Lasse Hyldahl Jensen

As a Founding Engineer at Avido, I architected and built our AI evaluation platform from the ground up. This role is fundamentally about architecture and delivering reliable software in a highly regulated domain (banking). I lead architectural decisions across our stack, from our React/Next.js frontend to our Node.js (Hono) backend and the Azure Kubernetes infrastructure it all runs on.

I own the entire delivery cycle (“you build it – you own it”), managing infrastructure as code with Pulumi, GitOps with Flux, and CI/CD with GitHub Actions. Security and privacy by design are critical in our work with financial institutions, and I’ve ensured our platform meets these stringent requirements, including a SOC 2 pentest with zero findings.

My work also involves exploring emerging technologies and identifying how they can be integrated into our platform, such as building a conversational-AI engine with tool-calling via MCP and observability through the Grafana LGTM stack.

In early 2024, two colleagues and I started Lunar’s AI Colony. We launched a customer-facing assistant in April 2024 and built a full support system on top that resolves 85% of Lunar’s support cases today.

I also built Lunar’s internal GenAI platform, so other teams could reach LLMs through our APIs and build their own RAG pipelines on top. On the data side, I built a pipeline that synced data from our warehouse back into production using an event-driven architecture, enabling users to compare their spending with others in their cohort.

I built backend microservices in Go, mostly services that exposed APIs to Lunar’s app and internal tools through OpenAPI and GraphQL. This was my first experience with large-scale event-driven architectures and microservices.

As an intern I built an anti-corruption layer in front of one of Lunar’s partner integrations. API calls had been forwarded straight to the partner, which added latency and left little control over response times; the layer fixed that and let us move to event sourcing across the affected microservices. Those endpoints were hit every time one of Lunar’s million users opened the app, and we shipped changes to them continuously, sometimes several times a day.

Full-time, I took over Lunar’s card management system. It dated back to the 2019 banking licence and the rushed 2020 launch, so it carried real technical debt. I reworked the architecture that was holding back scalability and built an integration with Nets, Lunar’s card issuer, to keep the two systems in sync and reconcile any discrepancies automatically.

For my Bachelor’s project, I collaborated with IBM Denmark and Smukfest to develop the backend for Smukfest’s new mobile app. The backend was designed for scalability and maintainability, and it integrates various Content Management Systems (CMS) while enabling push notifications to all devices via Expo.

The app successfully launched for Smukfest 2023, supporting over 50,000 attendees, and was built to keep running even when parts of the backend failed.