Sara Rossow
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HAWE | Nov 2023 - Nov 2024

Unifying HAWE's digital experience and crafting a design system

Design System
Design Process
Manufacturing
B2B

[ context ]

HAWE Hydraulik is a family-owned German company known for engineering precision in hydraulic components and systems. Its Customer Portal serves as a central hub. It powers up internal teams and customers alike with the tools they need to get things done.

goals

Achieve consistency and clarity across teams

As our digital products evolved, cracks started to show. With a commitment to quality and efficiency, HAWE aimed to unify its digital experience and streamline processes to minimize design debt and development costs. I led the initiative to bring that vision to life.

  • Establish visual and functional consistency

    Create shared UI components to unify the look, feel, and behavior across tools.

  • Streamline collaboration
    and development

    Bridge gaps between design and dev through a shared source of truth.

challenges

Scaling a platform without systems in place

Every tool had its own aesthetic and logic. Without a unified approach, we ended up with fragmented journeys, inconsistent visuals, and inefficient workflows. Outsourced design and dev made scaling a headache.

Screenshots of different tools with different UI patterns

What we were up against:

  • No
    code ownership

    Most of our front-end work was outsourced, which made iterating on designs slow and clunky. We couldn’t move fast.

  • Too many cooks in the kitchen

    Each tool was built by a different agency. That meant different UI patterns, no reusable components and a very patchy experience.

  • Documentation?
    Sort of...

    We had a design manual, but it wasn’t widely used. Some teams followed it, others didn’t know it existed.

  • Design team
    of one

    With limited resources, I juggled design, strategy, and stakeholder alignment. It pushed me to build a system all could rally around.

approach

One system to bring them together

I kicked things off with a cross-product audit. I talked to teams and gathered my suspects in an inventory: mismatched buttons, inconsistent patterns and interactions. This helped visualize just how fragmented our experience had become, and it gave me a clear place to start.

Screenshot of messy Header components and documentation defining the component
Based on the same documentation, different teams created different components. This was a great starting point to show the need for a design system.

Prototyping to build buy-in

Using Material UI as a base, I quickly mocked up clean, consistent interfaces. Stakeholders saw the value, and we shifted from debating theory of "nice-to-haves" to exploring solutions.

Before and after interface mockup
Prototyping helped to visualize the design system and its components. It was a great way to show the value of the system.

Starting small, scaling smart

We piloted the system on one product. I followed Atomic Design principles to build tokens, components, and patterns. Early dev feedback helped me refine things fast.

Design token definition in Figma
Design tokens were the first step in creating a design system. They helped us to define the visual language of the system.

From one designer to a shared language

With regular critiques, open Teams threads, and async walkthroughs I helped the system become collaborative. By creating visibility early and inviting others in, we turned a design system into a shared language.

Loom walk-through snippet
Quick Teams calls and Loom recordings were a great way to explain the design system, its components and implementations.

Joining forces

Initially a solo mission, I was later joined by a fellow designer. This collaboration sharpened decision-making, boosted component quality, and added momentum through regular design critiques.

Screenshot of brainstorming session
Brainstorming sessions with the team helped us to align on the design system requirements and its components.

design

Anatomy of a button

Designing components wasn’t just about looks. Dev teams needed clarity, and we needed consistency. To achieve that, I documented specs covering design, behavior, and best practices.

Screenshot of component documentation in Figma

Each component spec included:

  • Design
    tokens

    Colors, spacing, type, and other visual elements - all consistent, all reusable.

  • Interaction
    rules

    Hover states, focus behavior, animation timing - no guesswork.

  • Guidelines and
    edge cases

    Usage do’s and don’ts, accessibility guide, and examples.

  • Dev-ready
    snippets

    HTML/CSS snippets to make implementation smoother.

operations

Keeping it alive (and useful)

To expand adoption beyond our bubble, I built playbooks and wrote guidelines for contribution, versioning, and ongoing feedback. Our system quickly matured into a team-wide asset, saving hours otherwise spent on repeated work.

Version control to the rescue

Accidentaly pulling an update was causing chaos in prototypes. To solve this, I introduced a versioning practice inspired by front-end workflows. Designers could now test changes safely before "pushing to production".

Screenshots of change log page
Versioning was a great way to keep track of changes in the design system. It helped us to avoid breaking changes and to communicate updates to the team.

External critique for internal confidence

Before launch, we consulted with an external agency for a last review. Their fresh perspective helped sharpen accessibility and reinforced our vision and direction - turning a solid system into a robust one.

View of the design system tree

results

Looking back and in the future

What we achieved:

  • Design time cut by around 50%

    Reusable components sped up new feature creation and design iterations.

  • Consistency across 4+ products achieved

    No more guessing games for users. A single design language replaced fragmented visuals.

  • Increased developer and PM satisfaction

    Less back-and-forth, clearer specs, and a shared language made handoff smoother.

  • Shared
    ownership unlocked

    The system wasn’t mine anymore. Thanks to governance and maintenance guidelines the team was empowered to co-create.

What I learned:

  • The visible system isn't the whole system

    True success depends on governance, shared purpose, and evolving the system intentionally - not just creating components.

  • Shared vision unlocks real adoption

    Aligning design and engineering teams around the 'why' behind the system leads to stronger buy-in and lasting impact.

  • Governance and critique fuel growth

    Establishing a clear review process and philosophy of critique keeps the system healthy and adaptable over time.

What’s next:

  • Strengthen
    contribution models

    Making it even easier for devs and designers to co-create and expand the library.

  • Introduce design
    system KPIs

    Track and measure usage, adoption, and a feedback loop for continuous improvement.

  • Build a living system, not a frozen one

    Continue evolving the design system based on prioritized needs, team feedback, and user insights.

Reach out

Let's build something together

This wasn’t just a design system. It was about creating a shared foundation for better, faster, more delightful products. I started alone. By the end, we had a living system, a growing team, and a culture that valued UX.

If you're tackling messy systems and want a design partner who brings systems thinking, momentum and clarity to cross-team collaboration, let’s connect.

[ up next ]

HAWE - Elevating HAWE's UX maturity and fostering a user-centric culture

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