Senior Full-Stack Engineer (TypeScript / Vue / SaaS)

Senior Full-stack Engineer Our client is building a modern B2B SaaS platform that enables businesses to launch and scale subscription-based models for physical and digital products. The product sits at the intersection of e-commerce, payments, and developer tooling, with a strong focus on extensibility and developer experience. The team is lean, senior, and highly experienced, backed by strong investors and industry advisors. They operate with high autonomy, fast execution, and strong ownership culture. Role We are looking for a Senior Full-stack Engineer to help shape the next evolution of the platform. You will work across architecture, product, and infrastructure, focusing on scalability, reliability, and developer experience. This is a high-impact role where you will influence both technical direction and product decisions. Responsibilities • Build and evolve a scalable SaaS platform • Design and deliver new features end-to-end • Improve performance, reliability, and system architecture • Collaborate with product, design, and growth teams Requirements • 7+ years of engineering experience in complex systems • Strong architectural and system design skills • Ability to choose appropriate technologies per problem • Experience working in cross-functional teams • Strong communication in Polish and English • Startup mindset: ownership, speed, adaptability • Experience with e-commerce platforms is a plus Offer • High-impact role in a senior engineering team with real product ownership and influence. • Competitive salary plus ESOP, fully remote work (Poland), regular team offsites, and modern tooling including MacBook Pro and AI credits. • Direct access to founders, investors, and advisors.