ceena.dev
Sina NaeemiOrange County, CA

Forward Deployed Engineer

Abstract

I ship production systems and spend my research time inside the models that power them. At work that means AI-assisted workflows that turn unstructured business inputs into structured, reviewable operations; after hours it means training GPTs from scratch and instrumenting what they compute. End to end, from the React frontend down to the residual stream.

Interests

  1. Mechanistic interpretability SAEs and activation steering on a ~1B GPT built from scratch; Jacobian-lens research into a 3B model's internal reasoning.

  2. Inference performance — a TensorRT-LLM benchmarking API measuring quantization, batching, speculative decoding, and KV-cache configs under real load.

  3. Applied LLM systems email intake pipelines and MCP support agents with schema validation and human review, shipped end to end.

About

A bit about me

I'm an early engineer at GRiDD Technologies, where I built GNet Connect from the ground up — a B2B transportation platform spanning reservations, documents, partner discovery, support workflows, and internal operations.

I focus on AI-assisted operational systems that convert unstructured business inputs into structured, reviewable workflows — across the full stack, from React/Next.js UIs to backend APIs, SQL/Redis data systems, and retrieval pipelines.

After hours I go under the hood: training sparse autoencoders on a ~1B GPT I built from scratch, steering models with their own features, running Jacobian-lens interpretability research on a 3B model, and benchmarking TensorRT-LLM inference. B.S. in Computer Science, UC Riverside (2023). The case studies below walk through each system in depth.

Experience

Where I've worked

Full-Stack Engineer · GRiDD Technologies / GNet Connect

2024 — Present

Early engineer who built GNet Connect from the ground up — a B2B transportation platform for reservations, documents, partner discovery, support workflows, and internal operations.

  • Built and shipped full-stack product features across React/Next.js, TypeScript, backend APIs, SQL/stored procedures, Redis/RediSearch, and internal admin tools.
  • Designed AI-assisted operational systems built around human review, uncertainty surfacing, and feedback loops — including an AI email intake pipeline for reservations and a Gmail support agent.
  • Worked directly with the CTO, CEO, support team, and customers to turn operational problems into data models, UI flows, backend behavior, and shipped product.
ReactNext.jsTypeScriptNode.jsPythonSQLRedisMCPLLMs

Case Studies

What I've built

Full write-ups for each project: the problem, the design decisions, and what I owned.

Skills

Tools I work with

Frontend

ReactNext.jsTypeScriptJavaScript

Backend

Node.jsPythonREST APIsWorkflow Design

Data

SQLRedisRediSearchData ModelingStored Procedures

AI / Retrieval

LLM WorkflowsEmbeddingsRetrievalPrompt DesignMCPHuman-in-the-Loop

Tools / Platforms

GitHubGmail Add-onsAzureDockerOpenAIAnthropic

Contact

Let's talk

I'm open to interesting problems and good conversations. The fastest way to reach me is email.