Senior Software Engineer, Training & Experimentation

Responsibilities

• Design and build backend services that power AI agent orchestration and execution.
• Develop scalable APIs and platform capabilities for tool use, workflow orchestration, memory, and state management.
• Build reliable infrastructure for long-running, distributed AI workflows.
• Partner with product, research, and platform engineering teams to bring new agent capabilities into production.
• Improve platform reliability, observability, and performance as customer workloads scale.
• Evaluate and strengthen technical architecture, engineering processes, and developer tooling.
• Maintain high standards of software quality through testing, automation, continuous delivery, and proactive technical-debt management.
• Mentor engineers on system design, distributed systems, and backend engineering best practices.

Requirements

• Extensive experience building scalable backend systems using Go, Python, Rust, or similar languages.
• Strong understanding of distributed systems, asynchronous processing, APIs, and cloud-native application architecture.
• Experience designing and operating production services at scale.
• Hands-on experience building backend platforms, developer tools, or infrastructure products.
• Familiarity with cloud platforms such as AWS, GCP, or Azure and container technologies including Docker and Kubernetes.
• Proven ability to own large technical initiatives from architecture through production.
• Commitment to software quality, automated testing, observability, and continuous delivery.
• Strong communication skills and effective collaboration across engineering, product, research, and design teams.
• Ability to thrive in fast-moving, ambiguous environments while balancing technical excellence with product impact.

Compensation and Benefits

• Annual base salary: $180,000–$250,000 USD.
• Discretionary bonus and meaningful equity component.
• Medical, dental, and vision coverage for employees and eligible dependents.
• RSUs.
• 401(k) matching in the U.S. and pension contributions in the U.K.
• Unlimited PTO, company holidays, and floating holidays.
• Two-week company-wide winter break.
• Paid parental and family leave.
• Annual learning and development allowance.
• Wellness and work-from-home stipends.
• Four weeks of paid sabbatical leave after four years of service.
• Flexible schedules and a hybrid work model for office-based teams.
• Complimentary meals at office hubs.
• Benefits may vary by location, team, and role.