Senior Fullstack Dev — Claude AI, Remote Launch

Jobgether; Spain; Remote; EUR 60,000 - 90,000; Full time

Benefits offered by this job

Flexible working hours

Remote or hybrid collaboration

Creative freedom and ownership

Job summary

Jobgether in Spain is seeking a Senior Fullstack Developer (m/w/d) with Claude Code expertise to help launch and evolve an AI-assisted marketplace for life coaching and counseling. You will focus on backend with TypeScript, Node.js, and Firebase, while contributing to frontend with SvelteKit and Tailwind.

The role offers ownership of critical features, scalable cloud integrations, secure auth, and CI/CD pipelines across Firebase Functions.

Qualifications

• Extensive experience in AI-assisted software development, preferably using Claude Code.
• Advanced proficiency in TypeScript for backend development.
• Strong experience with Node.js and Express for server-side applications.
• Hands-on experience with Firebase and Google Cloud Platform.
• Deep understanding of REST API design, including HTTP methods and error handling.
• Experience implementing OAuth 2.0 and JWT-based authentication using Firebase solutions.
• Proven ability to build GitHub-based CI/CD pipelines for Firebase Functions across environments.
• Experience integrating Stripe and Twilio services.
• Familiarity with frontend development using SvelteKit, Svelte, TypeScript, and Tailwind CSS.
• Strong problem-solving skills and maintainable code practices.

Responsibilities

• Lead technical efforts to finalize features for initial marketplace launch.
• Ensure smooth transition from development to operations with reliable deployment processes.
• Promote engineering best practices, including testing and clean code standards.
• Leverage Claude Code to accelerate implementation and productivity.
• Design, develop, and maintain backend services and REST APIs in TypeScript/Node.js.
• Build and manage cloud-based solutions in Firebase and GCP.
• Implement secure authentication with Firebase, OAuth 2.0, and JWT.
• Develop and maintain CI/CD pipelines for Firebase Functions.
• Integrate Stripe and Twilio for payments and communications.
• Support frontend improvements with SvelteKit/Svelte/TypeScript/Tailwind CSS.
• Evaluate IT infra and contribute to technical roadmap.
• Troubleshoot issues and improve platform reliability.

Skills

TypeScript

Node.js

Express

Firebase

OAuth 2.0

JWT

REST APIs

CI/CD

GCP

Stripe

Twilio

SvelteKit

Svelte

Tailwind CSS

Claude Code

AI tools

Tools

Firebase Admin SDK

Mailjet

Job description

Jobgether in Spain is seeking a Senior Fullstack Developer (m/w/d) with Claude Code expertise to help launch and evolve an AI-assisted marketplace for life coaching and counseling. You will focus on backend with TypeScript, Node.js, and Firebase, while contributing to frontend with SvelteKit and Tailwind.

The role offers ownership of critical features, scalable cloud integrations, secure auth, and CI/CD pipelines across Firebase Functions.