Brandon Stiles — Engineer & Product Demo Specialist

🔐

Authentication Redesign

Talkiatry

Designed and built a full passwordless authentication system—including magic links and OTP—using AWS Cognito, Lambda, and PostgreSQL, delivering secure, seamless login for 500k+ patients.

AWS Cognito Lambda PostgreSQL React TypeScript SQS

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Patient–Provider Messaging Platform

Talkiatry

Enabled HIPAA‑compliant patient–clinician messaging; led discovery with PM/Informatics, demoed workflows, and shipped with Lambdas + queues.

AWS Lambda SQS EHR APIs React Node.js PostgreSQL

🤖

Agentic LLM Harness for Financial Workflows

Sema4

Built core features of the agent‑server harness powering our agentic LLM platform: an execution loop that calls LLMs, tools, and MCP servers, then carries out the work inside isolated Firecracker microVMs with Git‑like versioning over a virtual filesystem — giving financial‑services users full auditability into every automated action.

FastAPI Firecracker microVMs MCP LLM Orchestration Python Agent Harness

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Partner Enablement System

Greenlight

Improved partner onboarding and analytics with Segment + Datadog; collaborated with Sales/Marketing to surface metrics and reduce time‑to‑value.

Node.js MongoDB Segment Datadog Docker Kubernetes

About Me

I'm a software engineer who thrives at the intersection of technology and communication. With 6 years of experience building scalable backend systems across healthtech and fintech, I've most recently done harness engineering for agentic LLM systems — building the execution loop that lets LLMs call tools, MCP servers, and enterprise data sources, then carry out real work inside isolated microVM sandboxes with Git-like auditability. I've led engineering initiatives that launched high-impact features used by millions.

What sets me apart is my ability to present live demos to stakeholders, translate complex technical concepts for cross-functional teams, and drive alignment that accelerates product adoption. I love roles that blend technical expertise with business impact.

I thrive in customer conversations—discovery, demos, and proofs‑of‑concept that build understanding and trust—while staying hands‑on with engineering.

When I'm not coding or demoing, you'll find me in Atlanta with my partner Savannah, exploring new places, new restaurants, and probably debating the best way to optimize something completely unnecessary.