Jobs in Chelmsford, Grande-Bretagne

At Webflow, our mission is to bring development superpowers to everyone. As the pioneer of the Website Experience Platform (WXP), we’re redefining how teams Build, Manage, and Optimize for the web — combining visual development, powerful content management systems, AI-driven personalization, seamless hosting, and end-to-end analytics in a single, unified platform. With AI at the core, Webflow helps teams move faster, create more performant digital experiences, and scale without heavy engineering support.

Location: Remote-first (United States; BC & ON, Canada)
Full-time • Permanent • Exempt

The cash compensation for this role is tailored to align with the cost of labor in different geographic markets. Base pay ranges are organized into zones for geographic markets; specific base pay within the range is determined by location, experience, knowledge, qualifications, and skills. This role is eligible to participate in Webflow's company-wide bonus program, with target amounts varying by career level and payouts based on company performance.

Please visit our Careers page for more information on which locations are included in each geographic pay zone and confirm your zone with your recruiter.

Reporting to the Engineering Manager, Growth

• Lead architecture and design for features that integrate with large language models, diffusion models, and related AI technologies.
• Assess the impact of technical decisions across features and teams, not just within the immediate team.
• Maintain a high bar for AI feature quality while delivering value to users incrementally.
• Stay up-to-date on AI/ML advancements and assess relevance to Webflow’s strategy.
• Collaborate with product engineering to identify and implement AI solutions that improve user experience and solve specific use cases.
• Develop and maintain user interfaces that integrate AI models and algorithms.
• Assist in developing and integrating third-party AI APIs into the product architecture.
• Develop a deep understanding of the architecture and codebase and the customers who use Webflow products.
• Build quality feedback tooling, including traditional unit and integration tests as well as AI-specific evaluations and quality measurements.

Webflow supports employees in identifying interests and development opportunities and will help incorporate them into the role.

You’ll thrive as a Senior Software Engineer, AI if you:

• Have 5+ years of experience shipping code for consumer-facing web products.
• Have 2+ years of experience building products that depend on AI/ML.
• Have development experience with Node.js, React, TypeScript and a broad understanding of web technologies.
• Are proficient with AI concepts and technologies, including large language models, fine-tuning, vector databases and prompt engineering.
• Are passionate about AI and building great user experiences on top of these technologies.
• Possess strong knowledge of web development best practices, including responsive design, web performance metrics, and accessibility standards.
• Effectively communicate and collaborate with cross-functional teams.
• Enjoy solving large technical problems in a collaborative, distributed team.
• Can debug production issues across services and multiple levels of the stack.
• Take ownership and drive projects to business impact.

• Build lasting customer trust. We take action to put customer trust first.
• Win together. We win as one team; success is a collective effort.
• Reinvent ourselves. We imagine what’s possible beyond existing solutions.
• Deliver with speed, quality, and craft. We move fast while maintaining high standards.

• Equity ownership (RSUs) in a growing, privately-owned company
• 100% employer-paid healthcare, vision, and dental insurance for full-time employees and their dependents
• Paid parental leave and parental-related benefits (as applicable by country)
• Flexible PTO and sabbatical program
• Access to mental wellness resources and coaching
• Monthly stipends to support work and wellness
• 401k or pension plans where statutorily required, plus financial wellness benefits

We are an Equal Opportunity Employer and are committed to building an inclusive global team. Employment decisions are made on job-related criteria without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other classification protected by applicable law. See our EEO policy for details.