Senior Full-Stack Engineer — Build an AI Platform (Hybrid)

Onhires; Barcelona; Híbrido; EUR 70.000 - 110.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Competitive salary

Equity

Hybrid work

Descripción de la vacante

Onhires is seeking a Senior Full-Stack Software Engineer in Barcelona (Hybrid) to join an early-stage AI hardware platform. You’ll own features end-to-end—from architecture to deployment—working directly with founders and customers to solve real-world engineering problems.

You'll collaborate across the stack, build scalable SaaS applications using TypeScript, React, PostgreSQL, and cloud infrastructure, and contribute to AI-powered capabilities that shape the product's future.

Formación

• 3–6+ years of professional software engineering experience.
• Strong experience building production SaaS applications.
• Excellent TypeScript skills across the full stack.
• Experience with React and modern frontend frameworks.
• Strong backend development and API design experience.
• Strong knowledge of PostgreSQL and relational databases.
• Experience with Docker, CI/CD, and cloud infrastructure (AWS, GCP, or Azure).
• Fluent English and willingness to relocate to Barcelona.

Responsabilidades

• Own product development from concept to production
• Design and build scalable full-stack applications
• Develop modern backend services and intuitive frontend experiences
• Translate customer needs into elegant technical solutions
• Write clean, maintainable, production-ready code
• Collaborate directly with founders, engineers, and customers
• Review code and contribute to engineering best practices
• Improve infrastructure, CI/CD pipelines, cloud deployments, and observability
• Build and integrate AI-powered capabilities across the platform
• Help shape the engineering culture as the team grows

Conocimientos

TypeScript

React

Backend development

API design

PostgreSQL

Docker

CI/CD

Cloud infrastructure

English fluency

Herramientas

tRPC

REST APIs

GitHub Actions

Descripción del empleo

Onhires is seeking a Senior Full-Stack Software Engineer in Barcelona (Hybrid) to join an early-stage AI hardware platform. You’ll own features end-to-end—from architecture to deployment—working directly with founders and customers to solve real-world engineering problems.

You'll collaborate across the stack, build scalable SaaS applications using TypeScript, React, PostgreSQL, and cloud infrastructure, and contribute to AI-powered capabilities that shape the product's future.