Senior Fullstack Engineer

Barcelona CT, Spain View on map
CDI

· Remote

I am interested

Job description

 How you'll have impact

Architect a New Suite: You will be pivotal in building a brand-new product suite that spans multiple internal products and companies, tackling challenges in scalability, reusability (Monorepo), and multi-tenancy.

Own the Full Vertical: You won’t just hand off APIs. You’ll design resilient backend services (Node.js/Kotlin) and consume them in rich, AI-native UIs (Next.js/React).

Build AI-Native Experiences: From backend agents using LangChain to streaming generative UIs with the Vercel AI SDK, you will bring AI into the core of the user experience.

Drive Engineering Excellence: Your input on architecture is expected. You’ll champion Domain-Driven Design (DDD), clean code, and performance optimization across the entire stack.

 

What you'll do

Ship end-to-end features using TypeScript (Node.js/Next.js), while maintaining or integrating with services in Kotlin/Java. Craft modern frontends with React, Tailwind, and Vercel AI SDK, managing complex state with TanStack Query and Zustand.

Engineer AI agents and workflows (LangChain, MCP) that integrate retrieval, memory, and tool use.

Own your infrastructure: manage deployments using Terraform (IaC) on AWS/Kubernetes and handle Vercel configurations for the frontend.

Obsess over quality: Maintain high confidence with Playwright (E2E) and Kotest/Jest/Vitest (Unit), and continuously tune performance (latency, Core Web Vitals).

Leverage AI tooling (Copilot, Cursor, Claude) to accelerate development and share workflows with the team.

Company Description

 We're on a mission to make hotel operations effortless. Our cloud-native platform already powers thousands of properties worldwide, and we're doubling down on AI-driven automation to remove the busy-work from hospitality.

We're a lean, product-obsessed team that values curiosity, data-driven decisions and shipping to production daily. If you love turning complex problems into elegant, resilient systems, we'd love to meet you.

Qualifications

6+ years building production software.

True Fullstack Fluency: Deep expertise in TypeScript (React/Node.js) is a must. Familiarity with Kotlin or Java is highly valued.

Cloud Native: Proven experience running containerized workloads in AWS, Kubernetes, or serverless environments.

Data Polyglot: Comfortable with both relational and NoSQL databases (MySQL, DynamoDB, Redis).

Architectural Eye: You understand DDD and distributed systems patterns, not just syntax.

Communication: You communicate clearly in Spanish / English and thrive on feedback loops.

 

Nice-to-have superpowers

● Experience scaling Monorepos (Turborepo, Nx).

● Hands-on with AI coding assistants or agent frameworks (LangChain, Autogen).

● Experience with GitOps or MLOps pipelines.

Additional Information

Remote-first culture with flexible schedules and core hours.

Goal-oriented work with an amazing, agile, cross-functional team.

Learning budget and career plan.

● An international and diverse environment where you matter.

I am interested
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