Y Combinator Startups in Los Angeles that are currently hiring 2025

Whatnot is the largest livestream shopping platform in the U.S., connecting buyers and sellers in real-time across any category – from collectibles like trading cards to comics, fashion, sneakers, and more.

Splash is developing the next generation of autonomous surface vessels (ASVs) to provide National Security and defend critical assets such as oil rigs and shipping terminals. Our long-term vision is to make traditional naval vessels obsolete by creating a fleet of low-cost and versatile boats which will be able to dominate the seas. Our expertise in mass manufacturing, engineering and quickly scaling operations will make this vision a reality.

Merlin is an AI-powered ERP for construction companies. We provide construction companies with a single, AI-powered platform to manage their entire business operations. Our platform unifies project management, materials management, finance, estimating, and CRM—traditionally scattered across multiple systems—into one cohesive solution. For the first time, construction firms can automate and oversee every aspect of their projects in a single, intuitive system. Today, construction companies pay for 8-17 different tools - that we eliminate the need for. We reduce - Manual work by 60% - Cut software costs by $10,000 monthly - Complete projects 3x faster. Why Now? We're witnessing a perfect storm of factors: decades of stagnation in traditional ERP systems, a multi-billion-dollar industry built on misaligned incentives, and the transformative potential of AI. This confluence creates a rare cyclical opportunity for market upheaval. The last major shift in this space occurred in the 1990s with the advent of digital systems, and now, 30 years later, we're on the cusp of another seismic change. Customers are crying out for innovation and as AI reshapes the landscape, early customer signals indicate an eagerness for smarter, more efficient systems. It's a unique window of opportunity that opens perhaps once in a multi-decade chance to redefine an entire industry's operational backbone. Team: KS, a BITS Pilani grad and successful startup co-founder, and Ayantika, an IIT alumni and tech expert, bring extensive coding and product development expertise together bringing about over a decade of technical expertise. Sneha ( that’s me), with over a decade of experience in supply chain management and lean manufacturing within the construction industry, has lived the pain of using ERPs in this industry.

Yondu is creating the robotic workforce of the future starting with logistics automation. We're deploying humanoid robots in the first flexible, drop-in picking automation solution designed for 3PLs.

Oversteer is building browser agents to automate web tasks and turn them into reusable, deterministic APIs. You can integrate the API into any system and automate/integrate any website or portal.

Pure is the first transparent marketplace for the $11B Rare Coins Sector & $55B Precious Metals sector. We make it easy to buy & sell authenticated rare coins and precious metals such as Gold, Silver, Platinum, Palladium & Rhodium.

Pirros is reshaping and revolutionizing how Architecture and Engineering firms manage design details. Our software empowers AECO design professionals (Architects, Engineers, Contractors, and Owners) to streamline their detail management process more effectively, reduce errors, and speed up project delivery. We’re building the system of record for detail management in a $12T+ industry that’s been underserved by technology for too long! About Us Backed by top-tier investors and angels (YC, Funders Club, PlanGrid, Elephant) We’ve just closed our Series A of ~$17 million PROFITABLE, ~$3M ARR and growing revenue at +10% month-over-month 200+ firms using us today, growing 10% MoM, 120% NRR Co-founders both come from structural Engineering, so we have industry experience

Illuminant Surgical is building a new way of seeing inside the human body. Our breakthrough platform, Skylight™, is the first real-time anatomical projection system, displaying images directly on the patient to give doctors an x-ray vision view for safer interventions.

Airhart is making airplanes anyone can fly. Our semi-autonomous tech will enable 10x more people to fly their own planes and make flying to Tahoe as easy as driving to the grocery store

Stackup is transforming how businesses manage their on-chain operations by offering a smart account platform designed to simplify and automate complex blockchain tasks. As the need for seamless, secure, and efficient crypto transactions grows, Stackup provides centralized control over decentralized assets, allowing businesses to take charge of every detail of their operations with ease. Our platform integrates advanced security and adaptive features to eliminate the chaos of traditional crypto wallets, empowering businesses to manage their crypto stack in real-time. Whether you’re orchestrating large-scale transactions or ensuring complete transparency, Stackup’s solution brings order and precision to blockchain management—turning crypto chaos into structured, seamless business flow.

Mintplex Labs builds AnythingLLM, an all-in-one desktop, mobile, and open-source on-device AI application that makes local AI practically useful for the everyday person. From chatting with documents to building complex AI Agentic flows - we do it all. AnythingLLM (45K stars) (https://github.com/Mintplex-Labs/anything-llm)

AstroForge is an asteroid mining company. Instead of bringing back the entire asteroid, we break it up, refine, and return only what’s valuable.

Helping pregnant parents save the most personal source of stem cells - from their umbilical cord and placenta - to unlock future disease treatments. Offering cord blood banking, cord tissue banking, and placenta stem cell banking.

TeamOut is a retreat platform for team managers. We offer easy-to-book venues for team retreats. Managers spend months planning for a retreat. We help them do it in just a few days. How? We offer 20+ bedroom private places with robust Wifi that companies can book in a few clicks. This is an incredibly exciting time to meet with your team again, build memorable experiences that your team will remember forever.

Auto parts retailers get product data from hundreds of manufacturers that is inaccurate and inconsistent, often with big gaps in key values. They currently have a team of "catalog managers" who are required to process and enhance this data line by line, resulting in a week to months long lag between receiving product data and actually being able to start generating revenue from those products. Versable leverages AI to scan the web for tens of millions of auto parts listings, and uses a fine-tuned LLM with RAG to instantly process, enhance, and transform data. With just a part number, Versable is able to generate market-ready titles, product descriptions, and specs, in any format that's needed.

Gym Class is a top-rated social game for virtual reality. Download to make friends and hangout, compete and play sports, or create and explore in simulated worlds. Join us on our mission is to connect the world by simulating it.

Turion Space is building spacecraft to move things around in space and image space objects when they’re not, and focused on developing the dual-use technology required to ensure a sustainable future in space. They aim to build a strong foundation selling space domain awareness imagery data while advancing their technology towards an affordable solution for orbital debris removal and eventually asteroid mining. The founding team originates from SpaceX, and after going through the Y-combinator accelerator in summer 2021 went on to raise a $6.2M seed round and is launching their first DROID satellite in early 2023.

With five issued patents covering our core business lines, and more than a dozen additional patents pending this year and more than $5M in revenue, TransAstra is developing the technologies that will drive the rapidly expanding space economy. Our breakthrough Omnivore propulsion system can propel spacecraft, including our Worker Bee commercial OTV with water or virtually any other fluid as a propellant using only concentrated sunlight as a power source. Omnivore is faster, cheaper, and more practical than electric propulsion while being substantially less expensive, safer, and more operationally flexible than legacy chemical propulsion systems. Our Sutter Telescope System can identify and locate resource-rich asteroids and orbital debris that existing technologies can’t find and works synergistically with our Worker Bee OTV for orbital logistics. For government customers, Sutter can identify dark fast-moving objects between Earth and the Moon which currently evade detection, a critical issue for national defense and a key need of the Space Force. We are already using Sutter in ground-based observatories and will begin commercial sales of Sutter SDA data next month having tracked dozens of faint moving objects in space already. Once launched into space, Sutter will be 300,000 times more cost effective than any other known telescope design and will revolutionize sense making in space.

Laylo powers drops for some of the world’s biggest creators and brands. The platform combines landing pages, messaging, link tracking, and more to empower musicians, artists, celebrities, creators and brands with the tools to drive more sales and streams around their most important moments. We're fortunate to work with some of the top musicians, sports teams, media brands and creators to offer the leading Drop CRM.

Axle Health provides scheduling and workforce management software for home healthcare providers. The Axle platform includes a mobile app for clinicians, an operations dashboard for office teams, proprietary logistics algorithms to optimize scheduling, and a patient engagement and booking solution. Axle is integrated with a wide range of EMRs, and the entire Axle product can be customized and accessed modularly via API. Some of the biggest home health care providers in the country use Axle’s software to improve the utilization of their clinical teams, and automate the operational burden of scheduling and dispatching.

Tydo’s Customer Intelligence Platform is a complete data warehouse built for AI powered customer insights. No engineer required.

Vena Vitals makes a small sticker that monitors blood pressure continuously. We've shown that it works in the operating room and is as accurate as the best tools doctors have today, at a fraction of the cost. We're a team of health tech scientists with multiple past startups and exits, and we've built products that have scaled to over 2M users.

Curri provides on-demand, last-mile logistics for construction and adjacent industries with our nationwide fleet of cars, trucks, and flatbeds.

*S19 and YCG F21* Engineering teams shouldn’t be in the dark when it comes to the performance of their mobile apps and user experiences. With our industry-leading mobile observability technology, Embrace aims to give SRE and DevOps teams better insight into what matters most – their users – by tying mobile performance data to backend observability insights. As the only user-focused, mobile-first observability solution built on OpenTelemetry, Embrace delivers crucial insights across both DevOps and mobile teams to illuminate real customer impact – not just server impact – to deliver the best app experiences. Customers like The New York Times, Marriott, Warby Parker, Masterclass, Home Depot, and Cameo love Embrace’s mobile observability platform because it makes extremely complicated and voluminous data actionable.

Our focus is on developing the smallest, fastest heavy lift optionally piloted VTOL aircraft. Our aircraft can be operated in urban environments with no risk of rotor strikes - we don't use rotor systems! Ship anything from downtown LA to downtown San Diego in 20 mins!

BlueCargo is building the automated solution for complex freight transactions. We envision a world where BlueCargo manages all financial transactions between logistics businesses, so they can focus on moving cargo. We help global shippers optimize their supply chain with accurate and automated financial and operational audits, and a tech first user experience. Our startup was founded by two female entrepreneurs, graduated from Y Combinator (2018 batch), and has raised a 4 million seed round followed by a $11m Series A. The company has two offices located in Los Angeles and New York. We are at the beginning of an exciting growth phase where we have already developed product-market fit, a working platform, and hundreds of daily active users. We are looking for a Senior Software Engineers to grow the team and deliver a product to bring us to the next level. If working to bring technology to the logistics industry sounds exciting, then we’d like to connect with you! We are looking for a highly experienced professional who has created several full stack web applications and has experience with AWS.

Relativity is building humanity’s multiplanetary future. We invented a new approach to design, build, and fly our own rockets, starting with Terran 1 – the world’s first entirely 3D printed rocket, and Terran R, our next generation medium-heavy lift fully reusable launch vehicle. As a vertically integrated technology platform, Relativity is at the forefront of an inevitable shift toward software-defined manufacturing. By fusing 3D printing, artificial intelligence, and autonomous robotics, we are pioneering the factory of the future. Disrupting 60 years of aerospace, Relativity offers a radically simplified supply chain, building a rocket with 100x fewer parts in less than 60 days. We believe in a future where interplanetary life fundamentally expands the possibilities for human experience. Our long-term vision is to upgrade humanity’s industrial base on Earth and on Mars.

Open Listings was the all-in-one homebuying app designed to make buying a home simple and more affordable. We helped buyers purchase billions of dollars worth of homes and saved them over $25 million in commission fees. Acquired by Opendoor in 2018.