Senior Full-Stack Engineer: API & UI for Luxury Concierge

Albertine; España; Remote; EUR 70,000 - 110,000; Full time

Job summary

Albertine is seeking a seasoned full stack engineer to ship features across our TypeScript platform. You’ll shape API contracts, implement service and data work, and build the React UI members and agents actually use.

Both halves must be solid in data choices and UX that feels finished. You’ll work across memberships, bookings, and billing with a focus on robust data models, performance, accessibility, and maintainable code.

Qualifications

• 5+ years building and operating production web products.
• Ability to design REST contracts, schemas, and tests.
• Strong frontend experience with React and TypeScript.
• Proven backend judgment for errors, pagination, transactions, indexing.
• Experience delivering finished UI in an existing React/TS app.
• Comfort with AI-assisted development and async collaboration.
• Excellent remote communication and async documentation.

Responsibilities

• Ship TypeScript features end to end: a vertical API slice on our Hono service - OpenAPI-first contracts, generated types, integration tests - and the React UI that consumes it.
• Design the API contract for the features you own, in conversation with web, iOS, Android, and partner clients, including versioning and backwards compatibility when a shipped mobile app depends on it.
• Model and query the data those features need in Postgres, with sound transactions, indexes, and consistency boundaries, inside the patterns the platform already uses.
• Build the UI in Concierge, LMT, and shared web libraries: forms, multi-step flows, data-heavy screens, loading and error states, responsiveness, and accessibility that meets the existing review bar.
• Follow the frontend architecture, design system, and design-token theming that other people own. Propose UX improvements with design and product; implement them in the patterns already there.
• Wire integrations, webhooks, and background work when the feature needs them, following existing retry, idempotency, and observability patterns rather than inventing new ones.
• Hand platform-scale problems - tenancy isolation, long-running workflows, query performance at 10x, a new integration's failure modes - to the people who own them, with a clear write-up of what you found.
• Use coding agents as a default accelerator with clear specs, sharp review, and solid tests.
• Communicate clearly for a remote team: design notes, PR descriptions, async updates.

Skills

5+ years experience

Product instincts

REST contract design

React + TypeScript

API and UI ownership

Testing and accessibility

AI-assisted development

Remote collaboration

Observability

Tools

TypeScript

React

PostgreSQL

OpenAPI

Hono API

Job description

Albertine is seeking a seasoned full stack engineer to ship features across our TypeScript platform. You’ll shape API contracts, implement service and data work, and build the React UI members and agents actually use.

Both halves must be solid in data choices and UX that feels finished. You’ll work across memberships, bookings, and billing with a focus on robust data models, performance, accessibility, and maintainable code.