Senior Software Engineer II, Page Builder (Retailer Platform)

About This RoleAI processing…

Key Responsibilities

• 1
  Lead the CMD service extraction: architect and drive the migration of our Content Management Domain from a Ruby monolith into a dedicated Go service using a strangler-pattern approach; design proto-first API contracts (e.g., v2/GetPlacements), implement concurrent visibility condition evaluation via goroutines, and establish formal SLOs (99.9% availability, under 30ms P90 placement fetch) for a system handling 7M daily requests across 15+ consumer surfaces.
• 2
  Design composable extensibility: replace 125+ hardcoded placement format types with a single composable type built on React components and Liquid templates to eliminate weeks of full-stack engineering per new format and unlock enterprise retailer customization at scale.
• 3
  Shape the AI-native content platform: expose Page Builder capabilities as MCP-compatible endpoints, enabling AI agents to create, preview, QA, and publish pages end-to-end; define how LLM-powered content creation, AI carousels, and agentic page management integrate with CMD.
• 4
  Drive cross-team architecture: own the technical relationship with Shopping/URSA, Feeds, Growth, Loyalty, and Ads; lead API contract design, coordinate migration sequencing, and ensure CMD evolves as a reliable, well-documented platform that other teams can confidently build on.
• 5
  Mentor and multiply the team: raise the engineering bar across Page Builder by mentoring engineers, establishing robust design patterns, and contributing to a culture where AI-assisted development is the default.

Requirements

• 5+ years of professional software engineering experience.
• Strong backend engineering skills with production experience in Go, Ruby, Java, or similar systems-level languages.
• Proven track record designing and leading large-scale technical projects (e.g., service extractions, platform migrations, new system architectures consumed by multiple teams).
• Experience building and operating high-throughput, low-latency backend services (handling millions of daily requests, sub-100ms latency targets, formal SLOs).
• Experience with platform-focused API design (gRPC/Protobuf, GraphQL, or REST) consumed by downstream teams.
• Demonstrated ability to drive technical decisions across team boundaries, including leading design reviews, negotiating API contracts, and coordinating migrations.
• Experience mentoring engineers and elevating team-wide technical standards.
• Strong written and verbal communication skills, including authorship of technical design docs and presenting architecture to leadership and cross-functional partners.
• Background with content management systems, page builders, or CMS infrastructure (content modeling, placement/component resolution, template rendering).
• Hands-on Go experience, including goroutines, channels, and building high-concurrency services.
• Monolith-to-microservice migration experience using patterns like strangler fig, dual-reads, or gradual traffic shifting.
• Experience building self-serve tooling for business users (merchants, retailers, marketers) where extensibility and reliability directly impact customer revenue.
• Experience with multi-tenant platform architecture serving diverse customers with shared infrastructure.
• Familiarity with AI/LLM integration patterns: MCP (Model Context Protocol), agent-based workflows, AI-generated content pipelines, or prompt-to-UI.
• Frontend experience with React/TypeScript (helpful, not required) given our span from backend infrastructure to WYSIWYG editor tooling.
• Experience at companies with analogous products or platforms (e.g., Shopify, Contentful, Builder.io, Webflow, DoorDash, Meta, Amazon).
• Experience with Protobuf/gRPC and proto-first API design.
• Familiarity with e-commerce or marketplace platforms, including retailer needs, storefront customization, and enterprise SaaS dynamics.

Perks & Benefits