SRF Dev | Principal AI Architect

Production-Grade AI Infrastructure That Clears Enterprise InfoSec.

Stop losing deals to security questionnaires and failing multi-agent loops. I bring 30 years of engineering leadership—including 15 years at MIT Lincoln Lab—to funded startups. Whether you need a Fractional Head of AI to lead your development team, or my zero-trust data perimeter (Phocion) to clear SOC2 audits, I get your product shipping safely.

A Career Built on Technical Excellence

MIT Lincoln Laboratory Applied R & D
Voice Automation, Inc. CTO / VP Engineering
Premiere Technologies NASDAQ IPO
FilingRamp AI Architecture

Triage & Advisory Engagements

High-impact, strictly scoped interventions designed for CTOs and VPs of Engineering who require immediate architectural clarity and unblocked delivery pipelines.

3-Day Architecture Risk Assessment

$4,500

A targeted deep-dive into your current AI stack. We evaluate your data pipeline, identify integration bottlenecks, and deliver a scalable, production-ready reference architecture to align your engineering efforts.

High Velocity

14-Day Phocion Integration Sprint

$15,000

Salvage stalled deployments. We debug orchestration layers, optimize prompt pipelines, resolve context-window limitations, and restore engineering velocity to get your agents to production.

Fractional AI Architect

$3,500 /mo

Ongoing architectural oversight. I act as an embedded technical backstop for your leadership—providing regular code reviews, vendor evaluations, and strategic alignment to ensure your AI initiatives succeed.

Enterprise Architecture

Production-grade reference systems demonstrating scalable enterprise patterns. These aren't prototypes; they are blueprints for security, observability, and deterministic AI execution.

Flagship Offering

Phocion

AI Proxy Gateway

A definitive reference architecture for securing enterprise AI. Phocion acts as a centralized proxy layer between your internal applications and external LLM providers (OpenAI, Anthropic). It enforces strict PII redaction, token-based rate limiting, granular cost attribution, and seamless multi-model routing to prevent vendor lock-in.

  • Zero-Trust PII Redaction
  • Multi-LLM Vendor Abstraction
  • Telemetry & Cost Observability
Request Gateway Blueprint

The AI Trilogy

Three fully functional applications, built from the ground up to demonstrate a clear progression of skill and value—from foundational RAG architecture to complex, goal-oriented AI agents.

Howie: Cloud-Native RAG

A production-grade, cloud-native RAG system built on GCP, demonstrating mastery of foundational AI architecture and deep-level debugging.

GCP Vertex AI FastAPI System Architecture

DocMail: Hybrid-Cloud Tuning

An advanced application showcasing mastery of the open-source stack, including fine-tuning a Llama 3 model for a specialized persona.

AWS RunPod Fine-Tuning Open Source

Interviewer: Stateful Agents

A goal-oriented AI agent built with LangGraph, demonstrating the ability to manage state, follow a plan, and execute multi-step workflows.

GCP LangGraph Agentic Workflows

What are your AI Challenges?

How do we de-risk a major AI investment and show a clear path to ROI?

Our engineering team is brilliant, but they lack the deep, specific experience to navigate the modern AI stack.

We need to cut through the hype and architect a solution that is reliable, scalable, and production-ready.

If these are the questions your leadership is asking, you've come to the right place. This is the intersection where I provide value.

A 30-Year Career in Applied AI & Language Tech

Steven R. Feinstein - Principal AI Architect

For over 30 years, my focus has been singular: transforming complex language technology from research concepts into market-ready products.

Today, as a Principal AI Architect, I leverage that experience to help senior technology leaders de-risk their AI initiatives—partnering with engineering teams to turn ambitious prototypes into reliable, scalable enterprise systems.

My journey began at the forefront of the commercial speech recognition industry, building core ASR/TTS systems for early speech startups. I joined Premiere Technologies pre-IPO, where my work on their core platform was featured in their successful NASDAQ offering. Later, as CTO and VP of Engineering for Voice Automation, I built and led the engineering team that architected complex voice-enabled enterprise integrations, resulting in our selection by Microsoft as an official launch partner for their Speech Server.

This intensive commercial experience was followed by a 15-year tenure at MIT Lincoln Laboratory. As a senior software engineer, I was responsible for productizing groundbreaking algorithms for mission-critical national security applications, ranging from advanced speech intelligence to Space Domain Awareness systems.

Now, as an independent consultant, I bring this rare combination of startup velocity, executive-level strategy, and research-grade rigor to my clients. I don't just build AI features; I architect the robust systems that become a core part of your business.

Steven R. Feinstein

Principal AI Architect

Architect Your Strategic Advantage

Let's discuss how my experience can de-risk your investment and accelerate your path to a production-ready solution.

Initiate Discovery

Schedule Briefing

A complimentary 30-minute technical evaluation