Discover the best
hard-tech startups

Airbase

8 open jobsDefenseManufacturingNorth America

The radio frequency (RF) spectrum is a finite resource with exponential demand. Airbase builds the unified software platform for dynamic spectrum licensing, coordination, and intelligence.

QuiverAI

4 open jobsAINorth America

An AI research and product company building world-class models and tools for vector generation and editing.

Aradigm

No open jobsManufacturing

Aradigm is a benefits platform for cell and gene therapies (CGT) designed to provide sustainable access to life-saving medicines. Our novel financial and delivery model addresses the challenges facing every stakeholder—payers, providers, manufacturers, and, most importantly, patients. By creating a large-scale risk pool to cover and pay for all CGT drugs and care, with unspent funds returned, we can deliver cost predictability for employers and health plans. Our end-to-end experience includes a national network of "centers of excellence” and concierge patient support, giving providers volume and rate certainty and patients appropriate, high-quality treatment and outcomes.

dispatch.ai

No open jobsRobotics

Dispatch is creating a platform for local delivery powered by a fleet of autonomous vehicles designed for sidewalks and pedestrian spaces. Funded by Andreessen Horowitz and Precursor Ventures.

Mirendil

15 open jobsAINorth America

Mirendil is an AI research lab building self-accelerating systems that turn compute into scientific and engineering breakthroughs.

Cuein AI

No open jobsAINorth America

Cuein is an AI native conversation data analysis platform. Cuein's Large Language Model Co-Pilot optimizes customer experience to drive better answers, reduced escalations, fewer abandonments and happier customers. Backed by Lightspeed Venture Partners, Khosla Ventures and Webb Investment Network. Acquired by ServiceNow in Jan 2025.

UnifyID is now part of Prove. The Next Generation Platform for Identity and Authentication. Hate passwords? So do we. We believe that within five years, passwords will no longer be the predominant method of authentication. We are UnifyID, a company that is building a revolutionary identity platform based on implicit authentication. Our solution allows people to identify themselves in a unique way that is extremely difficult to forge or crack. Best of all, we are doing it in a way that respects user privacy. We are developing a revolutionary new technique for authentication that relies on implicit authentication. These are factors that are unique to you but don’t require any user action, such as your location, your habits, and various signals from the devices you carry and the sensors around you. We use proprietary machine learning algorithms to discover what makes you unique and calculate a confidence level of how likely it is you based on these signals. Latest Announcements - SXSW Security & Privacy Winner (#1 in 50 finalists, 400 applicants): https://www.sxsw.com/news/2017/2017-sxsw-accelerator-winners-pioneering-solutions-to-tomorrows-problems/ - RSA Innovation Sandbox Unanimous 2017 Winner (#1 in 50): https://www.rsaconference.com/press/73 - TechCrunch Disrupt SF Battlefield Runner-Up (#2 in 1000): https://blog.unify.id/2016/09/19/unifyid-disrupts-disrupt/ - Stanford StartX S15 startup: http://startx.com/companies For more: https://unify.id/press.html We're hiring! https://unify.id/careers.html.

Dominion Dynamics

25 open jobsDefense

Dominion Dynamics is building the interoperable command layer for the Arctic. Our platform unifies diverse sensors, autonomous assets, and human operators into a single, real-time operating picture.

Poseidon

No open jobsRobotics

Real-world data for physical AI

Promptfoo

No open jobsAINorth America

Promptfoo is the leading open-core platform for AI application security, enabling enterprises to identify and remediate vulnerabilities in LLMs, RAG systems, and AI agents before they reach production. Our approach is designed to incorporate AI AppSec from the start of the development lifecycle, aligning with the DevSecOps maturity models organizations follow as security programs shift from manual pen-testing to automated, continuous AI red teaming. 200,000+ developers and over 125 Fortune 500 companies use Promptfoo’s open-source framework in their development workflows. OpenAI and Anthropic also recommend Promptfoo through their online courses.

Toit

No open jobsEnergyEurope

Toit is founded by industry veterans eager to modernize software development for the Internet of Things. We care about performance, robustness, and developer ergonomics and we believe it is time to significantly improve the way software for small network-connected devices is developed, deployed, and maintained. Toit is an IoT ecosystem that includes a virtual machine, a high-level programming language, and management tools that make programming and managing ESP32-based devices easy and secure. With an investment of 1000 lines of code only in the high-level Toit language, you will reap the benefits of full sandboxing and real multi-application running on your device. Our platform is optimized so you can update the whole system or only individual apps as often as you need, even on a shaky connection. With us, you can even consider running your devices on batteries. Give Toit a try by signing up at toit.io.

Galadyne

4 open jobsDefenseManufacturing

Galadyne is redefining modern missile architecture through scalable liquid propulsion and full-stack vertical integration. This architecture restores speed, resilience, and industrial strength to U.S. defense by eliminating fragile energetic supply chains and enabling reliable capability for our allies.

Netography

No open jobsEnergyNorth America

Netography Fusion is the fastest & easiest way to observe network activity in your multi-cloud or hybrid environment. Netography Fusion® is a cloud-native, 100% SaaS platform that delivers security observability for your multi-cloud and on-prem networks, without sensors, agents, taps, or probes. Based in Annapolis, MD, Netography® is backed by some of the world’s leading venture firms, including Bessemer Venture Partners, SYN Ventures, A16Z, and more. For more information, visit netography.com.

Safe Superintelligence

No open jobsAI

We have started the world’s first straight-shot SSI lab, with one goal and one product: a safe superintelligence.

TensorZero

No open jobsAI

TensorZero is an open-source stack for industrial-grade LLM applications. It unifies an LLM gateway, observability, optimization, evaluation, and experimentation.

Ventus AI

No open jobsDefenseManufacturingNorth America

Ventus AI builds computer-using agents that operate software the way people do — navigating screens, handling exceptions, and completing full workflows across any system. Unlike traditional RPA, Ventus agents can manage real-world edge cases, messy data, and high-variance processes that previously required human judgment. Designed for modern operations, Ventus deploys in under one week, without APIs, long integrations, or system changes. Our platform combines advanced automation engineering with deep industry know-how — enabling organizations to automate the repetitive, manual work that slows down teams across healthcare, logistics, insurance, and professional services. What makes Ventus different: • Computer-use agents that work across cloud, legacy, and portal-based systems • Edge-case coverage traditional RPA cannot achieve • <1 week implementation and fast time-to-value • Deep industry expertise across healthcare, logistics, insurance, and services • Enterprise-grade reliability with UI-change resistance and self-healing execution • Scalable automation that expands across teams and systems Where organizations use Ventus: • Healthcare — billing, prior auth, scheduling, claims workflows • Logistics — quoting, dispatch, track & trace, billing, customer portals • Insurance — claims processing, underwriting support, policy administration • Professional Services & BPOs — onboarding, reconciliation, back-office ops • Tech Providers — workflow automation, integrations, product operations Ventus AI helps organizations transform repetitive workflows into scalable, intelligent automations — delivering speed, accuracy, and reliability that grows with your business.

Atla

No open jobsAIEurope

Atla is an AI research and deployment company dedicated to enabling the safe development of artificial general intelligence. Generative AI can only reach its full potential when it consistently produces safe and useful results. We train models to catch errors, monitor AI performance, and understand critical failure modes. We’re a team of researchers, engineers, entrepreneurs and operational leaders, with experience spanning a variety of disciplines, all working together to enable the development of safe artificial general intelligence. We are backed by Y Combinator, Creandum, and the founders of Reddit, Cruise, Rappi, Instacart and more.

Gankster

No open jobsSpaceNorth America

Gankster is the largest LFG (Looking For Group) network, used by millions of gamers across titles like Fortnite, League of Legends, Valorant, and Rocket League.

Backflip

1 open jobAINorth America

Mechanical design, the work done in CAD, is the rate-limiter for progress in the physical world. Despite decades of tooling, only a few million people can effectively design complex mechanical systems. But what if hundreds of millions could? What if creating something in the real world were as easy as imagining the use case, or sketching it on paper? Backflip is building a foundation model for mechanical design. We are unifying the world’s scattered engineering knowledge into an intelligent software copilot. Makers and builders use our intuitive and effortless design environment to give them the superpower of expert mechanical design skills. To protect yourself from potential scams, remember that direct Backflip AI communications come from @backflip.ai email addresses. Legitimate Backflip recruiters will never ask for money, fees, or financial account information before your first day.

WAYZ

No open jobsRobotics

Founded by Vincent Tao, World-class renowned expert and accomplished entrepreneur in mapping and LBS，former CEO of PPTV, former head of Microsoft mapping and Local, Canada Research Chair professor in mapping, and founder/CEO of GeoTango (acquired by Microsoft). Over the past 15 years, Google has harnessed the Internet by indexing the content navigated by users, thus unlocking a $1 Trillion + market. Similarly, Facebook has indexed the social connections of people and ramped another $1 Trillion + market. WAYZ(Wayz.ai) believes that the market for Location Intelligence based on the physical locations and trajectories of People, Assets and Experiences has the potential to unlock a larger market than either of the above. As Google built a “Content Graph” and Facebook built a “Social Graph,” WAYZ(Wayz.ai) is building a “Location Graph” that indexes real physical spaces. WAYZ views the “Location Graph” as a SuperSet of Content and Social Graphs. WAYZ(Wayz.ai) has productized a universal positioning technology that works on any network, any geography, any operating system and can seamlessly locate People. Assets and Events both Indoors and Outdoors. For the Connected Autonomous Vehicle Industry, we will invest in Innovative Business Models that drive Profit Margins & Revenue for our partners. Our Automotive Location Graph enables Vertical Industry applications in Transport Mobility, Logistics, Retail, Finance, Insurance and many other verticals. The aggregated data secured yet monetized in an ethical, transparent process controlled wholly by our customers.

Omnifold

10 open jobsAINorth America

Omnifold precisely models the underlying mechanics of your supply chain and commercial operations, to deliver an intelligent, self-improving forecasting algorithm specific to the complexities of your business. Our technology is designed by Stanford, MIT, and Google researchers, and is based on advances in deep learning, reinforcement learning, and optimization. We are funded by Lightspeed and Kleiner Perkins, along with industry leaders including John Thompson (ex-Chairman of Microsoft), Girish Rishi (ex-CEO of Blue Yonder), and Yannis Skoufalos (ex-Chief Supply Chain Officer of P&G). Omnifold’s platform is deployed with multi-billion dollar corporations and high growth businesses with substantial improvements over AI / ML planning systems.

ImmunOs Therapeutics

No open jobsEnergyEurope

ImmunOs Therapeutics AG is developing the next generation of immunotherapies that have a role in the innate immune system for cancer and autoimmune diseases. The company is developing therapies that not only have direct anti-tumor effects but also remodel the tumor microenvironment to enhance the efficacy of existing immunotherapies. This portfolio of next generation, novel immunomodulatory proteins target diverse and key immunoregulatory receptors. Our lead program iosH2, now advancing to Phase 1 studies, is a multi-functional fusion protein that blocks specific LILRB (leukocyte immunoglobulin-like) receptors and thereby activates anti-tumor responses in multiple cancers with monotherapy and in combination with checkpoint inhibitors (CTLA-4, PD-1, PD-L1, CD47) and costimulatory agonists (e.g. 4-1BB).

Milvus Advanced

No open jobsManufacturingEurope

We transform inexpensive, readily available metals into high-performing nanomaterials critical for producing green fuels and clean energy solutions. Our Midas-touch alloys replicate the functional properties of platinum-group metals at just one tenth of the cost. Milvus is the pioneer in creating substitutes for platinum-group metals at the nanoscale, enabling high-performance catalysis and driving advancements in sustainable technology.

Inertia

7 open jobsEnergyManufacturingNorth America

Inertia is the commercial fusion energy company. We lead laser-based fusion, the only category of fusion energy based on proven physics. To create a world with limitless clean energy, we’re building big. The most powerful laser system ever created for fusion energy. Mass-manufactured targets for affordable fusion fuel. And power plants that can deliver fusion energy at grid-scale. Inertia is creating star power for life on Earth.

UpSmith

4 open jobsDefenseManufacturingNorth America

UpSmith builds software to help trades companies win and tradespeople thrive with technology advantages.

Diode Computers

No open jobsManufacturingNorth America

Diode helps companies to design and manufacture electronics faster and cheaper. We use AI to validate printed circuit board designs and detect mistakes before manufacturing.

ZeroMark

No open jobsDefenseRoboticsNorth America

ZeroMark empowers US and allied forces with cutting-edge defense technology, elevating mission success and safeguarding personnel. Our forte lies in a unique counter-drone solution, manifested through an AI-enabled auto-aiming system. By adapting commercial firearms with our convergence of computer vision and precision robotics, we transform handheld weapons into potent tools for automatically detecting, tracking, and neutralizing drones effortlessly. We recognize that prevailing C-UAS strategies often leave dismounted personnel inadequately prepared to confront the swiftly advancing drone menaces. Our solution ensures that military and law enforcement entities are empowered with proficient drone deterrence and denial capabilities, integrated into the weaponry they already possess and will continue to carry. This approach sidesteps the impractical reliance on multi-million dollar assets to counter a $200 drone threat, presenting a pragmatic and cost-effective defense solution.

RevenueBase

4 open jobsSpaceNorth America

RevenueBase provides the continuously refreshed, verified B2B data that AI agents need to operate reliably—with pricing that doesn’t punish high-volume usage. We power Clay, ZoomInfo, Dun & Bradstreet, Wiza, and Orbital. Flat-rate data feeds. Real-time email verification. Company and contact enrichment. All priced per outcome, not per lookup.

K2 Space

126 open jobsDefenseManufacturingNorth America

Founded in 2004, K2 Space offers bespoke office design and build services to clients, while also working closely with clients to fulfil all of their furniture needs. Our passionate team are proud to work with leading brands like Adobe, Toyota, Beats, Latham & Watkins, Groupon and Wells Fargo to create amazing new workplace. Check out our website to view our latest work | https://k2space.co.uk

Magentic

4 open jobsManufacturing

Magentic provides an enterprise-grade AI Agent Platform for the world’s supply chains. Magentic helps global manufacturers hunt down and deliver P&L savings opportunities with AI teammates called “Mages”.

A stealth mode startup in Silicon Valley

Reactor

No open jobsEnergyNorth America

Ex-Apple, Luma AI, Meta, Microsoft and Google. We have been at every major visual AI inflection point. This is the next one.

Westmag

No open jobsRoboticsManufacturing

Westmag is the American manufacturer of drone motors and robot actuators, backed by Andreessen Horowitz, Founders Fund, Lux Capital, NFDG, Menlo Ventures, and other top investors. Westmag is committed to building and scaling in the U.S. to serve the global market. For more information, visit westmag.com.

R2 Semiconductor

No open jobsCompute / ChipsNorth America

R2 Semiconductor, Inc. is a fabless Semiconductor Company led by experienced industry veterans. R2 Semiconductor is working on a new class of power management technology that will revolutionize the industry. The Company is based in Palo Alto, California.

Zipstack

No open jobsAINorth America

Zipstack envisions harnessing the power of AI to address critical business challenges. As a stepping stone towards our vision, we are excited to introduce Unstract, an intuitive no-code platform, powered by LLMs, which lets you automate your complex document-based workflows. Say goodbye to manual processes that drag on for days – now you can get them done in just a few minutes! Learn more: Unstract.com

WaveForms AI is an Audio LLM research and product company aiming to solve the Speech Turing Test and create Emotional General Intelligence. Learn more at waveforms.ai/about.

Method Security

7 open jobsDefenseManufacturingNorth America

Method builds full-spectrum security products to deliver cyber resilience to America's critical institutions.

Podium Automation

6 open jobsManufacturingNorth America

Podium Automation is reimagining control panel manufacturing to drastically improve lead time and quality. We are a UL 508A and UL 698A certified manufacturer utilizing proprietary software and automation to design and fabricate custom control cabinets in weeks instead of months.

Unlimited Industries

6 open jobsDefenseManufacturingNorth America

Unlimited is an AI-native engineering and construction company. We're here to fix the 50-year decline in our ability to build critical infrastructure: power plants, factories, data centers, and the like. We envision a future of unprecedented abundance - where energy is limitless, the built world assembles itself, and our physical environment constantly inspires us to reach for more. This will not be easy. We’re on a multi-decade long journey to fully automate construction and in doing so, accelerate the pace of human progress. Unlimited is working with industry leading companies to design and build large-scale industrial projects in mining, energy, advanced manufacturing, and data centers. We are currently delivering projects in the United States, and will expand internationally in the future. If you need to design and build projects across mining, energy, process technology, advanced manufacturing, or data centers, and want to redefine what's possible, please get in touch. If you're a builder and you deeply resonate with the mission, come help us make it a reality.

Infinite Machine

1 open jobDefenseManufacturing

Infinite Machine exists to make the most compelling non-cars on earth. We envision a post-car future, where people live harmoniously with nature, in cities and beyond. Our first product is P1: A radical new personal electric vehicle, pairing a cutting edge industrial design with breakthrough performance and utility.

Sphinx

No open jobsAINorth America

Sphinx AI is an applied AI research firm building governed knowledge stores that enable AI to understand data. We ground AI agents in enterprise know-how so they can reliably clean messy data, build robust models, and generate commercially relevant insights from raw information.

Langfuse

7 open jobsAINorth America

Langfuse is the 𝗺𝗼𝘀𝘁 𝗽𝗼𝗽𝘂𝗹𝗮𝗿 𝗼𝗽𝗲𝗻 𝘀𝗼𝘂𝗿𝗰𝗲 𝗟𝗟𝗠𝗢𝗽𝘀 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺. It helps teams collaboratively develop, monitor, evaluate, and debug AI applications. Langfuse can be 𝘀𝗲𝗹𝗳-𝗵𝗼𝘀𝘁𝗲𝗱 in minutes and is battle-tested and used in production by thousands of users from YC startups to large companies like Khan Academy or Twilio. Langfuse builds on a proven track record of reliability and performance. Developers can trace any Large Language model or framework using our SDKs for Python and JS/TS, our open API or our native integrations (OpenAI, Langchain, Llama-Index, Vercel AI SDK). Beyond tracing, developers use 𝗟𝗮𝗻𝗴𝗳𝘂𝘀𝗲 𝗣𝗿𝗼𝗺𝗽𝘁 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁, 𝗶𝘁𝘀 𝗼𝗽𝗲𝗻 𝗔𝗣𝗜𝘀, 𝗮𝗻𝗱 𝘁𝗲𝘀𝘁𝗶𝗻𝗴 𝗮𝗻𝗱 𝗲𝘃𝗮𝗹𝘂𝗮𝘁𝗶𝗼𝗻 𝗽𝗶𝗽𝗲𝗹𝗶𝗻𝗲𝘀 to improve the quality of their applications. Product managers can 𝗮𝗻𝗮𝗹𝘆𝘇𝗲, 𝗲𝘃𝗮𝗹𝘂𝗮𝘁𝗲, 𝗮𝗻𝗱 𝗱𝗲𝗯𝘂𝗴 𝗔𝗜 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝘀 by accessing detailed metrics on costs, latencies, and user feedback in the Langfuse Dashboard. They can bring 𝗵𝘂𝗺𝗮𝗻𝘀 𝗶𝗻 𝘁𝗵𝗲 𝗹𝗼𝗼𝗽 by setting up annotation workflows for human labelers to score their application. Langfuse can also be used to 𝗺𝗼𝗻𝗶𝘁𝗼𝗿 𝘀𝗲𝗰𝘂𝗿𝗶𝘁𝘆 𝗿𝗶𝘀𝗸𝘀 through security framework and evaluation pipelines. Langfuse enables 𝗻𝗼𝗻-𝘁𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝘁𝗲𝗮𝗺 𝗺𝗲𝗺𝗯𝗲𝗿𝘀 to iterate on prompts and model configurations directly within the Langfuse UI or use the Langfuse Playground for fast prompt testing. Langfuse is 𝗼𝗽𝗲𝗻 𝘀𝗼𝘂𝗿𝗰𝗲 and we are proud to have a fantastic community on Github and Discord that provides help and feedback. Do get in touch with us! Langfuse is now part of ClickHouse.

Nuance Labs

7 open jobsAINorth America

Nuance Labs is building a human foundation model: an audiovisual AI that people can talk to face to face, the way they talk to each other. Our goal is to turn everyday interactions with technology into something that feels less mechanical and more like genuine connection. We’re research scientists and engineers who’ve spent years advancing AI avatar and audio-visual generation, publishing at top conferences and shipping ultra-low-latency ML products to millions. Our team is based in Seattle and we collaborate in-person five days a week.

Ineffable Intelligence

1 open jobEurope

Ineffable Intelligence is making first contact with superintelligence.

With a focus on end-of-line robotic solutions for packing, palletizing, kitting, and more across industries, Rapid Robotics' proprietary real-time motion control systems are powered by generative AI and 3D vision. Intuitive, intelligent solutions deliver the adaptability, reliability, and scale you need for modern manufacturing. Configurable robotic deployments are engineered to be set up quickly and exceed operating requirements from day one. Flexible leasing options provide almost immediate ROI, and our RAAS business model gives you instant, on-going support you can rely on.

Satellite Bio

No open jobsSpaceNorth America

At Satellite Bio, we’re on a journey – a quest to treat some of the most elusive diseases known to humankind by pioneering Tissue Therapeutics, an entirely new category of regenerative medicine. With the first-of-its-kind SAT (Satellite Adaptive Tissues) platform, Satellite Bio can turn virtually any cell type into bioengineered tissues that are integrated into the body to restore natural function. These tissues, called Satellites, can deliver the comprehensive cellular response needed to repair or even replace critical organ functions in patients with diseases caused by the interaction of genetic and environmental factors. The SAT platform is an unprecedented technology with the potential to drive a pipeline of sophisticated cell-based therapeutic solutions that tackle a broad range of elusive diseases. Satellite Bio’s quest is as audacious as it is clear: bring new hope to patients and families suffering from elusive diseases. Tissue Therapeutics is how it will deliver on that promise—and why it is deeply committed to leading and realizing the potential of this exciting new frontier in regenerative medicine.

BMSer Technology

No open jobsManufacturingEnergy

BMSER Technology is a high-tech enterprise that specialized in new energy battery management technology research and development, production and management.