Tasklet Reaches $500M Valuation as Cloud AI Agent Runtime Scales in San Francisco

Enterprise AI agent platform Tasklet raised an additional $12.8 million in October 2026 at a $500 million valuation, as reported by Wowtale. The extension round was backed by Union Square Ventures, 359 Capital, Uncorrelated, Robinhood Ventures Fund I, investor Salil Deshpande, angel investor Rakesh Agrawal, Stripe co-founder Patrick Collison, and SCB 10X, according to Techsauce.

The San Francisco-based startup reached roughly $7 million in annualized revenue by its Y Combinator Demo Day presentation in mid-2026, scaling up from $300,000 earlier in the year. The company previously raised a $20 million funding round in April 2026 co-led by Union Square Ventures and Lightspeed Venture Partners, with participation from Y Combinator, Google Senior Fellow Jeff Dean, and Stripe founders Patrick and John Collison, according to Union Square Ventures.

Automating Workflows Through Cloud-Native Runtime

Tasklet builds an operating system for knowledge work that replaces static software-as-a-service workflows with persistent AI agents. Instead of requiring users to construct manual drag-and-drop node charts, Tasklet allows teams to define complex tasks in natural language inside a chat interface. The platform's underlying agent runtime connects to thousands of SaaS applications using pre-built integrations, custom HTTP APIs, or Model Context Protocol (MCP) servers.

When standard APIs are absent, Tasklet provisions headless Linux virtual machines running inside Google Cloud. Using computer vision and a real browser, the platform navigates web interfaces directly, as CEO Andrew Lee detailed in an interview on The New Stack. The runtime writes and executes code in cloud sandboxes to handle bulk data operations, dynamically generates user interfaces on the fly, and responds 24/7 to time-based schedules, webhooks, or application events.

To build out the user-facing product across web and mobile surfaces, Tasklet is hiring an onsite Software Engineer — Product in San Francisco ($225,000 to $425,000). The role involves hands-on individual contributor work to make the platform's multi-model agents fast, simple, and trustworthy.

Founded by Serial Infrastructure Builders

Tasklet was founded in 2025 by Andrew Lee and Jonny Dimond. Both founders previously built Firebase, the backend infrastructure service acquired by Google in 2014, and later built Shortwave, an AI-powered email client. While building AI chat and search capabilities into Shortwave, the team realized users wanted persistent background agents to handle operational workflows rather than just answering questions inside an inbox.

Speaking on the TBPN show during Y Combinator Demo Day, Andrew Lee explained that traditional workflow integrations required hand-coding every connector. Tasklet's architecture uses language models to generate integrations dynamically when needed, allowing agents to query private internal APIs alongside standard software tools.

To maintain and scale these core systems, the company is hiring a Software Engineer — Platform in San Francisco ($225,000 to $425,000). The role owns backend APIs, identity, workspace permissions, billing systems, and analytics infrastructure.

Context Engineering and Model-Agnostic Execution

In a technical breakdown on the Cognitive Revolution podcast, Andrew Lee outlined how Tasklet redesigned its context engineering stack. Instead of feeding unbounded conversation histories into model context windows, Tasklet moves execution history into a persistent file system. The agent runtime dynamically loads context from files while compressing older chat turns into multi-tiered summaries, optimizing prompt caching across sequential agent runs.

To advance this architecture, Tasklet is recruiting a Software Engineer — AI Infra in San Francisco ($225,000 to $425,000). The position is responsible for building the agent harness, execution environments, filesystem integration, and context compaction engines.

Tasklet is also expanding its design and customer support teams at its office at 1 Post Street in San Francisco. The company is seeking a Head of Design Engineering ($300,000 to $450,000) to own end-to-end product design and implement UI directly in production code. Additionally, a Customer Success Engineer ($140,000 to $185,000) will manage inbound support, assist high-value customers, and build AI-augmented support workflows.

Open Roles at Tasklet

All current open positions are full-time and located onsite at Tasklet's headquarters in San Francisco, CA.

See all open roles at Tasklet