Yuyang Wang

Software Engineer
Santa Clara, California

I work on AI agents, data tools, and monitoring.

My current projects include an AI data analyst, natural-language workflows, and monitoring for customer deployments in two countries.

Email [email protected]GitHub echo-cool Telegram echo873

Experience

Software Engineer · Polaris Wireless

Jun 2024 — Present

Full-time · Santa Clara, CA

Built an AI data analyst with a streaming agent runtime, resumable sessions, MCP, vLLM, access controls, generated UI, and a query layer for ClickHouse, DuckDB, SQL Server, MySQL, and Postgres.
Built natural-language workflows for AIGIS that turn user requests into validated LC API calls, including fuzzy name matching and date parsing.
Built a co-presence analysis pipeline in ClickHouse for billions of mobility records. It includes a statistical confidence model and runs 5× faster than the previous version.
Built and maintain KPI monitoring for the Critical Infrastructure Protection platform using Flask, Grafana, Prometheus, Loki, and Docker. It runs in production in two countries and handles alerts, scheduled checks, and monthly reports.

Selected projects

Tessalytics

2026

An open-source TeslaMate client for iPhone with live telemetry, trip history, and battery analysis.

iOS
Open source
Data

TestFlight GitHub

Compile N Run

2024 — present

Free, ad-free tutorials for 70+ programming languages, frameworks, databases, and infrastructure tools.

Web
LLM

compilenrun.com

HikeGPS

2026

Offline trail maps for iPhone, with downloadable map regions and GPS tracking.

iOS
Maps

CYD World Clock

2025 — present

An ESP32 desk clock with four time zones, market hours, weather, holidays, and touch controls.

Hardware
Open source

Writing

Aug 23, 2026Starting to write things downNotes on AI agents, data infrastructure, and small hardware projects.Aug 23, 2026Lessons from operating a small Hadoop data clusterPractical failure modes and fixes across HDFS, YARN, Spark, ZooKeeper, HBase, and ClickHouse.May 21, 2026Turning Ericsson Cell Trace files into analysis-ready CSVA dependency-free Python decoder for the stable framing and common headers inside Ericsson Cell Trace files.Sep 21, 2025IMEI, IMSI, MSISDN, and TAC: cellular identifiers without the confusionA practical guide to the identifiers for devices, subscriptions, phone numbers, and device models.