Senior Fullstack Developer 🌍 (Node.js + React)

Senior Fullstack Developer 🌍 (Node.js + React) Where technology meets care Apply, let's talk! As Polish outsourcing company with Scandinavian roots, we particularly appraise values such as energy, logic and experience , this all comes in a Scandinavian work culture. Imagine building a product that helps hotels and venues worldwide sell smarter, manage availability in real time and reach thousands of distribution channels — all from one platform. At B3 Consulting Poland , we’re looking for Senior Fullstack Developers to join a product-driven team working on a global SaaS platform for the hospitality industry . The solution supports hotel room group bookings as well as physical meeting rooms and event venues , connecting supply with demand at massive scale. The ambition? 👉 Over 100,000 venues with live availability connected globally , making this platform the largest distribution network in the world . About the product: The platform consists of three core products used daily by hoteliers and venues: Venue & Sales Management Manage content, inventory, pricing, business rules and system integrations in one place. Internet Booking Engine White-label booking technology that can be embedded into customer websites using a no-code setup or APIs. Channel Manager & Global Distribution One interface to distribute inventory and control sales across 10,000+ connected channels worldwide. You’ll join a ~15-person product team focused on continuously building and evolving new features of the SaaS platform. Your role & responsibilities: Design, develop and implement new product features Enhance and maintain existing functionalities Work on a vendor-agnostic integration platform (initial focus more on backend development ) Build scalable and reliable services Write clean, maintainable code following best practices Take part in database design and architecture decisions Own your work together with the team — from idea to production Collaborate closely with other engineers, product owners and stakeholders There are small, autonomous teams , where responsibility and impact are shared. Tech stack: Frontend React; TypeScript; Redux; Tailwind Migration in progress to Next.js Backend Node.js; Nest.js; TypeScript Database PostgreSQL Infrastructure & tools AWS (for the cloud) GitHub; Slack; Notion; Linear (to manage daily work) Nice to have: Experience with modern productivity tools (e.g. GitHub Copilot, ChatGPT, Loom, Raycast/Alfred) Knowledge of PHP & MySQL (legacy parts, ongoing migration) Familiarity with Figma and collaboration with a design team Experience with Tailwind CSS and Storybook Understanding of online payments & billing (VCC, payment gateways) Experience with Adyen, Elavon or Stripe What we’re looking for: Experience as a Senior Fullstack Developer (5+ years) in product or SaaS environments Strong knowledge of TypeScript Solid backend experience with Node.js / Nest.js Good understanding of scalable architectures Confidence in database design Fluent English Product-oriented mindset and sense of ownership Ability to collaborate in cross-functional teams Apply today 🚀 Zespół Software Development & Digital Services Tryb pracy Zdalnie Warszawa