Rebuilding trust and a platform that scales

When deer joined Wunder Mobility, it wasn't just another migration. The team had been through difficult provider switches before, so this project was as much about rebuilding trust as it was about moving data.

The challenge was ambitious: a full migration in three months, alongside a long list of launch-critical features, including support for A-to-B bookings at scale. For Wunder Mobility, it was also a chance to prove the platform could handle not just free-floating models but the full operational complexity of large car-sharing fleets, with hundreds of stations and multiple booking types.

The result: a successful migration, a confident customer, and a foundation deer could keep growing on.

From manual chaos to smart automation

Before migrating, deer's operations team managed daily relocations and booking conflicts by hand: Excel spreadsheets and early-morning coordination sessions. Each day started with several people reviewing the previous night's bookings to track usage, pick which vehicles to move, and resolve outstanding conflicts.

With Wunder Mobility, those processes are fully automated through our A-to-B logic. The system now recognizes when vehicles move between stations, adjusts bookings accordingly, and prevents conflicts before they happen. deer can expand its network of stations and vehicles without adding headcount to manage the growth.

Smarter identity verification, powered by Onfido

Another step change was automating driver's-licence and ID checks. Previously deer reviewed every upload manually, confirmed validity, and cross-checked an internal blacklist. Through Wunder Mobility's partnership with Onfido, that now runs automatically and continuously. Most users are verified within seconds, even on weekends, and existing drivers are being re-verified for clean, structured data.

A new fraud-prevention mechanism blocks users who previously violated rules if they try to re-register with the same ID or licence. Together, these changes cut manual work, improved compliance, and laid a foundation for data-driven operations.

Milestones that mattered

From the product side, deer's journey was structured around clear, progressive milestones, each building on the one before:

  • Pilot & early deliveries: intensive testing to confirm the platform met deer’s scale and reliability needs; early feature delivery set the tone for collaboration.
  • Feature definition: both teams refined the full list of functionality required for launch and aligned priorities.
  • Delivery 1, core features: the critical foundations, including A-to-B booking support.
  • Testing phase 1: client testing validated the first release.
  • Delivery 2, launch blockers: the final launch-critical features.
  • Testing phase 2: focused testing rounds confirmed readiness for migration.
  • Migration & go-live: the culmination of three months of close teamwork: a smooth transition and a successful launch.

One smaller mobile feature was postponed for timing, but the launch delivered virtually the entire roadmap plus several incremental improvements.

A partnership that builds confidence

Beyond the technical work, one of the biggest wins was collaboration. Over three months and more than 50 joint sessions, the teams worked side by side, balancing speed, discovery, and trust. For deer, the switch meant a new way of operating: full control over the mobile app, the flexibility to customize it, and ownership of operational accounts, from the app store to fleet-management tools.

Joint work with Invers addressed deer's focus on privacy and data protection. Together we implemented a Privacy Mode that lets operators decide how much trip data is visible to end users: transparency without compromising safety.

Scaling up: what comes next

At launch, deer put over 220 additional vehicles on the road: cars its previous system couldn't support. A flexible branch and sub-branch structure introduced new levels of control over user permissions, regional access, and fleet segmentation. What used to be a flat Excel list is now a dynamic system built for scale.

The journey continues: deer plans to add more stations, more vehicles, and new mobility modes. The team has already begun testing bicycles on the platform, its first step toward multimodality, and a fit with our vision of one platform managing cars, bikes, and more in a single ecosystem.

Key takeaways

  • Faster operations: manual Excel workflows replaced with real-time automation.
  • Smarter verification: automated ID checks through Onfido.
  • Collaborative delivery: a three-month migration, 50+ sessions, full feature scope.
  • Scalable architecture: 220+ new vehicles supported at launch.
  • Future-ready: expanding to multimodal fleets on Wunder Mobility's unified platform.

deer's success is a reminder that scalable technology starts with shared trust. Together, we turned migration into momentum.