Intelligence, engineered
for acceleration.

AI architecture and agentic systems for organizations moving faster than their market, alongside products built in the spirit of effective acceleration.

Start a project

Architecture that carries language models out of the pilot stage and into the work your organization runs on.

Practice

Design and build work for production AI, plus products released under the Lastelle name.

Solutions architecture

Designs fitted to your data. Reference architectures for model selection, retrieval, orchestration, and evaluation, matched to your stack and your risk posture.

  • Model and vendor selection
  • Retrieval and memory design
  • Evaluation harnesses

Agentic systems

Agents that carry real work. Workflows of cooperating agents across Claude, OpenAI, and xAI, with human checkpoints placed where judgment matters.

  • Orchestration layers
  • Tool and data integration
  • Human review checkpoints

Products

Tools for people building the future. Software released under the Lastelle AI name to speed up the industries pushing technology forward.

  • Built in the open
  • Designed for self service
  • Released as they mature

Method

Every engagement ends in working software that you own outright.

  1. 01

    Survey

    A map of your data, systems, and constraints, and an agreed definition of what success will be measured against.

  2. 02

    Architect

    A reference design with the models, retrieval, orchestration, and controls chosen for your case.

  3. 03

    Build and hand over

    Working software in small, tested increments, delivered with documentation and evaluation harnesses so it keeps running on its own.

About

One builder, from the first call to production.

I'm Damien Rosecraft, an AI solutions architect working in technology since 2016, and I run Lastelle AI on my own. The person who scopes your system is the same person who designs it, writes it, and stands behind it once it is live.

My work divides between architecture for organizations putting language models, agents, and automated pipelines into live operations, and products I release myself to push the frontier a little faster.

FAQ

Questions that come up before a first call.

What kind of work does Lastelle AI take on?

Solutions architecture and agentic systems for organizations putting language models into live operations, plus products released under the Lastelle AI name.

Who does the work?

Damien Rosecraft, from the first call to production. Lastelle AI is a one person practice, so nothing is handed off to a team you never met.

Which models and platforms are supported?

Systems are built across Claude, OpenAI, and xAI, with the model chosen for each job rather than one vendor for everything.

What do I own at the end of an engagement?

The working software, its documentation, and the evaluation harnesses that measure it. Ownership is clear from the start.

Where do people stay in the loop?

Human checkpoints are placed wherever a decision needs judgment, and agents handle the rest.

How quickly will I hear back?

Within two business days, with a first read on scope and architecture.

Contact

Start a project.

Describe what you are building. Every inquiry gets a reply within two business days with a first read on scope and architecture.

annatar.ai@proton.me