Senior Full-Stack / GenAI Engineer- BARCELONA

We are looking for a Senior Full-Stack / GenAI Engineer to join an international AI Products team working on the evolution of a secure, enterprise-grade GPT platform.

You will contribute mainly to back-end development (around 90%), with occasional front-end contributions, building secure and scalable features for document understanding, translation, APIs, automation, web usage and agentic capabilities.

What you will do

• Design, build, test and monitor end-to-end product features.
• Develop and enhance back-end services using Node.js and TypeScript.
• Contribute to front-end development with Next.js and React.
• Design, implement and operate APIs.
• Work with Azure App Services, Cosmos DB, Application Insights and monitoring tools.
• Define usage KPIs and support dashboards, reports or metrics.
• Build automated workflows and operational scripts.
• Ensure solutions comply with security, regulatory and internal standards.
• Collaborate closely with the Tech Lead, Product Owner and international stakeholders.

What we are looking for

• At least 5 years of web application development experience, ideally in Azure environments.
• Strong hands-on experience with JavaScript / TypeScript and Node.js.
• Experience with Next.js and/or React.
• Solid experience with APIs, Azure DevOps and CI/CD pipelines.
• Experience owning the full testing lifecycle, including unit and E2E testing.
• Hands-on knowledge of Azure App Services, Cosmos DB, Application Insights and monitoring.
• Experience with AI APIs or frameworks such as OpenAI, Anthropic, Gemini or Azure AI.
• Knowledge of RAG and agentic / agent-based capabilities.
• Strong prompt engineering skills.
• Fluent English communication skills (B2+).

Experience with Terraform, Bicep, observability tooling, regulated industries, security and compliance will be valued.

Barcelona-based role. Two onsite days per week

Apply now and help shape secure GenAI capabilities at scale.

What we offer

⏱️ Flexible working hours.

A hybrid working model that supports a healthy work-life balance.

Competitive salary and a flexible compensation plan.

🩺 Private medical insurance.

An annual budget for training and professional development.

Language courses.

🤓 Opportunities to take part in technology communities and industry events.

Ongoing follow-up and professional support.

🚀 A development and growth plan tailored to your goals.

At InnoIT, we believe talent thrives in an environment where learning, innovation and enjoying the journey go hand in hand.

🚀 Join our team, contribute to innovative projects and continue growing alongside professionals who are passionate about technology.

Find out more about us

https://www.inno-it.es/

InnoIT Consulting Barcelona Meetup:

https://www.meetup.com/es-ES/Meetup-de-InnoIT-Consulting-en-Barcelona/

InnoIT Consulting Madrid Meetup:

https://www.meetup.com/es-ES/meetup-de-innoit-consulting-en-madrid/

Diversity, Equity and Inclusion

At InnoIT, we actively promote diversity, equity and inclusion. We welcome people from all backgrounds, experiences and professional paths, and we particularly encourage applications from groups traditionally underrepresented in the technology sector.

We assess every application objectively and fairly, ensuring equal opportunities throughout the selection process. We are also committed to making any reasonable adjustments required to provide an accessible and inclusive experience.

We do not discriminate based on gender, age, origin, nationality, sexual orientation, gender identity or expression, religion, disability, or any other status protected by applicable law.

We work to build a diverse, respectful and inclusive workplace where everyone has equal opportunities for professional growth, development and recognition.

If you’re interested in working in an international environment with modern technologies, we’d love to hear from you!