Senior Software Engineer

Rachel Paul Recruiting; Greenwich (CT); On-site; USD 150,000 - 200,000; Full time

Job summary

AQR in Greenwich, CT is seeking an experienced software engineer to own impactful implementations and drive large, ambiguous initiatives from concept through delivery.

You will build scalable, AWS-based storage and computing infrastructure, a generalized research platform, and pipelines for model computation and ML/NLP.

Ideal candidates hold a CS/Engineering degree, 7+ years in production software, AWS/cloud-native experience, and strong Python with Linux and SQL skills.

Qualifications

• Bachelor's or Master's degree in CS, Engineering, Mathematics, or related field.
• 7+ years of professional software engineering experience delivering production systems.
• Experience building cloud-native apps on AWS.
• Experience designing and optimizing large-scale data processing pipelines.
• Strong Python, plus optional C++ experience.

Responsibilities

• Build or extend scalable, AWS-based storage and computing infrastructure.
• Develop a generalized research platform.
• Implement model computation and signal generation pipelines.
• Create ML/NLP pipelines.

Skills

Python

C++

Linux

AWS

Big data

SQL

ML/AI

System design

Observability

Production engineering

Communication

Mentoring

Agile

Education

Bachelor's or Master's in CS/Engineering

Tools

Git

Job description

• A strong technical individual contributor who takes ownership of implementations and outcomes
• Comfortable driving large, ambiguous initiatives from concept through delivery
• Effective at mentoring and developing engineers, setting clear expectations and providing constructive feedback
• Collaborative, thoughtful, and effective working across disciplines and geographies
• Committed to intellectual integrity, transparency, and openness

Your Role:

As a software engineer at AQR, you will build or extend our:

• Scalable, AWS-based storage and computing infrastructure
• Generalized research platform
• Model computation and signal generation pipeline
• Machine learning / Natural Language Processing pipeline

What You’ll Bring:

• Bachelor's or Master's degree in Computer Science, Engineering, Mathematics, or a related technical field.
• 7+ years of professional software engineering experience designing and delivering production software systems.
• Experience building and deploying cloud-native applications, preferably using AWS services and modern cloud infrastructure.
• Experience developing and optimizing large-scale data processing pipelines and working with big data technologies.
• Experience designing, building, and operating production-scale AI/ML applications, with a strong focus on system stability, reliability, and scalability.
• Strong understanding of software architecture, scalability, performance optimization, observability, and operational excellence for production systems.
• Experience supporting quantitative research, alpha generation platforms, signal generation, portfolio construction, or trade generation systems is a strong plus.
• Strong software engineering skills in Python; experience with C++ is a plus.
• Strong Linux development and troubleshooting experience in production environments.
• Proficiency with SQL and experience designing and optimizing data storage and retrieval for high-volume applications.
• Demonstrated ability to work effectively in fast-paced, agile environments with evolving requirements and competing priorities.
• Excellent communication and collaboration skills, with the ability to clearly explain technical concepts and architectural decisions across engineering teams.
• Familiarity with financial markets, investment workflows, or time-sensitive distributed applications is a plus.