# Senior Fullstack Engineer

**Company**: Zendesk
**Work arrangement**: hybrid
**Experience**: senior
**Job type**: full-time
**Salary**: $145,000.00-$217,000.00
**Category**: Engineering
**Industry**: Technology

**Apply**: https://zendesk.wd1.myworkdayjobs.com/en-US/zendesk/job/Austin-Texas-United-States-of-America/Senior-Fullstack-Engineer--Solve_R34789?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_07758094-e03

## Description

Join Zendesk as a Senior Fullstack Engineer to help build Solve, an AI-powered conversation engine that resolves customer issues across channels.

You'll deliver end-to-end features spanning LLM integrations, RAG retrieval, workflow orchestration, and polished front-end experiences that customers rely on to automate support.

Responsibilities:

- 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 US annualized base salary range for this position is $145,000.00-$217,000.00.

## Skills

### Required
- Python
- React
- TypeScript
- FastAPI
- search
- caching
- message/event streaming

### Nice to have
- LLM providers
- prompt engineering
- React Flow
- rich text editors
- embedding stores
- retrieval pipelines
- multi-tenant SaaS
- real-time streaming systems

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Source: [Apply at zendesk.wd1.myworkdayjobs.com](https://zendesk.wd1.myworkdayjobs.com/en-US/zendesk/job/Austin-Texas-United-States-of-America/Senior-Fullstack-Engineer--Solve_R34789?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)