Staff Engineer – AI-Native Commerce

Phoenix Ecommerce Technologies

. Build AI at the core of Phoenix's storefront platform, beginning with the copy-site flagship feature .

Posted 10/5/2026full-timeRemote • United StatesLeadWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in building AI-driven storefront platforms, with a strong focus on architecture, production code, and operational reliability. Proficient in designing APIs, data models, and autonomous workflows while ensuring high standards of observability and performance measurement.

Highest-signal resume keywords

Expert-Level TypeScriptNode.js DevelopmentAI-Native Engineering PracticesProduction Reliability and ObservabilityFull-Stack Fundamentals

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

Production Web PlatformsBuilding Production Systems with LLMsAgent OrchestrationAPI DesignData ModelingTestingDistributed SystemsRegression TestingObservabilityPerformance Measurement

Soft Skills

Strong Written Technical CommunicationHigh Ownership and Builder Mentality

Tools & Technologies

PostgresMongoDBRedisPlaywrightMCP ServersNestJSShopifyLiquid

Industry Keywords

EcommerceStorefrontsDTCDirect ResponseTransaction-Heavy Environments

Tech Stack

Tools & technologies

Distributed SystemsJavaScriptMongoDBNode.jsPostgresReactRedisTypeScript

About the role

Key responsibilities & impact

Build AI at the core of Phoenix's storefront platform, beginning with the copy-site flagship feature
Make the AI agent exceptional and build subsequent agents
Own multiple technical domains, make architecture decisions, write production code, and own outcomes
Design agent tools and execution loops, merchant confirmation points, evals, tracing, observability, and cost tracking
Harden and expand MCP infrastructure and tool surfaces for modifying pages, components, styles, and data bindings
Build evaluation systems against real commerce experiences
Build infrastructure for agents to generate, validate, deploy, measure, and optimize storefront experiences
Design autonomous workflows with contracts, guardrails, verification, and human checkpoints
Design APIs, data models, service boundaries, and architecture for the AI-native storefront platform
Work with TypeScript/Node.js services, React applications, Postgres, MongoDB, Redis, and related systems
Advance AI-native engineering through specifications, parallel agents, verification, custom agents, skills, hooks, MCP servers, and automated infrastructure
Build deterministic fixtures, Playwright E2E tests, golden-file rendering tests, integration tests, visual regression systems, and quality gates
Own observability, tracing, SLOs, and operational reliability
Author ADRs, RFCs, and technical specifications; lead design and code reviews

Requirements

What you’ll need

8+ years building production web platforms, including Staff-level impact as an architect and hands-on builder across multiple systems or technical domains
Real experience building production systems with LLMs and agents, including tool calling, schema-constrained generation, agent orchestration, autonomous workflows, or agentic SDKs
Experience proving agentic systems through evals, tracing, observability, regression testing, and/or cost and performance measurement
Demonstrated AI-native engineering practices using coding agents, specifications, parallelized agent work, and rigorous verification
Experience with custom agents, skills, hooks, MCP servers, AI code review, or similar AI-assisted engineering infrastructure
Expert-level TypeScript and Node.js
Strong full-stack fundamentals across API design, data modeling, testing, distributed systems, and production operations
Experience with relational, document, and caching systems such as Postgres, MongoDB, and Redis
Strong understanding of production reliability, including observability, tracing, SLOs, incident response, and operating systems built
Strong written technical communication, including ADRs, RFCs, and technical specifications
High ownership and builder mentality; comfortable taking ambiguous problems from architecture through production
Preferred: experience in ecommerce, storefronts, DTC, direct response, payments, or transaction-heavy environments
Preferred: Shopify, Liquid, commerce platforms, templating systems, page-builder/CMS infrastructure, high-performance rendering, MCP systems, browser automation, autonomous deployment/testing/optimization, advanced caching, NestJS, or open-source contributions