# Lucas Baker

> Independent solution architect and senior developer based in Tauranga, New Zealand. Thirty years across regulated sectors in the U.S. and New Zealand (finance, real estate, health, government services, and primary industries): legacy platform modernisation, dependable product engineering, cloud architecture on Azure and AWS, and applied AI using self-hosted and open-source models. New Zealand time is UTC+12 or UTC+13 during daylight saving. Email: lucas.baker@lucasbaker.com.

## Services

- [Legacy software modernisation](https://lucasbaker.com/services/legacy-software-modernisation): Incremental modernisation of long-lived software platforms, with the existing system kept running until the replacement has earned its place.
- [Software architecture review](https://lucasbaker.com/services/software-architecture-review): Evidence-led review producing a current-system map and documented position on the decisions the team needs to make.
- [Self-hosted and open-source AI systems](https://lucasbaker.com/services/self-hosted-ai): Applied AI using self-hosted and open-source models for organisations that cannot send their data elsewhere.

## Pages

- [Home](https://lucasbaker.com/): Positioning, capabilities, and service links.
- [About](https://lucasbaker.com/about): Career background and working principles (evidence before theory; architecture before implementation, never instead of it).
- [Work](https://lucasbaker.com/work): Three anonymised engagements described by capability and sector.
- [Contact](https://lucasbaker.com/contact): lucas.baker@lucasbaker.com. Replies within a working day. New Zealand time is UTC+12 or UTC+13 during daylight saving.

## Selected work

- [Multi-tenant clinical platform, replatformed in place](https://lucasbaker.com/work#clinical-platform): A fifteen-year-old .NET platform serving two hundred practice sites, migrated onto Azure one clinical workflow at a time. The first tenant cut over inside six months with no unplanned downtime, and the in-house team now runs the migration cadence.
- [Serverless telemetry fleet, made legible](https://lucasbaker.com/work#telemetry-fleet): An event-driven AWS estate of some forty Lambda services consolidated around a smaller set of platform services. Cold-start latency halved, and incident diagnosis moved from mornings to minutes.
- [External API platform and developer portal](https://lucasbaker.com/work#api-platform): Consumer authentication, an explicit versioning policy, and a developer portal treated as a product. The first external integration shipped within a quarter using only the documentation.

## Verified profile

- [LinkedIn](https://www.linkedin.com/in/lucasbaker/)