Senior Backend Engineer, GenAI

Lemonade
Tel Aviv
Workplace: OnsiteFull timeFunction: Software EngineeringExperience: 6+ yearsSkills: ["Drive","Efficiency","Adaptability","Evaluation mindset","Root-cause troubleshooting","Experimentation"]

Build and own production LLM agent systems for fully autonomous insurance customer service. Work on a real-time voice agent handling complex conversational issues, expand and curate a grounded knowledge base, and run controlled experiments using an in-house eval platform to promote winning changes to production. Develop scalable TypeScript/Node backend services on Kubernetes/AWS with strong observability, while optimizing cost per conversation across millions of LLM calls and adding guardrails against confident errors.

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FursaFursa
Lemonade
Lemonade
1 month ago

Senior Backend Engineer, GenAI

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 13 hours agoStatus: Live

Job Summary

Build and own production LLM agent systems for fully autonomous insurance customer service. Work on a real-time voice agent handling complex conversational issues, expand and curate a grounded knowledge base, and run controlled experiments using an in-house eval platform to promote winning changes to production. Develop scalable TypeScript/Node backend services on Kubernetes/AWS with strong observability, while optimizing cost per conversation across millions of LLM calls and adding guardrails against confident errors.
Location: Tel Aviv
Workplace: Onsite
Employment Type: Full time
Job Function: Software Engineering
Seniority: Mid level

Key Responsibilities

  • •Design, build, and own production LLM agent systems end-to-end, including safe failure behavior.
  • •Work on a real-time voice agent tackling conversational challenges like interruptions and mid-sentence tool calls.
  • •Shape and maintain the knowledge base structure, curation, and delivery so answers stay grounded as coverage grows.
  • •Run controlled experiments by measuring changes against thousands of replayed real conversations, promoting winners into production.
  • •Build and operate scalable backend services in TypeScript/Node on Kubernetes/AWS with deep observability, optimizing cost per conversation and model guardrails.

Key Requirements

  • •6+ years building production-grade backend systems that real users depend on.
  • •Hands-on experience shipping LLM-powered features to production, including dealing with non-determinism, hallucination, and cost.
  • •An evaluation mindset: measure improvements statistically rather than relying on subjective judgment.
  • •Track record debugging distributed systems in production and finding root cause across service boundaries.
  • •Fluency with agentic coding tools like Claude Code or Cursor, treating AI-generated code with a senior reviewer’s skepticism.
Experience:6+ yearsLLMAIInsuranceDistributed systems
Skills:DriveEfficiencyAdaptabilityEvaluation mindsetRoot-cause troubleshootingExperimentation
Tech Stack:TypeScriptNodeKubernetesAWSLLMClaude CodeCursor

Company Brief

Lemonade
Lemonade is a technology-first insurance carrier that uses AI and behavioral economics to offer renters, homeowners, pet, car, and life insurance with instant underwriting and claims, and a social-impact 'Giveback' model donating leftover premiums to nonprofits.
Industry: InsurTech
Company Size: Enterprise (1,001+ employees)
Revenue: USD 500M to 1B
Growth: Public Company
Valuation: Public Company (Market Cap in USD)
Funding: IPO / Publicly Listed
Headquarters: New York, United States
Founded: 2015
Glassdoor
Glassdoor: 3.5
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