• Lead-level backend ownership • Make architecture decisions independently, focusing on scalability, maintainability, and reliability • Design and own backend services in NestJS and TypeScript, from schema to production • Build and maintain GraphQL APIs across a microservices environment • Own database design, optimization, and reliability in Postgres • Define technical direction, not just implementation details • Set and enforce quality standards across both AI-generated and manually written code • Translate ambiguous product needs into clear technical solutions • Contribute to system design, infrastructure decisions, testing strategy, and developer productivity • Operate in an AI-first workflow without compromising engineering standards

• Mejorar la experiencia de nuestros clientes en nuestra plataforma SaaS. • Programación de flujos de compra, integración de tpv o soluciones como Paycomet o Stripe. • Desgloses económicos o procesos relacionados con ficheros norma 34. • Aportar de manera constructiva en la toma de decisiones.

• Build various tooling using mainly Kotlin • Work on IntelliJ plugin, IDEs, coding agents or frameworks for Local AI inference • Responsible for design, scope, testing and implementation • Collaborate with tooling engineers and be part of an organisation specialized in developer tooling

• Design and build scalable AI/ML infrastructure for VLM training, tuning, deployment, and lifecycle management • Leverage agentic coding tools (e.g., Claude Code, Codex) to generate code, tests, and documentation • Direct AI-assisted development by crafting prompts, reviewing outputs, and ensuring production-quality results • Own code quality through reviews with a focus on scalability, performance, and maintainability • Contribute to backend systems, API design, and occasional full-stack development work • Collaborate closely with product, design, and engineering teams to deliver high-impact solutions