Senior Fullstack Engineer

Crossian is a high-growth technology-driven e-commerce business. As a start-up formed in 2020, we have created a fast-paced and dynamic environment, enabling our people to reach a cumulative average growth rate of over 1000% in the last 5 years.

We're forming an elite Fullstack squad that operates differently, working with AI-driven products. No "that's not my ticket" culture. Each engineer owns a feature end-to-end - from data model to UI pixel - and thinks like a Product Owner when scoping, like a Solutions Architect when designing, and like a craftsman when coding. 

If you want to work with people like that and become like them, this is the next step.

• Take a feature from kick-off to production: data model, API design, service layer, UI.
• Own reliability, performance, and observability of what you ship - not just the happy path.
• Turn product goals into concrete technical specs.

• Design full-stack architectures: databases, APIs, queues, caches, frontend rendering strategies.
• Apply patterns (Clean Architecture, Event - Driven, etc) where they fit the problem.
• Write design docs and lead technical discussions.

• Build well-tested APIs and microservices in Node.js, Go, or Python - whichever fits.
• Design and optimize relational and non-relational databases.
• Work with event streaming.

• Build fast, accessible, SEO-friendly storefronts with React / Next.js (SSR/CSR as appropriate).
• Optimize Core Web Vitals, bundle size, lazy loading, and CDN strategy (Cloudflare, AWS S3).
• Write maintainable state management (Redux, Zustand, Recoil).

• Write clean, tested, well-structured code; review teammates' code.
• Treat unit/integration/e2e testing and CI/CD as standard practice.
• Work with Product and Design to shape requirements, not just receive them.
• Support junior engineers