Ruby Labs
health, education, and entertainment
MCPEngineer/AIBackendEngineer
Neural analysis suggests this role is
optimal for Mid+ candidates.
“MCP Engineer / AI Backend Engineer at Ruby Labs. Skills: TypeScript, Node.js, Cloudflare Workers, AI Backend. Design, build, and maintain MCP servers. Implement MCP tools, resources, prompts”
What You'll Achieve.
making AI-powered systems reliable; making AI-powered systems scalable; making AI-powered systems easy to use; Build reliable AI-powered tools; Build reliable AI-powered backend systems; Improve the stability, predictability, and maintainability; Optimize backend services for performance; Optimize backend services for reliability; Optimize backend services for cost efficiency; Improve the quality, consistency, and predictability of AI outputs; Improve prompts, context, or tool contracts; Build testable AI workflows; Ensure integrations are secure; Ensure integrations are observable; Ensure integrations are maintainable; Make systems easier to test; Make systems easier to maintain; help teams work faster; help teams work more effectively
Industry & Context.
debugging skills; Investigate and fix issues; Identify root causes; Make systems easier to debug
What They're Looking For.
Must Have
TypeScript, Node.js, backend services or APIs, Hono, Fastify, NestJS, or Next.js backend/API routes, Cloudflare Workers or similar serverless/edge environments, REST APIs, JSON, authentication flows, logging, and error handling, integrations between services and APIs, AI tools, LLMs, and automation, prompt engineering or AI workflow design, clean, maintainable, production-quality code, debugging skills, High ownership mindset, ability to work independently
Nice to Have
MCP / Model Context Protocol, MCP servers or MCP clients, OpenAI, Anthropic, Claude, or similar LLM APIs, designing tool-based AI workflows, Cloudflare KV, Durable Objects, Queues, R2, or D1, PostgreSQL or other relational databases, internal developer platforms or automation tools, agentic workflows, function calling, or tool execution systems, payments, fintech, checkout flows, or orchestration platforms, production AI features
What You'll Do.
and maintain MCP servers
Build reliable communication between AI agents
Define clean contracts for MCP tools
Improve stability of MCP infrastructure
Test MCP tool behavior
Monitor AI-tool interactions
Build and maintain backend services
Work with backend frameworks
Work with authentication
Design backend architecture
Write production-quality code
Build and deploy backend services
Work with edge runtime limitations
Debug issues related to worker execution
Use Cloudflare services
Optimize backend services
Build AI-powered workflows
Improve quality of AI outputs
Analyze AI workflow failures
Structure data and context
Build testable AI workflows
Build integrations between systems
Automate repetitive workflows
Ensure integrations are secure
Build internal utilities
Investigate and fix issues
Make systems easier to debug
Document technical decisions
How You'll Work.
Team & Collaboration
Work closely with backend engineers; Work closely with product managers; Work closely with internal stakeholders
Full Job Description
ABOUT US Ruby Labs is a leading tech company that creates and operates innovative consumer products. We offer a diverse range of opportunities across the health, education, and entertainment industries. Our innovative teams are driving the future of consumer-led products, and we're always looking for passionate individuals to join us. Learn more about our story at: https://rubylabs.com/about-us/ OVERVIEW RubyLabs is expanding its AI and automation capabilities through MCP-based integrations, backend services, internal tools, and AI-powered workflows. We are looking for an MCP Engineer / AI Backend Engineer who will design, build, and maintain MCP-based services and AI-powered backend systems. This role combines TypeScript, Node.js, Cloudflare Workers, backend engineering, AI tooling, and prompt engineering. You will be responsible for developing production-ready MCP infrastructure, building backend services, integrating AI tools into internal workflows, and making AI-powered systems reliable, scalable, and easy to use. ABOUT THE ROLE You will work on the development of MCP-based infrastructure and AI backend services used by internal teams and products. You will work across: - MCP servers and clients - TypeScript / Node.js backend services - Cloudflare Workers - Backend frameworks such as Hono, Fastify, NestJS, or Next.js backend routes - AI workflows and prompt engineering - Internal automation systems - API integrations - Developer tooling You will work closely with backend engineers, product managers, and internal stakeholders to build reliable AI-powered tools and backend systems. WHAT YOU’LL DO MCP DEVELOPMENT - Design, build, and maintain MCP servers and MCP-based integrations - Implement MCP tools, resources, prompts, and backend interfaces - Build reliable communication between AI agents, tools, and backend systems - Define clean contracts for MCP tools and services - Improve the stability, predictability, and maintainability of MCP infrastructure -
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