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Instrumental is seeking a Principal Solutions Design Engineer to design cross-functional, production-ready hardware and software solutions for diverse applications across AI infrastructure, networking, consumer electronics, and defense. You will own solutions end-to-end, scoping technical tradeoffs with customer teams and presenting outcomes that influence cost, yield, and throughput.
You'll lead technical engagements, translate requirements into end-to-end inspection solutions, and collaborate
Most senior mechanical engineers we talk to have hit the same wall: you've spent a decade getting great at one product category, and now every new project feels like a smaller version of the last one. You're ready for harder, more varied problems — but most senior IC roles just mean more of the same thing, not different things.
This role is the opposite. You won't spend years iterating on a single product — you'll work across a wide range of customer applications, from AI infrastructure and networking equipment to consumer electronics and defense, often several of them in the same month. Every project is a new engineering challenge, a new manufacturing floor, and a new problem that hasn't been solved yet at that company.
As a Principal Solutions Design Engineer, you'll combine mechanical design, electronics manufacturing expertise, and direct customer collaboration to build custom hardware and software solutions that go straight into real production lines — not a slide deck, an actual station on an actual floor.
And if you've ever considered an MBA or a more strategic track that still uses your technical depth — this role is a rare way to get there without leaving engineering. You'll own solutions end-to-end: scoping technical tradeoffs with customer engineering teams, making the case to their operations and business stakeholders, and seeing your design decisions show up in cost, yield, and throughput numbers. It's the closest thing to running your own technical consulting practice, backed by a team that's already solved half the problems you'll run into.
Instrumental builds the manufacturing acceleration platform behind the world’s most complex electronics. We capture digital exhaust and engineering context from assembly lines—images, test logs, BOM data, performance, repair cycles—and our AI engines identify insights that are difficult or impossible for human engineers to find. We accelerate the companies building the AI era by improving manufacturing yield, throughput, and ramp. NVIDIA, Meta, Cisco, and their manufacturing partners rely on Instrumental to accelerate new product introduction and production.
We're especially excited to talk with engineers who've worked in:
We’re a growing team that consistently works collaboratively, is supportive of each other, and is highly energized by the opportunity for large impact. We actively work to promote an inclusive environment, valuing passion and the ability to learn.
You’re encouraged to apply even if your experience doesn’t precisely match the job description!
The following is a representative annual overall total compensation range for this position within the Bay Area: $210,000-$300,000. In addition, job level & salary opportunity is evaluated through our interview process – we review experience, knowledge, skills, and abilities of each applicant.
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