Senior Frontend / Full-stack Engineer (TypeScript) - AI Platform
Build the systems behind an AI agent that plans and executes marketing across real business platforms.
We are building an AI platform that integrates directly with business systems and powers intelligent automation.
This is not just another SaaS backend. You’ll work on systems that process structured business data and drive AI-based workflows at scale.
Manta is an end-to-end trustable, Cloudflare deployed AI CMO agent that uses a per-user agent system approach to make hyper-personalized Action Plans for marketing companies, which manages the ad accounts for our customers. Using an in-house Context Graph-backed system you will build APIs and visualizations for cross-platform workflow visualizations and monitoring, dynamic validations and user-controllable agentic execution.
On top of the above, you will take part in making sure the underlying Knowledge Graph is kept up to date in real-time with the latest data, with a fleet of Cloudflare Durable Objects consuming streams of data from a variety of integrations.

What You Will Do
Build and extend our agents using the Cloudflare Agents SDK and Durable Objects
Develop visualizations of massive action plans, with data and integrations spanning Meta, Google, Shopify and WooCommerce and more.
Contribute to schema-driven integration tooling built from our internal data models
Work on edge computing services that process and stream structured datasets
Help scale per-tenant data environments powering AI decision logic using Knowledge/Context Graphs
Design and maintain scalable APIs and full-stack systems in TypeScript
Monitor user journeys using Posthog and take part in customer interviews to drive the next steps
What We’re Looking For
5+ years of full-stack TypeScript experience, including backend development with Node.js or similar technologies.
Experience working with LLM APIs or AI-driven workflows
Experience building GraphQL APIs (yoga-server)
Cloud and distributed systems experience
Solid understanding of graph databases and edge-based data processing systems
Comfortable working in a small, senior team with ownership
Nice to have:
Cloudflare Worker/Durable Object/Agents SDK experience
Node-based UI (xyflow) experience
RDF/JS, SPARQL experience
Experience with event-driven or streaming systems
Exposure to data-heavy/large domain applications
Startup experience
Why Join us
Work on post-LLM AI systems, that go way beyond simple chat interfaces
Small senior team with strong technical standards
Real ownership and architectural influence
Remote-first with flexibility
Competitive compensation with equity
What We Offer
Real ownership - shape architecture and product decisions from day one
Technically ambitious product - build post-LLM AI systems beyond simple chat interfaces
Small senior team - collaborate with experienced engineers in a focused environment
Modern stack - TypeScript, Cloudflare infrastructure, AI workflows, distributed systems
Remote-first setup - flexible work with async collaboration
Competitive salary + equity - share in the upside as we grow
- Remote status
- Fully Remote
About Staffer
Staffer is an AI-first recruiting company with deep roots in the recruitment industry.
We combine cutting-edge technology with real-world hiring expertise to help businesses find the right talent - faster, smarter, and with less effort.