Grammarly

Grammarly provides an AI-powered writing assistant that operates across browsers, desktop applications, and mobile devices, offering real-time grammar correction, style suggestions, tone detection, and increasingly generative AI features that help users compose and revise text. The company's engineering challenges include running NLP models with low latency directly in browser extensions and desktop applications, building a cross-platform architecture that delivers consistent writing assistance across dozens of integration points, and developing the generative AI capabilities that are transforming the product from error correction toward full writing assistance. Their scale of over 30 million daily active users requires robust infrastructure for real-time text analysis while maintaining the privacy and security expectations of enterprise customers. Grammarly's hiring patterns reflect the competitive pressure from LLM-powered writing tools, with increasing investment in generative AI, on-device ML, and enterprise platform engineering.