Senior Full-Stack Engineer - AI-First, Hybrid (Warsaw)

Eastern Peak; Województwo mazowieckie; Hybrid; PLN 250,000 - 400,000; Full time

Job summary

EASTERN PEAK in Warsaw seeks a Senior Full-Stack Engineer to lead feature development across Node.js backend and React frontend with an AI-first mindset. You will own features from design to production, collaborating with Product and Design, and working closely with the client’s engineering group in a hybrid team.

This role emphasizes strong TS/Node/React skills and ownership, plus experience with AI-assisted tools.

Qualifications

• 5+ years of hands-on software engineering experience in SaaS or product-driven companies.
• 3+ years of production experience across the full stack with TypeScript, Node.js, and React.
• Hands-on experience using AI-assisted development tools in daily workflow.
• Exceptional collaboration and communication skills with product, design, and engineers.
• Proven experience in distributed or hybrid teams across time zones.
• Fluent written and spoken English with clear communication.
• Based in Warsaw and able to work from the office 3 days per week.

Responsibilities

• Design, build, and ship product features end to end across the TypeScript stack (Node.js and React).
• Own features from technical design through development, testing, release, and production monitoring.
• Think like a product owner and balance user needs with technical tradeoffs.
• Collaborate with Product, Design, and Israel-based teammates to translate requirements into solutions.
• Contribute to architecture discussions, code reviews, and engineering best practices.
• Use Claude and agentic workflows to move faster and build AI automations.

Skills

Full-stack development

TypeScript

Node.js

React

AI-assisted development

Distributed teams

English communication

Tools

Claude AI

Playwright

Cypress

Selenium

Job description

EASTERN PEAK in Warsaw seeks a Senior Full-Stack Engineer to lead feature development across Node.js backend and React frontend with an AI-first mindset. You will own features from design to production, collaborating with Product and Design, and working closely with the client’s engineering group in a hybrid team.

This role emphasizes strong TS/Node/React skills and ownership, plus experience with AI-assisted tools.