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

Liberty Mutual Insurance • Boston, MA

3d • Hybrid

About The Position

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 hybrid work arrangement (2 -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.

Requirements

• 8+ years of software engineering experience in an agile environment
• Deep understanding of distributed systems, low‑latency architectures, and resilient, fault‑tolerant design.
• Proven experience working in fast‑paced, regulated financial services environments.
• 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.
• 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.
• A Bachelor’s or Master’s degree in Computer Science, Engineering, or equivalent practical experience.

Nice To Haves

• Prior experience building real‑time trading, execution, order management, or market data systems for institutional investors strongly preferred.
• CFA or Progress towards CFA

Responsibilities

• 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.

What This Job Offers

• Job Type: Full-time
• Career Level: Principal