Fullstack Software Engineer (Frontend-Leaning) | Warsaw, Hybrid

About Our Client

Our Client is a well-funded, AI-first technology startup building products at the intersection of elite engineering and exceptional user experience. The company operates with a culture of radical autonomy, high ownership, direct feedback, and rapid execution.

Rather than traditional management structures, the team is built around trust, accountability, and highly capable individuals who take ownership of outcomes. Engineers are encouraged to move fast, leverage AI tools aggressively, and focus relentlessly on building great products.

•  Location: Warsaw, Poland (Hybrid)
•  Work Model: Full-Time
•  Work Authorization: Valid Work-Permit for Poland
•  Compensation: Competitive Package + Equity + Profit Sharing

The Opportunity

Our Client is looking for a Fullstack Software Engineer with a strong frontend and UI/UX focus to help build and scale product experiences used by customers every day.

This role combines product thinking, frontend craftsmanship, and the ability to independently deliver backend functionality when needed. You'll work closely with experienced builders in a fast-moving startup environment where decisions are made quickly and ownership is real.

What You'll Do

• Build exceptional user experiences using modern frontend technologies
• Develop and maintain product features across frontend and backend systems
• Design and implement scalable solutions using TypeScript, Node.js, and PostgreSQL
• Collaborate closely with product and engineering teams to rapidly ship features
• Contribute to architecture, technical decisions, and product direction
• Leverage AI-assisted development tools to improve speed and quality
• Own projects from concept through deployment and iteration

Technology Stack

• Frontend; TypeScript, SvelteKit, Tailwind CSS, DaisyUI, Playwright
• Backend; Node.js, Fastify ,PostgreSQL, Queues

Additional Technologies

• Python for AI/ML-related components
• DDD & CQRS principles where appropriate

Requirements

• Strong experience with TypeScript and modern frontend development
• Exceptional attention to UI/UX and product quality
• Ability to independently build and ship backend functionality
• Experience with Node.js and relational databases
• Strong communication skills and ability to operate with high autonomy
• Proven track record of delivering features in fast-paced environments
• Strong product mindset and engineering judgment

Preferred Qualifications

• Experience building products from 0 to 1
• Startup or founder experience
• Experience with SvelteKit
• Familiarity with Tailwind CSS, DaisyUI, and Playwright
• Experience with Python and AI-powered products
• Knowledge of DDD, CQRS, and event-driven architectures
• Open-source contributions or side projects demonstrating technical excellence

What We Offer

• Competitive compensation package
• Equity participation
• Profit-sharing opportunities for core team members
• Unlimited paid time off
• High levels of ownership and autonomy
• Direct collaboration with experienced founders and builders
• Fast learning environment with significant growth opportunities
• Opportunity to work on AI-first products at an early stage

If you're passionate about product development, user experience, and building ambitious technology alongside a team of exceptional engineers, we'd love to hear from you...