Roi Ezra

I've spent over a decade automating operations. The tools finally caught up.

I design and build the systems behind high-volume platforms - event-driven AWS architecture, LLM pipelines, and multi-agent automation that carries real work end to end. Equally at home setting technical direction or shipping the code myself.

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Lead Engineer, HSF · El Segundo, CA · Nov 2025 - Present

Building production AI systems that replace slow, manual operations - starting with an AWS Bedrock verification pipeline that turns document review from months into minutes, and a multi-agent engineering system that takes work from ticket intake through sandboxed execution to an opened pull request.

Alongside that, I own the high-volume communications platform that reaches scholars, donors, and stakeholders every day, and a custom board platform built to replace enterprise tooling with compliance, analytics, and agentic summarization in production.

About Me

I lead engineering teams and build systems that scale - high-volume platforms, real-time products, AI-driven automation, and the data pipelines underneath them. I have modernized legacy stacks, shipped critical infrastructure, and led the technical transitions that made growth possible.

I focus on shipping fast, keeping systems stable, and pointing engineering at what actually moves the business - whether that is automation, agentic workflows, or backend architecture.

Agentic systems

Agents that take real tickets, run in a sandbox, and open PRs - not demo chatbots.

Cloud architecture

Lambda, EventBridge, SQS, DynamoDB, RDS, ECS, Fargate. Terraform/OpenTofu when it needs to be repeatable.

Systems work

Split monoliths, define service boundaries, handle the failure modes people skip in the deck.

Leadership

Run the team, set direction, mentor people into stronger roles - without disappearing from the codebase.

Skills & Stack

What I work with day to day

AI & Agentic Systems

Multi-Agent Orchestration

AWS Bedrock

Model Context Protocol

OpenHands

Amazon AgentCore

Google ADK

LangGraph

LangChain

CrewAI

AutoGen

OpenAI Agents SDK

RAG

Prompt Engineering

Tool Use & Function Calling

LLM Evals

Langfuse

LangSmith

pgvector

Pinecone

Weaviate

OpenSearch

AI-Assisted Development

Languages & Frameworks

TypeScript

Node.js

Python

.NET Core

PHP

Java

Next.js

React

Laravel

Cloud & Infrastructure

AWS

Lambda

EventBridge

SQS

RDS

DynamoDB

ECS

EKS

Fargate

EC2

ElastiCache

CloudWatch

X-Ray

CloudFront

Azure

GCP

Terraform

OpenTofu

Serverless Framework

Docker

Kubernetes

Architecture & APIs

Event-Driven Architecture

Microservices

Serverless

REST

GraphQL

Domain Boundaries

Idempotency

System Design

Data & Messaging

PostgreSQL

MySQL

MongoDB

DynamoDB

Redis

Snowflake

Kafka

Kinesis

RabbitMQ

Security & Operations

OAuth 2.0

JWT

SSO/SAML

Multi-Factor Auth

IAM Least-Privilege

GitHub Actions

Grafana

Prometheus

ELK

FinOps

Get In Touch

Open to conversations about engineering leadership, agentic systems, and cloud architecture. LinkedIn is the fastest way to reach me.

Location

Los Angeles, CA

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