THREE is building a new kind of small business insurance. We combine the coverages small businesses need into a single, transparent policy — replacing the patchwork of confusing products the industry has sold for decades. We're a small, technical team backed by Berkshire Hathaway. We move fast, pick the best tools available, invest heavily in automation, and optimize relentlessly for shipping meaningful features.

As a Principal Software Engineer, you'll be one of the most senior technical voices on our team. You'll architect and build across our underwriting engine, policy management systems, and customer-facing tools, making foundational decisions about how our platform scales and evolves. This isn't a role where you'll write design docs that collect dust. You'll be hands-on, shipping production code regularly while raising the bar for how the team builds software.

You'll be a great fit if you:

• Want real ownership over architecture and technical direction.
• Move fast and believe that shipping and iterating beats planning in a vacuum.
• Reach for the best tools available, including AI-assisted development, modern frameworks, and managed infrastructure. 
• Care deeply about well-tested, maintainable systems and hold the team to that standard.
• Thrive with high autonomy and do your best work when you're trusted to figure out the right approach.
• Want to see your code make a direct, measurable impact on the business.
• Stay on top of changes in the evolving software and AI ecosystems.

Job Responsibilities

• Drive architectural decisions and contribute to long-term technical strategy in partnership with engineering leadership
• Own complex feature development end-to-end, from initial planning through delivery and observability
• Set engineering standards and promote best practices in code quality, testing, documentation, and system design
• Collaborate with product, design, and other technical stakeholders to shape roadmaps and scope technical initiatives
• Mentor engineers across the team and provide technical leadership through code reviews, design discussions, and knowledge sharing
• Identify and resolve performance bottlenecks, scaling challenges, and system reliability issues
• Advocate for and contribute to improved developer experience through tooling, automation, and process refinement

• 8+ years of professional experience building and scaling modern web applications and distributed systems
• 1+ years of experience contributing in a principal technical role, with a proven track record of technical leadership and ownership on complex projects and systems
• Experience leveraging AI tools to improve engineering productivity and quality
• Expertise in backend development using a modern framework such as Django, NextJS, or similar
• Strong full-stack fluency with the ability to contribute meaningfully in React or similar frontend frameworks
• Strong systems design and architectural skills, with a focus on performance, reliability, and maintainability
• Deep understanding of APIs, data modeling, asynchronous workflows, monoliths versus pinpoint solutions, and service-oriented architecture
• Experience with cloud platforms (Azure preferred, AWS/GCP acceptable), infrastructure-as-code, and CI/CD pipelines
• Clear, confident communication skills and the ability to influence cross-functional partners

Preferred Knowledge & Experience:

• Experience integrating with insurance platforms, financial systems, or similar enterprise-grade solutions
• Well-versed in Python and Typescript (open to Ruby, Golang, etc.)
• Familiarity with our tech stack – Azure, Django, React, Temporal, Terraform
• Experience with workflows that coordinate many third-party integrations
• Hands-on experience with CI/CD pipelines and automation tools to streamline integration testing

About Us

Our parent, Berkshire Hathaway Inc. (berkshirehathaway.com) is a holding company with diversified interests in a host of industries, including insurance, energy, transportation and manufacturing. Most policies issued through THREE will be underwritten by Berkshire Hathaway Direct Insurance Company (""BHDIC""), which is an AM Best rated A++ insurer.

BHDIC is domiciled in Omaha, Nebraska. BHDIC and the team at THREE are focused on helping small business owners quickly and easily buy affordable insurance directly from a financially strong insurance company they can trust.

BHDIC is excited to announce our comprehensive benefits package with some new and enhanced features for 2026 that include:

• Medical (PPO/HDHP), vision, disability, and life insurance.
• Enhanced dental plan with orthodontia coverage in addition to a standard plan.
• Generous PTO plan for all benefit-time eligible employees.
• Paid company holidays and 4 floating holidays.
• Paid parental leave.
• Employee Retirement Savings Plan/401(k) with company match and immediate vesting.
• Education Assistance Program that offers 100% upfront tuition reimbursement after 6 months of service for approved degree programs.
• Service Recognition Program that provides a monetary award to be used toward a vacation every 5 years of employment.
• Wellness Initiatives that include Fitness Center and Weight Watchers Reimbursement programs.
• Voluntary benefits that include accident, critical illness, and hospital indemnity.
• Employee discount and rewards program on travel, tickets, electronics, home, and more.

In accordance with pay transparency laws and regulations, the following good faith compensation range estimate is being provided. The salary range for this position is $200,000- $250,000 per year. Final compensation will be based on candidate qualifications, geographic location, and other considerations permitted by law.