Supply Chain Buyer/Planner

About Atomic Semi

Atomic Semi is building a small, fast semiconductor fab.

It’s already possible to build this with today’s technology and a few simplifications. We’ll build the tools ourselves so we can quickly iterate and improve.

We’re building a small team of exceptional, hands-on engineers to make this happen. Mechanical, electrical, hardware, computer, and process. We’ll own the stack from atoms to architecture. Our team is optimistic about the future and we want to continue pushing the limits of technology.

Smaller is better. Faster is better. Building it ourselves is better.

We believe our team and lab can build anything. We’ve set up 3D printers, a wide array of microscopes, e-beam writers, general fabrication equipment - and whatever is missing, we’ll just invent along the way.

Atomic was founded by Sam Zeloof and Jim Keller. Sam is best known for making chips in his garage, and Jim has been a leader in the semiconductor industry for the past 40 years.

About the role

We’re hiring a Supply Chain Buyer/Planner to expand the Manufacturing team’s purchasing capacity. This role will complement Manufacturing and report directly to the Production Manager, who oversees master production scheduling. Because the Production Manager also operates within Business Operations, extending the role to include AP clerk duties is a natural fit, as the Production Manager collaborates closely with the Business Operations Manager.

Responsibilities

• Executing against material requirements generated by the master production schedule.

• Decompose the master schedule into detailed production and purchasing plans.

• Maintaining supply chain master data related to parts, vendors, and lead times.

• Using their understanding of our budget categories, improve financial data accuracy.

Required Experience

• Hands-on experience in purchasing, planning, or operations within electronics/semiconductor, contract manufacturing, or hardware.

• MRP/ERP proficiency and comfort with BOMs, item masters, vendor score cards, etc.

• Strong Microsoft Excel skills and data hygiene habits.

• AP fundamentals: three-way match, coding to budget categories, resolving discrepancies with vendors.

• Vendor management basics: request quotes, compare total landed cost, place POs, chase acknowledgments, and drive OTIF.

• Clear written communication; fast, reliable follow-through; bias for closing loops.

• On-site execution: comfortable working with Receiving to verify deliveries, label, and stage inventory when needed.

Nice-to-have

• ERP/MRP experience; building MRP rules, reorder points, supplier catalogs, and receiving workflows.

• Light scripting/power query for operations (e.g., CSV transforms, simple queries, API imports).

• Exceptional written communication with vendors; executive-ready communications internally.

Working at Atomic Semi

We’re an early-stage hardware startup with solid funding, world-class advisors, and a lab/office in San Francisco, CA. 

Compensation: Atomic Semi is committed to fair and equitable compensation practices. The annual salary range for this role is $110,000 – $125,000. Compensation is determined based on your qualifications and experience. Our total compensation package also includes generous equity in Atomic Semi.

Benefits: Atomic Semi offers the following benefits, subject to applicable eligibility requirements: 

• Medical, Dental, and Vision insurance

• Generous Paid Time Off inclusive of Holidays and Sick Time

• Visa Sponsorship

• Life and Disability Insurance

• Paid Parental Leave

• 401(k) retirement plan

• Weekly Learning & Development opportunities

• Commuter Benefits including Parking and Late Night Uber rides from the office

• Lunches daily, Dinners 3x per week, Stocked Office Kitchen with Snacks and Spindrifts

We are an equal-opportunity employer and do not discriminate on the basis of race, religion, national origin, gender, sexual orientation, age, veteran status, disability or other legally protected statuses.

Export Control Analysis: This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.