Sr. Engineer, Fullstack (Zapier MCP)

About Zapier

We're humans who simply think computers should do more work.

At Zapier, we’re not just making software—we’re building a platform to help millions of businesses globally scale with automation and AI. Our mission is to make automation work for everyone by delivering products that delight our customers. You’ll collaborate with brilliant people, use the latest tools, and leverage the flexibility of remote work. Your work will directly fuel our customers’ success, and as they grow, so will you.

Senior Engineer, Full Stack, Zapier MCP

Remote - Americas | Full-Time | Engineering

Date published: 6/28/25

At Zapier, we're on a mission to make automation work for everyone. That means building products that empower people to do more with less and designing systems that scale as our users grow. The Agent Platform team is at the forefront of this vision—we're bringing the power of Zapier’s 8,000+ app integrations to the new frontier of third-party AI agents, via Zapier MCP and future products like it. These agents are redefining how users get things done, and we’re building the infrastructure that lets them access Zapier’s vast ecosystem seamlessly.

We’re looking for a Senior Full Stack Engineer to join our team. If you're excited about creating developer experiences and integration pathways for AI-driven systems - and you thrive at the intersection of cutting-edge AI tools and reliable platform engineering - this could be your next role.

About You

• You’re a full-stack builder. You’ve developed and maintained production systems end-to-end. You’re comfortable writing frontend interfaces (React/Next.js preferred) and backend services (Python or Node.js ideal), and you’re not afraid to go deep into API design, database modeling, or CI/CD pipelines.

• You understand and leverage AI tooling. You know how to use AI tools to accelerate your own development process (e.g. GitHub Copilot, Cursor), and you also get excited about building systems that enable others to use AI effectively. You’ve worked with or implemented components like model context protocol or agent frameworks.

• You thrive on platform thinking. You’ve built or contributed to platform products before, with a focus on extensibility, documentation, and robust foundations. You can make the complex simple for our customers.

• You lead with empathy and curiosity. You continuously seek context, ask great questions, and stay oriented to the bigger picture.

• You bias toward action, especially when next steps aren’t obvious. You create structure, clarity, and momentum for the team surrounding your projects. You’re pragmatic and know when to ship fast and iterate - and when to sweat the details.

• You demonstrate an ownership mindset. You take initiative without needing top-down direction, but you’re also an effective communicator who can bring others with you. You have sound judgment, and balance user needs, technical constraints, and product goals in your decisions.

• You’re a self-starter who is comfortable with ambiguity. You can turn loosely defined problems into concrete action, you follow through on commitments, and you surface blockers early to recruit help defining solutions.
  

Things You’ll Do

• Design and implement features that allow third-party AI agents to connect with Zapier’s platform and run activities for end-users across 8,000+ applications.
  

• Build and maintain tools and SDKs that help third-party developers quickly integrate with Zapier for an intuitive end-user experience.
  

• Establish and evolve our Model Context Protocol implementation - enabling intelligent, multi-step workflows derived from natural language.
  

• Collaborate closely with internal AI experts and partner teams to shape our collective future in agent-based automation.
  

• Own projects end-to-end, from solution design to implementation, testing, and post-launch support.
  

• Contribute to a culture of learning, experimentation, and continuous improvement.
  

The Stack You’ll Work With

We don’t expect you to know ev