Software Developer - IC5 (THREE)

THREE leverages dozens of critical integrations to inform our policy underwriting process, handle payments, manage claims, and much more. As a Senior Software Engineer with a focus on building integrations, you'll play a pivotal role in shaping how our platform connects with the world.

You’ll be a great fit for this role if you:

• Thrive on solving complex technical challenges with high autonomy.
• Enjoy architecting systems and setting the standard for well-tested, maintainable code.
• Love seeing your code make an immediate and direct impact.
   

THREE combines multiple business-critical coverages that small businesses need, like liability and workers compensation, all in a single, three-page policy. Like an open-source codebase, there’s no fine print or surprises – our transparent policy is available here: https://threeinsurance.com/the-policy.

Behind the simplicity of that policy is a growing set of tools, workflows, and services designed to deliver clarity and trust at scale. As an engineer at THREE, you’ll help shape those systems and the customer experience they enable.

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
• Identify and resolve performance bottlenecks, scaling challenges, and system reliability issues
• 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
• Contribute to improving the developer experience through tooling, automation, and process refinement

Qualifications

Knowledge and Experience:

• 6+ years of professional experience building and scaling modern web applications and distributed systems
• Proven track record of technical leadership on complex projects or systems
• Expertise in backend development using a modern framework such as Django, Rails, or similar
• Experience working across the stack, with the ability to contribute meaningfully to frontend development (React or equivalent)
• Strong systems design and architectural skills, with a focus on performance, reliability, and maintainability
• Deep understanding of APIs, data modeling, asynchronous workflows, and service-oriented architecture
• Experience with cloud platforms (Azure preferred, AWS/GCP acceptable), infrastructure-as-code, and CI/CD pipelines
• Excellent communication skills, with the ability to drive cross-functional collaboration and technical decision-making

Preferred Knowledge:

• Experience integrating with insurance platforms, financial systems, or similar enterprise-grade solutions.
• Familiarity with our tech stack – Azure, Django, React, Celery, 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 vaca