Building Software.
Accelerating What's Next.
AI consulting and engineering strategy
A technology holding and consulting firm specializing in AI systems, modern software ventures, and high-leverage engineering execution.
What We Do
Software
Oversight and development of software ventures, including our product studio OptionalSoftware.
Consulting
Engineering and AI strategy for teams that need clarity, acceleration, and senior-level leadership.
Incubation
Early-stage research and exploration of long-horizon software and AI opportunities.
Portfolio
OptionalSoftware
Our product studio focused on AI tooling and productivity systems, including Concurrent, the multi-LLM benchmarking and evaluation platform.
Consulting
Engineering & AI Consulting
Fractional leadership and scalable technical strategy across:
- • AI system design & model evaluation
- • Platform & distributed architecture
- • Event-driven system design
- • Engineering org design & leadership
- • Performance, reliability & scale
- • Product modernization strategy
Engagement Model
Engineering and AI advisory from a senior technical and organizational leadership perspective. Short, outcome-driven engagements. Fractional CTO/VP support available for select partners.
Get in Touch
For consulting or partnerships:
contact@castle.enterprises