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About the Role

We are hiring a Senior Manufacturing Engineer to own manufacturing process development and production readiness for Ironsite's hardware, from DFM through production ramp. You will serve as the primary technical interface between Ironsite and our contract manufacturer, driving the processes, documentation, and quality systems that scale our hardware from NPI to volume production. This role works in tight partnership with hardware and firmware engineering to ensure test fixtures, programming stations, and functional test procedures stay tightly integrated with firmware release milestones. This is a founding-era manufacturing role in a company that is already deploying at scale, and what you build becomes the foundation for the rest of the manufacturing organization.

Responsibilities

Define, develop, and document manufacturing processes for electromechanical hardware assemblies and products from NPI through volume production.
Own the DFM (Design for Manufacturability) and DFT (Design for Test) review process, partnering with hardware and firmware teams to ensure designs are production-ready before each build phase.
Oversee tooling and drive tooling qualifications with the CM and suppliers.
Create and maintain manufacturing documentation, including BOMs, work instructions, traveler documents, test specifications, and process control plans.
Lead process qualification activities, ensuring manufacturing processes are documented, repeatable, and in control before production transitions.
Support cost reduction through process optimization, cycle time reduction, and make-versus-buy analysis.
Work closely with firmware engineers to align manufacturing test fixtures, programming stations, and functional test procedures with firmware release schedules.
Flag integration risks between firmware milestones and build readiness, driving resolution across engineering and operations before they become production issues.
Develop and maintain end-of-line test and functional test procedures, including ICT, functional verification, and firmware flashing and validation steps.
Manage the technical manufacturing relationship with our CM, serving as the primary manufacturing engineering interface for process questions, quality issues, and build readiness reviews.
Own the manufacturing impact assessment and implementation of ECRs (Engineering Change Requests) and ECOs (Engineering Change Orders), working across the CM, supply chain partners, and Engineering.
Participate in and own manufacturing metrics and improvement strategies within QBRs.
Drive yield improvement initiatives, investigating production failures through structured root cause analysis and working with suppliers, Engineering, and Quality to implement corrective actions.
Establish and track manufacturing KPIs, including first-pass yield, cycle time, scrap rate, and test escape rate.
Build the quality and yield feedback loop that gets sharper with every build.

Requirements

10+ years of manufacturing engineering experience on hardware products, ideally at a company that scaled from NPI through volume production.
Strong background in high-volume electromechanical assembly, PCBA, injection molding, casting, and system-level integration.
Experience developing and owning manufacturing test strategies, including ICT, functional test, and firmware programming and validation, including the design and coordination of test fixtures.
Demonstrated experience working cross-functionally with firmware and software engineering on test fixture requirements and programming station design.
Hands-on contract manufacturing management experience, including overseas CMs.
Experience with DFM and DFT reviews and driving design changes to improve manufacturability and testability.
Proficiency reading and working with electrical schematics, PCB layouts, BOMs, and mechanical drawings.
Experience leading builds from prototype through production ramp.
Strong quality engineering background, including PFMEA, control plans, SPC, 8D and root cause analysis, and IPC standards.
Experience with wearables, consumer electronics, or ruggedized hardware programs.
Familiarity with contract manufacturers in Taiwan, mainland China, or Southeast Asia.
Ability to generate clear and concise updates to all levels of internal and external stakeholders, including at the executive level.
Detail-oriented, self-motivated, and able to respond quickly to a fast-moving and ever-changing environment.
Proficiency with ERP systems for BOM management and manufacturing order tracking.
Proficiency with PLM systems (Arena, Propel, or similar).
Experience with battery pack and optical subassemblies.
Prior experience as an early manufacturing hire at a hardware startup that scaled from early volumes to full production.
Mandarin or Vietnamese language proficiency.
Experience shipping products with meaningful firmware complexity, where hardware and firmware release cycles had to stay in tight lockstep.

Skills

DFM
DFT
Electromechanical assembly
PCBA
Injection molding
Casting
System-level integration
Manufacturing test strategies
ICT
Functional test
Firmware programming
Firmware validation
Test fixture design
Contract manufacturing management
ECRs
ECOs
PFMEA
Control plans
SPC
8D
Root cause analysis
IPC standards
ERP systems
PLM systems
Battery pack assembly
Optical subassemblies

Location

San Francisco Bay Area (on-site)

Work Type

On-site

Experience Level

10+ years
Senior

Salary/Compensations

$225k-$250k per year

Benefits

Significant early-stage equity
Full benefits including health, dental, vision, and 401(k) with 6% match
Daily catered breakfast and lunch

About the Company

Ironsite is building the intelligence layer for the physical world, designing its own wearable hardware, deploying it alongside craft workers, and transforming shift footage into next-morning reports. Our internal team and purpose-built models label data overnight, delivering actionable insights to superintendents by 5 AM.
We are accelerating the speed, efficiency, and predictability of construction, especially for complex, mission-critical infrastructure projects, including data centers, LNG facilities, sports stadiums, hospitals, and other large-scale developments, by training AI models on egocentric construction footage and labor productivity data.
We are built with a pro-worker philosophy at our core, believing technology should empower the workforce, not replace it. We aim to give craft workers and project leaders better visibility into on-site activities, creating a system where the reality of construction and the chaos of each day is finally available to project leaders.
Ironsite is deployed across several of the largest active construction projects in the country, having captured over 100,000 hours of construction footage across seven states and processing thousands of hours of site activity daily with a worker opt-out rate below two percent. This is enabled by a workforce-first architecture that anonymizes devices, captures no audio, and never releases raw video.
Ironsite is backed by leading investors (8VC, South Park Commons, Saga Ventures) and prominent operators across technology and construction, including Eric Schmidt, Jeff Dean, Jeff Rothschild, Mark Leslie, Scott Wu, Eric Glyman, Karim Atiyeh, Russell Kaplan, and others, alongside over a dozen construction industry operators who have joined as partners.
Longer term, we believe Ironsite is the foundation for the future of construction, envisioning our systems as the operating system for how the physical world gets built, unlocking a fundamentally different way of respect for our workforce where craft workers are more valued, more visible, and better paid for their skill, and where the industry finally has the intelligence layer that makes autonomous construction possible.