Seeking Supply Chain Specialist & S&OP Planner roles

EvaYang

Supply Chain & S&OP Planner

Planning powered byAI integration

Material Planner at SkyWater, keeping a wafer fab supplied with critical materials. Before that, purchasing and capacity planning for EV line build-outs at Mino Automation. I build the AI tools and live dashboards that keep the plan accurate.

See my work Get in touch◎ Austin, TX

Resume

Where I've worked.

Dec 2023 — Present

Material Planner

SkyWater Technology (began under Infineon Technologies) · Austin, TX

Plan demand and supply for critical wafer-fab materials: specialty gases, CMP slurry, photoresist and process chemicals.

Tap a story to see what I did

Built a weekly weeks-of-supply risk dashboard that feeds S&OP and MPS decisions.
Rebuilt reorder points, min/max and safety stock from 12 months of usage, then moved materials to MRP auto-release.
Spotted a single-source chemical stockout weeks ahead with a depletion model; production never stopped.
Grew the shortage-risk report from ~100 to ~250 material lines, and kept supply running through two acquisitions.

Story timeline Safety stock demo Stockout early warning Weeks-of-inventory view More SkyWater stories

Feb 2026 — Present

Manager

Belong Automotive Technology · Austin, TX · part-time

Oversee operations, purchasing, HR, IT and warehouse; report to the US CEO and work with US and China leadership.

Led the ERP choice (Odoo vs. NetSuite, SAP, custom) and a 160-page design with a 114-task plan.
Fixed under-licensed engineering software: ~$100K over 3 years, ~40% below the top quote.
Run procurement, import/export, customs and freight, plus full-cycle hiring.

ERP story Licensing story Departments & ERP

Jun 2020 — Oct 2023

Purchasing Analyst

Mino Automation USA · Supplier partner to Tesla, Rivian and Faraday Future

Purchasing and capacity planning for automotive body-in-white and battery line build-outs.

Tap a program to see what I did

Rivian: 3,400+ PO lines ($10M) for 372 robots across 7 lines.
Tesla Cybertruck: staffed 179 contract trades for the ramp and cut labor cost 20%.
Taught myself Power Automate and built an approval workflow that cut missed invoices 50%.

Program timeline Capacity story Invoice workflow EV program spend More Mino stories

2023 — Present

Co-Owner

RBR Property Management · Side business

Co-own a student-housing business; built its systems, dashboards and AI tools by directing AI.

RBR platform AI demos

2015 — Dec 2021

Mathematics

Illinois State University · Illinois Wesleyan University · Illinois

M.S. and B.S. Mathematics (Illinois State, Dec 2021); B.A. Mathematics & Music (Illinois Wesleyan); minor in Computer Science. ASCM planning certificate.

SkillsMaterial PlanningS&OP / SIOPMRP & ERPSafety Stock & Min/MaxDemand ForecastingSupplier ManagementStrategic SourcingCapacity PlanningPurchasing & POsShortage Risk DashboardsData VisualizationPower Automate & SharePointSQLAdvanced ExcelAI IntegrationLean / Six SigmaEnglish & 中文

SkyWater TechnologyMaterial Planner · Dec 2023 – now · began under Infineon

Keeping a wafer fab running.

Demand and supply for critical wafer-fab materials: specialty gases, CMP slurry, photoresist and process chemicals.

~0materials in the shortage-risk report I rebuilt (from ~100)

0recovery paths run at once; production never stopped

0acquisitions with supply kept running

Story timeline

Dec 2023 · Infineon

Material Planner, wafer fab

SituationSpecialty gases, CMP slurry, photoresists, process chemicals.
ActionForecast from the production plan and actual use.
ResultInventory under tight storage limits.

The planning, as charts

Safety stock, rebuilt

On-hand units for one material over 26 weeks

10stockout weeks

60reorder point

On hand Reorder point Stockout week

Stockout, caught early

Bottles of a single-source chemical, week by week

9 wksof warning

0production stops

What the ERP showed Depletion model (actual use + open POs)

Weeks of inventory (WOI)

On hand ÷ average weekly use, per material, projected 12 weeks

1below 2-wk minimum

1below 4-wk target

6at or above target

Week 1

Photoresist · week 1: 3.1 wks, below target · lowest 1.2 in week 5

Target 4–6 wks 2-wk minimum ⚠ Below minimum ↓ Below target ✓ On target ↑ Above target

End-of-life buy: 200 or 300?

Bottles left for a chemical being phased out

OK200 bottles cover it

OK300 bottles cover it

Buy 200 (baseline) Buy 300 (with my buffer) Runs out

Sample data, shaped like real planning work. No employer data is shown.

Supplying EV line build-outs.

Purchasing and capacity planning for automation lines built for Tesla, Rivian and Faraday Future.

0+PO lines placed for the Rivian build

0skilled trades staffed for the Cybertruck build

0%fewer missed invoices after my approval workflow

Program timeline

202120222023

US automation projectsPurchasing & manpower

Project purchasing and labor planning across US sites

RivianNormal, IL

3,400+ PO lines · $10M · 372 robots · 300+ technicians

Tesla MegapackLathrop, CA

Spare parts, long-lead buys, turnkey commissioning

Faraday Future FF91Hanford, CA

54 robots · 7 lines · 51 trades sourced

Tesla CybertruckAustin, TX

179 trades · 34+ equipment rentals · −20% labor cost

Capacity and workflow

Labor capacity, planned like supply

Tesla-related automation build · each dot is one skilled worker

100planned

+100backup access

~20mobilized next day

Planned Reserved with vendors Mobilized overnight

From email chasing to one workflow

Self-taught SharePoint + Power Automate, built after hours

−50%missed invoices

1shared queue

Beforeemailspreadsheetemail?

After

RequestApprovePOInvoicePaid

Owner, status and next step visible for every request. Mockup, not a live capture.

Where the spend went

EV line build-outs

Purchasing mix by program (share of spend)

$10Mpurchased

3,400+ PO linesscope

Robots & tooling46%

Contract labor28%

Equipment rental12%

Spare parts9%

Services5%

Largest categoryTotals are from my resume; the category split is sample data.

Five departments, one manager.

I report to the US CEO and work with US and China leadership.

0departments I oversee

0page ERP design I wrote

0task implementation plan

What I oversee

US CEO · US and China leadership

MeManager

OperationsSets day-to-day priorities and manages performance

PurchasingDirect procurement, suppliers, import/export, customs and freight

HRFull-cycle hiring, onboarding, training, employee relations

ITOdoo ERP project lead; engineering-software licensing

WarehouseReceiving, inventory and outbound

The ERP I'm leading, in four phases

1Phase 1Purchasing, project inventory, purchasing accountingIn build

2Phase 2Full accountingPlanned

3Phase 3Sales and CRMPlanned

4Phase 4HR and peoplePlanned

Supply chain first: it carries the most risk and it's where I know the work best. The design includes about 22 alert rules, budget alerts near 80% and three-way matching. Odoo was chosen over NetSuite, SAP and a custom build.

Belong stories

RBR Property ManagementCo-Owner, side business · 2023 – now

A business I automated with AI.

I'm not a programmer. I built this whole platform by directing AI, for about $300 a month, and I cross-check everything it builds against real records.

The platform

The operations system a student-housing company runs on. Inventory, demand, orders and fulfillment in one system, replacing spreadsheets and email.

Process automationInventory & occupancyVendor integrationData reconciliationPostgreSQLDocuSignAI agents

rbrpmrealty.com/houses

4 rooms open

3 rooms open

2 rooms open

4 rooms open

Visit the live site

AI at work

Guardrails built in

Human approval before anything is sent Practice mode before agents go live Sensitive data redacted before it reaches AI Read-only access for questions Cost tracked per feature Right-sized model for each task

RBR stories

Multitasking, by automation

Three roles. One week.

I hand the routine work to automations and AI agents, and keep the judgment calls for myself.

Tasks landing on me0%✓ Focused on decisions

SkyWaterMaterial PlannerFull-time

BelongManagerPart-time

RBRCo-OwnerSide business

Automations & AI agents0 handled

Me0 judgment calls

Sample week for illustration. The automations below are real.

SkyWaterMaterial Planner · full-time

LiveWeekly weeks-of-supply risk dashboard for S&OP
LiveDepletion model that recalculates run-out dates
LiveMRP auto-release in place of manual orders
LiveShortage-risk report that now catches new items

BelongManager · part-time

In buildOdoo ERP for purchasing, inventory and approvals
In buildPrice-change alerts and clear approval paths

RBRCo-Owner · side business

LiveAI drafts tenant replies; a person approves each one
LiveAI agents enter leases in a vendor tool with no API
LiveSigned lease PDFs read into records, no retyping
LivePlain-English questions answered from live data

I've worked this way at every job. At Mino, a Power Automate approval workflow I built cut missed invoices 50% and stayed in use after I left.

Contact

Hiring for supply chain
or S&OP planning?

I'm always happy to talk about supply chain and S&OP planning roles, putting AI to work in operations, or how I automated a business from the ground up.

eva@evayangscm.com (309) 684-8387

Email me LinkedIn GitHub