Airbnb. Stripe. DoorDash. Coinbase. Reddit. Every one of them started as a YC company.

The accelerator has a track record like nothing else in venture. And right now, 20 companies from its portfolio have raised in the last 12 months — and every single one is hiring.

I cover startups worth watching in AngelsRound — the kind investors track before they break out. This is the list.

— Ashher

1. Kalshi The only CFTC-regulated prediction market exchange in the US — letting traders take positions on real world outcomes like elections, economic data, and weather. YC W19. Raised $1B Series E in November 2025 at an $11B valuation, cementing its position as the fastest-growing financial market in America. Hiring across engineering, product, and compliance. 📍 New York | 💰 $1B Series E | 🔗 jobs.ashbyhq.com/kalshi

2. Rippling The all-in-one platform that runs HR, IT, and finance in a single system — managing payroll, devices, benefits, and spend for thousands of fast growing companies. YC W17. Raised $450M at an $16.8B valuation in May 2025. 81+ open roles across engineering, sales, and operations in SF, Dublin, Bangalore, and more. 📍 San Francisco / Dublin / Bangalore | 💰 $450M equity round | 🔗 rippling.com/careers

3. Replit The AI development platform used by teams at 85% of Fortune 500 companies — enabling anyone to build, deploy, and scale software from a single interface. YC S18. Raised $250M in September 2025 at a $3B valuation, targeting $1B in revenue in 2026. Hiring across engineering and product. 📍 San Francisco / Remote | 💰 $250M | 🔗 replit.com/careers

4. Perplexity The AI search engine that answers questions with cited, real-time sources — used by tens of millions of people who want more than a list of blue links. YC W23. Raised $200M Series D in September 2025. 70+ open roles across engineering, sales, and research. 📍 San Francisco | 💰 $200M Series D | 🔗 perplexity.ai/hub/careers

5. Supabase The open source Firebase alternative — giving developers a full Postgres database, authentication, edge functions, realtime subscriptions, and storage in one platform. YC S20. Raised $302M across a Series D and Series E in 2025. Born-remote team across 35+ countries with 180+ employees and 1,500+ open-source contributors. Actively hiring. 📍 Remote (35+ countries) | 💰 $302M Series D+E | 🔗 jobs.ashbyhq.com/supabase

6. Vanta Automated security compliance that helps companies get SOC 2, HIPAA, and ISO 27001 certified faster — used by 10,000+ companies including Atlassian, Chime, and Quora. YC W18. Raised $150M Series D in July 2025 at a $4.2B valuation. Hiring across sales, engineering, and customer success. 📍 San Francisco / Remote | 💰 $150M Series D | 🔗 vanta.com/careers

7. Deepgram The voice AI platform powering speech-to-text, text-to-speech, and full speech-to-speech capabilities at scale — used by 200,000+ developers and 1,300+ organizations including Twilio, Cloudflare, and Sierra. YC W16. Raised $130M Series C in January 2026. 50+ open roles across engineering, sales, and go-to-market. 📍 San Francisco | 💰 $130M Series C | 🔗 deepgram.com/careers

8. Gecko Robotics AI-powered robots that inspect critical infrastructure — climbing inside pipelines, tanks, and industrial facilities to collect data and prevent catastrophic failures. YC W16. Raised $125M Series D in June 2025. 21 open roles across robotics, software, and field operations. 📍 Pittsburgh, PA | 💰 $125M Series D | 🔗 geckorobotics.com/careers

9. Qventus The AI platform simplifying care operations for health systems — automating surgical scheduling, patient flow, and discharge workflows to reduce costs and improve outcomes. YC W14. Raised $105M Series D in January 2025, backed by Bessemer and Norwest. 17 open roles across product, engineering, and implementation. 📍 Mountain View, CA / Remote | 💰 $105M Series D | 🔗 qventus.com/company/working-qventus/job/

10. Exa The AI-native search infrastructure powering the next generation of AI applications — giving developers access to the cleanest, most semantically precise web data available via a single API call. YC S21. Raised $85M Series B in September 2025, led by Benchmark and joined by Lightspeed and YC. Actively hiring across engineering and research. 📍 San Francisco | 💰 $85M Series B | 🔗 exa.ai/careers

11. PostHog The all-in-one product and data toolkit — combining product analytics, session replay, feature flags, A/B testing, a data warehouse, and LLM observability in a single open-source platform. YC W20. Raised $75M Series E in September 2025 at a $1.4B valuation, led by Peak XV and Stripe. 16 open roles across engineering, sales, and support. 📍 San Francisco | 💰 $75M Series E | 🔗 posthog.com/careers

12. Gumloop The no-code AI automation platform used by Shopify, Ramp, Instacart, and DoorDash to build and run complex workflows without writing a line of code. YC W24. Raised $50M Series B in March 2026. 10 open roles across engineering and GTM. 📍 San Francisco | 💰 $50M Series B | 🔗 gumloop.com/careers

13. Harper The AI-native commercial insurance brokerage — replacing traditional brokers with an intelligent platform that sources, compares, and binds coverage in a fraction of the time. YC W25. Raised $47M Series A in February 2026. Actively hiring across insurance, engineering, and operations. 📍 San Francisco | 💰 $47M Series A | 🔗 jobs.ashbyhq.com/harperinsure

14. Glimpse The AI platform for CPG retail operations — automatically retrieving deduction data, validating charges, disputing invalid claims, and recovering lost revenue for brands selling at Walmart, Target, and Amazon. YC S20. Raised $35M Series A in March 2026, led by a16z. Hiring across engineering and sales in NYC. 📍 New York | 💰 $35M Series A | 🔗 jobs.ashbyhq.com/glimpse

15. Juicebox The AI recruiting platform that searches 800M+ professional profiles across 30+ sources using natural language — used by Ramp, Perplexity, and 4,000+ hiring teams to find and engage top candidates without a sales team. YC S22. Raised $30M Series A in September 2025, led by Sequoia. 11 open roles across sales, product, and engineering. 📍 San Francisco | 💰 $30M Series A | 🔗 juicebox.ai/careers

16. Greptile The AI code review agent that understands your entire codebase — catching bugs and merging PRs faster by reviewing pull requests with full repository context. YC W24. Raised $25M Series A in September 2025. 9 open roles across engineering, sales, and research. 📍 San Francisco | 💰 $25M Series A | 🔗 greptile.com/careers

17. Mem0 The memory layer for AI apps — enabling AI agents and applications to continuously learn from past user interactions and personalize responses over time. YC S24. Raised $24M Series A in October 2025, led by Peak XV with backing from Basis Set. 186M API calls in Q3 2025, growing 30% month-over-month. 6 open roles. 📍 San Francisco | 💰 $24M Series A | 🔗 mem0.ai/careers

18. Firecrawl The web data API for AI — turning any URL into clean, structured, LLM-ready markdown or JSON with a single API call. 50,000+ GitHub stars. Customers include Shopify, Coinbase, and MongoDB. YC S22. Raised $14.5M Series A in August 2025. 11 open roles across engineering and content. 📍 San Francisco | 💰 $14.5M Series A | 🔗 firecrawl.dev/careers

19. Wordware The AI agent platform for non-developers — a web-based IDE where domain experts and engineers build task-specific AI agents using natural language rather than code. YC S24. Raised $30M seed — the largest seed round in YC history at the time. #1 Product Hunt launch of all time. 6 open roles in SF. 📍 San Francisco | 💰 $30M Seed | 🔗 jobs.ashbyhq.com/wordware.ai

20. Brex The AI-powered spend management platform replacing legacy corporate cards and expense tools — used by thousands of fast-growing companies to manage cards, banking, travel, and procurement in one system. YC W17. Raised $235M in debt financing in January 2025, opened a new 100,000 sq ft HQ in San Francisco in August 2025. Actively hiring across engineering, product, and GTM. 📍 San Francisco / Remote | 💰 $235M debt round | 🔗 brex.com/careers

List verified April 2026. Job postings change fast — check each careers page directly for current openings.

Written by Ashher

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