Senior AI Platform Engineer (TypeScript, LLMs & Data Systems)

About Us Gramian Consultancy is a boutique consultancy specializing in IT professional services and engineering talent solutions. With a strong background in software engineering and leadership, we help companies build high-performing teams by matching them with professionals who truly fit their needs. Role overview Our client is building AI-native products that transform unstructured information into reliable, structured, and actionable data. Their platform combines large language models, multimodal AI, retrieval systems, and evaluation frameworks to power data-intensive workflows and user-facing experiences. We are looking for a hands-on Senior AI Platform Engineer with strong expertise in TypeScript , backend systems , LLM integrations , and data pipelines . This is a full-stack role with a clear backend focus, where you will design and build production-grade AI systems that leverage LLMs, vision models, retrieval workflows, and evaluation frameworks. The ideal candidate is comfortable owning projects end-to-end, from problem definition through deployment and operational excellence. CONTRACT: Long-term contractor assignment COMMITMENT: Full-time with minimum 4 hours overlap with New York working hours LOCATION: Remote PROCESS: Technical Interviews + Practical Evaluation NOTES: Previous experience working in BigTech company (Amazon, Google, Meta, Apple, Microsoft, Netflix, …) is mandatory! Responsibilities - Design and build AI-powered backend services , APIs, and data pipelines - Develop systems for LLM-powered extraction , classification, and structured reasoning - Build workflows that ground AI outputs in trusted data and verifiable evidence - Implement retrieval , context assembly, and answer-grounding systems - Design and maintain evaluation datasets, scoring workflows, and regression testing frameworks - Develop internal tools for reviewing and validating AI-generated outputs - Build reliable production systems with strong observability , monitoring, and failure handling - Collaborate on React-based interfaces for operational and reviewer workflows - Optimize AI workflows for performance, cost, reliability, and scalability - Work closely with product and engineering stakeholders to deliver production-ready solutions Requirements - 7+ years of professional software engineering experience - Strong experience building backend services , APIs, and data pipelines - Advanced proficiency in TypeScript and Node.js - Production experience integrating LLMs , multimodal models, or AI APIs - Experience building systems that use retrieval , structured context, or grounded AI outputs - Experience creating evaluation frameworks , scoring systems, and regression checks for AI applications - Working experience with React - Experience with PostgreSQL and modern cloud deployment environments