Senior AI Surface Engineer - Remote/Hybrid

Relativity; United States; Hybrid; USD 126,000 - 190,000; Full time

Benefits offered by this job

DTO

Parental leave

Equity program

Job summary

Relativity is seeking a Senior Software Engineer to design, build, and own production agents end to end across the full stack, including tools, prompts, and context work. You will collaborate with founders and a small team, shipping LLM-powered features to real users and contributing to core infrastructure to ensure reliable, scalable outcomes.

The role requires strong experience in full-stack web apps, cloud services (AWS/Azure), and a modern software lifecycle.

Qualifications

• 5+ years of experience building production software in service-oriented, continuously deployed teams.
• Experience shipping LLM-powered features to real users through a launched project.

Responsibilities

• Design, build, and ship agents and agent capabilities end to end, including tools, prompts, context assembly, structured outputs, guardrails, services, and the frontend experience in Word or on the web.
• Build and maintain evaluations for the capabilities you own. Use them to guide decisions and instrument production to measure acceptance, latency, and cost per agent.
• Contribute to shared infrastructure, including the harness, context and retrieval pipeline, model routing, and observability stack.
• Practice a modern software development lifecycle through small, frequent commits, feature-flagged production deployments, fast rollbacks, and daily use of agentic engineering tools.
• Debug non-deterministic failures, retrieval misses, tool-call errors, and model regressions.
• Participate in design reviews, write clear technical documentation, review code for other engineers, and mentor Advanced engineers.
• Work directly with product, design, and, at times, customers to understand what good work product means for a given legal task.

Skills

LLM-powered features

Production software

Full-stack web applications

API usage across providers

React frontend or Node/Python services

Testing to catch regressions

English communication

Open-source / side projects

Tools

AWS

Azure

Containers

CI/CD

PostgreSQL

Job description

Relativity is seeking a Senior Software Engineer to design, build, and own production agents end to end across the full stack, including tools, prompts, and context work. You will collaborate with founders and a small team, shipping LLM-powered features to real users and contributing to core infrastructure to ensure reliable, scalable outcomes.

The role requires strong experience in full-stack web apps, cloud services (AWS/Azure), and a modern software lifecycle.