Lattice is best all-in-one people platform, giving HR teams everything they need for HR, Talent, and AI—together in one place.The platform seamlessly integrates a modern HRIS with performance management, engagement insights, AI-driven analytics, payroll, and career development tools, giving HR teams everything they need to build high-performing teams and make data-driven decisions that drive business results. Unlike outdated, disconnected systems, Lattice removes tradeoffs between best-in-class people programs and operational efficiency. Because HR teams shouldn't have to choose between strategic impact and a system that just works. With offices in North America and the UK, Lattice serves more than 5,000 customers worldwide, including Gusto, Brilliant Earth, Intercom, Webflow, Calm, NPR, Tide, and more. The company has ranked on the Inc. 5000 list of the fastest-growing private companies for four consecutive years and is rated as a Great Place to Work by 99 percent of its employees.

We work intensively with the companies for three months to get them into the best possible shape and refine their pitch to investors. Each cycle culminates in Demo Day, when the startups present their companies to a carefully selected, invite-only audience. But YC doesn’t end on Demo Day. We and the YC alumni network continue to help founders for the life of their company, and beyond.

About Tofu Tofu is the AI fraud detection platform that protects companies from fake applicants and bad actors. Backed by leading investors, Tofu uses multi-signal analysis to identify sophisticated hiring threats - from AI-generated applications to state-sponsored actors like North Korean IT workers. Companies like Circle.com and Samsara trust Tofu to secure their hiring pipelines. Our fraud detection capabilities include: • AI Fraud Screening: Automatically analyzes every applicant across 40+ of signals - resume metadata, cross-network identity verification, and behavioral patterns - to surface risk before you ever review a resume. • Risk Reports: Clear, recruiter-friendly reports that explain exactly why an applicant was flagged, with actionable recommendations for next steps. • Cross-Network Detection: Identifies applicants who've applied to multiple companies using different identities, exposing coordinated fraud rings. • Continuous Monitoring: Ongoing verification that catches threats that emerge after initial screening. • Deepfake Detection: Detect deepfake usage on interviews and ensure the same candidate shows up to every interview.

Whether you want to level up your skills or build a great team, CodeSignal’s skills assessments and AI-powered learning tools get you where you need to go.

Unified.to helps software teams ship API integrations fast at any scale. We've grown to 20 unified API categories, 280+ integrations, and 1200+ distinct data objects.

With CoderPad you can assess real skills, reduce time-to-hire, and build high-performing teams with coding tests and interviews that reflect real engineering work saving companies an average of $30,000 per hire. CoderPad Screen: Screen smarter, hire faster. CoderPad Screen gives you reliable coding assessments built around real-world engineering tasks—quickly identify top talent, streamline your pipeline, and reduce costly mishires. CoderPad Interview: Interviews built for real engineering work. CoderPad Interview enables your team to conduct real-time, collaborative coding sessions—clearly assess how candidates code, communicate, and solve realistic problems, ensuring confident hiring decisions.

HackerRank helps companies develop the strongest tech teams around. HackerRank helps candidates sharpen their tech skills and pursue job opportunities.

We partner with exceptional teams to help great people hire great people.

At candidate.fyi, our mission is to help recruiting teams create exceptional candidate experiences while reducing the time spent on manual tasks. By empowering TA teams with our suite of tools, we enable them to focus on building meaningful connections and elevating the overall hiring journey. We're here to streamline processes, promote transparency, and ensure every candidate feels valued throughout the hiring process.

Wellfound is the leading hiring platform for startups and tech companies. It provides tools for companies to source, evaluate, and manage applicants. wellfound:ai is a suite of AI recruiting tools that integrates with Gem to automate the busy work of finding talent, so you can focus on turning great candidates into great hires.

A better way to manage background checks. Screen one candidate or thousands with fast, accurate background checks from Checkr.

Enboarder’s AI-driven Intelligent Journey Platform empowers HR leaders to deliver best-in-class, personalized, cross-functional onboarding journeys that significantly accelerate employee time-to-value by connecting new hires with the right people, tools, and resources. Our fully self-serviceable, no-code platform also powers other critical journeys across the employee lifecycle, from internal mobility and offboarding, automating cumbersome administrative tasks that empower HR to do much more with less. Enboarder’s Intelligent Journey Platform is a market-first GenAI-driven solution that: 1. Leverages AI to automatically create best-in-class, personalized, cross-functional employee journeys in minutes 2. Enables hiring managers to structure and streamline highly effective company & functional onboarding processes 3. Offers an unrivaled level of customization, flexibility and agility while automating cumbersome administrative tasks with no reliance on IT