Senior Full-Stack Engineer (AI-Focused)

We are looking for a Senior Full-Stack Engineer to help build the next generation of AI-powered features at Userflow and contribute to the company's transition toward an AI-first product.

You will own the development of AI features end to end, working across frontend interfaces, backend services, APIs, and LLM integrations. Your work will span Userflow's product builder, in-app SDK, Adoption Agent, and MCP connector.

This is a hands-on senior engineering role with significant autonomy and direct collaboration with the CTO, product, and design teams. You will help define the technical direction of AI-powered product development while delivering production-ready features that solve real customer problems.

We are looking for an engineer who combines strong full-stack development skills with practical experience building LLM-powered applications. You should be comfortable using AI coding agents as part of your daily workflow, making independent technical decisions, and taking ownership of the quality and business impact of what you ship.

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• Ship at least one AI-powered feature to production and make it available to customers.

• Establish a functional AI-assisted development workflow involving product, design, and engineering.

• Become familiar with Userflow's architecture, product ecosystem, and existing AI capabilities.

• Identify opportunities to improve the quality, performance, and delivery speed of AI-powered features.

• Deliver AI features that demonstrate measurable improvements in product adoption and customer retention.

• Establish reusable engineering patterns for building, evaluating, and deploying AI-powered capabilities.

• Contribute meaningfully to the company's transition toward an AI-first product architecture.

• Help establish AI-assisted development practices adopted across the engineering team.

• Maintain high standards for product quality, performance, reliability, and cost efficiency.

Userflow is a product adoption platform that helps businesses guide their users toward realizing the full value of their products.

The platform enables companies to create in-app experiences that improve user onboarding, engagement, and product adoption. AI is increasingly central to its product strategy, with capabilities such as the Adoption Agent and MCP connector helping customers interact with and get more value from their products.

Userflow reaches more than 12 million end users through customer applications across the US and EU.

Joining Userflow means contributing directly to the evolution of an established SaaS product, helping shape its AI strategy, and building features that reach millions of users.