Senior Software Engineer, Backend – AI Platform

This is a fully remote position, open to applicants in United States.

📋 Description

• Oversee, implement, and take ownership of technical projects and decisions within the AI Platform team, from the initial design phase to launch and ongoing support.

• Develop and construct gateway, runtime, and evaluation services that securely scale AI workloads for millions of users and transactions.

• Create identity, quota, routing, caching, and failover mechanisms for accountable and manageable AI expenditures.

• Collaborate with security, infrastructure, and product engineering teams to set boundaries for agentic workloads and tool access identity.

• Generate and track system metrics, ensuring operational health through monitoring, alerting, documentation, and on-call management.

• Enhance code review and design standards by delivering presentations and writing technical documentation.

• Utilize AI tools and agentic workflows in coding, design review, and operational processes.

• Mentor, educate, and develop engineers while promoting best practices in design, coding, and testing.

⛳️ Requirements

• A minimum of 4 years of experience in designing, developing, and launching scalable backend systems.

• Proficiency in Python or Kotlin.

• Demonstrated success in developing highly available distributed systems.

• Experience with AWS, MySQL, and Kubernetes.

• Practical experience in production environments with LLMs, agents, or AI frameworks, including inference APIs, LLM gateways, MCP, tool invocation, evaluations, or agent runtimes.

• Comprehensive understanding of AI usage and infrastructure relevant to AI workloads.

• Proven ability to define technical plans and design substantial features or system components.

• Capability to produce high-quality, comprehensible code.

• Expertise in implementing significant modifications within a large codebase without compromising safety.

• Excellent verbal and written communication skills.

• Equivalent practical experience or a Bachelor’s degree in a relevant field.

🏝️ Benefits

• Equity rewards may be part of the overall compensation package.

• Monthly stipends available for health, wellness, and technology expenses.

• 100% subsidized medical insurance for employees and their dependents.

• Dental and vision insurance for employees and their dependents.

• Flexible time off policy.

• Generous holiday schedules.

• Employee stock purchase plan (ESPP) offering discounted Affirm stock.

• Remote-first work flexibility.

• An inclusive interview process with accommodations for disabilities.

• In-person onboarding experience for all new employees.