We’re hiring an expert TypeScript/Node.js engineer to build production\-grade GenAI services and developer tools. You’ll design and ship APIs, microservices, and prompt/LLM workflows on Google Cloud—leveraging Vertex AI, Gemini models, and the Gemini CLI—to deliver reliable, secure, and measurable business impact. * Design, implement, and own backend services in **TypeScript/Node.js** (Express/NestJS). * Build **LLM\-enabled features** (retrieval, tool use, structured outputs) using **Vertex AI** and **Gemini** models; automate workflows with **Gemini CLI**. * Create, version, and evaluate **prompts** (zero/one/few\-shot), including guardrails, safety filters, and offline/online **prompt A/B tests**. * Develop **RAG** and function/tool\-calling pipelines; integrate vector stores and scalable embeddings on GCP. * Ship resilient APIs on **Cloud Run/Functions/GKE**, with Pub/Sub events, caching, and observability (Logging, Trace, Metrics). * Establish **LLM evals** (quality, latency, toxicity, hallucination) and telemetry/feedback loops for continuous improvement. * Harden services for security, privacy, and compliance (PII handling, data residency, secrets management). * Collaborate with product, ML, and UX to scope, estimate, and deliver features in iterative milestones. * Champion performance (p95 latency), cost efficiency (tokens/req), and reliability (SLOs, error budgets). * Mentor engineers on GenAI patterns, prompt engineering, and TypeScript best practices. * **8\+ years** building backend systems with **TypeScript/Node.js**; expert in language/runtime internals, async patterns, and performance profiling. * Production experience with **Google Cloud** and **Vertex AI** (endpoints, model registry, evals) and **Gemini models** (text, multimodal, function calling). * Hands\-on with **Gemini CLI** for rapid experimentation, prompting, and workflow automation. * Proven **prompt engineering** skill: prompt design/versioning, system prompts, safety strategies, and measurable eval frameworks. * Strong with **REST/GraphQL**, API contracts, schema validation (OpenAPI/Zod), and **automated testing** (Jest/Vitest). * CI/CD (Cloud Build/GitHub Actions), IaC (Terraform), and containerization (Docker). * Observability mindset: structured logging, distributed tracing, metrics/alerts. * Solid security fundamentals (OAuth2/JWT, least privilege IAM, secret rotation, threat modeling). **Tech Stack** * **TypeScript, Node.js** * **GCP** * **Vertex AI**, **Gemini models**, **Gemini CLI**. Tipo de puesto: Tiempo completo Sueldo: $115,000\.00 \- $120,000\.00 al mes Beneficios: * Aumentos salariales * Caja de ahorro * Seguro de gastos médicos mayores * Seguro dental * Seguro de vida * Vales de despensa Lugar de trabajo: remoto híbrido en Country Club, 44610 Guadalajara, Jal.