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.

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01 · About

Full-stack developer, from schema to pixels.

What I do

Product engineering across the whole stack.

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.

Stack

Tools I reach for first.

TypeScript end to end, with a boring, proven stack underneath. Full list on the tech stack page.

TypeScriptReactNext.jsNode.jsPostgreSQLAWS
Full tech stack
Experience

8+ years, from enterprise to startups.

Production software for E.ON, ING (via HCL) and Warner Bros., plus US startups and my own products.

Full timeline
Contact

Hire a full-stack developer for contract work.

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
Get in touch
02 · Projects

Portfolio: selected projects

All projects
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statusline-pro

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.

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justship.now

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.

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makers.page

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.

03 · Writing

Latest posts on Claude Code, MCP and AI agents

All posts
Claude Agent SDK: What It Is and How to Build Your First Agent (2026)Oct 2026The 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.Claude Code Hooks: Every Event, the Config Format and Five Working ExamplesOct 2026What 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.Claude Code Subagents: How They Work and How to Build Your Own (2026)Oct 2026What 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.

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.

Hire me