THE BIG PICTURE

Find your next focus.

Build depth in one topic, then connect it to the rest of your stack.

Languages

JavaScript & TypeScript

Scope, closures, async behavior, object identity, and the type system.

Languages

Backend

Node.js, Express & HTTP

Trace requests, understand the runtime, and build reliable APIs.

Backend

NestJS

Dependency injection, request lifecycle, validation, and database integration.

Backend

Databases

MongoDB & Mongoose

Document modeling, aggregation, indexes, and consistency.

Databases

SQL & PostgreSQL

Joins, window functions, transactions, and query optimization.

Databases

Frontend

React & Next.js

Rendering, hooks, state ownership, performance, and server boundaries.

Frontend

Architecture

System design

Architecture decisions, distributed systems, and ten design scenarios.

Architecture

Deterministic AI Workflows

Design reliable AI-assisted workflows with explicit rules, validated state, safe actions, and reproducible tests.

Architecture

Production

Performance & security

Investigate production incidents and protect application boundaries.

Production

Testing & delivery

Testing, Git, containers, CI/CD, and cloud fundamentals.

Production

Interview craft

Interview skills

Prepare clear, honest answers and build independent technical judgment.

Interview craft

Project deep dives

Explain ownership, trade-offs, failure handling, and real project outcomes.

Interview craft

Practice

AI code review

Evaluate generated code for correctness, security, and reliability.

Practice

Mock interview questions

Rehearse coding and behavioral answers, then follow the technical mock rounds.

Practice

AI Engineering

Learn LLMs, RAG, agents, secure tools, and production AI through practical insurance examples.

AI Engineering

MCP Server with TypeScript

Build, secure, test, deploy, and explain Model Context Protocol servers using TypeScript.

AI Engineering

Data Structures & Algorithms

DSA fundamentals

Core data structures, algorithms, patterns, complexity, and interview practice.

Data Structures & Algorithms

DSA with Java

Implement interview patterns with Java collections and clean code.

Data Structures & Algorithms

DSA with JavaScript

Implement interview patterns with JavaScript arrays, maps, sets, and classes.

Data Structures & Algorithms

DSA with C# / .NET

Implement interview patterns with C# collections and .NET APIs.

Data Structures & Algorithms

DSA with Python

Implement interview patterns with Python's concise built-in collections.

Data Structures & Algorithms