Principal Quantitative Engineer, Investments Technology

Liberty Mutual; Boston (MA); Hybrid; USD 120,000 - 160,000; Full time

Job summary

Liberty Mutual is seeking a highly skilled Principal Quantitative Engineer to join their Investments Technology team in Boston. This role combines hands-on engineering with technical direction, aimed at advancing portfolio construction and analytics.

The ideal candidate will have at least 5 years of experience in Python programming, strong quantitative skills, and the capability to convert AI prototypes into effective applications. The position offers a hybrid work arrangement, requiring 3 days a week in the office.

Qualifications

• Minimum of 5 years of professional experience programming in Python.
• Experience in front-end development and UX design.
• Strong quantitative background with hands-on experience in finance.

Responsibilities

• Lead the design and implementation of applications and tools for portfolio analysis.
• Partner with quantitative analysts to convert prototypes into production-ready applications.
• Build and maintain data pipelines for financial data.

Skills

Python programming

Full-stack development

SQL

Problem-solving

Analytical skills

Communication

Attention to detail

Version Control (Git)

Statistical techniques

Data visualization

Education

Bachelor’s or Master’s degree in a technical or business discipline

Ph.D. in a quantitative field

Tools

Python Libraries (pandas, NumPy)

Data visualization libraries (Plotly, Dash)

Financial data platforms (Bloomberg, FactSet)

Job description

Principal Quantitative Engineer, Investments Technology

Description

We are seeking a highly skilled and motivated Principal Quantitative Engineer to join our prestigious investment firm. The Quant Solutions team, part of Global Strategy & Capital Allocation, leads the General Account’s asset allocation and portfolio construction process, delivering advanced analytics, scenario analysis, and forward‑looking insights to guide long‑term, annual, and tactical investment decisions within regulatory, rating agency, and portfolio constraints. As the technical lead embedded within this team, you will drive the design and implementation of small‑scale applications and proofs of concept that advance portfolio construction, asset allocation analytics, and quantitative research workflows.

You will partner closely with quantitative analysts and portfolio strategists to enhance their day‑to‑day use of AI, helping them build artifacts in a more technically sound manner and building robust systems and tools that scale those prototypes into production‑ready applications. We’re looking for a hands‑on software architect and builder who can design systems, rapidly iterate on them, and deliver quality solutions that power analytics, reporting, and investment decision‑making.

This role is ideal for a Lead or Senior Engineer who thrives as an individual contributor and wants to drive technical direction without moving into management.

Note: This Boston‑based role has a hybrid work arrangement (3 days per week in office).

Responsibilities

• Lead the design and implementation of applications, proofs of concept, and production‑grade tooling that advance portfolio construction, asset allocation analytics, and quantitative research workflows.
• Partner with quantitative analysts and portfolio strategists to convert AI‑generated prototypes and research artifacts into robust, production‑ready applications.
• Build and maintain data pipelines for portfolio and market data across public and private markets, leveraging the LMI data ecosystem.
• Contribute to the team’s shared quantitative library, supporting both existing and new models, analytics, and reusable components.
• Support and extend existing applications and dashboards in production, and drive the design and implementation of new ones to meet evolving research and decision‑support needs.

Qualifications

• Excellent problem‑solving and analytical skills, with the ability to think critically, independently, and act with minimal handholding
• Effective communication skills, with the ability to clearly articulate complex ideas and analysis to both technical and non‑technical stakeholders.
• Strong attention to detail, organization, and the ability to manage multiple tasks and priorities in a fast‑paced environment.
• Full‑stack development knowledge with a minimum of 5 years professional experience programming in Python demonstrating the ability to write efficient and robust code able to process and analyze large financial datasets.
• Experience with key Python Libraries (pandas, NumPy) required
• Experience in front‑end development and user experience (UX) design required; experience with Pythonic front‑end and data visualization libraries (e.g., Plotly, Dash) preferred.
• Experience using Version Control (Git) required.
• Experience using Agentic Programming tools (Github Copilot, Claude) required.
• Experience developing applications for investment management firms or, more broadly, financial services is a strong plus.
• Strong SQL skills required. Familiarity with financial data platforms (such as Bloomberg, FactSet, Aladdin, eFront, Moodys), financial databases, and data manipulation techniques strongly preferred.
• Strong quantitative background required, with hands‑on experience applying statistical, time‑series, and optimization techniques using Python libraries (e.g., SciPy, Scikit‑Learn, cvxpy, statsmodels) to portfolio construction and asset allocation problems.
• Deep understanding of investment management and portfolio composition strategies, with knowledge across asset classes including fixed income, public and private equity, and private credit.
• Demonstrated experience applying quantitative methodologies (including optimization, factor modeling, risk decomposition, and econometrics) to support portfolio construction, asset allocation, and investment decisions.
• Demonstrated ability to partner with business teams to convert AI‑generated artifacts (e.g., prototypes, proofs of concept) into production‑ready applications.
• Experience bridging the gap between rapid AI‑developed prototypes to quality full‑stack applications is highly valued.
• Proven ability to design, build, and scale application systems in data‑rich environments including custom AI tools.
• Master’s or Ph.D. (or equivalent experience) in a quantitative or engineering field such as Computer Science, Mathematics, Statistics, Econometrics, Financial Engineering, or a related discipline.
• Eight or more years of software engineering experience

Education

• A Bachelor’s or Master’s degree in a technical or business discipline, or equivalent experience