Senior Frontend Engineer | React, Next.js & TypeScript | AI Automation

Senior frontend engineer with 7+ years in React, Next.js and TypeScript, currently leading frontend architecture for a regulated financial services platform. I also build production AI tooling: multi-agent systems and LLM integrations.

• Frontend Entwickler
• Graphql
• JavaScript4 J.
• Langchain
• Next.js
• Node.Js4 J.
• Python
• React (JavaScript library)4 J.
• Typescript4 J.
• WordPress

I am a full-stack engineer with more than 7 years of experience, working remotely for that entire time. My core is React, Next.js and TypeScript, and my recent focus has been production AI tooling.

What I do
• Frontend architecture for complex products: component patterns, state strategy, design systems and review standards that a whole team can follow.
• Next.js and SSR, with performance as a requirement rather than an afterthought.
• AI and automation: multi-agent systems with Python and LangGraph, integrations with the Anthropic and OpenAI APIs, RAG and tool calling.
• Test automation with Playwright, Cypress, Jest and Vitest.

Selected results
• Currently leading frontend architecture for a regulated financial services platform, where auditability and predictable code matter more than shipping fast.
• Cut production regressions by 50% with a Playwright and Cypress E2E suite, and reduced user input errors by 30% using React Hook Form and Zod.
• Built an AI code review assistant (Next.js, Anthropic API, GitHub Actions) that reduced manual review overhead by around 40% in a team of six.
• Built a 7-module multi-agent system in Python and LangGraph that discovers, scores and generates content across six platforms, with durable state in PostgreSQL.
• Improved render performance by 40% through Next.js SSR optimisation on a platform serving thousands of international users.
• Delivered a multi-tenant ERP dashboard consolidating five internal systems, cutting reporting time by 35%.
• Open-sourced a real-time finance dashboard (React, WebSockets, Azure) that has over 180 GitHub stars.

How I work
Asynchronous and documented. I am used to implementing against an architecture that is already defined, asking the questions that matter before starting rather than halfway through, and saying clearly when something is outside my experience instead of finding out later at the client's expense.

I use Claude Code and Cursor daily as part of my workflow, and I wrote the criteria my team uses for accepting, editing or rejecting AI-generated output.

Education
M.Sc. Artificial Intelligence, GISMA University Berlin (in progress)
M.Sc. Cybersecurity, Universidad Tecnologica Israel
B.Sc. Software Engineering, Universidad Tecnologica Israel

Languages
English (C1) and Spanish (native). I work in either.

React · Next.js · TypeScript · JavaScript (ES6+) · Tailwind CSS · HTML5 · CSS3
Redux · Zustand · React Hook Form · Zod · GraphQL · REST APIs · WebSockets
Server-Side Rendering · Web Performance · Responsive Design · Web Accessibility · Design Systems
Node.js · Python · Microservices · PostgreSQL · MySQL · MongoDB
LangChain · LangGraph · Multi-Agent Systems · Anthropic API · OpenAI API · Tool Calling · RAG · Prompt Engineering
Playwright · Cypress · Jest · Vitest · Test Automation · Browser Automation
Docker · CI/CD · GitHub Actions · Microsoft Azure · Code Review
WordPress · WooCommerce · PHP