Lead Software Engineer, AI Surfaces & Agentic Systems

Relativity; Illinois; Hybrid; USD 150,000 - 224,000; Full time

Benefits offered by this job

Equity program

Parental leave

DTO

Job summary

Relativity is seeking a Lead Software Engineer for Gavel to own a major area of the product, such as a family of agents or a core capability including the context pipeline, evaluation platform, or Word integration. You’ll own the technical plan from frontend to data layer and guide a small team of engineers.

This hands-on leadership role will involve roughly half coding. You will work with the CTO and Staff Engineer, influence architecture, and may be based remotely in the United States or in

Qualifications

• 8+ years of production software experience in service-oriented, continuously deployed teams, including at least 1 year shipping LLM-based products or features to real users.
• Direct experience building full-stack web applications and agentic applications, owning at least one agentic capability in production.
• Practical experience with evaluation, including building evaluation sets, selecting metrics, using LLM-as-judge appropriately, and connecting offline results to online outcomes.
• Solid grasp of retrieval and context engineering, including embeddings, hybrid search, chunking and ranking strategies, and context budgeting.
• Hands-on cloud infrastructure experience with AWS or Azure, containers, CI/CD, infrastructure as code, and production observability.
• Fluency in TypeScript or Python and ability to work across stack: React, Node or Python services, PostgreSQL.
• Experience leading technical work of a small team through planning, reviewing, unblocking, and delivering code.
• Clear written and verbal communication, including explaining model-quality regressions to lawyers and scoping trade-offs to founders.
• Drive for simplicity and ability to distinguish useful abstractions from unnecessary ones.

Responsibilities

• Own the technical roadmap and delivery for your area, from design through production monitoring.
• Design and build agents and the infrastructure they run on, including tool definitions, prompts, and context assembly.
• Run the evaluation and release loop for agents; monitor results and iterate.
• Model a modern software development lifecycle with small, frequent commits and feature-flagged deployments.
• Collaborate with product and design on what to build next, and engage with customers when data isn’t clear.
• Lead design reviews, set coding/testing standards, mentor engineers, and participate in hiring.
• Work with Relativity platform and security teams on shared infrastructure and identity.

Skills

LLM products

Full-stack web

Evaluation experience

Retrieval & context

Cloud infrastructure

TypeScript

Python

Team leadership

Communication

Simplicity

Tools

React

Node.js

PostgreSQL

Job description

Relativity is seeking a Lead Software Engineer for Gavel to own a major area of the product, such as a family of agents or a core capability including the context pipeline, evaluation platform, or Word integration. You’ll own the technical plan from frontend to data layer and guide a small team of engineers.

This hands-on leadership role will involve roughly half coding. You will work with the CTO and Staff Engineer, influence architecture, and may be based remotely in the United States or in