Senior Backend Engineer - AI-Driven, Scalable Systems

NxT Level; New York (NY); On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

Visa sponsorship

Equity

Medical, dental, and vision benefits

401k with 3% company match

Equipment stipend

Annual team off-site

In-person in San Francisco or New York

Job summary

NxT Level is seeking a senior or staff-level backend engineer to own and evolve the core systems powering Lighthouse. The role emphasizes Python/TypeScript, PostgreSQL, GraphQL, and serverless compute with LLMs woven throughout.

You will tackle designing agentic systems, improving security, and scaling the API layer to handle growing demand. Expect work on data pipelines and external integrations, with a focus on reliability and performance.

Qualifications

• 5+ years building and operating production backend systems: APIs, databases, async job processing, event-driven architectures.
• Strong in Python/Typescript and building scalable, complex backend systems; PostgreSQL, async Python, and event-driven architectures a plus.
• Experience with agentic systems and LLM-powered features for automating complex legal workflows.

Responsibilities

• Own and evolve core backend systems powering Lighthouse.
• Design and build agentic systems for autonomous, multi-step workflows that draft legal documents and review cases.
• Improve backend security, auth, environment isolation, and database access patterns.
• Scale the API layer and improve structure, performance, and maintainability of the GraphQL API.
• Build robust data pipelines and integrations across Slack, Linear, HubSpot, Front, and other services.
• Strengthen document ingestion and generation pipelines for filing-ready outputs.

Skills

Backend systems

Python/TypeScript

PostgreSQL

Event-driven architecture

Tools

GraphQL

PostgreSQL

Serverless

LLM integration

Job description

NxT Level is seeking a senior or staff-level backend engineer to own and evolve the core systems powering Lighthouse. The role emphasizes Python/TypeScript, PostgreSQL, GraphQL, and serverless compute with LLMs woven throughout.

You will tackle designing agentic systems, improving security, and scaling the API layer to handle growing demand. Expect work on data pipelines and external integrations, with a focus on reliability and performance.