaction customers see. Settlement, treasury and reporting sit behind that experience, alongside the commercial, technical and compliance work required to operate it.
Role and work
At Capital Wallet, Jeroen combined product ownership with interim CEO responsibilities across APAC and Europe. The roadmap spanned payments, settlement, treasury and reporting.
He coordinated across commercial, engineering, compliance and operations, connecting product direction with the business that had to deliver and support it.
Why it matters
This experience brings product and executive perspectives to the dependencies that growth creates across teams, systems and markets.
Back to selected work03 / Alpha-1
Building an AI-led system, beyond a single assistant.
Own venture · AI-agent system design and development
The challenge
Using AI for an individual answer is different from building a system around it. An AI-led workflow needs distinct responsibilities, coordination between specialists and clear boundaries for human judgment.
Role and work
Jeroen founded Alpha-1 to apply AI agents to options research and trading workflows. The project provides hands-on experience of building and working with specialist agents in a real decision-making context.
It explores how autonomous AI-led systems can be organised around a purpose, rather than relying on one general-purpose assistant. Agent coordination, oversight and the division of responsibility between people and software are central to the work.
Why it matters
Alpha-1 grounds Jeroen’s AI experience in practical system building and operational learning. Its relevance here is the design of coordinated, AI-led ways of working, not investment results.
An own-venture example of system design and research support, not a client engagement or investment advice.
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