Senior Software Engineer

Simpson Thacher & Bartlett LLP

Senior Software Engineer responsible for designing and building software for legal technology and AI at the Firm. Collaborating with various teams to deliver impactful solutions.

Posted 6/23/2026full-timeNew York City • New York • 🇺🇸 United StatesSenior💰 $180,000 - $210,000 per yearWebsite

Tech Stack

Tools & technologies

AWSAzureCloudJavaScriptNode.jsPythonReactTypeScript

About the role

Key responsibilities & impact

Design, develop, and maintain custom software solutions supporting Knowledge & Innovation initiatives
Build custom applications for attorneys and Professional Staff
Own and evolve the team's engineering infrastructure: CI/CD pipelines, deployment automation, infrastructure-as-code, and development environment tooling
Contribute to the development of AI-powered tools — including retrieval-augmented systems, document analysis platforms, search tools, and workflow automation

Requirements

What you’ll need

7+ years of experience in software engineering
Strong full-stack skills across JavaScript/TypeScript, React, Node.js, and Python
Experience with cloud infrastructure (AWS and/or Azure)
Practical experience with AI/LLM integration in production systems
Experience with agentic coding tools (e.g., Claude Code, Cursor, Codex)
Bachelor's degree in Computer Science or related working experience.

Benefits

Comp & perks

Health insurance
401(k) matching
Flexible work hours
Paid time off
Remote work options

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

JavaScriptTypeScriptReactNode.jsPythonCI/CD pipelinesdeployment automationinfrastructure-as-codeAI/LLM integrationagentic coding tools

Certifications

Bachelor's degree in Computer Science