Stealth Prototype Hardware Engineer

About Limitless 👋

At Limitless, our vision is to free the human mind from its biological limitations. We are starting with memory. 90% of memories are forgotten after just a week. Not only that, but our memory gets worse as we get older. If there is a hearing aid for hearing and glasses for vision then why isn’t there the equivalent for memory? That question is why we started the company. We build software and hardware to capture what you see, say, and hear and make it useful.

The products we have today are just the first step toward our audacious vision.

We have raised over $33m from top-tier investors including Sam Altman, First Round Capital, Andreessen Horowitz, and NEA to help make that vision a reality.

Why Limitless 👀

The work you’ll do will have tremendous impact on not just our company, but on society as a whole. We believe the best version of the future is one in which we augment - not replace - human intelligence with artificial intelligence. This is the key to unlocking humanity’s full potential, and you will play a critical role in helping us get there. Join us.

What kind of prototyping engineer do we need 🚀

We’re looking for a full-stack hacker—someone who is as comfortable soldering circuits as they are writing code. You’re a hardware tinkerer, software builder, and AI experimenter who can take an idea and turn it into reality.

You thrive in ambiguity and own your projects end-to-end. You can take off-the-shelf components, write custom firmware and software, design circuits, and 3D print enclosures—whatever it takes to get something working.

For this role, here’s how we define the ideal fit:

• A tinkerer, not a traditional engineer. You love experimenting, building, and figuring things out — even if it means breaking things along the way.

• Someone who prioritizes prototyping over perfect production. You get excited about rapidly bringing ideas to life, knowing that polish can come later.

• A scrappy, startup-minded builder rather than a big-company specialist. You enjoy wearing multiple hats, moving quickly, and solving problems with creativity instead of process.

• An end-to-end builder instead of a narrow expert. You like owning full solutions from scratch rather than focusing on one specific area.

• Excited by ambiguous problems more than well-defined tasks. You love uncovering the unknown and figuring out what matters most.

What will be your outcome ✅

• Prototype the next generation of hardware at Limitless.

What will help you be successful 👏

Hardware & Embedded Systems:

• Experience with rapid hardware prototyping—you’ve built things fast before.

• Comfortable working with Arduino, Raspberry Pi, ESP32, STM32, and other MCUs.

• Experience with Zephyr RTOS, FreeRTOS, or other real-time operating systems.

• Ability to write firmware (C/C++), build simple circuits, and design basic PCBs.

• Experience hacking together sensors, Bluetooth, microphones, cameras, and displays into functional systems.

Software & Applied AI:

• Experience with Typescript, Python, or React, contributing to frontend/backend development.

• You’ve tinkered with LLMs and built something cool.

What cultural values you need to embody 💥

• ✅ Decisive: Bias for action and learning.

• 🧠 Resourceful: Prioritize well in order to maximize impact with the least effort.

• 📈 Craft: Good judgement & consideration when deciding something is done enough.

• ✋ Candor: Give candid feedback, receive it well, and speak up if you disagree.

• 🗣️ Communication: Be transparent, create clarity out of ambiguity, and do it with zest.

• 🙏 Collaboration: Help each other out, have empathy, and listen well.

Benefits 💯

• Health insurance: best-in-class healthcare for employees and dependents. Includes vision and dental.

• Top-of-market compensation: we strive to offer top-of-market salary and equity.

• Flexible vacation: we want you to take the time you need to rest and relax.

• Employee-friendly equity terms: we offer an extended exercise window and early exercise for any options offered.

• Sell equity along the way: Unlike most startups, we don’t believe in holding you captive with golden handcuffs. When there are opportunities for you to sell a portion of your vested stock, we offer them.

• Remote first: we have team members all over the U.S. and everyone is treated equally regardless of location.

• 401(k) plan: for US employees we offer a 401(k) plan with company matching.

• Office reimbursement: prefer working from an office? We provide a WeWork membership or reimbursement.

• Parental leave: we offer all parents 12 weeks of paid time off to spend time with their new family.

• Quarterly retreats: we have off-sites quarterly to bring everyone together. Past retreats include Seattle, Breckenridge, Calistoga & Mexico.

• Final week of the year off: Enjoy the final week of the year off while we all take time to recharge.

• Choose your gear: we equip everyone with a new top-of-the-line laptop with all the upgrades.

If you're interested in this job, we strongly encourage you to apply: we'd love to see you on our team working toward our audacious vision of freeing the mind from its biological limitations.