Senior Fullstack Developer 🌍 (Node.js + React)

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 🚀