# Alex Cloudstar

> Senior full-stack developer. I build fast, careful web apps.

8+ years building SaaS with React, Next.js, TypeScript and Node.js, with production work for E.ON, ING and Warner Bros. Based in Romania. Available for freelance and contract work, including AI features with the Claude API and MCP servers.

Production work for: [E.ON](https://www.eon.com/), [ING (via HCL Technologies)](https://www.ing.com/), [Warner Bros.](https://www.warnerbros.com/)

## Full-stack developer, from schema to pixels.

### Product engineering across the whole stack.
What I do. React and Next.js frontends, Node.js and NestJS backends, PostgreSQL and AWS underneath. Plus AI features with the Claude API and the Vercel AI SDK. I also take short consulting work: JavaScript and Next.js architecture reviews and AI feature integration.

### Tools I reach for first.
Stack. TypeScript end to end, with a boring, proven stack underneath. Full list on the tech stack page.
TypeScript, React, Next.js, Node.js, PostgreSQL, AWS

### 8+ years, from enterprise to startups.
Experience. Production software for E.ON, ING (via HCL) and Warner Bros., plus US startups and my own products.

### Hire a full-stack developer for contract work.
Contact. React, Next.js, Node.js and AI features. Based in Romania, working with clients across Europe and the US. Open to contracts and full-time roles. Email me what you are building.
alexcloudstar@gmail.com

## Portfolio: selected projects
- [statusline-pro](https://alexcloudstar.com/projects/statusline-pro/) (Open source, 2026): A configurable status line for Claude Code. Model, context, rate limits, git and cost under the prompt, with per-segment settings and a drop-in folder for badges from other mods. Stack: TypeScript, Bun, Claude Code. Source: https://github.com/alexcloudstar/statusline-pro
- [justship.now](https://alexcloudstar.com/projects/justship/) (Live, 2026): A curated directory of tools for developers, indie hackers, and startup builders, paired with a build-in-public blog chronicling the founder's own shipping journey. Stack: Next.js, React, TypeScript, Tailwind CSS, Drizzle, Neon, Clerk, Resend, MDX, Vercel. Live: https://justship.now
- [makers.page](https://alexcloudstar.com/projects/makers-page/) (Paused, 2026): A launch platform where makers shared products and earned daily rankings. The site is paused, and the archive of past launches is still browsable. Stack: Next.js, React, TypeScript, Tailwind CSS, MCP, Vitest, Vercel. Live: https://makers.page
- [All projects](https://alexcloudstar.com/projects/)

## Latest posts on Claude Code, MCP and AI agents
- [Claude Agent SDK: What It Is and How to Build Your First Agent (2026)](https://alexcloudstar.com/blog/claude-agent-sdk-guide-2026/): The Claude Agent SDK is Claude Code as a library. What it is, how it differs from the Messages API and the claude CLI, how to install it, a minimal working agent in TypeScript and Python, and how tools, permissions, MCP servers, subagents and hooks work. (Oct 2026)
- [Claude Code Hooks: Every Event, the Config Format and Five Working Examples](https://alexcloudstar.com/blog/claude-code-hooks-guide-2026/): What Claude Code hooks are, every hook event and when it fires, where to configure them, how exit codes and JSON output work, and five copy-pasteable examples. Checked against the official docs in October 2026. (Oct 2026)
- [Claude Code Subagents: How They Work and How to Build Your Own (2026)](https://alexcloudstar.com/blog/claude-code-subagents-guide-2026/): What Claude Code subagents are, the built-in ones, how to write a custom subagent file, how Claude delegates and runs them in parallel, and when a skill, hook or MCP server is the better tool. (Oct 2026)
- [All posts](https://alexcloudstar.com/blog/)

## Hire a full-stack developer for your next product.
Available for contract work and senior full-time roles. Tell me what you are building and I will reply to every serious inquiry, usually within a day.

- [Contact](https://alexcloudstar.com/contact/)
- Email: alexcloudstar@gmail.com