Delta Engineer - UK

About the Role

We are an applied AI lab building end-to-end software agents. We're the makers of Devin, the first AI software engineer, and Windsurf, the AI-native IDE. Together, they represent our vision for collaborative AI teammates that enable engineers to focus on more interesting problems and empower teams to strive for more ambitious goals. Our team is small and talent-dense. Among our founding team, we have world-class competitive programmers, former founders, and leaders from companies at the cutting edge of AI including Scale AI, Palantir, Cursor, Waymo, Tesla, Lunchclub, Modal, Google DeepMind, and Nuro. Building Devin and Windsurf is just the first step—our hardest challenges still lie ahead. If you’re excited to solve some of the world’s biggest problems and build AI that can reason on real-world tasks, apply to join us. Delta Engineers bring technical depth to Cognition’s most complex enterprise engagements. You'll own the technical direction of a focused set of high-impact accounts, tackling the hardest problems that shape long-term adoption, architecture, and how the Cognition platform evolves. This means architecting deployments, building integrations, and debugging what no one else can figure out. A core part of this role is shaping the product. You'll identify patterns from the field, build on the product edge to unblock customers, and translate those learnings into requirements that inform what core engineering builds next. When customers hit friction that the product doesn’t solve, you’re the person who figures out what should exist—and makes it happen.

Responsibilities

• Operate across strategic accounts, providing technical depth on complex engagements
• Own the technical direction and success of customer accounts and deployments
• Translate customer pain points into product direction: scope requirements, define solutions, and drive implementation
• Build product extensions and integrations using Cognition’s APIs and platform primitives
• Architect and maintain complex enterprise deployments
• Handle escalated technical issues requiring deep debugging or architectural judgment
• Be a credible technical voice to engineering on what the field needs

Requirements

• Strong engineering foundation
• Have operated cross-functionally—whether at a startup wearing multiple hats or by driving product/commercial thinking at a larger company
• Have a track record of pursuing excellence at high levels, in any domain
• Proficiency in Python, TypeScript, or similar; comfort navigating unfamiliar codebases
• Experience scoping and shipping features in collaboration with product and engineering teams