Zendesk

Senior Fullstack Engineer, Solve

Zendesk$145K — $217K *
Consumer Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • 3+ years of fullstack engineering experience with production ownership.
  • Proficient in Python backend frameworks, particularly FastAPI.
  • Strong knowledge of React and TypeScript for front-end development.
  • Experience with search, caching, and message/event streaming technologies.
  • Familiarity with LLM providers and prompt engineering is preferred.

Responsibilities

  • Extend the multi-turn conversation engine by managing intent routing and context preservation.
  • Build and optimize the RAG pipeline for semantic retrieval and evidence-based answer construction.
  • Architect the visual workflow experience using React for designing conversational flows.
  • Integrate with LLM providers through a unified abstraction layer for specialized tasks.
  • Create data visualization interfaces to monitor intent performance and AI impact.
  • Ensure quality through rigorous testing and performance improvements for both frontend and backend.

Benefits

  • Flexible work environment with remote options.
  • Opportunities for career advancement and skill development.
  • Access to the latest tools and technologies in AI and software development.
Full Job Description
Job Description

About the Role

We’re seeking 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.

What you’ll 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 US annualized base salary range for this position is $145,000.00-$217,000.00. This position may also be eligible for bonus, benefits, or related incentives. While this range reflects the minimum and maximum value for new hire salaries for the position across all US locations, the offer for the successful candidate for this position will be based on job related capabilities, applicable experience, and other factors such as work location. Please note that the compensation details listed in US role postings reflect the base salary only (or OTE for commissions based roles), and do not include bonus, benefits, or related incentives.

About Zendesk

Zendesk is a customer service software company headquartered in San Francisco, California, USA. It is listed on the New York Stock Exchange with the symbol ZEN and is a constituent of the Russell 2000 Index. The company provides a cloud-based customer support platform which allows quicker and easier interaction between businesses and customers. Zendesk has over 4,000 employees and serves 150,000 customers in 160 countries. The company was founded in 2007 by Mikkel Svane, Morten Primdahl, and Alexander Aghassipour.
Learn more about Zendesk
Size
2,570 employees
Market Cap
$10.3 billion
Industry
Net Income
-$218.1 million
Founded
2007
5 Year Trend
+33.7%
Revenue
$1 billion
NASDAQ

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