Expert Full-Stack Engineer

Quick Facts

• Role: Expert Full-Stack Engineer
• Focus: Passwordless authentication platform using biometrics; end-to-end architecture and ownership

Description

Own and shape the critical architecture of a next-generation passwordless authentication platform. You’ll build across the full stack using TypeScript, Node.js, and React, tackling security and scaling challenges at real transaction scale. The role also emphasizes responsible use of AI tools to reduce boilerplate and improve engineering productivity.

Responsibilities

• Take end-to-end ownership of complex technical challenges across frontend and backend
• Build and evolve the platform architecture for passwordless authentication with biometric security
• Define and drive improvements to frontend and backend testing strategies and quality
• Apply AI tools across coding, testing, documentation, and team collaboration while evaluating outputs
• Make informed architectural decisions based on HTTP/REST and data storage needs

Requirements

• 8+ years of experience building digital products as a Fullstack Engineer or similar role
• Deep knowledge of TypeScript and JavaScript
• Extensive hands-on experience with Node.js and React
• Ability to work confidently across the stack and lead technical decisions
• Experience using AI tools effectively across coding, testing, documentation, and collaboration with critical evaluation
• In-depth understanding of SQL and NoSQL databases (data modeling, performance optimization, selection)
• Deep understanding of HTTP, REST APIs, and modern web communication patterns
• Extensive experience with frontend and backend testing approaches and tools
• Very good English and Polish communication skills

Benefits

• Real ownership and influence on the products you build
• Focus on business value over technical perfection
• Continuous feedback, open and honest communication, and mentoring
• Regular 1:1s and internal workshops/knowledge sharing
• Flexible working hours (start between 7:00–10:00)
• Hybrid model with regular in-studio collaboration (Gdańsk, Wrzeszcz)
• High-quality equipment (MacBook and testing devices)
• Individual training budget and English classes (small groups)
• Private medical care and MultiSport; team gatherings beyond work