Key skills
CloudDockerGraphQLJavaScriptNode.jsPostgresTypeScriptPostgreSQLOAuthRESTfulShopifyWooCommerceCDNCachingCI/CDCommunication
About this role
Role Overview
- Designing and building the backend architecture from scratch: API design, data modelling, service structure
- Authentication and security, including: multi-tenant access control and tenant isolation, API key management, secure asset delivery (signed URLs, CDN integration, access-controlled file serving for large 3D assets)
- Payments and licensing infrastructure, including: Stripe or headless commerce integration (Medusa.js, Saleor, or equivalent), subscription and per-asset licensing models, paywall boundary design (what’s free to preview vs. what requires purchase)
- CMS and admin tooling — interfaces for institutions to manage collections, branding, and deployments
- Infrastructure: CI/CD pipelines, containerisation, deployment, monitoring
- API layer — exposing clean, well-documented endpoints for the JavaScript frontend
- Evaluating and integrating marketplace platforms (Shopify, WooCommerce) or recommending headless alternatives where appropriate
- Co-shaping technical decisions with the CTO and contributing to product direction based on backend feasibility
Requirements
- Strong backend engineering in Node.js/TypeScript, or demonstrably fast adaptation from another modern stack
- API design
- RESTful at minimum, informed opinions on GraphQL tradeoffs
- Authentication and security
- OAuth flows, role-based access control, secure token management
- Database design
- PostgreSQL as foundation, sound judgement on when to reach for document stores or caching layers
- Payments integration experience
- local vendor experience (przelewy24, blik), legacy ticketing and reporting as a bonus
- DevOps fundamentals — CI/CD, containerisation (Docker), cloud infrastructure
- Experience building CMS-like tools, admin panels, or editor interfaces
- Fluent English (C1+) — working language of the team and all technical communication
- C1+ level of spoken and written Polish.
Tech Stack
- Cloud
- Docker
- GraphQL
- JavaScript
- Node.js
- Postgres
- TypeScript
Benefits
- Senior founding engineer role with direct influence over architecture and product direction
- Greenfield backend — no legacy code, no inherited technical debt
- Stack flexibility — Node/TS is the default assumption, but the backend stack is yours to propose and defend
- High autonomy: small founding team, clear ownership, short feedback loops
- Meaningful domain: museums, cultural heritage, spatial computing — not another dashboard