Senior Manufacturing Engineer — Hands-on Fusion Hardware

Pacific Fusion; San Francisco (CA); On-site; USD 124,000 - 207,000; Full time

Benefits offered by this job

Equity

6% employer 401k matching

Paid time off

Health insurance

Job summary

Pacific Fusion in San Francisco, CA is seeking a Sr. Manufacturing Engineer to own end-to-end pulser module assembly on the shop floor.

You’ll drive processes, tooling, and workflows, partnering with design engineering to ensure build quality and rapid issue resolution. This hands-on, high-ownership role sits at the heart of our production operations, with opportunities to scale from pilot to higher-volume output and to mentor technicians while delivering measurable improvements in cycle time,

Qualifications

• 3–7 years of manufacturing or process engineering in a hands-on production environment.
• Demonstrated experience leading or mentoring technicians on a production floor.
• Ability to read, interpret, and create engineering drawings, schematics, and GD&T.
• Hands-on experience with complex electromechanical assembly — high voltage, pulsed power, precision mechanical, or similarly demanding hardware preferred.
• Familiarity with quality management systems, non-conformance processes, and root cause analysis methodologies (8D, 5-Why, Fishbone).
• Comfortable working in an early-stage, fast-moving environment where processes are still being defined.
• Hands on experience working at a startup building the prototype units.
• Familiarity with standard machining processes and capable of running equipment.

Responsibilities

• Own end-to-end manufacturing processes for pulser module assembly, from work instruction development through build completion and acceptance.
• Work alongside the technicians to provide fast solutions that can be quickly executed to keep the build progressing.
• Support documentation handoff to the production team for the build processes as well as issues and their respective resolutions.
• Manage build schedule using microsoft project to communicate within the company.
• Partner with design engineering to provide manufacturing feedback, drive DFM improvements, and support first article builds.
• Identify and resolve production non-conformances, leading root cause analysis and implementing corrective actions to prevent recurrence.
• Define and develop tooling, fixturing, and equipment requirements to support safe, efficient, and repeatable assembly operations.
• Track and report production metrics — cycle time, yield, first pass rate — and drive initiatives to hit and exceed targets.
• Support the scale-up of assembly operations as Pacific Fusion transitions from low-rate initial production to higher volume output.
• Support schedule management by clearly defining steps to completion.

Skills

Manufacturing / process engineering

Leadership / mentoring

Mechanical assembly knowledge

GD&T proficiency

High voltage / pulsed power experience

Quality systems & root cause analysis

Reading engineering drawings

Startup environment experience

Education

BS in Mechanical/Manufacturing/Electrical/Industrial Engineering

Tools

MS Project

Machining equipment

Job description

Pacific Fusion in San Francisco, CA is seeking a Sr. Manufacturing Engineer to own end-to-end pulser module assembly on the shop floor.

You’ll drive processes, tooling, and workflows, partnering with design engineering to ensure build quality and rapid issue resolution. This hands-on, high-ownership role sits at the heart of our production operations, with opportunities to scale from pilot to higher-volume output and to mentor technicians while delivering measurable improvements in cycle time,