Senior Python Engineer - Quantitative Investment Platform

LOS ANGELES CAPITAL MANAGEMENT LLC; Los Angeles (CA); Hybrid; USD 130,000 - 155,000; Full time

Job summary

Los Angeles Capital Management LLC is seeking a Software Engineer III to design, build, and maintain Python-based applications and services powering our quantitative investment platform. You will develop APIs, domain logic, and automation with a strong emphasis on clean, well-tested code in a collaborative, hybrid LA-based environment.

The role requires 5+ years of production software experience, strong Python skills, and a passion for building with modern tools like FastAPI, Pydantic, and

Qualifications

• Bachelor’s degree in Computer Science, Computer Engineering, Electrical Engineering, Mathematics, Statistics, or equivalent professional experience
• At least 5 years of hands-on professional experience writing production software
• Solid proficiency in Python, including a working understanding of idiomatic, well-structured code
• Familiarity with writing automated tests and an understanding of why testing matters.
• Familiarity with version control in Git, including branching and the pull-request / code-review workflow
• Understanding of core software engineering fundamentals: data structures, clean code, modular design, and debugging
• Working proficiency in SQL
• Demonstrated ability to learn new technologies quickly and a genuine eagerness to do so
• Clear written and verbal communication, and the ability to work effectively on a collaborative team
• Experience or strong interest in building with LLMs: MCP server development, agentic workflows, and frameworks such as LangChain/LangGraph and LangSmith for tracing and evaluation

Responsibilities

• Design, build, and maintain Python applications and services that support the firm’s research and investment process
• Write clean, well-tested, maintainable code following team standards: type hints throughout, small focused functions, and clear naming
• Build and consume internal APIs (e.g., FastAPI) and well-modeled domain libraries (e.g., Pydantic), with attention to clear interfaces and separation of concerns
• Participate actively in code review, both giving and receiving feedback, as a core part of how the team ships software
• Contribute to the team’s automated test suites and help keep them fast, reliable, and meaningful
• Help maintain and improve CI/CD pipelines (GitHub Actions) so that changes ship safely and frequently
• Integrate the software you build with the firm’s data platform (Snowflake) and orchestration (Prefect) where the work calls for it
• Write and keep current the technical documentation and runbooks for the components you own
• Collaborate with quantitative researchers and fellow engineers to turn requirements into reliable, well-designed software
• Participate in agile team practices including sprint planning, backlog grooming, and estimation
• Continuously sharpen your engineering practice and take on increasing scope and ownership as you grow
• Build and extend AI-assisted tooling for the research and engineering workflow, including MCP servers and agent integrations (e.g., Claude, Anthropic API) that expose internal data and services to LLM-based assistant/agent.

Skills

Python

SQL

Git

Testing

API Design

LangChain

LLMs

Agile

Communication

Cloud/CI

Education

Bachelor’s degree in CS/CE/EE/Math/Stats or equivalent

Tools

FastAPI

Pydantic

Snowflake

Prefect

GitHub Actions

Docker

Azure

LangChain

LangSmith

Dagster

Job description

Los Angeles Capital Management LLC is seeking a Software Engineer III to design, build, and maintain Python-based applications and services powering our quantitative investment platform. You will develop APIs, domain logic, and automation with a strong emphasis on clean, well-tested code in a collaborative, hybrid LA-based environment.

The role requires 5+ years of production software experience, strong Python skills, and a passion for building with modern tools like FastAPI, Pydantic, and