Senior Software Developer

Galileo Studio; Las Rozas de Madrid; On-site; EUR 65,000 - 95,000; Full time

Job summary

Galileo Studio is seeking a Senior Software Developer to lead the development of web applications and SaaS platforms. You will be the technical reference for architecture, code quality and CD on projects blending product, AI and B2B business.

You will design and implement with Next.js, React and TypeScript, define patterns, and ensure scalable, secure solutions. You will mentor engineers, collaborate with design and product teams, and participate in deployments and incident resolution.

Qualifications

• 5+ years of experience in full-stack or frontend-heavy web development.
• Strong command of React/Next.js, TypeScript and testing and CI/CD best practices.
• Experience with databases (SQL or NoSQL), REST/GraphQL APIs and cloud deployment (AWS, GCP or Azure).
• Solid judgment on performance, accessibility and security in SaaS applications.
• Experience integrating AI into products (LLM APIs, webhooks, queues) is a plus.
• Autonomy, clear communication and a drive to deliver value in small teams.

Responsibilities

• Design and build applications with Next.js, React and TypeScript in cloud environments
• Define architecture, patterns and code standards across multi-product projects
• Integrate backend services, third-party APIs, auth and databases in production
• Mentor junior engineers and review PRs with a focus on maintainability and security
• Collaborate with design and product to iterate fast without sacrificing technical quality
• Participate in estimation, deployments and production incident resolution

Skills

5+ years experience

React/Next.js

TypeScript

Testing & CI/CD

Databases (SQL/NoSQL)

REST/GraphQL APIs

Cloud deployment (AWS/GCP/Azure)

Performance & security

AI integration

Autonomy & communication

Tools

Next.js

React

TypeScript

Job description

We're looking for a Senior Software Developer to lead development of web applications and SaaS platforms at Galileo Studio and its ventures. You'll be a technical reference on architecture, code quality and continuous delivery on projects that blend product, AI and B2B business.

What you'll do

• Design and build applications with Next.js, React and TypeScript in cloud environments
• Define architecture, patterns and code standards across multi-product projects
• Integrate backend services, third-party APIs, auth and databases in production
• Mentor junior engineers and review PRs with a focus on maintainability and security
• Collaborate with design and product to iterate fast without sacrificing technical quality
• Participate in estimation, deployments and production incident resolution

What we're looking for

• 5+ years of experience in full-stack or frontend-heavy web development
• Strong command of React/Next.js, TypeScript and testing and CI/CD best practices
• Experience with databases (SQL or NoSQL), REST/GraphQL APIs and cloud deployment (AWS, GCP or Azure)
• Solid judgment on performance, accessibility and security in SaaS applications
• Experience integrating AI into products (LLM APIs, webhooks, queues) is a plus
• Autonomy, clear communication and a drive to deliver value in small teams