AC

Built by Alberto Cortes Lefranc

Software & AI Engineer

Bellevue, WA

The Story

In January 2026, I was laid off from Amazon after almost 2 years as a Software Development Engineer. I had built distributed systems at scale, led cross-team initiatives, and earned top performance ratings. But none of that mattered when the layoff email arrived.

The layoff hit hard, but it also sparked an idea. Every time I applied for a job, I wished recruiters could just talk to my experience directly instead of scanning a 2-page PDF. What if my resume could actually answer questions?

That's how iku was born. I wanted to build a platform where any professional could upload their CV and instantly get a personal AI assistant that knows their career inside-out. No code, no setup complexity, just a shareable link.

I built the entire platform from scratch in 4 days: a serverless backend on AWS with 8 CDK stacks and ~195 resources, a Next.js frontend, RAG-powered chat with Bedrock and Pinecone, auth, analytics, document processing, and everything in between.

iku is also my portfolio. Every architectural decision, every line of code, every deployment pipeline represents what I can bring to your team. This page is my way of showing, not just telling.

The Architecture

8 CDK Stacks · ~195 AWS Resources

API Gateway

REST API with 21 endpoints, Cognito authorizer, request validation, and CORS configuration.

Lambda Functions

7 Python handlers: auth, chat, documents, billing, indexing worker, scheduler, and user management.

DynamoDB

4 tables with GSIs for users, documents, chat sessions, and rate limiting. On-demand capacity.

Bedrock + Pinecone

RAG pipeline using Knowledge Bases, Titan embeddings (1024d), and Claude 3.5 Haiku for generation.

S3 + CloudFront

3 buckets for documents, photos, and frontend hosting. OAC-secured CloudFront distribution.

Cognito

User pool with email verification, password policies, and JWT-based authentication flow.

SQS + EventBridge

Event-driven document indexing via queues. Scheduled jobs for ingestion safety net and cleanup.

21
API Endpoints
8
CDK Stacks
~195
AWS Resources
7
Lambda Functions
4
Days to Build

Tech Stack

Next.js 14React 18TypeScriptTailwindCSSPython 3.12AWS CDK v2LambdaAPI GatewayDynamoDBS3CloudFrontCognitoBedrockPineconeSQSEventBridgeSESFramer MotionPydantic v2

Talk to my AI — Ask me anything

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