In today's tech landscape, seamless integration is key to successful software implementation. At Leyr, Senior Developer Sebastian Olenski has been leading an innovative project to transform how clients can connect with our API. In this mini-interview, Sebastian shares insights into the development of Leyr's new API adapter - a solution designed to dramatically simplify client integration by shifting the technical burden from customers to Leyr's own team. Sebastian explains how this approach not only streamlines onboarding for new clients but also provides valuable insights that help refine Leyr's API offerings.

You've been working on an building an adapter to Leyr’s API recently. Could you walk us through what problem this solves and what makes this implementation particularly interesting from a technical perspective?

The idea behind building the Leyr Adapter was to offload the integration effort from our clients and shift that responsibility to us at Leyr. No one understands our API better than we do, so we developed a solution that flexibly adapts the client’s API to Leyr’s, while being deployable independently of the client’s release cycle. This allowed us to work in parallel with the client’s own development and test the integration with minimal involvement from their side—all while providing full telemetry and adhering to authentication protocols.

What made this project particularly interesting was learning how to work around limitations introduced by the client’s API and tailoring our adapter’s internal design to accommodate those constraints. It also gave us the opportunity to build a solid foundation for future API adaptation efforts and explore how we can further reduce integration complexity for future clients—ultimately enabling much faster onboarding.

What excites you most about this adapter project? How do you see it improving our system's capabilities or efficiency?

What excites me most is that this project gave us the chance to see the integration process from the client’s perspective. That helped us identify some blind spots and limitations in our current approach and improve on them. As a result, we’ve been able to adjust our API based on real-world feedback we encountered while building the adapter.

I'm excited to continue exploring similar use cases and evolve the API to better meet actual client needs. This makes the Leyr API an even more powerful and relevant solution to the real integration challenges clients face.

What have been some of the key technical or architectural insights you've gained while working on this project? Were there any surprising challenges or learning moments?

The architecture had to be designed to adapt flexibly to both the client’s API and Leyr’s API. That requirement led us to implement solid abstraction layers that could be swapped out easily and reused for each new client. We also had to decouple our EMR-specific endpoints to ensure the adapter could work smoothly even as clients added new EHR credentials on their end. That meant the adapter needed to scale gracefully and support multiple systems while preserving a consistent integration flow.

Overall, I think we did a great job, as there weren’t too many major roadblocks. One interesting challenge, though, was ensuring we could consistently identify and locate a given patient across all EHR systems listed in our developer portal. That forced us to think more deeply about data integrity and how to merge patient data from different EHRs—especially when a patient was missing in one system but present in others. Definitely a fun and rewarding challenge!

Amazing, thank you Sebastian for sharing your knowledge and insights with us!

Sebastian's work on the API adapter represents Leyr's commitment to making integration as seamless as possible for our clients. If you're currently facing integration challenges or wondering how this new adapter could benefit your organization, we'd love to hear from you.

Connect with us at contact@leyr.io or book a strategy call directly.