Senior Fullstack Engineer, Solve

Job Description

About the Role

Join us at Zendesk where were on a mission to power exceptional service for every person on the planet. Were accelerating that ambition by building products rooted in AI automation and intelligent customer experiences because behind every interaction lies an opportunity to make a human connection.

Were seeking a Senior Fullstack Engineer to help build Solve an AI-powered conversation engine that resolves customer issues across channels. Youll deliver end-to-end features spanning LLM integrations RAG retrieval workflow orchestration and polished front-end experiences that customers rely on to automate support.

What youll be doing

Extend the multi-turn conversation engine: manage intent routing context preservation
streaming responses and human handoff across channel integrations.
Build and optimize the RAG pipeline: embeddings semantic retrieval hybrid ranking and evidence-based answer construction to reduce hallucinations.
Architect and implement the visual workflow/prompt builder experience (React) for designing branching conversational flows and tool integrations.
Integrate with LLM providers through a unified abstraction layer and build specialized prompt strategies for tasks like clarification and validation.
Create data visualization and analytics surfaces to help customers monitor intent performance and AI impact.
Maintain high quality via testing observability and performance improvements across frontend and backend.

Basic qualifications

3 years professional fullstack engineering experience with production ownership.
Proficiency with Python backend frameworks (FastAPI recommended) and
React/TypeScript frontends.
Experience with search caching and message/event streaming technologies.

Preferred qualifications

Previous experience with LLM providers (OpenAI Google GenAI etc.) and prompt engineering.
Experience designing visual flow editors (React Flow or similar) and rich text editors.
Familiarity with embedding stores and retrieval pipelines at scale.
Prior work on multi-tenant SaaS and real-time streaming systems.

The intelligent heart of customer experience

Zendesk software was built to bring a sense of calm to the chaotic world of customer service. Today we power billions of conversations with brands you know and love.

Zendesk believes in offering our people a fulfilling and inclusive experience. Our hybrid way of working enables us to purposefully come together in person at one of our many Zendesk offices around the world to connect collaborate and learn whilst also giving our people the flexibility to work remotely for part of the week.

As part of our commitment to fairness and transparency we inform all applicants that artificial intelligence (AI) or automated decision systems may be used to screen or evaluate applications for this position in accordance with Company guidelines and applicable law.

Zendesk is an equal opportunity employer and were proud of our ongoing efforts to foster global diversity equity & inclusion in the workplace. Individuals seeking employment and employees at Zendesk are considered without regard to race color religion national origin age sex gender gender identity gender expression sexual orientation marital status medical condition ancestry disability military or veteran status or any other characteristic protected by applicable law. We are an AA/EEO/Veterans/Disabled employer. If you are based in the United States and would like more information about your EEO rights under the law please click here.

Zendesk endeavors to make reasonable accommodations for applicants with disabilities and disabled veterans pursuant to applicable federal and state law. If you are an individual with a disability and require a reasonable accommodation to submit this application complete any pre-employment testing or otherwise participate in the employee selection process please send an e-mail to with your specific accommodation request.