Barcelona, Spain (Hybrid)
Employment: Full-time
ABOUT OUR CLIENT Our client is building the AI platform that will redefine the future of hardware engineering.
Their product brings together system architecture, requirements, verification, and engineering workflows into one intelligent platform, helping engineering teams design and build the world's most advanced hardware systems faster and more efficiently.
This is an early-stage company where every engineer has a direct impact on the product, technology, and the future of the business.
ABOUT THE ROLE As a Full-Stack Software Architect, you'll work directly with the founders to help build both the product and the engineering organization from day one.
This is far more than a senior engineering role. You'll own significant parts of the platform, work directly with customers, contribute to strategic decisions, and help build the engineering culture as the company scales.
Build modern full-stack applications and backend services
Own infrastructure, cloud deployments, CI/CD, and observability
Help establish engineering processes,



code quality, and development culture
6-10 years of professional software engineering experience
~ Strong experience designing and owning production software architecture
~ Excellent TypeScript skills across the full stack
~ Strong backend architecture and API design experience
~ Experience with React or another modern frontend framework
~ Deep knowledge of PostgreSQL or other relational databases
~ Experience with Docker, CI/CD, and cloud platforms (AWS, GCP, or Azure)
~ Strong understanding of scalability, security, testing, observability, and system reliability
~ High ownership and comfort working in an early-stage startup
~ Strong communication skills and fluent English
~ Right to work in the EU without visa sponsorship

Founding or early-stage startup experience
Experience leading technical direction or acting as a Software Architect
Knowledge of RAG, vector databases, multi-agent systems,

📌 Full-Stack Software Architect (Cataluña)
🏢 OnHires
📍 Cataluña