Selected work

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Work with a reason.
Systems with a story.

A small selection of personal work, open-source contribution, and professional experience — shown through the problems they were meant to solve.

01 / Case studies

The work behind the tools.

7 selected projects

Personal / Complete · maintenance as needed

herdr-lazy

GitHub

A declarative, reproducible plugin manager and curated distribution for Herdr.

Challenge
Keep a Herdr setup reproducible across machines without turning plugin configuration into a hand-maintained pile.
Approach
Model plugins as a plain list, lock exact commits, and provide a CLI/TUI workflow for syncing a setup.
Stack
RustHerdrTUILockfile

Open source / Merged · open-source contribution

Headroom Docker port configuration

View PR

A bug-fix contribution to Headroom, an open-source context compression layer for LLM applications.

Challenge
Docker deployments could ignore the configured port, leaving health checks and diagnostics probing the wrong port.
Approach
Updated container startup and health checks to honor HEADROOM_PORT, and taught headroom doctor to resolve the configured deployment port.
Stack
PythonDockerpytest

Open source / Merged · first contribution

TiDB optimizer hint warning fix

View PR

A focused bug-fix contribution to TiDB, a Go-based distributed SQL database by PingCAP.

Challenge
Turn a concrete optimizer-hint warning issue into a small, reviewable open-source contribution.
Approach
Followed the issue from a good first issue through implementation, two LGTM reviews, and passing CI.
Stack
GoTiDBOpen source

Professional / Professional work

Daily profit reporting BFF

Built a BFF that delivers daily operating profit data to a management dashboard while migrating the source from Blob to BigQuery.

Challenge
Give a management dashboard a stable API while the reporting data source and its access model were changing.
Approach
Worked across API design, OpenAPI contracts, authentication, authorization, testing, and the Blob-to-BigQuery migration.
Stack
TypeScriptHonoOpenAPIDrizzle ORMBigQuery

Professional / Professional work

E-commerce parcel tracking system migration

A near-real-time pipeline processing roughly 5 billion parcel records per year at ten-minute intervals.

Challenge
Replace a legacy flow while keeping large-scale parcel processing reliable and incremental.
Approach
Rebuilt the pipeline around idempotent incremental processing and parcel-ID deduplication.
Stack
Azure Data FactoryDelta LakePySparkPower BI

Professional / Professional work

Management information SSOT

Built a platform that consolidates company-wide management information into a single source of truth.

Challenge
Bring fragmented management information together while supporting layered permissions and dynamic access control.
Approach
Designed the web application and authorization model, then migrated analytics from Power BI to the new interface.
Stack
Next.jsTypeScripttRPCAuth.jsPrismaApache EChartsBigQuery

Professional / Professional work

GraphRAG research and evaluation

Evaluated whether GraphRAG is necessary for a real-world use case by comparing it with a standard RAG baseline.

Challenge
Decide whether the added complexity of GraphRAG was justified for the use case.
Approach
Compared both approaches across answer quality, cost, and latency to make the trade-offs visible.
Stack
PythonLLMGraphRAG / RAGGoogle Cloud