Vinith Raj

Engineering reliable systems that help people do meaningful work.

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Designing a Minimal Agentic Orchestrator

December 25, 2025 / Leave a Comment

The Orchestrator: Owning the Loop In the previous article, we established a simple but often misunderstood idea: an agent is not an autonomous entity. An agent is a loop. It observes input, reasons about the current situation, proposes a next step, executes that step through predefined mechanisms, observes the result, and then either continues or … [Read more…]

Posted in: Agentic AI, Series Tagged: agentic ai, agentic systems, ai control loops, ai infrastructure, ai orchestration, ai safety architecture, backend engineering, deterministic execution, distributed systems, llm architecture, llm orchestration, local llm, ollama, on-prem ai, orchestrator design, reasoning vs execution, software architecture, system design, tool-based ai

Agentic AI Series – Introduction

December 19, 2025 / Leave a Comment

Agentic AI has quickly become one of those terms that carries more weight than clarity. Depending on where you encounter it, it is either framed as the next inevitable step toward autonomous systems or dismissed as unnecessary complexity layered on top of language models. Both views miss the point. Agentic AI is neither magical nor … [Read more…]

Posted in: Agentic AI, Articles, Series, Systems Architecture Tagged: agentic ai, ai agents, ai infrastructure, ai system design, applied ai, distributed systems, llm orchestration, llm systems, microservices architecture, on-prem ai, software orchestration, systems architecture, workflow orchestration

From Schemaless DICOM Metadata to Clinician-Friendly Relational Tables in PostgreSQL

December 17, 2025 / Leave a Comment

Introduction In a previous article, we explored a zero-code approach to storing DICOM metadata by persisting vendor-specific and modality-specific tags as JSONB in an extradicomtags column. This approach embraces the reality of clinical imaging data: the schema is heterogeneous, nested, and constantly evolving. By storing the raw metadata as a JSON document and applying GIN … [Read more…]

Posted in: Articles, DICOM modeling, Healthcare Data Architecture, Medical Imaging Infrastructure, metadata, normalization, Research Computing Infrastructure, schemas Tagged: Clinical Data Engineering, Clinical Research Infrastructure, Data Platforms, Database Normalization, DICOM, DICOM Metadata, GIN Index, Healthcare Analytics, Healthcare IT, JSONB, Medical Data Platforms, Medical Imaging Data, PL/pgSQL, PostgreSQL, Radiation Oncology, Relational Schema Design, Research Computing, Research Data Systems, SQL Data Modeling

Building a Zero-Code DICOM Ingestion Pipeline with Orthanc

December 15, 2025 / 1 Comment

The Real Problem: Ingestion Is Not the Product In medical imaging platforms, ingestion is often treated as a prerequisite rather than a core problem. Yet teams repeatedly invest months building custom pipelines just to move DICOM files from point A to point B. A typical from-scratch ingestion pipeline ends up requiring filesystem watchers or DICOM … [Read more…]

Posted in: Healthcare Data Architecture, Medical Imaging Infrastructure, Research Computing Infrastructure, Systems Architecture Tagged: Architecture, Data Ingestion Pipeline, Design, DICOM, DICOM Ingestion, Healthcare, Healthcare Infrastructure, Medical Imaging, Orthanc

A Practical Architecture for Large-Scale Clinical Data Ingestion

December 14, 2025 / Leave a Comment

Clinical environments generate vast amounts of operational data from electronic medical records, oncology information systems, PACS archives, and imaging and treatment-planning platforms. This data has enormous value for research, AI model development, and quality improvement. Yet pulling this data from production systems in a form suitable for analysis is exceptionally difficult. The core challenge is … [Read more…]

Posted in: Articles Tagged: Architecture, Clinical Data Ingestion, Clinical Research Infrastructure, Data Engineering, Design, DICOM, Healthcare, Healthcare Data, Medical Imaging, Metadata Architecture, PostgreSQL JSONB, Research Computing