Senior Full-Stack Engineer
Posted Updated
Description
This recruitment process is conducted on behalf of our client.
Own and ship full-stack features for a subscription platform used by e-commerce businesses. You'll work in a small team in Poland, close to product and the founders.
About the role A seed-stage B2B SaaS company is building subscription infrastructure for e-commerce: billing, checkout and developer tools. They need a full-stack engineer who owns features from idea to release. You'll work across frontend and backend, talk to designers and founders directly, and help shape the architecture as the product grows.
- Fluent Polish and residence in Poland.
- 5+ years of professional software engineering experience, mostly in product or SaaS companies, not only agencies or consulting.
- Strong TypeScript and Node.js in production, with features used by real customers.
- Production experience with React.
- Experience taking at least one customer-facing feature from requirements to release.
- Comfortable working from Figma designs.
- Able to work independently in an early-stage team without detailed specs.
Nice to have
- Next.js, or Vue and Nuxt.
- Fastify, Express or NestJS.
- Payments or subscriptions: recurring billing, payment providers, invoicing, proration, dunning.
- E-commerce: Shopify, WooCommerce, Magento or headless commerce.
- Public APIs, SDKs, webhooks or developer documentation.
- Startup experience, especially in teams under 200 people.
- Hands-on use of AI and LLM tools (Cursor, Copilot, Claude, OpenAI).