Sr. Engineer, Fullstack (Zapier MCP)

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.

Job Posted: 6/28/25

Location: Americas

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.

• 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.
  

• 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.
  

We don’t expect you to know everything, but experience with some of the following is helpful:

• Backend: Python, FastAPI, Node.js
  

• Frontend: React, TypeScript, Next.js
  

• Datastores: Postgres, Redis
  

• Dev Tools: GitHub Actions, Docker, Kubernetes, Terraform
  

• AI/LLM: OpenAI API, Anthropic API, LangChain, semantic search, vector databases
  

• Developer Experience: SDK authoring, API documentation, onboarding flows
  

Zapier is a 100% remote team, and has been since day one. We value asynchronous communication, transparent collaboration, and work-life harmony. We believe in building systems that scale—both in code and in culture.

If you’re passionate about shaping the future of AI-driven automation, and want to work at a company that cares deeply about its people and its product, we’d love to hear from you.

At Zapier, we believe that diverse perspectives and experiences make us better, which is why we have a non-standard application process designed to promote inclusion and equity. We're looking for the best fit for each of our roles, regardless of the type of companies in your background, so we encourage you to apply even if your skills and experiences don’t exactly match the job description. All we ask is that you answer a few in-depth questions in our application that would typically be asked at the start of an interview process. This helps speed things up by letting us get to know you and your skillset a bit better right out of the gate. Please be sure to answer each question; the resume and CV fields are optional.

Education is not a requirement for our roles; however, if you receive an offer, you will need to include your most recent educational experience as part of our background check process.

After you apply, you are going to hear back from us—even if we don’t see an immediate fit with our team. In fact, throughout the process, we strive to never go more than seven days without letting you know the status of your application. We know we’ll make mistakes from time to time, so if you ever have questions about where you stand or about the process, just ask your recruiter!

Zapier is an equal-opportunity employer and we're excited to work with talented and empathetic people of all identities. Zapier does not discriminate based on someone's identity in any aspect of hiring or employment as required by law and in line with our commitment to Diversity, Inclusion, Belonging and Equity. Our code of conduct provides a beacon for the kind of company we strive to be, and we celebrate our differences because those differences are what allow us to make a product that serves a global user base. Zapier will consider all qualified applicants, including those with criminal histories, consistent with applicable laws.

Zapier prioritizes the security of our customers' information and is dedicated to adhering to all applicable data privacy laws. You can review our privacy policy here.

Zapier is committed to inclusion. As part of this commitment, Zapier welcomes applications from individuals with disabilities and will work to provide reasonable accommodations. If reasonable accommodations are needed to participate in the job application or interview process, please contact [email protected].

The anticipated application window is 30 days from the date job is posted, unless the number of applicants requires it to close sooner or later, or if the position is filled.

Even though we’re an all-remote company, we still need to be thoughtful about where we have Zapiens working. Check out this resource for a list of countries where we currently cannot have Zapiens permanently working.

Compensation Range: $170.8K - $224.1K