Founding AI Systems Engineer

Cypress Labs; Greater London; On-site; GBP 100,000 - 155,000; Full time

Benefits offered by this job

Founding-team equity

Direct ownership of the stack

Job summary

Cypress Labs in London is building a system that autonomously constructs, refines, and reasons with mathematical models of real businesses, to simulate, plan, decide, and act. You will write software across the entire stack, every day.

You will work on infrastructure, data pipelines, integrations, agent orchestration, and domain modeling, collaborating with early design partners to align what we’ve built with real-world needs.

Qualifications

• Experience shipping production software at an organization where craft and tempo are valued.
• Range across backend, infrastructure, and data layers.
• Craft in code with clean, concise and well-reasoned solutions.
• Systems thinking about how components interact and data flows.
• Comfort with math including stochastic differential equations, Bayesian inference and Monte Carlo methods.
• AI-native engineering integrating AI with structured tools and domain logic.
• High agency and ability to work with ambiguity.
• Customer instinct: translate real-world data into engineering priorities.

Responsibilities

• Extend the core platform: event sourcing, domain modeling, agent orchestration.
• Ship, operate, monitor, maintain production infrastructure.
• Build AI agent capabilities: tool design, context assembly, sub-agent architectures, evals.
• Integrate external systems: POS, accounting, labor scheduling, weather, banking APIs.
• Onboard new merchants, diagnose issues, translate operational needs into system capabilities.

Skills

Production software

Full stack experience

Systems thinking

Code craftsmanship

Math comfort

AI-native engineering

High agency

Customer instinct

Job description

Cypress Labs in London is building a system that autonomously constructs, refines, and reasons with mathematical models of real businesses, to simulate, plan, decide, and act. You will write software across the entire stack, every day.

You will work on infrastructure, data pipelines, integrations, agent orchestration, and domain modeling, collaborating with early design partners to align what we’ve built with real-world needs.