Jiajia Zhang
JIAJIA
Workflow & Product Systems
ON

Work

Start with the projects most relevant to internal tools, workflow automation, and operational decision support.

Best Starting Points
O

OpsDesk

Internal tools · workflow automation with human review · support operations

A support/operations demo that turns cases into evidence, draft actions, approvals, feedback memory, and replayable logs.

Strongest Evidence
Deployed demo with support queue, review packages, approval gates, feedback memory, and replay
Shows bounded automation: suggestions stay reviewable, sensitive actions require approval, and runs leave audit traces
Useful for explaining customer-support automation and operations guardrails without claiming enterprise-scale production
Stack
Next.jsTypeScriptPostgresDockerWorkflow designOracle deploy
D

Denmark Flex Planner

Energy infrastructure · constrained optimization · data product

A live, map-first decision-support tool for prioritizing Danish EV charging and local flexibility investments under budget, grid-zone, and regional constraints.

Strongest Evidence
Combines Danish public EV, renewable, grid, and geospatial data into municipality-level planning evidence
Lets users compare scenarios and optimize a constrained investment portfolio with explainable municipality recommendations
Deployed FastAPI and Next.js product with a public interactive map, API health checks, and reproducible smoke tests
Stack
PythonFastAPINext.jsPublic dataConstrained optimizationOracle deploy
N

Nimbus Weather Journal

Product engineering · SwiftUI · API-backed consumer app

A polished iOS weather-journal product with SwiftUI surfaces, shared settings, weather data flows, radar/wind features, and fallback behavior.

Strongest Evidence
Includes TestFlight distribution, CI checks, and feature-level implementation details
Moon/illumination and weather features show feature separation, service layers, and UI state handling
Good proof for SwiftUI, product polish, and backend/API integration discussions
Stack
SwiftSwiftUIWeatherKitSceneKitWidgetsBackend APIs
D

DTU × Mover Thesis

Logistics planning · optimization · operational decision support

A real logistics planning project with Mover context: decide how multi-day deliveries should be admitted, routed, and recovered when depots are under stress.

Strongest Evidence
Turns routing constraints, depot pressure, service feasibility, and runtime limits into a decision-support system
Uses guardrails and experiments to explain when a search improvement is safe to accept
Strong proof for analytical thinking, complex systems, and operations-facing product work
Stack
JuliaVehicle routingALNSOptimizationExperiment designOperational analysis
Supporting Material
C

Cargo Guard

Data quality · operational checks · supporting evidence

A small Python demo that checks whether logistics data is complete, fresh, valid, and ready to trust before teams use it.

T

This Website

Frontend polish · content systems · deployment hygiene

A printer-paper portfolio adapted from the nooc.me codebase and reshaped into a compact, job-facing personal index.