Senior Software Engineer

Simpson Thacher & Bartlett LLP

. Design, develop, and maintain custom software solutions supporting Knowledge & Innovation initiatives, including AI-powered tools, internal platforms, and integrations with existing Firm systems .

Posted 9/30/2026full-timeRemote • New York • United StatesSenior💰 $180,000 - $210,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in full-stack software development, particularly with JavaScript/TypeScript, React, Node.js, and Python, while effectively collaborating with non-technical stakeholders to deliver AI-powered solutions and maintain high standards of security and reliability in production systems.

Highest-signal resume keywords

Full-Stack DevelopmentAI/LLM IntegrationCloud Infrastructure (AWS/Azure)CI/CD Pipelines (GitHub Actions)Observability and Monitoring Practices

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

JavaScriptTypeScriptReactNode.jsPythonTerraformBicepGitHub ActionsAI/LLM IntegrationAgentic Coding Tools

Soft Skills

Communication with Non-Technical StakeholdersFeedback GatheringTechnical Decision Explanation

Tools & Technologies

CI/CD PipelinesInfrastructure-as-CodeCloud ResourcesSaaS PlatformsMonitoring Tools

Certifications & Qualifications

Bachelor's Degree in Computer Science

Industry Keywords

Legal TechnologyProfessional ServicesRegulated EnvironmentsObservability PracticesFrontend Architecture Patterns

Tech Stack

Tools & technologies

AWSAzureCloudJavaScriptNode.jsPythonReactTerraformTypeScript

About the role

Key responsibilities & impact

Design, develop, and maintain custom software solutions supporting Knowledge & Innovation initiatives, including AI-powered tools, internal platforms, and integrations with existing Firm systems
Contribute to architectural decisions with the Director of Engineering, balancing speed, reliability, and maintainability
Build and extend integrations across SaaS platforms, internal systems, data sources, and AI/LLM services used in legal workflows
Develop polished frontend experiences, including component libraries and design system foundations
Own and evolve CI/CD pipelines, deployment automation, infrastructure-as-code, and development environment tooling
Establish monitoring, logging, alerting, and other observability practices for production systems
Partner with IT on security protocols, cloud resources, and deployment targets
Ensure systems are reliable, secure, and aligned with Firmwide technology standards
Contribute to AI-powered retrieval-augmented systems, document analysis platforms, search tools, and workflow automation
Translate complex legal and business requirements into practical software with attorneys, knowledge management professionals, data scientists, and practice solutions teams
Demo tools, gather feedback, and help legal staff adopt solutions
Evaluate and prototype tools, frameworks, and approaches; share successful experiments with the team
Help establish the engineering culture and ways of working for a new function

Requirements

What you’ll need

Bachelor's degree in Computer Science or related working experience
7+ years of experience in software engineering, with demonstrated progression in scope and responsibility
Strong full-stack skills across JavaScript/TypeScript, React, Node.js, and Python
Experience with cloud infrastructure (AWS and/or Azure), infrastructure-as-code (Terraform/Bicep), and CI/CD pipelines (GitHub Actions or equivalent)
Practical experience with AI/LLM integration in production systems, or strong aptitude and interest in developing it
Experience with agentic coding tools (e.g., Claude Code, Cursor, Codex)
Comfort working directly with non-technical stakeholders — able to demo work, gather feedback, and explain technical decisions clearly
Experience in legal technology, professional services, or other highly regulated environments (preferred)
Experience establishing observability and monitoring practices for production systems (preferred)
Familiarity with design systems, component libraries, or frontend architecture patterns at the systems level (preferred)
Experience integrating and extending enterprise SaaS platforms (preferred)
Must be authorized to work without employer-sponsored visa; Simpson Thacher will not sponsor applicants for work visas