Principal Full Stack Software Engineer, Investments Technology (Public Markets)

Liberty Mutual; Boston (MA); Hybrid; USD 180,000 - 240,000; Full time

Job summary

Liberty Mutual Investments is seeking a Principal Full Stack Software Engineer to lead real-time trading and market data platform work for Global Liquid Markets. You will design, build, and evolve high-throughput systems leveraging Python and cloud-native AWS technologies within an agile environment.

The role emphasizes technical leadership, architecture governance, and collaboration with stakeholders to deliver resilient, secure, and scalable solutions.

Qualifications

• 8+ years of software engineering in an agile environment.
• Experience building real-time trading, execution, order management, or market data systems for institutional investors.
• Deep understanding of distributed systems, low-latency architectures, and fault-tolerant design.

Responsibilities

• Provide hands-on technical leadership designing and building real-time, high-throughput trading and market data platforms for Global Liquid Markets.
• Partner with Product Owners and stakeholders to co-create scalable designs balancing speed, resilience, security, and enterprise quality.
• Serve as the technical authority on the squad, guiding architecture decisions and ensuring alignment with strategy.
• Design clean, evolvable architectures for low-latency, event-driven, API-first systems.

Skills

Python

Backend development

AWS

Lambda

Fargate

Step Functions

REST APIs

Event-driven

Education

Bachelor's or Master's in CS/Engineering

CFA or progress towards CFA

Tools

Snowflake

Cloud-native architectures on AWS

CI/CD tooling

Job description

Liberty Mutual Investments manages Liberty Mutual Insurance Group's global financial assets across public and private domains, to create capital and generate income. With over $100 billion in AUM and staffed with 300+ investment, finance and operations professionals located in Boston, MA., Liberty Mutual Investments offers the best of both worlds; the look and feel of a boutique investment firm, and the reputation and financial strength of a Fortune 100 company.

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

The Principal Full Stack Software Engineer for the Public Markets Agile Squad will:

• Provide hands‑on technical leadership designing and building real-time, high‑throughput trading and market data platforms for Global Liquid Markets.
• Partner closely with Product Owners, business stakeholders, and Solution Engineers to co‑create solution designs that balance speed, resilience, security, and enterprise quality.
• Serve as the technical authority on the squad, guiding architecture decisions, setting engineering standards, and ensuring alignment with Public Markets and enterprise technology strategy.
• Design clean, evolvable architectures for low‑latency, event‑driven, and API‑first systems supporting institutional trading workflows.
• Embed modern software engineering practices including CI/CD, automated testing, observability, and responsible use of AI across the SDLC to improve developer productivity and system quality.
• Lead design reviews, produce clear architectural artifacts, and articulate technical trade‑offs to both technical and non‑technical audiences.
• Collaborate across squads and enterprise architecture to deliver integrated solutions while avoiding local optimization.
• Mentor and develop engineers through code reviews, pairing, and coaching, setting a high bar for engineering excellence.

Qualifications

Experience

• 8+ years of software engineering experience in an agile environment
• Prior experience building real‑time trading, execution, order management, or market data systems for institutional investors strongly preferred.
• Deep understanding of distributed systems, low‑latency architectures, and resilient, fault‑tolerant design.
• Proven experience working in fast‑paced, regulated financial services environments.

Skills

• Strong proficiency in Python and modern backend development; experience with cloud‑native architectures on AWS (e.g., Lambda, Fargate, Step Functions).
• Experience designing and consuming REST and event‑driven APIs; familiarity with data platforms such as Snowflake and ingestion pipelines.
• Practical experience applying AI‑assisted tools in the SDLC (e.g., code generation, test creation, observability, or productivity tooling).
• Excellent communication, facilitation, and influence skills.

Knowledge

• Deep knowledge of software architecture patterns, security and privacy controls, and enterprise engineering practices.
• Strong grasp of agile delivery, backlog management, and incremental value delivery.

Education

A Bachelor's or Master's degree in Computer Science, Engineering, or equivalent practical experience.

Highly Desirable: CFA or Progress towards CFA

About Us

Pay Philosophy: The typical starting salary range for this role is determined by a number of factors including skills, experience, education, certifications and location. The full salary range for this role reflects the competitive labor market value for all employees in these positions across the national market and provides an opportunity to progress as employees grow and develop within the role. Some roles at Liberty Mutual have a corresponding compensation plan which may include commission and/or bonus earnings at rates that vary based on multiple factors set forth in the compensation plan for the role.

At Liberty Mutual, our goal is to create a workplace where everyone feels valued, supported, and can thrive. We build an environment that welcomes a wide range of perspectives and experiences, with inclusion embedded in every aspect of our culture and reflected in everyday interactions. This comes to life through comprehensive benefits, workplace flexibility, professional development opportunities, and a host of opportunities provided through our Employee Resource Groups. Each employee plays a role in creating our inclusive culture, which supports every individual to do their best work. Together, we cultivate a community where everyone can make a meaningful impact for our business, our customers, and the communities we serve.

We value your hard work, integrity and commitment to make things better, and we put people first by offering you benefits that support your life and well‑being. To learn more about our benefit offerings please visit: https://www.libertymutualgroup.com/about-lm/careers/benefits

Liberty Mutual is an equal opportunity employer. We will not tolerate discrimination on the basis of race,